Adding upstream version 115.7.0esr.upstream/115.7.0esr

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

28 files changed, 3450 insertions, 0 deletions

diff --git a/testing/mozbase/mozprocess/mozprocess/__init__.py b/testing/mozbase/mozprocess/mozprocess/__init__.py
new file mode 100644
index 0000000000..dfe2ea1580
--- /dev/null
+++ b/testing/mozbase/mozprocess/mozprocess/__init__.py
@@ -0,0 +1,6 @@
+# flake8: noqa
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this file,
+# You can obtain one at http://mozilla.org/MPL/2.0/.
+
+from .processhandler import *
diff --git a/testing/mozbase/mozprocess/mozprocess/processhandler.py b/testing/mozbase/mozprocess/mozprocess/processhandler.py
new file mode 100644
index 0000000000..e9a3b47d50
--- /dev/null
+++ b/testing/mozbase/mozprocess/mozprocess/processhandler.py
@@ -0,0 +1,1307 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this file,
+# You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# mozprocess is typically used as an alternative to the python subprocess module.
+# It has been used in many Mozilla test harnesses with some success -- but also
+# with on-going concerns, especially regarding reliability and exception handling.
+#
+# New code should try to use the standard subprocess module, and only use
+# mozprocess if absolutely necessary.
+
+import codecs
+import errno
+import io
+import os
+import signal
+import subprocess
+import sys
+import threading
+import time
+import traceback
+from datetime import datetime
+
+import six
+
+if six.PY2:
+    from Queue import Empty, Queue  # Python 2
+else:
+    from queue import Empty, Queue  # Python 3
+
+__all__ = [
+    "ProcessHandlerMixin",
+    "ProcessHandler",
+    "LogOutput",
+    "StoreOutput",
+    "StreamOutput",
+]
+
+# Set the MOZPROCESS_DEBUG environment variable to 1 to see some debugging output
+MOZPROCESS_DEBUG = os.getenv("MOZPROCESS_DEBUG")
+
+INTERVAL_PROCESS_ALIVE_CHECK = 0.02
+
+# We dont use mozinfo because it is expensive to import, see bug 933558.
+isWin = os.name == "nt"
+isPosix = os.name == "posix"  # includes MacOS X
+
+if isWin:
+    from ctypes import WinError, addressof, byref, c_longlong, c_ulong, sizeof
+
+    from . import winprocess
+    from .qijo import (
+        IO_COUNTERS,
+        JOBOBJECT_ASSOCIATE_COMPLETION_PORT,
+        JOBOBJECT_BASIC_LIMIT_INFORMATION,
+        JOBOBJECT_EXTENDED_LIMIT_INFORMATION,
+        JobObjectAssociateCompletionPortInformation,
+        JobObjectExtendedLimitInformation,
+    )
+
+
+class ProcessHandlerMixin(object):
+    """
+    A class for launching and manipulating local processes.
+
+    :param cmd: command to run. May be a string or a list. If specified as a list, the first
+      element will be interpreted as the command, and all additional elements will be interpreted
+      as arguments to that command.
+    :param args: list of arguments to pass to the command (defaults to None). Must not be set when
+      `cmd` is specified as a list.
+    :param cwd: working directory for command (defaults to None).
+    :param env: is the environment to use for the process (defaults to os.environ).
+    :param ignore_children: causes system to ignore child processes when True,
+      defaults to False (which tracks child processes).
+    :param kill_on_timeout: when True, the process will be killed when a timeout is reached.
+      When False, the caller is responsible for killing the process.
+      Failure to do so could cause a call to wait() to hang indefinitely. (Defaults to True.)
+    :param processOutputLine: function or list of functions to be called for
+        each line of output produced by the process (defaults to an empty
+        list).
+    :param processStderrLine: function or list of functions to be called
+        for each line of error output - stderr - produced by the process
+        (defaults to an empty list). If this is not specified, stderr lines
+        will be sent to the *processOutputLine* callbacks.
+    :param onTimeout: function or list of functions to be called when the process times out.
+    :param onFinish: function or list of functions to be called when the process terminates
+      normally without timing out.
+    :param kwargs: additional keyword args to pass directly into Popen.
+
+    NOTE: Child processes will be tracked by default.  If for any reason
+    we are unable to track child processes and ignore_children is set to False,
+    then we will fall back to only tracking the root process.  The fallback
+    will be logged.
+    """
+
+    class Process(subprocess.Popen):
+        """
+        Represents our view of a subprocess.
+        It adds a kill() method which allows it to be stopped explicitly.
+        """
+
+        MAX_IOCOMPLETION_PORT_NOTIFICATION_DELAY = 180
+        MAX_PROCESS_KILL_DELAY = 30
+        TIMEOUT_BEFORE_SIGKILL = 1.0
+
+        def __init__(
+            self,
+            args,
+            bufsize=0,
+            executable=None,
+            stdin=None,
+            stdout=None,
+            stderr=None,
+            preexec_fn=None,
+            close_fds=False,
+            shell=False,
+            cwd=None,
+            env=None,
+            universal_newlines=False,
+            startupinfo=None,
+            creationflags=0,
+            ignore_children=False,
+            encoding="utf-8",
+        ):
+
+            # Parameter for whether or not we should attempt to track child processes
+            self._ignore_children = ignore_children
+            self._job = None
+            self._io_port = None
+
+            if not self._ignore_children and not isWin:
+                # Set the process group id for linux systems
+                # Sets process group id to the pid of the parent process
+                # NOTE: This prevents you from using preexec_fn and managing
+                #       child processes, TODO: Ideally, find a way around this
+                def setpgidfn():
+                    os.setpgid(0, 0)
+
+                preexec_fn = setpgidfn
+
+            kwargs = {
+                "bufsize": bufsize,
+                "executable": executable,
+                "stdin": stdin,
+                "stdout": stdout,
+                "stderr": stderr,
+                "preexec_fn": preexec_fn,
+                "close_fds": close_fds,
+                "shell": shell,
+                "cwd": cwd,
+                "env": env,
+                "startupinfo": startupinfo,
+                "creationflags": creationflags,
+            }
+            if six.PY2:
+                kwargs["universal_newlines"] = universal_newlines
+            if six.PY3 and sys.version_info.minor >= 6 and universal_newlines:
+                kwargs["universal_newlines"] = universal_newlines
+                kwargs["encoding"] = encoding
+            try:
+                subprocess.Popen.__init__(self, args, **kwargs)
+            except OSError:
+                print(args, file=sys.stderr)
+                raise
+            # We need to support Python 3.5 for now, which doesn't support the
+            # "encoding" argument to the Popen constructor. For now, emulate it
+            # by patching the streams so that they return consistent values.
+            # This can be removed once we remove support for Python 3.5.
+            if six.PY3 and sys.version_info.minor == 5 and universal_newlines:
+                if self.stdin is not None:
+                    self.stdin = io.TextIOWrapper(self.stdin, encoding=encoding)
+                if self.stdout is not None:
+                    self.stdout = io.TextIOWrapper(self.stdout, encoding=encoding)
+                if self.stderr is not None:
+                    self.stderr = io.TextIOWrapper(self.stderr, encoding=encoding)
+
+        def debug(self, msg):
+            if not MOZPROCESS_DEBUG:
+                return
+            thread = threading.current_thread().name
+            print("DBG::MOZPROC PID:{} ({}) | {}".format(self.pid, thread, msg))
+
+        def __del__(self):
+            if isWin:
+                if six.PY2:
+                    _maxint = sys.maxint
+                else:
+                    _maxint = sys.maxsize
+                handle = getattr(self, "_handle", None)
+                if handle:
+                    self._internal_poll(_deadstate=_maxint)
+                if handle or self._job or self._io_port:
+                    self._cleanup()
+            else:
+                subprocess.Popen.__del__(self)
+
+        def kill(self, sig=None, timeout=None):
+            if isWin:
+                try:
+                    if not self._ignore_children and self._handle and self._job:
+                        self.debug("calling TerminateJobObject")
+                        winprocess.TerminateJobObject(
+                            self._job, winprocess.ERROR_CONTROL_C_EXIT
+                        )
+                    elif self._handle:
+                        self.debug("calling TerminateProcess")
+                        winprocess.TerminateProcess(
+                            self._handle, winprocess.ERROR_CONTROL_C_EXIT
+                        )
+                except WindowsError:
+                    self._cleanup()
+
+                    traceback.print_exc()
+                    raise OSError("Could not terminate process")
+
+            else:
+
+                def send_sig(sig, retries=0):
+                    pid = self.detached_pid or self.pid
+                    if not self._ignore_children:
+                        try:
+                            os.killpg(pid, sig)
+                        except BaseException as e:
+                            # On Mac OSX if the process group contains zombie
+                            # processes, killpg results in an EPERM.
+                            # In this case, zombie processes need to be reaped
+                            # before continuing
+                            # Note: A negative pid refers to the entire process
+                            # group
+                            if retries < 1 and getattr(e, "errno", None) == errno.EPERM:
+                                try:
+                                    os.waitpid(-pid, 0)
+                                finally:
+                                    return send_sig(sig, retries + 1)
+
+                            # ESRCH is a "no such process" failure, which is fine because the
+                            # application might already have been terminated itself. Any other
+                            # error would indicate a problem in killing the process.
+                            if getattr(e, "errno", None) != errno.ESRCH:
+                                print(
+                                    "Could not terminate process: %s" % self.pid,
+                                    file=sys.stderr,
+                                )
+                                raise
+                    else:
+                        os.kill(pid, sig)
+
+                if sig is None and isPosix:
+                    # ask the process for termination and wait a bit
+                    send_sig(signal.SIGTERM)
+                    limit = time.time() + self.TIMEOUT_BEFORE_SIGKILL
+                    while time.time() <= limit:
+                        if self.poll() is not None:
+                            # process terminated nicely
+                            break
+                        time.sleep(INTERVAL_PROCESS_ALIVE_CHECK)
+                    else:
+                        # process did not terminate - send SIGKILL to force
+                        send_sig(signal.SIGKILL)
+                else:
+                    # a signal was explicitly set or not posix
+                    send_sig(sig or signal.SIGKILL)
+
+            self.returncode = self.wait(timeout)
+            self._cleanup()
+            return self.returncode
+
+        def poll(self):
+            """Popen.poll
+            Check if child process has terminated. Set and return returncode attribute.
+            """
+            # If we have a handle, the process is alive
+            if isWin and getattr(self, "_handle", None):
+                return None
+
+            return subprocess.Popen.poll(self)
+
+        def wait(self, timeout=None):
+            """Popen.wait
+            Called to wait for a running process to shut down and return
+            its exit code
+            Returns the main process's exit code
+            """
+            # This call will be different for each OS
+            self.returncode = self._custom_wait(timeout=timeout)
+            self._cleanup()
+            return self.returncode
+
+        """ Private Members of Process class """
+
+        if isWin:
+            # Redefine the execute child so that we can track process groups
+            def _execute_child(self, *args_tuple):
+                (
+                    args,
+                    executable,
+                    preexec_fn,
+                    close_fds,
+                    pass_fds,
+                    cwd,
+                    env,
+                    startupinfo,
+                    creationflags,
+                    shell,
+                    p2cread,
+                    p2cwrite,
+                    c2pread,
+                    c2pwrite,
+                    errread,
+                    errwrite,
+                    *_,
+                ) = args_tuple
+                if not isinstance(args, six.string_types):
+                    args = subprocess.list2cmdline(args)
+
+                # Always or in the create new process group
+                creationflags |= winprocess.CREATE_NEW_PROCESS_GROUP
+
+                if startupinfo is None:
+                    startupinfo = winprocess.STARTUPINFO()
+
+                if None not in (p2cread, c2pwrite, errwrite):
+                    startupinfo.dwFlags |= winprocess.STARTF_USESTDHANDLES
+                    startupinfo.hStdInput = int(p2cread)
+                    startupinfo.hStdOutput = int(c2pwrite)
+                    startupinfo.hStdError = int(errwrite)
+                if shell:
+                    startupinfo.dwFlags |= winprocess.STARTF_USESHOWWINDOW
+                    startupinfo.wShowWindow = winprocess.SW_HIDE
+                    comspec = os.environ.get("COMSPEC", "cmd.exe")
+                    args = comspec + " /c " + args
+
+                # Determine if we can create a job or create nested jobs.
+                can_create_job = winprocess.CanCreateJobObject()
+                can_nest_jobs = self._can_nest_jobs()
+
+                # Ensure we write a warning message if we are falling back
+                if not (can_create_job or can_nest_jobs) and not self._ignore_children:
+                    # We can't create job objects AND the user wanted us to
+                    # Warn the user about this.
+                    print(
+                        "ProcessManager UNABLE to use job objects to manage "
+                        "child processes",
+                        file=sys.stderr,
+                    )
+
+                # set process creation flags
+                creationflags |= winprocess.CREATE_SUSPENDED
+                creationflags |= winprocess.CREATE_UNICODE_ENVIRONMENT
+                if can_create_job:
+                    creationflags |= winprocess.CREATE_BREAKAWAY_FROM_JOB
+                if not (can_create_job or can_nest_jobs):
+                    # Since we've warned, we just log info here to inform you
+                    # of the consequence of setting ignore_children = True
+                    print("ProcessManager NOT managing child processes")
+
+                # create the process
+                hp, ht, pid, tid = winprocess.CreateProcess(
+                    executable,
+                    args,
+                    None,
+                    None,  # No special security
+                    1,  # Must inherit handles!
+                    creationflags,
+                    winprocess.EnvironmentBlock(env),
+                    cwd,
+                    startupinfo,
+                )
+                self._child_created = True
+                self._handle = hp
+                self._thread = ht
+                self.pid = pid
+                self.tid = tid
+
+                if not self._ignore_children and (can_create_job or can_nest_jobs):
+                    try:
+                        # We create a new job for this process, so that we can kill
+                        # the process and any sub-processes
+                        # Create the IO Completion Port
+                        self._io_port = winprocess.CreateIoCompletionPort()
+                        self._job = winprocess.CreateJobObject()
+
+                        # Now associate the io comp port and the job object
+                        joacp = JOBOBJECT_ASSOCIATE_COMPLETION_PORT(
+                            winprocess.COMPKEY_JOBOBJECT, self._io_port
+                        )
+                        winprocess.SetInformationJobObject(
+                            self._job,
+                            JobObjectAssociateCompletionPortInformation,
+                            addressof(joacp),
+                            sizeof(joacp),
+                        )
+
+                        # Allow subprocesses to break away from us - necessary when
+                        # Firefox restarts, or flash with protected mode
+                        limit_flags = winprocess.JOB_OBJECT_LIMIT_KILL_ON_JOB_CLOSE
+                        if not can_nest_jobs:
+                            # This allows sandbox processes to create their own job,
+                            # and is necessary to set for older versions of Windows
+                            # without nested job support.
+                            limit_flags |= winprocess.JOB_OBJECT_LIMIT_BREAKAWAY_OK
+
+                        jbli = JOBOBJECT_BASIC_LIMIT_INFORMATION(
+                            c_longlong(0),  # per process time limit (ignored)
+                            c_longlong(0),  # per job user time limit (ignored)
+                            limit_flags,
+                            0,  # min working set (ignored)
+                            0,  # max working set (ignored)
+                            0,  # active process limit (ignored)
+                            None,  # affinity (ignored)
+                            0,  # Priority class (ignored)
+                            0,  # Scheduling class (ignored)
+                        )
+
+                        iocntr = IO_COUNTERS()
+                        jeli = JOBOBJECT_EXTENDED_LIMIT_INFORMATION(
+                            jbli,  # basic limit info struct
+                            iocntr,  # io_counters (ignored)
+                            0,  # process mem limit (ignored)
+                            0,  # job mem limit (ignored)
+                            0,  # peak process limit (ignored)
+                            0,
+                        )  # peak job limit (ignored)
+
+                        winprocess.SetInformationJobObject(
+                            self._job,
+                            JobObjectExtendedLimitInformation,
+                            addressof(jeli),
+                            sizeof(jeli),
+                        )
+
+                        # Assign the job object to the process
+                        winprocess.AssignProcessToJobObject(self._job, int(hp))
+
+                        # It's overkill, but we use Queue to signal between threads
+                        # because it handles errors more gracefully than event or condition.
+                        self._process_events = Queue()
+
+                        # Spin up our thread for managing the IO Completion Port
+                        self._procmgrthread = threading.Thread(target=self._procmgr)
+                    except Exception:
+                        print(
+                            """Exception trying to use job objects;
+falling back to not using job objects for managing child processes""",
+                            file=sys.stderr,
+                        )
+                        tb = traceback.format_exc()
+                        print(tb, file=sys.stderr)
+                        # Ensure no dangling handles left behind
+                        self._cleanup_job_io_port()
+                else:
+                    self._job = None
+
+                winprocess.ResumeThread(int(ht))
+                if getattr(self, "_procmgrthread", None):
+                    self._procmgrthread.start()
+                ht.Close()
+
+                for i in (p2cread, c2pwrite, errwrite):
+                    if i is not None:
+                        i.Close()
+
+            # Per:
+            # https://msdn.microsoft.com/en-us/library/windows/desktop/hh448388%28v=vs.85%29.aspx
+            # Nesting jobs came in with windows versions starting with 6.2 according to the table
+            # on this page:
+            # https://msdn.microsoft.com/en-us/library/ms724834%28v=vs.85%29.aspx
+            def _can_nest_jobs(self):
+                winver = sys.getwindowsversion()
+                return winver.major > 6 or winver.major == 6 and winver.minor >= 2
+
+            # Windows Process Manager - watches the IO Completion Port and
+            # keeps track of child processes
+            def _procmgr(self):
+                if not (self._io_port) or not (self._job):
+                    return
+
+                try:
+                    self._poll_iocompletion_port()
+                except KeyboardInterrupt:
+                    raise KeyboardInterrupt
+
+            def _poll_iocompletion_port(self):
+                # Watch the IO Completion port for status
+                self._spawned_procs = {}
+                countdowntokill = 0
+
+                self.debug("start polling IO completion port")
+
+                while True:
+                    msgid = c_ulong(0)
+                    compkey = c_ulong(0)
+                    pid = c_ulong(0)
+                    portstatus = winprocess.GetQueuedCompletionStatus(
+                        self._io_port, byref(msgid), byref(compkey), byref(pid), 5000
+                    )
+
+                    # If the countdowntokill has been activated, we need to check
+                    # if we should start killing the children or not.
+                    if countdowntokill != 0:
+                        diff = datetime.now() - countdowntokill
+                        # Arbitrarily wait 3 minutes for windows to get its act together
+                        # Windows sometimes takes a small nap between notifying the
+                        # IO Completion port and actually killing the children, and we
+                        # don't want to mistake that situation for the situation of an unexpected
+                        # parent abort (which is what we're looking for here).
+                        if diff.seconds > self.MAX_IOCOMPLETION_PORT_NOTIFICATION_DELAY:
+                            print(
+                                "WARNING | IO Completion Port failed to signal "
+                                "process shutdown",
+                                file=sys.stderr,
+                            )
+                            print(
+                                "Parent process %s exited with children alive:"
+                                % self.pid,
+                                file=sys.stderr,
+                            )
+                            print(
+                                "PIDS: %s"
+                                % ", ".join([str(i) for i in self._spawned_procs]),
+                                file=sys.stderr,
+                            )
+                            print(
+                                "Attempting to kill them, but no guarantee of success",
+                                file=sys.stderr,
+                            )
+
+                            self.kill()
+                            self._process_events.put({self.pid: "FINISHED"})
+                            break
+
+                    if not portstatus:
+                        # Check to see what happened
+                        errcode = winprocess.GetLastError()
+                        if errcode == winprocess.ERROR_ABANDONED_WAIT_0:
+                            # Then something has killed the port, break the loop
+                            print(
+                                "IO Completion Port unexpectedly closed",
+                                file=sys.stderr,
+                            )
+                            self._process_events.put({self.pid: "FINISHED"})
+                            break
+                        elif errcode == winprocess.WAIT_TIMEOUT:
+                            # Timeouts are expected, just keep on polling
+                            continue
+                        else:
+                            print(
+                                "Error Code %s trying to query IO Completion Port, "
+                                "exiting" % errcode,
+                                file=sys.stderr,
+                            )
+                            raise WinError(errcode)
+                            break
+
+                    if compkey.value == winprocess.COMPKEY_TERMINATE.value:
+                        self.debug("compkeyterminate detected")
+                        # Then we're done
+                        break
+
+                    # Check the status of the IO Port and do things based on it
+                    if compkey.value == winprocess.COMPKEY_JOBOBJECT.value:
+                        if msgid.value == winprocess.JOB_OBJECT_MSG_ACTIVE_PROCESS_ZERO:
+                            # No processes left, time to shut down
+                            # Signal anyone waiting on us that it is safe to shut down
+                            self.debug("job object msg active processes zero")
+                            self._process_events.put({self.pid: "FINISHED"})
+                            break
+                        elif msgid.value == winprocess.JOB_OBJECT_MSG_NEW_PROCESS:
+                            # New Process started
+                            # Add the child proc to our list in case our parent flakes out on us
+                            # without killing everything.
+                            if pid.value != self.pid:
+                                self._spawned_procs[pid.value] = 1
+                                self.debug(
+                                    "new process detected with pid value: %s"
+                                    % pid.value
+                                )
+                        elif msgid.value == winprocess.JOB_OBJECT_MSG_EXIT_PROCESS:
+                            self.debug("process id %s exited normally" % pid.value)
+                            # One process exited normally
+                            if pid.value == self.pid and len(self._spawned_procs) > 0:
+                                # Parent process dying, start countdown timer
+                                countdowntokill = datetime.now()
+                            elif pid.value in self._spawned_procs:
+                                # Child Process died remove from list
+                                del self._spawned_procs[pid.value]
+                        elif (
+                            msgid.value
+                            == winprocess.JOB_OBJECT_MSG_ABNORMAL_EXIT_PROCESS
+                        ):
+                            # One process existed abnormally
+                            self.debug("process id %s exited abnormally" % pid.value)
+                            if pid.value == self.pid and len(self._spawned_procs) > 0:
+                                # Parent process dying, start countdown timer
+                                countdowntokill = datetime.now()
+                            elif pid.value in self._spawned_procs:
+                                # Child Process died remove from list
+                                del self._spawned_procs[pid.value]
+                        else:
+                            # We don't care about anything else
+                            self.debug("We got a message %s" % msgid.value)
+                            pass
+
+            def _custom_wait(self, timeout=None):
+                """Custom implementation of wait.
+
+                - timeout: number of seconds before timing out. If None,
+                  will wait indefinitely.
+                """
+                # First, check to see if the process is still running
+                if self._handle:
+                    self.returncode = winprocess.GetExitCodeProcess(self._handle)
+                else:
+                    # Dude, the process is like totally dead!
+                    return self.returncode
+
+                threadalive = False
+                if hasattr(self, "_procmgrthread"):
+                    threadalive = self._procmgrthread.is_alive()
+                if (
+                    self._job
+                    and threadalive
+                    and threading.current_thread() != self._procmgrthread
+                ):
+                    self.debug("waiting with IO completion port")
+                    if timeout is None:
+                        timeout = (
+                            self.MAX_IOCOMPLETION_PORT_NOTIFICATION_DELAY
+                            + self.MAX_PROCESS_KILL_DELAY
+                        )
+                    # Then we are managing with IO Completion Ports
+                    # wait on a signal so we know when we have seen the last
+                    # process come through.
+                    # We use queues to synchronize between the thread and this
+                    # function because events just didn't have robust enough error
+                    # handling on pre-2.7 versions
+                    try:
+                        # timeout is the max amount of time the procmgr thread will wait for
+                        # child processes to shutdown before killing them with extreme prejudice.
+                        item = self._process_events.get(timeout=timeout)
+                        if item[self.pid] == "FINISHED":
+                            self.debug("received 'FINISHED' from _procmgrthread")
+                            self._process_events.task_done()
+                    except Exception:
+                        traceback.print_exc()
+                        raise OSError(
+                            "IO Completion Port failed to signal process shutdown"
+                        )
+                    finally:
+                        if self._handle:
+                            self.returncode = winprocess.GetExitCodeProcess(
+                                self._handle
+                            )
+                        self._cleanup()
+
+                else:
+                    # Not managing with job objects, so all we can reasonably do
+                    # is call waitforsingleobject and hope for the best
+                    self.debug("waiting without IO completion port")
+
+                    if not self._ignore_children:
+                        self.debug("NOT USING JOB OBJECTS!!!")
+                    # First, make sure we have not already ended
+                    if self.returncode != winprocess.STILL_ACTIVE:
+                        self._cleanup()
+                        return self.returncode
+
+                    rc = None
+                    if self._handle:
+                        if timeout is None:
+                            timeout = -1
+                        else:
+                            # timeout for WaitForSingleObject is in ms
+                            timeout = timeout * 1000
+
+                        rc = winprocess.WaitForSingleObject(self._handle, timeout)
+
+                    if rc == winprocess.WAIT_TIMEOUT:
+                        # The process isn't dead, so kill it
+                        print(
+                            "Timed out waiting for process to close, "
+                            "attempting TerminateProcess"
+                        )
+                        self.kill()
+                    elif rc == winprocess.WAIT_OBJECT_0:
+                        # We caught WAIT_OBJECT_0, which indicates all is well
+                        print("Single process terminated successfully")
+                        self.returncode = winprocess.GetExitCodeProcess(self._handle)
+                    else:
+                        # An error occured we should probably throw
+                        rc = winprocess.GetLastError()
+                        if rc:
+                            raise WinError(rc)
+
+                    self._cleanup()
+
+                return self.returncode
+
+            def _cleanup_job_io_port(self):
+                """Do the job and IO port cleanup separately because there are
+                cases where we want to clean these without killing _handle
+                (i.e. if we fail to create the job object in the first place)
+                """
+                if (
+                    getattr(self, "_job")
+                    and self._job != winprocess.INVALID_HANDLE_VALUE
+                ):
+                    self._job.Close()
+                    self._job = None
+                else:
+                    # If windows already freed our handle just set it to none
+                    # (saw this intermittently while testing)
+                    self._job = None
+
+                if (
+                    getattr(self, "_io_port", None)
+                    and self._io_port != winprocess.INVALID_HANDLE_VALUE
+                ):
+                    self._io_port.Close()
+                    self._io_port = None
+                else:
+                    self._io_port = None
+
+                if getattr(self, "_procmgrthread", None):
+                    self._procmgrthread = None
+
+            def _cleanup(self):
+                self._cleanup_job_io_port()
+                if self._thread and self._thread != winprocess.INVALID_HANDLE_VALUE:
+                    self._thread.Close()
+                    self._thread = None
+                else:
+                    self._thread = None
+
+                if self._handle and self._handle != winprocess.INVALID_HANDLE_VALUE:
+                    self._handle.Close()
+                    self._handle = None
+                else:
+                    self._handle = None
+
+        else:
+
+            def _custom_wait(self, timeout=None):
+                """Haven't found any reason to differentiate between these platforms
+                so they all use the same wait callback.  If it is necessary to
+                craft different styles of wait, then a new _custom_wait method
+                could be easily implemented.
+                """
+                # For non-group wait, call base class
+                try:
+                    if six.PY2:
+                        subprocess.Popen.wait(self)
+                    else:
+                        # timeout was introduced in Python 3.3
+                        subprocess.Popen.wait(self, timeout=timeout)
+                except subprocess.TimeoutExpired:
+                    # We want to return None in this case
+                    pass
+                return self.returncode
+
+            def _cleanup(self):
+                pass
+
+    def __init__(
+        self,
+        cmd,
+        args=None,
+        cwd=None,
+        env=None,
+        ignore_children=False,
+        kill_on_timeout=True,
+        processOutputLine=(),
+        processStderrLine=(),
+        onTimeout=(),
+        onFinish=(),
+        **kwargs
+    ):
+        self.cmd = cmd
+        self.args = args
+        self.cwd = cwd
+        self.didTimeout = False
+        self.didOutputTimeout = False
+        self._ignore_children = ignore_children
+        self.keywordargs = kwargs
+        self.read_buffer = ""
+
+        if env is None:
+            env = os.environ.copy()
+        self.env = env
+
+        # handlers
+        def to_callable_list(arg):
+            if callable(arg):
+                arg = [arg]
+            return CallableList(arg)
+
+        processOutputLine = to_callable_list(processOutputLine)
+        processStderrLine = to_callable_list(processStderrLine)
+        onTimeout = to_callable_list(onTimeout)
+        onFinish = to_callable_list(onFinish)
+
+        def on_timeout():
+            self.didTimeout = True
+            self.didOutputTimeout = self.reader.didOutputTimeout
+            if kill_on_timeout:
+                self.kill()
+
+        onTimeout.insert(0, on_timeout)
+
+        self._stderr = subprocess.STDOUT
+        if processStderrLine:
+            self._stderr = subprocess.PIPE
+        self.reader = ProcessReader(
+            stdout_callback=processOutputLine,
+            stderr_callback=processStderrLine,
+            finished_callback=onFinish,
+            timeout_callback=onTimeout,
+        )
+
+        # It is common for people to pass in the entire array with the cmd and
+        # the args together since this is how Popen uses it.  Allow for that.
+        if isinstance(self.cmd, list):
+            if self.args is not None:
+                raise TypeError("cmd and args must not both be lists")
+            (self.cmd, self.args) = (self.cmd[0], self.cmd[1:])
+        elif self.args is None:
+            self.args = []
+
+    def debug(self, msg):
+        if not MOZPROCESS_DEBUG:
+            return
+        cmd = self.cmd.split(os.sep)[-1:]
+        print("DBG::MOZPROC ProcessHandlerMixin {} | {}".format(cmd, msg))
+
+    @property
+    def timedOut(self):
+        """True if the process has timed out for any reason."""
+        return self.didTimeout
+
+    @property
+    def outputTimedOut(self):
+        """True if the process has timed out for no output."""
+        return self.didOutputTimeout
+
+    @property
+    def commandline(self):
+        """the string value of the command line (command + args)"""
+        return subprocess.list2cmdline([self.cmd] + self.args)
+
+    def run(self, timeout=None, outputTimeout=None):
+        """
+        Starts the process.
+
+        If timeout is not None, the process will be allowed to continue for
+        that number of seconds before being killed. If the process is killed
+        due to a timeout, the onTimeout handler will be called.
+
+        If outputTimeout is not None, the process will be allowed to continue
+        for that number of seconds without producing any output before
+        being killed.
+        """
+        self.didTimeout = False
+        self.didOutputTimeout = False
+
+        # default arguments
+        args = dict(
+            stdout=subprocess.PIPE,
+            stderr=self._stderr,
+            cwd=self.cwd,
+            env=self.env,
+            ignore_children=self._ignore_children,
+        )
+
+        # build process arguments
+        args.update(self.keywordargs)
+
+        # launch the process
+        self.proc = self.Process([self.cmd] + self.args, **args)
+
+        if isPosix:
+            # Keep track of the initial process group in case the process detaches itself
+            self.proc.pgid = self._getpgid(self.proc.pid)
+            self.proc.detached_pid = None
+
+        self.processOutput(timeout=timeout, outputTimeout=outputTimeout)
+
+    def kill(self, sig=None, timeout=None):
+        """
+        Kills the managed process.
+
+        If you created the process with 'ignore_children=False' (the
+        default) then it will also also kill all child processes spawned by
+        it. If you specified 'ignore_children=True' when creating the
+        process, only the root process will be killed.
+
+        Note that this does not manage any state, save any output etc,
+        it immediately kills the process.
+
+        :param sig: Signal used to kill the process, defaults to SIGKILL
+                    (has no effect on Windows)
+        """
+        if not hasattr(self, "proc"):
+            raise RuntimeError("Process hasn't been started yet")
+
+        self.proc.kill(sig=sig, timeout=timeout)
+
+        # When we kill the the managed process we also have to wait for the
+        # reader thread to be finished. Otherwise consumers would have to assume
+        # that it still has not completely shutdown.
+        rc = self.wait(timeout)
+        if rc is None:
+            self.debug("kill: wait failed -- process is still alive")
+        return rc
+
+    def poll(self):
+        """Check if child process has terminated
+
+        Returns the current returncode value:
+        - None if the process hasn't terminated yet
+        - A negative number if the process was killed by signal N (Unix only)
+        - '0' if the process ended without failures
+
+        """
+        if not hasattr(self, "proc"):
+            raise RuntimeError("Process hasn't been started yet")
+
+        # Ensure that we first check for the reader status. Otherwise
+        # we might mark the process as finished while output is still getting
+        # processed.
+        elif self.reader.is_alive():
+            return None
+        elif hasattr(self, "returncode"):
+            return self.returncode
+        else:
+            return self.proc.poll()
+
+    def processOutput(self, timeout=None, outputTimeout=None):
+        """
+        Handle process output until the process terminates or times out.
+
+        If timeout is not None, the process will be allowed to continue for
+        that number of seconds before being killed.
+
+        If outputTimeout is not None, the process will be allowed to continue
+        for that number of seconds without producing any output before
+        being killed.
+        """
+        # this method is kept for backward compatibility
+        if not hasattr(self, "proc"):
+            self.run(timeout=timeout, outputTimeout=outputTimeout)
+            # self.run will call this again
+            return
+        if not self.reader.is_alive():
+            self.reader.timeout = timeout
+            self.reader.output_timeout = outputTimeout
+            self.reader.start(self.proc)
+
+    def wait(self, timeout=None):
+        """
+        Waits until all output has been read and the process is
+        terminated.
+
+        If timeout is not None, will return after timeout seconds.
+        This timeout only causes the wait function to return and
+        does not kill the process.
+
+        Returns the process exit code value:
+        - None if the process hasn't terminated yet
+        - A negative number if the process was killed by signal N (Unix only)
+        - '0' if the process ended without failures
+
+        """
+        # Thread.join() blocks the main thread until the reader thread is finished
+        # wake up once a second in case a keyboard interrupt is sent
+        if self.reader.thread and self.reader.thread is not threading.current_thread():
+            count = 0
+            while self.reader.is_alive():
+                self.reader.join(timeout=1)
+                count += 1
+                if timeout is not None and count > timeout:
+                    self.debug("wait timeout for reader thread")
+                    return None
+
+        self.returncode = self.proc.wait(timeout)
+        return self.returncode
+
+    @property
+    def pid(self):
+        if not hasattr(self, "proc"):
+            raise RuntimeError("Process hasn't been started yet")
+
+        return self.proc.pid
+
+    @staticmethod
+    def pid_exists(pid):
+        if pid < 0:
+            return False
+
+        if isWin:
+            try:
+                process = winprocess.OpenProcess(
+                    winprocess.PROCESS_QUERY_INFORMATION | winprocess.PROCESS_VM_READ,
+                    False,
+                    pid,
+                )
+                return winprocess.GetExitCodeProcess(process) == winprocess.STILL_ACTIVE
+
+            except WindowsError as e:
+                # no such process
+                if e.winerror == winprocess.ERROR_INVALID_PARAMETER:
+                    return False
+
+                # access denied
+                if e.winerror == winprocess.ERROR_ACCESS_DENIED:
+                    return True
+
+                # re-raise for any other type of exception
+                raise
+
+        elif isPosix:
+            try:
+                os.kill(pid, 0)
+            except OSError as e:
+                return e.errno == errno.EPERM
+            else:
+                return True
+
+    @classmethod
+    def _getpgid(cls, pid):
+        try:
+            return os.getpgid(pid)
+        except OSError as e:
+            # Do not raise for "No such process"
+            if e.errno != errno.ESRCH:
+                raise
+
+    def check_for_detached(self, new_pid):
+        """Check if the current process has been detached and mark it appropriately.
+
+        In case of application restarts the process can spawn itself into a new process group.
+        From now on the process can no longer be tracked by mozprocess anymore and has to be
+        marked as detached. If the consumer of mozprocess still knows the new process id it could
+        check for the detached state.
+
+        new_pid is the new process id of the child process.
+        """
+        if not hasattr(self, "proc"):
+            raise RuntimeError("Process hasn't been started yet")
+
+        if isPosix:
+            new_pgid = self._getpgid(new_pid)
+
+            if new_pgid and new_pgid != self.proc.pgid:
+                self.proc.detached_pid = new_pid
+                print(
+                    'Child process with id "%s" has been marked as detached because it is no '
+                    "longer in the managed process group. Keeping reference to the process id "
+                    '"%s" which is the new child process.' % (self.pid, new_pid),
+                    file=sys.stdout,
+                )
+
+
+class CallableList(list):
+    def __call__(self, *args, **kwargs):
+        for e in self:
+            e(*args, **kwargs)
+
+    def __add__(self, lst):
+        return CallableList(list.__add__(self, lst))
+
+
+class ProcessReader(object):
+    def __init__(
+        self,
+        stdout_callback=None,
+        stderr_callback=None,
+        finished_callback=None,
+        timeout_callback=None,
+        timeout=None,
+        output_timeout=None,
+    ):
+        self.stdout_callback = stdout_callback or (lambda line: True)
+        self.stderr_callback = stderr_callback or (lambda line: True)
+        self.finished_callback = finished_callback or (lambda: True)
+        self.timeout_callback = timeout_callback or (lambda: True)
+        self.timeout = timeout
+        self.output_timeout = output_timeout
+        self.thread = None
+        self.didOutputTimeout = False
+
+    def debug(self, msg):
+        if not MOZPROCESS_DEBUG:
+            return
+        print("DBG::MOZPROC ProcessReader | {}".format(msg))
+
+    def _create_stream_reader(self, name, stream, queue, callback):
+        thread = threading.Thread(
+            name=name, target=self._read_stream, args=(stream, queue, callback)
+        )
+        thread.daemon = True
+        thread.start()
+        return thread
+
+    def _read_stream(self, stream, queue, callback):
+        while True:
+            line = stream.readline()
+            if not line:
+                break
+            queue.put((line, callback))
+        stream.close()
+
+    def start(self, proc):
+        queue = Queue()
+        stdout_reader = None
+        if proc.stdout:
+            stdout_reader = self._create_stream_reader(
+                "ProcessReaderStdout", proc.stdout, queue, self.stdout_callback
+            )
+        stderr_reader = None
+        if proc.stderr and proc.stderr != proc.stdout:
+            stderr_reader = self._create_stream_reader(
+                "ProcessReaderStderr", proc.stderr, queue, self.stderr_callback
+            )
+        self.thread = threading.Thread(
+            name="ProcessReader",
+            target=self._read,
+            args=(stdout_reader, stderr_reader, queue),
+        )
+        self.thread.daemon = True
+        self.thread.start()
+        self.debug("ProcessReader started")
+
+    def _read(self, stdout_reader, stderr_reader, queue):
+        start_time = time.time()
+        timed_out = False
+        timeout = self.timeout
+        if timeout is not None:
+            timeout += start_time
+        output_timeout = self.output_timeout
+        if output_timeout is not None:
+            output_timeout += start_time
+
+        while (stdout_reader and stdout_reader.is_alive()) or (
+            stderr_reader and stderr_reader.is_alive()
+        ):
+            has_line = True
+            try:
+                line, callback = queue.get(True, INTERVAL_PROCESS_ALIVE_CHECK)
+            except Empty:
+                has_line = False
+            now = time.time()
+            if not has_line:
+                if output_timeout is not None and now > output_timeout:
+                    timed_out = True
+                    self.didOutputTimeout = True
+                    break
+            else:
+                if output_timeout is not None:
+                    output_timeout = now + self.output_timeout
+                callback(line.rstrip())
+            if timeout is not None and now > timeout:
+                timed_out = True
+                break
+        self.debug("_read loop exited")
+        # process remaining lines to read
+        while not queue.empty():
+            line, callback = queue.get(False)
+            try:
+                callback(line.rstrip())
+            except Exception:
+                traceback.print_exc()
+        if timed_out:
+            try:
+                self.timeout_callback()
+            except Exception:
+                traceback.print_exc()
+        if stdout_reader:
+            stdout_reader.join()
+        if stderr_reader:
+            stderr_reader.join()
+        if not timed_out:
+            try:
+                self.finished_callback()
+            except Exception:
+                traceback.print_exc()
+        self.debug("_read exited")
+
+    def is_alive(self):
+        if self.thread:
+            return self.thread.is_alive()
+        return False
+
+    def join(self, timeout=None):
+        if self.thread:
+            self.thread.join(timeout=timeout)
+
+
+# default output handlers
+# these should be callables that take the output line
+
+
+class StoreOutput(object):
+    """accumulate stdout"""
+
+    def __init__(self):
+        self.output = []
+
+    def __call__(self, line):
+        self.output.append(line)
+
+
+class StreamOutput(object):
+    """pass output to a stream and flush"""
+
+    def __init__(self, stream, text=True):
+        self.stream = stream
+        self.text = text
+
+    def __call__(self, line):
+        ensure = six.ensure_text if self.text else six.ensure_binary
+        try:
+            self.stream.write(ensure(line, errors="ignore") + ensure("\n"))
+        except TypeError:
+            print(
+                "HEY! If you're reading this, you're about to encounter a "
+                "type error, probably as a result of a conversion from "
+                "Python 2 to Python 3. This is almost definitely because "
+                "you're trying to write binary data to a text-encoded "
+                "stream, or text data to a binary-encoded stream. Check how "
+                "you're instantiating your ProcessHandler and if the output "
+                "should be text-encoded, make sure you pass "
+                "universal_newlines=True.",
+                file=sys.stderr,
+            )
+            raise
+        self.stream.flush()
+
+
+class LogOutput(StreamOutput):
+    """pass output to a file"""
+
+    def __init__(self, filename):
+        self.file_obj = open(filename, "a")
+        StreamOutput.__init__(self, self.file_obj, True)
+
+    def __del__(self):
+        if self.file_obj is not None:
+            self.file_obj.close()
+
+
+# front end class with the default handlers
+
+
+class ProcessHandler(ProcessHandlerMixin):
+    """
+    Convenience class for handling processes with default output handlers.
+
+    By default, all output is sent to stdout. This can be disabled by setting
+    the *stream* argument to None.
+
+    If processOutputLine keyword argument is specified the function or the
+    list of functions specified by this argument will be called for each line
+    of output; the output will not be written to stdout automatically then
+    if stream is True (the default).
+
+    If storeOutput==True, the output produced by the process will be saved
+    as self.output.
+
+    If logfile is not None, the output produced by the process will be
+    appended to the given file.
+    """
+
+    def __init__(self, cmd, logfile=None, stream=True, storeOutput=True, **kwargs):
+        kwargs.setdefault("processOutputLine", [])
+        if callable(kwargs["processOutputLine"]):
+            kwargs["processOutputLine"] = [kwargs["processOutputLine"]]
+
+        if logfile:
+            logoutput = LogOutput(logfile)
+            kwargs["processOutputLine"].append(logoutput)
+
+        text = kwargs.get("universal_newlines", False) or kwargs.get("text", False)
+
+        if stream is True:
+            # Print to standard output only if no outputline provided
+            stdout = sys.stdout
+            if six.PY2 and text:
+                stdout = codecs.getwriter("utf-8")(sys.stdout)
+            elif six.PY3 and text:
+                # The encoding of stdout isn't guaranteed to be utf-8. Fix that.
+                stdout = codecs.getwriter("utf-8")(sys.stdout.buffer)
+            elif six.PY3 and not text:
+                stdout = sys.stdout.buffer
+
+            if not kwargs["processOutputLine"]:
+                kwargs["processOutputLine"].append(StreamOutput(stdout, text))
+        elif stream:
+            streamoutput = StreamOutput(stream, text)
+            kwargs["processOutputLine"].append(streamoutput)
+
+        self.output = None
+        if storeOutput:
+            storeoutput = StoreOutput()
+            self.output = storeoutput.output
+            kwargs["processOutputLine"].append(storeoutput)
+
+        ProcessHandlerMixin.__init__(self, cmd, **kwargs)
diff --git a/testing/mozbase/mozprocess/mozprocess/qijo.py b/testing/mozbase/mozprocess/mozprocess/qijo.py
new file mode 100644
index 0000000000..a9cedd2ad5
--- /dev/null
+++ b/testing/mozbase/mozprocess/mozprocess/qijo.py
@@ -0,0 +1,175 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this file,
+# You can obtain one at http://mozilla.org/MPL/2.0/.
+
+from ctypes import (
+    POINTER,
+    WINFUNCTYPE,
+    Structure,
+    WinError,
+    addressof,
+    c_size_t,
+    c_ulong,
+    c_void_p,
+    sizeof,
+    windll,
+)
+from ctypes.wintypes import BOOL, BYTE, DWORD, HANDLE, LARGE_INTEGER
+
+import six
+
+LPVOID = c_void_p
+LPDWORD = POINTER(DWORD)
+SIZE_T = c_size_t
+ULONG_PTR = POINTER(c_ulong)
+
+# A ULONGLONG is a 64-bit unsigned integer.
+# Thus there are 8 bytes in a ULONGLONG.
+# XXX why not import c_ulonglong ?
+ULONGLONG = BYTE * 8
+
+
+class IO_COUNTERS(Structure):
+    # The IO_COUNTERS struct is 6 ULONGLONGs.
+    # TODO: Replace with non-dummy fields.
+    _fields_ = [("dummy", ULONGLONG * 6)]
+
+
+class JOBOBJECT_BASIC_ACCOUNTING_INFORMATION(Structure):
+    _fields_ = [
+        ("TotalUserTime", LARGE_INTEGER),
+        ("TotalKernelTime", LARGE_INTEGER),
+        ("ThisPeriodTotalUserTime", LARGE_INTEGER),
+        ("ThisPeriodTotalKernelTime", LARGE_INTEGER),
+        ("TotalPageFaultCount", DWORD),
+        ("TotalProcesses", DWORD),
+        ("ActiveProcesses", DWORD),
+        ("TotalTerminatedProcesses", DWORD),
+    ]
+
+
+class JOBOBJECT_BASIC_AND_IO_ACCOUNTING_INFORMATION(Structure):
+    _fields_ = [
+        ("BasicInfo", JOBOBJECT_BASIC_ACCOUNTING_INFORMATION),
+        ("IoInfo", IO_COUNTERS),
+    ]
+
+
+# see http://msdn.microsoft.com/en-us/library/ms684147%28VS.85%29.aspx
+class JOBOBJECT_BASIC_LIMIT_INFORMATION(Structure):
+    _fields_ = [
+        ("PerProcessUserTimeLimit", LARGE_INTEGER),
+        ("PerJobUserTimeLimit", LARGE_INTEGER),
+        ("LimitFlags", DWORD),
+        ("MinimumWorkingSetSize", SIZE_T),
+        ("MaximumWorkingSetSize", SIZE_T),
+        ("ActiveProcessLimit", DWORD),
+        ("Affinity", ULONG_PTR),
+        ("PriorityClass", DWORD),
+        ("SchedulingClass", DWORD),
+    ]
+
+
+class JOBOBJECT_ASSOCIATE_COMPLETION_PORT(Structure):
+    _fields_ = [("CompletionKey", c_ulong), ("CompletionPort", HANDLE)]
+
+
+# see http://msdn.microsoft.com/en-us/library/ms684156%28VS.85%29.aspx
+class JOBOBJECT_EXTENDED_LIMIT_INFORMATION(Structure):
+    _fields_ = [
+        ("BasicLimitInformation", JOBOBJECT_BASIC_LIMIT_INFORMATION),
+        ("IoInfo", IO_COUNTERS),
+        ("ProcessMemoryLimit", SIZE_T),
+        ("JobMemoryLimit", SIZE_T),
+        ("PeakProcessMemoryUsed", SIZE_T),
+        ("PeakJobMemoryUsed", SIZE_T),
+    ]
+
+
+# These numbers below come from:
+# http://msdn.microsoft.com/en-us/library/ms686216%28v=vs.85%29.aspx
+JobObjectAssociateCompletionPortInformation = 7
+JobObjectBasicAndIoAccountingInformation = 8
+JobObjectExtendedLimitInformation = 9
+
+
+class JobObjectInfo(object):
+    mapping = {
+        "JobObjectBasicAndIoAccountingInformation": 8,
+        "JobObjectExtendedLimitInformation": 9,
+        "JobObjectAssociateCompletionPortInformation": 7,
+    }
+    structures = {
+        7: JOBOBJECT_ASSOCIATE_COMPLETION_PORT,
+        8: JOBOBJECT_BASIC_AND_IO_ACCOUNTING_INFORMATION,
+        9: JOBOBJECT_EXTENDED_LIMIT_INFORMATION,
+    }
+
+    def __init__(self, _class):
+        if isinstance(_class, six.string_types):
+            assert _class in self.mapping, "Class should be one of %s; you gave %s" % (
+                self.mapping,
+                _class,
+            )
+            _class = self.mapping[_class]
+        assert _class in self.structures, "Class should be one of %s; you gave %s" % (
+            self.structures,
+            _class,
+        )
+        self.code = _class
+        self.info = self.structures[_class]()
+
+
+QueryInformationJobObjectProto = WINFUNCTYPE(
+    BOOL,  # Return type
+    HANDLE,  # hJob
+    DWORD,  # JobObjectInfoClass
+    LPVOID,  # lpJobObjectInfo
+    DWORD,  # cbJobObjectInfoLength
+    LPDWORD,  # lpReturnLength
+)
+
+QueryInformationJobObjectFlags = (
+    (1, "hJob"),
+    (1, "JobObjectInfoClass"),
+    (1, "lpJobObjectInfo"),
+    (1, "cbJobObjectInfoLength"),
+    (1, "lpReturnLength", None),
+)
+
+_QueryInformationJobObject = QueryInformationJobObjectProto(
+    ("QueryInformationJobObject", windll.kernel32), QueryInformationJobObjectFlags
+)
+
+
+class SubscriptableReadOnlyStruct(object):
+    def __init__(self, struct):
+        self._struct = struct
+
+    def _delegate(self, name):
+        result = getattr(self._struct, name)
+        if isinstance(result, Structure):
+            return SubscriptableReadOnlyStruct(result)
+        return result
+
+    def __getitem__(self, name):
+        match = [fname for fname, ftype in self._struct._fields_ if fname == name]
+        if match:
+            return self._delegate(name)
+        raise KeyError(name)
+
+    def __getattr__(self, name):
+        return self._delegate(name)
+
+
+def QueryInformationJobObject(hJob, JobObjectInfoClass):
+    jobinfo = JobObjectInfo(JobObjectInfoClass)
+    result = _QueryInformationJobObject(
+        hJob=hJob,
+        JobObjectInfoClass=jobinfo.code,
+        lpJobObjectInfo=addressof(jobinfo.info),
+        cbJobObjectInfoLength=sizeof(jobinfo.info),
+    )
+    if not result:
+        raise WinError()
+    return SubscriptableReadOnlyStruct(jobinfo.info)
diff --git a/testing/mozbase/mozprocess/mozprocess/winprocess.py b/testing/mozbase/mozprocess/mozprocess/winprocess.py
new file mode 100644
index 0000000000..1d0bfe9676
--- /dev/null
+++ b/testing/mozbase/mozprocess/mozprocess/winprocess.py
@@ -0,0 +1,565 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# A module to expose various thread/process/job related structures and
+# methods from kernel32
+#
+# The MIT License
+#
+# Copyright (c) 2003-2004 by Peter Astrand <astrand@lysator.liu.se>
+#
+# Additions and modifications written by Benjamin Smedberg
+# <benjamin@smedbergs.us> are Copyright (c) 2006 by the Mozilla Foundation
+# <http://www.mozilla.org/>
+#
+# More Modifications
+# Copyright (c) 2006-2007 by Mike Taylor <bear@code-bear.com>
+# Copyright (c) 2007-2008 by Mikeal Rogers <mikeal@mozilla.com>
+#
+# By obtaining, using, and/or copying this software and/or its
+# associated documentation, you agree that you have read, understood,
+# and will comply with the following terms and conditions:
+#
+# Permission to use, copy, modify, and distribute this software and
+# its associated documentation for any purpose and without fee is
+# hereby granted, provided that the above copyright notice appears in
+# all copies, and that both that copyright notice and this permission
+# notice appear in supporting documentation, and that the name of the
+# author not be used in advertising or publicity pertaining to
+# distribution of the software without specific, written prior
+# permission.
+#
+# THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+# INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS.
+# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+# CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
+# OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
+# NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
+# WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+import subprocess
+import sys
+from ctypes import (
+    POINTER,
+    WINFUNCTYPE,
+    Structure,
+    WinError,
+    c_ulong,
+    c_void_p,
+    cast,
+    create_unicode_buffer,
+    sizeof,
+    windll,
+)
+from ctypes.wintypes import BOOL, BYTE, DWORD, HANDLE, LPCWSTR, LPWSTR, UINT, WORD
+
+from .qijo import QueryInformationJobObject
+
+LPVOID = c_void_p
+LPBYTE = POINTER(BYTE)
+LPDWORD = POINTER(DWORD)
+LPBOOL = POINTER(BOOL)
+LPULONG = POINTER(c_ulong)
+
+
+def ErrCheckBool(result, func, args):
+    """errcheck function for Windows functions that return a BOOL True
+    on success"""
+    if not result:
+        raise WinError()
+    return args
+
+
+# AutoHANDLE
+
+
+class AutoHANDLE(HANDLE):
+    """Subclass of HANDLE which will call CloseHandle() on deletion."""
+
+    CloseHandleProto = WINFUNCTYPE(BOOL, HANDLE)
+    CloseHandle = CloseHandleProto(("CloseHandle", windll.kernel32))
+    CloseHandle.errcheck = ErrCheckBool
+
+    def Close(self):
+        if self.value and self.value != HANDLE(-1).value:
+            self.CloseHandle(self)
+            self.value = 0
+
+    def __del__(self):
+        self.Close()
+
+    def __int__(self):
+        return self.value
+
+
+def ErrCheckHandle(result, func, args):
+    """errcheck function for Windows functions that return a HANDLE."""
+    if not result:
+        raise WinError()
+    return AutoHANDLE(result)
+
+
+# PROCESS_INFORMATION structure
+
+
+class PROCESS_INFORMATION(Structure):
+    _fields_ = [
+        ("hProcess", HANDLE),
+        ("hThread", HANDLE),
+        ("dwProcessID", DWORD),
+        ("dwThreadID", DWORD),
+    ]
+
+    def __init__(self):
+        Structure.__init__(self)
+
+        self.cb = sizeof(self)
+
+
+LPPROCESS_INFORMATION = POINTER(PROCESS_INFORMATION)
+
+
+# STARTUPINFO structure
+
+
+class STARTUPINFO(Structure):
+    _fields_ = [
+        ("cb", DWORD),
+        ("lpReserved", LPWSTR),
+        ("lpDesktop", LPWSTR),
+        ("lpTitle", LPWSTR),
+        ("dwX", DWORD),
+        ("dwY", DWORD),
+        ("dwXSize", DWORD),
+        ("dwYSize", DWORD),
+        ("dwXCountChars", DWORD),
+        ("dwYCountChars", DWORD),
+        ("dwFillAttribute", DWORD),
+        ("dwFlags", DWORD),
+        ("wShowWindow", WORD),
+        ("cbReserved2", WORD),
+        ("lpReserved2", LPBYTE),
+        ("hStdInput", HANDLE),
+        ("hStdOutput", HANDLE),
+        ("hStdError", HANDLE),
+    ]
+
+
+LPSTARTUPINFO = POINTER(STARTUPINFO)
+
+SW_HIDE = 0
+
+STARTF_USESHOWWINDOW = 0x01
+STARTF_USESIZE = 0x02
+STARTF_USEPOSITION = 0x04
+STARTF_USECOUNTCHARS = 0x08
+STARTF_USEFILLATTRIBUTE = 0x10
+STARTF_RUNFULLSCREEN = 0x20
+STARTF_FORCEONFEEDBACK = 0x40
+STARTF_FORCEOFFFEEDBACK = 0x80
+STARTF_USESTDHANDLES = 0x100
+
+
+# EnvironmentBlock
+
+
+class EnvironmentBlock:
+    """An object which can be passed as the lpEnv parameter of CreateProcess.
+    It is initialized with a dictionary."""
+
+    def __init__(self, env):
+        if not env:
+            self._as_parameter_ = None
+        else:
+            values = []
+            fs_encoding = sys.getfilesystemencoding() or "mbcs"
+            for k, v in env.items():
+                if isinstance(k, bytes):
+                    k = k.decode(fs_encoding, "replace")
+                if isinstance(v, bytes):
+                    v = v.decode(fs_encoding, "replace")
+                values.append("{}={}".format(k, v))
+
+            # The lpEnvironment parameter of the 'CreateProcess' function expects a series
+            # of null terminated strings followed by a final null terminator. We write this
+            # value to a buffer and then cast it to LPCWSTR to avoid a Python ctypes bug
+            # that probihits embedded null characters (https://bugs.python.org/issue32745).
+            values = create_unicode_buffer("\0".join(values) + "\0")
+            self._as_parameter_ = cast(values, LPCWSTR)
+
+
+# Error Messages we need to watch for go here
+
+# https://msdn.microsoft.com/en-us/library/windows/desktop/ms681382(v=vs.85).aspx (0 - 499)
+ERROR_ACCESS_DENIED = 5
+ERROR_INVALID_PARAMETER = 87
+
+# http://msdn.microsoft.com/en-us/library/ms681388%28v=vs.85%29.aspx (500 - 999)
+ERROR_ABANDONED_WAIT_0 = 735
+
+# GetLastError()
+GetLastErrorProto = WINFUNCTYPE(DWORD)  # Return Type
+GetLastErrorFlags = ()
+GetLastError = GetLastErrorProto(("GetLastError", windll.kernel32), GetLastErrorFlags)
+
+# CreateProcess()
+
+CreateProcessProto = WINFUNCTYPE(
+    BOOL,  # Return type
+    LPCWSTR,  # lpApplicationName
+    LPWSTR,  # lpCommandLine
+    LPVOID,  # lpProcessAttributes
+    LPVOID,  # lpThreadAttributes
+    BOOL,  # bInheritHandles
+    DWORD,  # dwCreationFlags
+    LPVOID,  # lpEnvironment
+    LPCWSTR,  # lpCurrentDirectory
+    LPSTARTUPINFO,  # lpStartupInfo
+    LPPROCESS_INFORMATION,  # lpProcessInformation
+)
+
+CreateProcessFlags = (
+    (1, "lpApplicationName", None),
+    (1, "lpCommandLine"),
+    (1, "lpProcessAttributes", None),
+    (1, "lpThreadAttributes", None),
+    (1, "bInheritHandles", True),
+    (1, "dwCreationFlags", 0),
+    (1, "lpEnvironment", None),
+    (1, "lpCurrentDirectory", None),
+    (1, "lpStartupInfo"),
+    (2, "lpProcessInformation"),
+)
+
+
+def ErrCheckCreateProcess(result, func, args):
+    ErrCheckBool(result, func, args)
+    # return a tuple (hProcess, hThread, dwProcessID, dwThreadID)
+    pi = args[9]
+    return (
+        AutoHANDLE(pi.hProcess),
+        AutoHANDLE(pi.hThread),
+        pi.dwProcessID,
+        pi.dwThreadID,
+    )
+
+
+CreateProcess = CreateProcessProto(
+    ("CreateProcessW", windll.kernel32), CreateProcessFlags
+)
+CreateProcess.errcheck = ErrCheckCreateProcess
+
+# flags for CreateProcess
+CREATE_BREAKAWAY_FROM_JOB = 0x01000000
+CREATE_DEFAULT_ERROR_MODE = 0x04000000
+CREATE_NEW_CONSOLE = 0x00000010
+CREATE_NEW_PROCESS_GROUP = 0x00000200
+CREATE_NO_WINDOW = 0x08000000
+CREATE_SUSPENDED = 0x00000004
+CREATE_UNICODE_ENVIRONMENT = 0x00000400
+
+# Flags for IOCompletion ports (some of these would probably be defined if
+# we used the win32 extensions for python, but we don't want to do that if we
+# can help it.
+INVALID_HANDLE_VALUE = HANDLE(-1)  # From winbase.h
+
+# Self Defined Constants for IOPort <--> Job Object communication
+COMPKEY_TERMINATE = c_ulong(0)
+COMPKEY_JOBOBJECT = c_ulong(1)
+
+# flags for job limit information
+# see http://msdn.microsoft.com/en-us/library/ms684147%28VS.85%29.aspx
+JOB_OBJECT_LIMIT_BREAKAWAY_OK = 0x00000800
+JOB_OBJECT_LIMIT_SILENT_BREAKAWAY_OK = 0x00001000
+JOB_OBJECT_LIMIT_KILL_ON_JOB_CLOSE = 0x00002000
+
+# Flags for Job Object Completion Port Message IDs from winnt.h
+# See also: http://msdn.microsoft.com/en-us/library/ms684141%28v=vs.85%29.aspx
+JOB_OBJECT_MSG_END_OF_JOB_TIME = 1
+JOB_OBJECT_MSG_END_OF_PROCESS_TIME = 2
+JOB_OBJECT_MSG_ACTIVE_PROCESS_LIMIT = 3
+JOB_OBJECT_MSG_ACTIVE_PROCESS_ZERO = 4
+JOB_OBJECT_MSG_NEW_PROCESS = 6
+JOB_OBJECT_MSG_EXIT_PROCESS = 7
+JOB_OBJECT_MSG_ABNORMAL_EXIT_PROCESS = 8
+JOB_OBJECT_MSG_PROCESS_MEMORY_LIMIT = 9
+JOB_OBJECT_MSG_JOB_MEMORY_LIMIT = 10
+
+# See winbase.h
+DEBUG_ONLY_THIS_PROCESS = 0x00000002
+DEBUG_PROCESS = 0x00000001
+DETACHED_PROCESS = 0x00000008
+
+# OpenProcess -
+# https://msdn.microsoft.com/en-us/library/windows/desktop/ms684320(v=vs.85).aspx
+PROCESS_QUERY_INFORMATION = 0x0400
+PROCESS_VM_READ = 0x0010
+
+OpenProcessProto = WINFUNCTYPE(
+    HANDLE,  # Return type
+    DWORD,  # dwDesiredAccess
+    BOOL,  # bInheritHandle
+    DWORD,  # dwProcessId
+)
+
+OpenProcessFlags = (
+    (1, "dwDesiredAccess", 0),
+    (1, "bInheritHandle", False),
+    (1, "dwProcessId", 0),
+)
+
+
+def ErrCheckOpenProcess(result, func, args):
+    ErrCheckBool(result, func, args)
+
+    return AutoHANDLE(result)
+
+
+OpenProcess = OpenProcessProto(("OpenProcess", windll.kernel32), OpenProcessFlags)
+OpenProcess.errcheck = ErrCheckOpenProcess
+
+# GetQueuedCompletionPortStatus -
+# http://msdn.microsoft.com/en-us/library/aa364986%28v=vs.85%29.aspx
+GetQueuedCompletionStatusProto = WINFUNCTYPE(
+    BOOL,  # Return Type
+    HANDLE,  # Completion Port
+    LPDWORD,  # Msg ID
+    LPULONG,  # Completion Key
+    # PID Returned from the call (may be null)
+    LPULONG,
+    DWORD,
+)  # milliseconds to wait
+GetQueuedCompletionStatusFlags = (
+    (1, "CompletionPort", INVALID_HANDLE_VALUE),
+    (1, "lpNumberOfBytes", None),
+    (1, "lpCompletionKey", None),
+    (1, "lpPID", None),
+    (1, "dwMilliseconds", 0),
+)
+GetQueuedCompletionStatus = GetQueuedCompletionStatusProto(
+    ("GetQueuedCompletionStatus", windll.kernel32), GetQueuedCompletionStatusFlags
+)
+
+# CreateIOCompletionPort
+# Note that the completion key is just a number, not a pointer.
+CreateIoCompletionPortProto = WINFUNCTYPE(
+    HANDLE,  # Return Type
+    HANDLE,  # File Handle
+    HANDLE,  # Existing Completion Port
+    c_ulong,  # Completion Key
+    DWORD,
+)  # Number of Threads
+
+CreateIoCompletionPortFlags = (
+    (1, "FileHandle", INVALID_HANDLE_VALUE),
+    (1, "ExistingCompletionPort", 0),
+    (1, "CompletionKey", c_ulong(0)),
+    (1, "NumberOfConcurrentThreads", 0),
+)
+CreateIoCompletionPort = CreateIoCompletionPortProto(
+    ("CreateIoCompletionPort", windll.kernel32), CreateIoCompletionPortFlags
+)
+CreateIoCompletionPort.errcheck = ErrCheckHandle
+
+# SetInformationJobObject
+SetInformationJobObjectProto = WINFUNCTYPE(
+    BOOL,  # Return Type
+    HANDLE,  # Job Handle
+    DWORD,  # Type of Class next param is
+    LPVOID,  # Job Object Class
+    DWORD,
+)  # Job Object Class Length
+
+SetInformationJobObjectProtoFlags = (
+    (1, "hJob", None),
+    (1, "JobObjectInfoClass", None),
+    (1, "lpJobObjectInfo", None),
+    (1, "cbJobObjectInfoLength", 0),
+)
+SetInformationJobObject = SetInformationJobObjectProto(
+    ("SetInformationJobObject", windll.kernel32), SetInformationJobObjectProtoFlags
+)
+SetInformationJobObject.errcheck = ErrCheckBool
+
+# CreateJobObject()
+CreateJobObjectProto = WINFUNCTYPE(
+    HANDLE, LPVOID, LPCWSTR  # Return type  # lpJobAttributes  # lpName
+)
+
+CreateJobObjectFlags = ((1, "lpJobAttributes", None), (1, "lpName", None))
+
+CreateJobObject = CreateJobObjectProto(
+    ("CreateJobObjectW", windll.kernel32), CreateJobObjectFlags
+)
+CreateJobObject.errcheck = ErrCheckHandle
+
+# AssignProcessToJobObject()
+
+AssignProcessToJobObjectProto = WINFUNCTYPE(
+    BOOL, HANDLE, HANDLE  # Return type  # hJob  # hProcess
+)
+AssignProcessToJobObjectFlags = ((1, "hJob"), (1, "hProcess"))
+AssignProcessToJobObject = AssignProcessToJobObjectProto(
+    ("AssignProcessToJobObject", windll.kernel32), AssignProcessToJobObjectFlags
+)
+AssignProcessToJobObject.errcheck = ErrCheckBool
+
+# GetCurrentProcess()
+# because os.getPid() is way too easy
+GetCurrentProcessProto = WINFUNCTYPE(HANDLE)  # Return type
+GetCurrentProcessFlags = ()
+GetCurrentProcess = GetCurrentProcessProto(
+    ("GetCurrentProcess", windll.kernel32), GetCurrentProcessFlags
+)
+GetCurrentProcess.errcheck = ErrCheckHandle
+
+# IsProcessInJob()
+try:
+    IsProcessInJobProto = WINFUNCTYPE(
+        BOOL,  # Return type
+        HANDLE,  # Process Handle
+        HANDLE,  # Job Handle
+        LPBOOL,  # Result
+    )
+    IsProcessInJobFlags = (
+        (1, "ProcessHandle"),
+        (1, "JobHandle", HANDLE(0)),
+        (2, "Result"),
+    )
+    IsProcessInJob = IsProcessInJobProto(
+        ("IsProcessInJob", windll.kernel32), IsProcessInJobFlags
+    )
+    IsProcessInJob.errcheck = ErrCheckBool
+except AttributeError:
+    # windows 2k doesn't have this API
+    def IsProcessInJob(process):
+        return False
+
+
+# ResumeThread()
+
+
+def ErrCheckResumeThread(result, func, args):
+    if result == -1:
+        raise WinError()
+
+    return args
+
+
+ResumeThreadProto = WINFUNCTYPE(DWORD, HANDLE)  # Return type  # hThread
+ResumeThreadFlags = ((1, "hThread"),)
+ResumeThread = ResumeThreadProto(("ResumeThread", windll.kernel32), ResumeThreadFlags)
+ResumeThread.errcheck = ErrCheckResumeThread
+
+# TerminateProcess()
+
+TerminateProcessProto = WINFUNCTYPE(
+    BOOL, HANDLE, UINT  # Return type  # hProcess  # uExitCode
+)
+TerminateProcessFlags = ((1, "hProcess"), (1, "uExitCode", 127))
+TerminateProcess = TerminateProcessProto(
+    ("TerminateProcess", windll.kernel32), TerminateProcessFlags
+)
+TerminateProcess.errcheck = ErrCheckBool
+
+# TerminateJobObject()
+
+TerminateJobObjectProto = WINFUNCTYPE(
+    BOOL, HANDLE, UINT  # Return type  # hJob  # uExitCode
+)
+TerminateJobObjectFlags = ((1, "hJob"), (1, "uExitCode", 127))
+TerminateJobObject = TerminateJobObjectProto(
+    ("TerminateJobObject", windll.kernel32), TerminateJobObjectFlags
+)
+TerminateJobObject.errcheck = ErrCheckBool
+
+# WaitForSingleObject()
+
+WaitForSingleObjectProto = WINFUNCTYPE(
+    DWORD,
+    HANDLE,
+    DWORD,  # Return type  # hHandle  # dwMilliseconds
+)
+WaitForSingleObjectFlags = ((1, "hHandle"), (1, "dwMilliseconds", -1))
+WaitForSingleObject = WaitForSingleObjectProto(
+    ("WaitForSingleObject", windll.kernel32), WaitForSingleObjectFlags
+)
+
+# http://msdn.microsoft.com/en-us/library/ms681381%28v=vs.85%29.aspx
+INFINITE = -1
+WAIT_TIMEOUT = 0x0102
+WAIT_OBJECT_0 = 0x0
+WAIT_ABANDONED = 0x0080
+
+# http://msdn.microsoft.com/en-us/library/ms683189%28VS.85%29.aspx
+STILL_ACTIVE = 259
+
+# Used when we terminate a process.
+ERROR_CONTROL_C_EXIT = 0x23C
+ERROR_CONTROL_C_EXIT_DECIMAL = 3221225786
+
+# GetExitCodeProcess()
+
+GetExitCodeProcessProto = WINFUNCTYPE(
+    BOOL,
+    HANDLE,
+    LPDWORD,  # Return type  # hProcess  # lpExitCode
+)
+GetExitCodeProcessFlags = ((1, "hProcess"), (2, "lpExitCode"))
+GetExitCodeProcess = GetExitCodeProcessProto(
+    ("GetExitCodeProcess", windll.kernel32), GetExitCodeProcessFlags
+)
+GetExitCodeProcess.errcheck = ErrCheckBool
+
+
+def CanCreateJobObject():
+    currentProc = GetCurrentProcess()
+    if IsProcessInJob(currentProc):
+        jobinfo = QueryInformationJobObject(
+            HANDLE(0), "JobObjectExtendedLimitInformation"
+        )
+        limitflags = jobinfo["BasicLimitInformation"]["LimitFlags"]
+        return bool(limitflags & JOB_OBJECT_LIMIT_BREAKAWAY_OK) or bool(
+            limitflags & JOB_OBJECT_LIMIT_SILENT_BREAKAWAY_OK
+        )
+    else:
+        return True
+
+
+# testing functions
+
+
+def parent():
+    print("Starting parent")
+    currentProc = GetCurrentProcess()
+    if IsProcessInJob(currentProc):
+        print("You should not be in a job object to test", file=sys.stderr)
+        sys.exit(1)
+    assert CanCreateJobObject()
+    print("File: %s" % __file__)
+    command = [sys.executable, __file__, "-child"]
+    print("Running command: %s" % command)
+    process = subprocess.Popen(command)
+    process.kill()
+    code = process.returncode
+    print("Child code: %s" % code)
+    assert code == 127
+
+
+def child():
+    print("Starting child")
+    currentProc = GetCurrentProcess()
+    injob = IsProcessInJob(currentProc)
+    print("Is in a job?: %s" % injob)
+    can_create = CanCreateJobObject()
+    print("Can create job?: %s" % can_create)
+    process = subprocess.Popen("c:\\windows\\notepad.exe")
+    assert process._job
+    jobinfo = QueryInformationJobObject(
+        process._job, "JobObjectExtendedLimitInformation"
+    )
+    print("Job info: %s" % jobinfo)
+    limitflags = jobinfo["BasicLimitInformation"]["LimitFlags"]
+    print("LimitFlags: %s" % limitflags)
+    process.kill()
diff --git a/testing/mozbase/mozprocess/setup.cfg b/testing/mozbase/mozprocess/setup.cfg
new file mode 100644
index 0000000000..2a9acf13da
--- /dev/null
+++ b/testing/mozbase/mozprocess/setup.cfg
@@ -0,0 +1,2 @@
+[bdist_wheel]
+universal = 1
diff --git a/testing/mozbase/mozprocess/setup.py b/testing/mozbase/mozprocess/setup.py
new file mode 100644
index 0000000000..0c97f4c7de
--- /dev/null
+++ b/testing/mozbase/mozprocess/setup.py
@@ -0,0 +1,36 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this file,
+# You can obtain one at http://mozilla.org/MPL/2.0/.
+
+from setuptools import setup
+
+PACKAGE_VERSION = "1.3.0"
+
+setup(
+    name="mozprocess",
+    version=PACKAGE_VERSION,
+    description="Mozilla-authored process handling",
+    long_description="see https://firefox-source-docs.mozilla.org/mozbase/index.html",
+    classifiers=[
+        "Environment :: Console",
+        "Intended Audience :: Developers",
+        "License :: OSI Approved :: Mozilla Public License 2.0 (MPL 2.0)",
+        "Natural Language :: English",
+        "Operating System :: OS Independent",
+        "Programming Language :: Python :: 2.7",
+        "Programming Language :: Python :: 3.5",
+        "Topic :: Software Development :: Libraries :: Python Modules",
+    ],
+    keywords="mozilla",
+    author="Mozilla Automation and Tools team",
+    author_email="tools@lists.mozilla.org",
+    url="https://wiki.mozilla.org/Auto-tools/Projects/Mozbase",
+    license="MPL 2.0",
+    packages=["mozprocess"],
+    include_package_data=True,
+    zip_safe=False,
+    install_requires=["mozinfo"],
+    entry_points="""
+      # -*- Entry points: -*-
+      """,
+)
diff --git a/testing/mozbase/mozprocess/tests/manifest.ini b/testing/mozbase/mozprocess/tests/manifest.ini
new file mode 100644
index 0000000000..c63c4684c5
--- /dev/null
+++ b/testing/mozbase/mozprocess/tests/manifest.ini
@@ -0,0 +1,12 @@
+[DEFAULT]
+subsuite = mozbase
+[test_detached.py]
+skip-if = os == 'win'  # Bug 1493796
+[test_kill.py]
+[test_misc.py]
+[test_pid.py]
+[test_poll.py]
+[test_wait.py]
+[test_output.py]
+[test_params.py]
+[test_process_reader.py]
diff --git a/testing/mozbase/mozprocess/tests/process_normal_broad.ini b/testing/mozbase/mozprocess/tests/process_normal_broad.ini
new file mode 100644
index 0000000000..28109cb31e
--- /dev/null
+++ b/testing/mozbase/mozprocess/tests/process_normal_broad.ini
@@ -0,0 +1,30 @@
+; Generate a Broad Process Tree
+; This generates a Tree of the form:
+;
+;   main
+;    \_ c1
+;    |   \_ c2
+;    |   \_ c2
+;    |   \_ c2
+;    |   \_ c2
+;    |   \_ c2
+;    |
+;    \_ c1
+;    |   \_ c2
+;    |   \_ c2
+;    |   \_ c2
+;    |   \_ c2
+;    |   \_ c2
+;    |
+;    \_ ... 23 more times
+
+[main]
+children=25*c1
+maxtime=10
+
+[c1]
+children=5*c2
+maxtime=10
+
+[c2]
+maxtime=5
diff --git a/testing/mozbase/mozprocess/tests/process_normal_deep.ini b/testing/mozbase/mozprocess/tests/process_normal_deep.ini
new file mode 100644
index 0000000000..ef9809f6ab
--- /dev/null
+++ b/testing/mozbase/mozprocess/tests/process_normal_deep.ini
@@ -0,0 +1,65 @@
+; Deep Process Tree
+; Should generate a process tree of the form:
+;
+;	main
+;	 \_ c2
+;	 |   \_ c5
+;	 |   |   \_ c6
+;	 |   |       \_ c7
+;	 |   |           \_ c8
+;	 |   |               \_ c1
+;	 |   |                   \_ c4
+;	 |   \_ c5
+;	 |       \_ c6
+;	 |           \_ c7
+;	 |               \_ c8
+;	 |                   \_ c1
+;	 |                       \_ c4
+;	 \_ c2
+;	 |   \_ c5
+;	 |   |   \_ c6
+;	 |   |       \_ c7
+;	 |   |           \_ c8
+;	 |   |               \_ c1
+;	 |   |                   \_ c4
+;	 |   \_ c5
+;	 |       \_ c6
+;	 |           \_ c7
+;	 |               \_ c8
+;	 |                   \_ c1
+;	 |                       \_ c4
+;	 \_ c1
+;	 |   \_ c4
+;	 \_ c1
+;	     \_ c4
+
+[main]
+children=2*c1, 2*c2
+maxtime=20
+
+[c1]
+children=c4
+maxtime=20
+
+[c2]
+children=2*c5
+maxtime=20
+
+[c4]
+maxtime=20
+
+[c5]
+children=c6
+maxtime=20
+
+[c6]
+children=c7
+maxtime=20
+
+[c7]
+children=c8
+maxtime=20
+
+[c8]
+children=c1
+maxtime=20
diff --git a/testing/mozbase/mozprocess/tests/process_normal_finish.ini b/testing/mozbase/mozprocess/tests/process_normal_finish.ini
new file mode 100644
index 0000000000..4519c70830
--- /dev/null
+++ b/testing/mozbase/mozprocess/tests/process_normal_finish.ini
@@ -0,0 +1,17 @@
+; Generates a normal process tree
+; Tree is of the form:
+; main
+;  \_ c1
+;  \_ c2
+
+[main]
+children=c1,c2
+maxtime=10
+
+[c1]
+children=c2
+maxtime=5
+
+[c2]
+maxtime=5
+
diff --git a/testing/mozbase/mozprocess/tests/process_normal_finish_no_process_group.ini b/testing/mozbase/mozprocess/tests/process_normal_finish_no_process_group.ini
new file mode 100644
index 0000000000..2b0f1f9a4f
--- /dev/null
+++ b/testing/mozbase/mozprocess/tests/process_normal_finish_no_process_group.ini
@@ -0,0 +1,2 @@
+[main]
+maxtime=10
diff --git a/testing/mozbase/mozprocess/tests/process_waittimeout.ini b/testing/mozbase/mozprocess/tests/process_waittimeout.ini
new file mode 100644
index 0000000000..5800267d18
--- /dev/null
+++ b/testing/mozbase/mozprocess/tests/process_waittimeout.ini
@@ -0,0 +1,16 @@
+; Generates a normal process tree
+; Tree is of the form:
+; main
+;  \_ c1
+;  \_ c2
+
+[main]
+children=2*c1
+maxtime=300
+
+[c1]
+children=2*c2
+maxtime=300
+
+[c2]
+maxtime=300
diff --git a/testing/mozbase/mozprocess/tests/process_waittimeout_10s.ini b/testing/mozbase/mozprocess/tests/process_waittimeout_10s.ini
new file mode 100644
index 0000000000..abf8d6a4ef
--- /dev/null
+++ b/testing/mozbase/mozprocess/tests/process_waittimeout_10s.ini
@@ -0,0 +1,16 @@
+; Generate a normal process tree
+; Tree is of the form:
+; main
+;  \_ c1
+;  \_ c2
+
+[main]
+children=c1
+maxtime=10
+
+[c1]
+children=2*c2
+maxtime=5
+
+[c2]
+maxtime=5
diff --git a/testing/mozbase/mozprocess/tests/proclaunch.py b/testing/mozbase/mozprocess/tests/proclaunch.py
new file mode 100644
index 0000000000..c57e2bb12c
--- /dev/null
+++ b/testing/mozbase/mozprocess/tests/proclaunch.py
@@ -0,0 +1,209 @@
+#!/usr/bin/env python
+
+import argparse
+import collections
+import multiprocessing
+import time
+
+from six.moves import configparser
+
+ProcessNode = collections.namedtuple("ProcessNode", ["maxtime", "children"])
+
+
+class ProcessLauncher(object):
+    """Create and Launch process trees specified by a '.ini' file
+
+    Typical .ini file accepted by this class :
+
+    [main]
+    children=c1, 1*c2, 4*c3
+    maxtime=10
+
+    [c1]
+    children= 2*c2, c3
+    maxtime=20
+
+    [c2]
+    children=3*c3
+    maxtime=5
+
+    [c3]
+    maxtime=3
+
+    This generates a process tree of the form:
+        [main]
+            |---[c1]
+            |     |---[c2]
+            |     |     |---[c3]
+            |     |     |---[c3]
+            |     |     |---[c3]
+            |     |
+            |     |---[c2]
+            |     |     |---[c3]
+            |     |     |---[c3]
+            |     |     |---[c3]
+            |     |
+            |     |---[c3]
+            |
+            |---[c2]
+            |     |---[c3]
+            |     |---[c3]
+            |     |---[c3]
+            |
+            |---[c3]
+            |---[c3]
+            |---[c3]
+
+    Caveat: The section names cannot contain a '*'(asterisk) or a ','(comma)
+    character as these are used as delimiters for parsing.
+    """
+
+    # Unit time for processes in seconds
+    UNIT_TIME = 1
+
+    def __init__(self, manifest, verbose=False):
+        """
+        Parses the manifest and stores the information about the process tree
+        in a format usable by the class.
+
+        Raises IOError if :
+            - The path does not exist
+            - The file cannot be read
+        Raises ConfigParser.*Error if:
+            - Files does not contain section headers
+            - File cannot be parsed because of incorrect specification
+
+        :param manifest: Path to the manifest file that contains the
+        configuration for the process tree to be launched
+        :verbose: Print the process start and end information.
+        Genrates a lot of output. Disabled by default.
+        """
+
+        self.verbose = verbose
+
+        # Children is a dictionary used to store information from the,
+        # Configuration file in a more usable format.
+        # Key : string contain the name of child process
+        # Value : A Named tuple of the form (max_time, (list of child processes of Key))
+        #   Where each child process is a list of type: [count to run, name of child]
+        self.children = {}
+
+        cfgparser = configparser.ConfigParser()
+
+        if not cfgparser.read(manifest):
+            raise IOError("The manifest %s could not be found/opened", manifest)
+
+        sections = cfgparser.sections()
+        for section in sections:
+            # Maxtime is a mandatory option
+            # ConfigParser.NoOptionError is raised if maxtime does not exist
+            if "*" in section or "," in section:
+                raise configparser.ParsingError(
+                    "%s is not a valid section name. "
+                    "Section names cannot contain a '*' or ','." % section
+                )
+            m_time = cfgparser.get(section, "maxtime")
+            try:
+                m_time = int(m_time)
+            except ValueError:
+                raise ValueError(
+                    "Expected maxtime to be an integer, specified %s" % m_time
+                )
+
+            # No children option implies there are no further children
+            # Leaving the children option blank is an error.
+            try:
+                c = cfgparser.get(section, "children")
+                if not c:
+                    # If children is an empty field, assume no children
+                    children = None
+
+                else:
+                    # Tokenize chilren field, ignore empty strings
+                    children = [
+                        [y.strip() for y in x.strip().split("*", 1)]
+                        for x in c.split(",")
+                        if x
+                    ]
+                    try:
+                        for i, child in enumerate(children):
+                            # No multiplicate factor infront of a process implies 1
+                            if len(child) == 1:
+                                children[i] = [1, child[0]]
+                            else:
+                                children[i][0] = int(child[0])
+
+                            if children[i][1] not in sections:
+                                raise configparser.ParsingError(
+                                    "No section corresponding to child %s" % child[1]
+                                )
+                    except ValueError:
+                        raise ValueError(
+                            "Expected process count to be an integer, specified %s"
+                            % child[0]
+                        )
+
+            except configparser.NoOptionError:
+                children = None
+            pn = ProcessNode(maxtime=m_time, children=children)
+            self.children[section] = pn
+
+    def run(self):
+        """
+        This function launches the process tree.
+        """
+        self._run("main", 0)
+
+    def _run(self, proc_name, level):
+        """
+        Runs the process specified by the section-name `proc_name` in the manifest file.
+        Then makes calls to launch the child processes of `proc_name`
+
+        :param proc_name: File name of the manifest as a string.
+        :param level: Depth of the current process in the tree.
+        """
+        if proc_name not in self.children:
+            raise IOError("%s is not a valid process" % proc_name)
+
+        maxtime = self.children[proc_name].maxtime
+        if self.verbose:
+            print(
+                "%sLaunching %s for %d*%d seconds"
+                % (" " * level, proc_name, maxtime, self.UNIT_TIME)
+            )
+
+        while self.children[proc_name].children:
+            child = self.children[proc_name].children.pop()
+
+            count, child_proc = child
+            for i in range(count):
+                p = multiprocessing.Process(
+                    target=self._run, args=(child[1], level + 1)
+                )
+                p.start()
+
+        self._launch(maxtime)
+        if self.verbose:
+            print("%sFinished %s" % (" " * level, proc_name))
+
+    def _launch(self, running_time):
+        """
+        Create and launch a process and idles for the time specified by
+        `running_time`
+
+        :param running_time: Running time of the process in seconds.
+        """
+        elapsed_time = 0
+
+        while elapsed_time < running_time:
+            time.sleep(self.UNIT_TIME)
+            elapsed_time += self.UNIT_TIME
+
+
+if __name__ == "__main__":
+    parser = argparse.ArgumentParser()
+    parser.add_argument("manifest", help="Specify the configuration .ini file")
+    args = parser.parse_args()
+
+    proclaunch = ProcessLauncher(args.manifest)
+    proclaunch.run()
diff --git a/testing/mozbase/mozprocess/tests/proctest.py b/testing/mozbase/mozprocess/tests/proctest.py
new file mode 100644
index 0000000000..d1e7138a1d
--- /dev/null
+++ b/testing/mozbase/mozprocess/tests/proctest.py
@@ -0,0 +1,62 @@
+import os
+import sys
+import unittest
+
+from mozprocess import ProcessHandler
+
+here = os.path.dirname(os.path.abspath(__file__))
+
+
+class ProcTest(unittest.TestCase):
+    @classmethod
+    def setUpClass(cls):
+        cls.proclaunch = os.path.join(here, "proclaunch.py")
+        cls.python = sys.executable
+
+    def determine_status(self, proc, isalive=False, expectedfail=()):
+        """
+        Use to determine if the situation has failed.
+        Parameters:
+            proc -- the processhandler instance
+            isalive -- Use True to indicate we pass if the process exists; however, by default
+                       the test will pass if the process does not exist (isalive == False)
+            expectedfail -- Defaults to [], used to indicate a list of fields
+                            that are expected to fail
+        """
+        returncode = proc.proc.returncode
+        didtimeout = proc.didTimeout
+        detected = ProcessHandler.pid_exists(proc.pid)
+        output = ""
+        # ProcessHandler has output when store_output is set to True in the constructor
+        # (this is the default)
+        if getattr(proc, "output"):
+            output = proc.output
+
+        if "returncode" in expectedfail:
+            self.assertTrue(
+                returncode, "Detected an unexpected return code of: %s" % returncode
+            )
+        elif isalive:
+            self.assertEqual(
+                returncode, None, "Detected not None return code of: %s" % returncode
+            )
+        else:
+            self.assertNotEqual(
+                returncode, None, "Detected unexpected None return code of"
+            )
+
+        if "didtimeout" in expectedfail:
+            self.assertTrue(didtimeout, "Detected that process didn't time out")
+        else:
+            self.assertTrue(not didtimeout, "Detected that process timed out")
+
+        if isalive:
+            self.assertTrue(
+                detected,
+                "Detected process is not running, " "process output: %s" % output,
+            )
+        else:
+            self.assertTrue(
+                not detected,
+                "Detected process is still running, " "process output: %s" % output,
+            )
diff --git a/testing/mozbase/mozprocess/tests/scripts/ignore_sigterm.py b/testing/mozbase/mozprocess/tests/scripts/ignore_sigterm.py
new file mode 100644
index 0000000000..15870d6267
--- /dev/null
+++ b/testing/mozbase/mozprocess/tests/scripts/ignore_sigterm.py
@@ -0,0 +1,13 @@
+import signal
+import time
+
+signal.pthread_sigmask(signal.SIG_SETMASK, {signal.SIGTERM})
+
+
+def main():
+    while True:
+        time.sleep(1)
+
+
+if __name__ == "__main__":
+    main()
diff --git a/testing/mozbase/mozprocess/tests/scripts/infinite_loop.py b/testing/mozbase/mozprocess/tests/scripts/infinite_loop.py
new file mode 100644
index 0000000000..9af60b3811
--- /dev/null
+++ b/testing/mozbase/mozprocess/tests/scripts/infinite_loop.py
@@ -0,0 +1,18 @@
+import signal
+import sys
+import threading
+import time
+
+if "deadlock" in sys.argv:
+    lock = threading.Lock()
+
+    def trap(sig, frame):
+        lock.acquire()
+
+    # get the lock once
+    lock.acquire()
+    # and take it again on SIGTERM signal: deadlock.
+    signal.signal(signal.SIGTERM, trap)
+
+while 1:
+    time.sleep(1)
diff --git a/testing/mozbase/mozprocess/tests/scripts/proccountfive.py b/testing/mozbase/mozprocess/tests/scripts/proccountfive.py
new file mode 100644
index 0000000000..39fabee508
--- /dev/null
+++ b/testing/mozbase/mozprocess/tests/scripts/proccountfive.py
@@ -0,0 +1,2 @@
+for i in range(0, 5):
+    print(i)
diff --git a/testing/mozbase/mozprocess/tests/scripts/procnonewline.py b/testing/mozbase/mozprocess/tests/scripts/procnonewline.py
new file mode 100644
index 0000000000..341a94be0a
--- /dev/null
+++ b/testing/mozbase/mozprocess/tests/scripts/procnonewline.py
@@ -0,0 +1,4 @@
+import sys
+
+print("this is a newline")
+sys.stdout.write("this has NO newline")
diff --git a/testing/mozbase/mozprocess/tests/test_detached.py b/testing/mozbase/mozprocess/tests/test_detached.py
new file mode 100644
index 0000000000..bc310fa3db
--- /dev/null
+++ b/testing/mozbase/mozprocess/tests/test_detached.py
@@ -0,0 +1,62 @@
+#!/usr/bin/env python
+
+import os
+
+import mozunit
+import proctest
+from mozprocess import processhandler
+
+here = os.path.dirname(os.path.abspath(__file__))
+
+
+class ProcTestDetached(proctest.ProcTest):
+    """Class to test for detached processes."""
+
+    def test_check_for_detached_before_run(self):
+        """Process is not started yet when checked for detached."""
+        p = processhandler.ProcessHandler(
+            [self.python, self.proclaunch, "process_normal_finish.ini"], cwd=here
+        )
+
+        with self.assertRaises(RuntimeError):
+            p.check_for_detached(1234)
+
+    def test_check_for_detached_while_running_with_current_pid(self):
+        """Process is started, and check for detached with original pid."""
+        p = processhandler.ProcessHandler(
+            [self.python, self.proclaunch, "process_normal_finish.ini"], cwd=here
+        )
+        p.run()
+
+        orig_pid = p.pid
+        p.check_for_detached(p.pid)
+
+        self.assertEqual(p.pid, orig_pid)
+        self.assertIsNone(p.proc.detached_pid)
+
+        self.determine_status(p, True)
+        p.kill()
+
+    def test_check_for_detached_after_fork(self):
+        """Process is started, and check for detached with new pid."""
+        pass
+
+    def test_check_for_detached_after_kill(self):
+        """Process is killed before checking for detached pid."""
+        p = processhandler.ProcessHandler(
+            [self.python, self.proclaunch, "process_normal_finish.ini"], cwd=here
+        )
+        p.run()
+        p.kill()
+
+        orig_pid = p.pid
+        p.check_for_detached(p.pid)
+
+        self.assertEqual(p.pid, orig_pid)
+        self.assertIsNone(p.proc.detached_pid)
+
+        self.determine_status(p)
+
+
+if __name__ == "__main__":
+    mozunit.main()
diff --git a/testing/mozbase/mozprocess/tests/test_kill.py b/testing/mozbase/mozprocess/tests/test_kill.py
new file mode 100644
index 0000000000..bba19f6fe8
--- /dev/null
+++ b/testing/mozbase/mozprocess/tests/test_kill.py
@@ -0,0 +1,144 @@
+#!/usr/bin/env python
+
+import os
+import signal
+import sys
+import time
+import unittest
+
+import mozunit
+import proctest
+from mozprocess import processhandler
+
+here = os.path.dirname(os.path.abspath(__file__))
+
+
+class ProcTestKill(proctest.ProcTest):
+    """Class to test various process tree killing scenatios"""
+
+    def test_kill_before_run(self):
+        """Process is not started, and kill() is called"""
+
+        p = processhandler.ProcessHandler([self.python, "-V"])
+        self.assertRaises(RuntimeError, p.kill)
+
+    def test_process_kill(self):
+        """Process is started, we kill it"""
+
+        p = processhandler.ProcessHandler(
+            [self.python, self.proclaunch, "process_normal_finish.ini"], cwd=here
+        )
+        p.run()
+        p.kill()
+
+        self.determine_status(p, expectedfail=("returncode",))
+
+    def test_process_kill_deep(self):
+        """Process is started, we kill it, we use a deep process tree"""
+
+        p = processhandler.ProcessHandler(
+            [self.python, self.proclaunch, "process_normal_deep.ini"], cwd=here
+        )
+        p.run()
+        p.kill()
+
+        self.determine_status(p, expectedfail=("returncode",))
+
+    def test_process_kill_deep_wait(self):
+        """Process is started, we use a deep process tree, we let it spawn
+        for a bit, we kill it"""
+
+        myenv = None
+        # On macosx1014, subprocess fails to find `six` when run with python3.
+        # This ensures that subprocess first looks to sys.path to find `six`.
+        # See https://bugzilla.mozilla.org/show_bug.cgi?id=1562083
+        if sys.platform == "darwin" and sys.version_info[0] > 2:
+            myenv = os.environ.copy()
+            myenv["PYTHONPATH"] = ":".join(sys.path)
+
+        p = processhandler.ProcessHandler(
+            [self.python, self.proclaunch, "process_normal_deep.ini"],
+            cwd=here,
+            env=myenv,
+        )
+        p.run()
+        # Let the tree spawn a bit, before attempting to kill
+        time.sleep(3)
+        p.kill()
+
+        self.determine_status(p, expectedfail=("returncode",))
+
+    def test_process_kill_broad(self):
+        """Process is started, we kill it, we use a broad process tree"""
+
+        p = processhandler.ProcessHandler(
+            [self.python, self.proclaunch, "process_normal_broad.ini"], cwd=here
+        )
+        p.run()
+        p.kill()
+
+        self.determine_status(p, expectedfail=("returncode",))
+
+    def test_process_kill_broad_delayed(self):
+        """Process is started, we use a broad process tree, we let it spawn
+        for a bit, we kill it"""
+
+        myenv = None
+        # On macosx1014, subprocess fails to find `six` when run with python3.
+        # This ensures that subprocess first looks to sys.path to find `six`.
+        # See https://bugzilla.mozilla.org/show_bug.cgi?id=1562083
+        if sys.platform == "darwin" and sys.version_info[0] > 2:
+            myenv = os.environ.copy()
+            myenv["PYTHONPATH"] = ":".join(sys.path)
+
+        p = processhandler.ProcessHandler(
+            [self.python, self.proclaunch, "process_normal_broad.ini"],
+            cwd=here,
+            env=myenv,
+        )
+        p.run()
+        # Let the tree spawn a bit, before attempting to kill
+        time.sleep(3)
+        p.kill()
+
+        self.determine_status(p, expectedfail=("returncode",))
+
+    @unittest.skipUnless(processhandler.isPosix, "posix only")
+    def test_process_kill_with_sigterm(self):
+        script = os.path.join(here, "scripts", "infinite_loop.py")
+        p = processhandler.ProcessHandler([self.python, script])
+
+        p.run()
+        p.kill()
+
+        self.assertEqual(p.proc.returncode, -signal.SIGTERM)
+
+    @unittest.skipUnless(processhandler.isPosix, "posix only")
+    def test_process_kill_with_sigint_if_needed(self):
+        script = os.path.join(here, "scripts", "infinite_loop.py")
+        p = processhandler.ProcessHandler([self.python, script, "deadlock"])
+
+        p.run()
+        time.sleep(1)
+        p.kill()
+
+        self.assertEqual(p.proc.returncode, -signal.SIGKILL)
+
+    @unittest.skipUnless(processhandler.isPosix, "posix only")
+    def test_process_kill_with_timeout(self):
+        script = os.path.join(here, "scripts", "ignore_sigterm.py")
+        p = processhandler.ProcessHandler([self.python, script])
+
+        p.run()
+        time.sleep(1)
+        t0 = time.time()
+        p.kill(sig=signal.SIGTERM, timeout=2)
+        self.assertEqual(p.proc.returncode, None)
+        self.assertGreaterEqual(time.time(), t0 + 2)
+
+        p.kill(sig=signal.SIGKILL)
+        self.assertEqual(p.proc.returncode, -signal.SIGKILL)
+
+
+if __name__ == "__main__":
+    mozunit.main()
diff --git a/testing/mozbase/mozprocess/tests/test_misc.py b/testing/mozbase/mozprocess/tests/test_misc.py
new file mode 100644
index 0000000000..a4908fe203
--- /dev/null
+++ b/testing/mozbase/mozprocess/tests/test_misc.py
@@ -0,0 +1,63 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+import os
+import sys
+
+import mozunit
+import proctest
+from mozprocess import processhandler
+
+here = os.path.dirname(os.path.abspath(__file__))
+
+
+class ProcTestMisc(proctest.ProcTest):
+    """Class to test misc operations"""
+
+    def test_process_timeout_no_kill(self):
+        """Process is started, runs but we time out waiting on it
+        to complete. Process should not be killed.
+        """
+        p = None
+
+        def timeout_handler():
+            self.assertEqual(p.proc.poll(), None)
+            p.kill()
+
+        myenv = None
+        # On macosx1014, subprocess fails to find `six` when run with python3.
+        # This ensures that subprocess first looks to sys.path to find `six`.
+        # See https://bugzilla.mozilla.org/show_bug.cgi?id=1562083
+        if sys.platform == "darwin" and sys.version_info[0] > 2:
+            myenv = os.environ.copy()
+            myenv["PYTHONPATH"] = ":".join(sys.path)
+
+        p = processhandler.ProcessHandler(
+            [self.python, self.proclaunch, "process_waittimeout.ini"],
+            cwd=here,
+            env=myenv,
+            onTimeout=(timeout_handler,),
+            kill_on_timeout=False,
+        )
+        p.run(timeout=1)
+        p.wait()
+        self.assertTrue(p.didTimeout)
+
+        self.determine_status(p, False, ["returncode", "didtimeout"])
+
+    def test_unicode_in_environment(self):
+        env = {
+            "FOOBAR": "ʘ",
+        }
+        p = processhandler.ProcessHandler(
+            [self.python, self.proclaunch, "process_normal_finish.ini"],
+            cwd=here,
+            env=env,
+        )
+        # passes if no exceptions are raised
+        p.run()
+        p.wait()
+
+
+if __name__ == "__main__":
+    mozunit.main()
diff --git a/testing/mozbase/mozprocess/tests/test_output.py b/testing/mozbase/mozprocess/tests/test_output.py
new file mode 100644
index 0000000000..fb1551eaf4
--- /dev/null
+++ b/testing/mozbase/mozprocess/tests/test_output.py
@@ -0,0 +1,76 @@
+#!/usr/bin/env python
+
+import io
+import os
+
+import mozunit
+import proctest
+from mozprocess import processhandler
+
+here = os.path.dirname(os.path.abspath(__file__))
+
+
+class ProcTestOutput(proctest.ProcTest):
+    """Class to test operations related to output handling"""
+
+    def test_process_output_twice(self):
+        """
+        Process is started, then processOutput is called a second time explicitly
+        """
+        p = processhandler.ProcessHandler(
+            [self.python, self.proclaunch, "process_waittimeout_10s.ini"], cwd=here
+        )
+
+        p.run()
+        p.processOutput(timeout=5)
+        p.wait()
+
+        self.determine_status(p, False, ())
+
+    def test_process_output_nonewline(self):
+        """
+        Process is started, outputs data with no newline
+        """
+        p = processhandler.ProcessHandler(
+            [self.python, os.path.join("scripts", "procnonewline.py")], cwd=here
+        )
+
+        p.run()
+        p.processOutput(timeout=5)
+        p.wait()
+
+        self.determine_status(p, False, ())
+
+    def test_stream_process_output(self):
+        """
+        Process output stream does not buffer
+        """
+        expected = "\n".join([str(n) for n in range(0, 10)])
+
+        stream = io.BytesIO()
+        buf = io.BufferedRandom(stream)
+
+        p = processhandler.ProcessHandler(
+            [self.python, os.path.join("scripts", "proccountfive.py")],
+            cwd=here,
+            stream=buf,
+        )
+
+        p.run()
+        p.wait()
+        for i in range(5, 10):
+            stream.write(str(i).encode("utf8") + "\n".encode("utf8"))
+
+        buf.flush()
+        self.assertEqual(stream.getvalue().strip().decode("utf8"), expected)
+
+        # make sure mozprocess doesn't close the stream
+        # since mozprocess didn't create it
+        self.assertFalse(buf.closed)
+        buf.close()
+
+        self.determine_status(p, False, ())
+
+
+if __name__ == "__main__":
+    mozunit.main()
diff --git a/testing/mozbase/mozprocess/tests/test_params.py b/testing/mozbase/mozprocess/tests/test_params.py
new file mode 100644
index 0000000000..4a8e98affd
--- /dev/null
+++ b/testing/mozbase/mozprocess/tests/test_params.py
@@ -0,0 +1,94 @@
+#!/usr/bin/env python
+
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this file,
+# You can obtain one at http://mozilla.org/MPL/2.0/.
+
+import unittest
+
+import mozunit
+from mozprocess import processhandler
+
+
+class ParamTests(unittest.TestCase):
+    def test_process_outputline_handler(self):
+        """Parameter processOutputLine is accepted with a single function"""
+
+        def output(line):
+            print("output " + str(line))
+
+        err = None
+        try:
+            processhandler.ProcessHandler(["ls", "-l"], processOutputLine=output)
+        except (TypeError, AttributeError) as e:
+            err = e
+        self.assertFalse(err)
+
+    def test_process_outputline_handler_list(self):
+        """Parameter processOutputLine is accepted with a list of functions"""
+
+        def output(line):
+            print("output " + str(line))
+
+        err = None
+        try:
+            processhandler.ProcessHandler(["ls", "-l"], processOutputLine=[output])
+        except (TypeError, AttributeError) as e:
+            err = e
+        self.assertFalse(err)
+
+    def test_process_ontimeout_handler(self):
+        """Parameter onTimeout is accepted with a single function"""
+
+        def timeout():
+            print("timeout!")
+
+        err = None
+        try:
+            processhandler.ProcessHandler(["sleep", "2"], onTimeout=timeout)
+        except (TypeError, AttributeError) as e:
+            err = e
+        self.assertFalse(err)
+
+    def test_process_ontimeout_handler_list(self):
+        """Parameter onTimeout is accepted with a list of functions"""
+
+        def timeout():
+            print("timeout!")
+
+        err = None
+        try:
+            processhandler.ProcessHandler(["sleep", "2"], onTimeout=[timeout])
+        except (TypeError, AttributeError) as e:
+            err = e
+        self.assertFalse(err)
+
+    def test_process_onfinish_handler(self):
+        """Parameter onFinish is accepted with a single function"""
+
+        def finish():
+            print("finished!")
+
+        err = None
+        try:
+            processhandler.ProcessHandler(["sleep", "1"], onFinish=finish)
+        except (TypeError, AttributeError) as e:
+            err = e
+        self.assertFalse(err)
+
+    def test_process_onfinish_handler_list(self):
+        """Parameter onFinish is accepted with a list of functions"""
+
+        def finish():
+            print("finished!")
+
+        err = None
+        try:
+            processhandler.ProcessHandler(["sleep", "1"], onFinish=[finish])
+        except (TypeError, AttributeError) as e:
+            err = e
+        self.assertFalse(err)
+
+
+if __name__ == "__main__":
+    mozunit.main()
diff --git a/testing/mozbase/mozprocess/tests/test_pid.py b/testing/mozbase/mozprocess/tests/test_pid.py
new file mode 100644
index 0000000000..ddc352db13
--- /dev/null
+++ b/testing/mozbase/mozprocess/tests/test_pid.py
@@ -0,0 +1,46 @@
+#!/usr/bin/env python
+
+import os
+
+import mozunit
+import proctest
+from mozprocess import processhandler
+
+here = os.path.dirname(os.path.abspath(__file__))
+
+
+class ProcTestPid(proctest.ProcTest):
+    """Class to test process pid."""
+
+    def test_pid_before_run(self):
+        """Process is not started, and pid is checked."""
+        p = processhandler.ProcessHandler([self.python])
+        with self.assertRaises(RuntimeError):
+            p.pid
+
+    def test_pid_while_running(self):
+        """Process is started, and pid is checked."""
+        p = processhandler.ProcessHandler(
+            [self.python, self.proclaunch, "process_normal_finish.ini"], cwd=here
+        )
+        p.run()
+
+        self.assertIsNotNone(p.pid)
+
+        self.determine_status(p, True)
+        p.kill()
+
+    def test_pid_after_kill(self):
+        """Process is killed, and pid is checked."""
+        p = processhandler.ProcessHandler(
+            [self.python, self.proclaunch, "process_normal_finish.ini"], cwd=here
+        )
+        p.run()
+        p.kill()
+
+        self.assertIsNotNone(p.pid)
+        self.determine_status(p)
+
+
+if __name__ == "__main__":
+    mozunit.main()
diff --git a/testing/mozbase/mozprocess/tests/test_poll.py b/testing/mozbase/mozprocess/tests/test_poll.py
new file mode 100644
index 0000000000..475c61576c
--- /dev/null
+++ b/testing/mozbase/mozprocess/tests/test_poll.py
@@ -0,0 +1,150 @@
+#!/usr/bin/env python
+
+import os
+import signal
+import sys
+import time
+import unittest
+
+import mozinfo
+import mozunit
+import proctest
+from mozprocess import processhandler
+
+here = os.path.dirname(os.path.abspath(__file__))
+
+
+class ProcTestPoll(proctest.ProcTest):
+    """Class to test process poll."""
+
+    def test_poll_before_run(self):
+        """Process is not started, and poll() is called."""
+        p = processhandler.ProcessHandler(
+            [self.python, self.proclaunch, "process_normal_finish.ini"], cwd=here
+        )
+        self.assertRaises(RuntimeError, p.poll)
+
+    def test_poll_while_running(self):
+        """Process is started, and poll() is called."""
+        p = processhandler.ProcessHandler(
+            [self.python, self.proclaunch, "process_normal_finish.ini"], cwd=here
+        )
+        p.run()
+        returncode = p.poll()
+
+        self.assertEqual(returncode, None)
+
+        self.determine_status(p, True)
+        p.kill()
+
+    def test_poll_after_kill(self):
+        """Process is killed, and poll() is called."""
+        p = processhandler.ProcessHandler(
+            [self.python, self.proclaunch, "process_normal_finish.ini"], cwd=here
+        )
+        p.run()
+        returncode = p.kill()
+
+        # We killed the process, so the returncode should be non-zero
+        if mozinfo.isWin:
+            self.assertGreater(
+                returncode, 0, 'Positive returncode expected, got "%s"' % returncode
+            )
+        else:
+            self.assertLess(
+                returncode, 0, 'Negative returncode expected, got "%s"' % returncode
+            )
+
+        self.assertEqual(returncode, p.poll())
+
+        self.determine_status(p)
+
+    def test_poll_after_kill_no_process_group(self):
+        """Process (no group) is killed, and poll() is called."""
+        p = processhandler.ProcessHandler(
+            [
+                self.python,
+                self.proclaunch,
+                "process_normal_finish_no_process_group.ini",
+            ],
+            cwd=here,
+            ignore_children=True,
+        )
+        p.run()
+        returncode = p.kill()
+
+        # We killed the process, so the returncode should be non-zero
+        if mozinfo.isWin:
+            self.assertGreater(
+                returncode, 0, 'Positive returncode expected, got "%s"' % returncode
+            )
+        else:
+            self.assertLess(
+                returncode, 0, 'Negative returncode expected, got "%s"' % returncode
+            )
+
+        self.assertEqual(returncode, p.poll())
+
+        self.determine_status(p)
+
+    def test_poll_after_double_kill(self):
+        """Process is killed twice, and poll() is called."""
+        p = processhandler.ProcessHandler(
+            [self.python, self.proclaunch, "process_normal_finish.ini"], cwd=here
+        )
+        p.run()
+        p.kill()
+        returncode = p.kill()
+
+        # We killed the process, so the returncode should be non-zero
+        if mozinfo.isWin:
+            self.assertGreater(
+                returncode, 0, 'Positive returncode expected, got "%s"' % returncode
+            )
+        else:
+            self.assertLess(
+                returncode, 0, 'Negative returncode expected, got "%s"' % returncode
+            )
+
+        self.assertEqual(returncode, p.poll())
+
+        self.determine_status(p)
+
+    @unittest.skipIf(sys.platform.startswith("win"), "Bug 1493796")
+    def test_poll_after_external_kill(self):
+        """Process is killed externally, and poll() is called."""
+        p = processhandler.ProcessHandler(
+            [self.python, self.proclaunch, "process_normal_finish.ini"], cwd=here
+        )
+        p.run()
+
+        os.kill(p.pid, signal.SIGTERM)
+
+        # Allow the output reader thread to finish processing remaining data
+        for i in range(0, 100):
+            time.sleep(processhandler.INTERVAL_PROCESS_ALIVE_CHECK)
+            returncode = p.poll()
+            if returncode is not None:
+                break
+
+        # We killed the process, so the returncode should be non-zero
+        if mozinfo.isWin:
+            self.assertEqual(
+                returncode,
+                signal.SIGTERM,
+                'Positive returncode expected, got "%s"' % returncode,
+            )
+        else:
+            self.assertEqual(
+                returncode,
+                -signal.SIGTERM,
+                '%s expected, got "%s"' % (-signal.SIGTERM, returncode),
+            )
+
+        self.assertEqual(returncode, p.wait())
+
+        self.determine_status(p)
+
+
+if __name__ == "__main__":
+    mozunit.main()
diff --git a/testing/mozbase/mozprocess/tests/test_process_reader.py b/testing/mozbase/mozprocess/tests/test_process_reader.py
new file mode 100644
index 0000000000..36e2188ead
--- /dev/null
+++ b/testing/mozbase/mozprocess/tests/test_process_reader.py
@@ -0,0 +1,114 @@
+import subprocess
+import sys
+import unittest
+
+import mozunit
+from mozprocess.processhandler import ProcessReader, StoreOutput
+
+
+def run_python(str_code, stdout=subprocess.PIPE, stderr=subprocess.PIPE):
+    cmd = [sys.executable, "-c", str_code]
+    return subprocess.Popen(cmd, stdout=stdout, stderr=stderr)
+
+
+class TestProcessReader(unittest.TestCase):
+    def setUp(self):
+        self.out = StoreOutput()
+        self.err = StoreOutput()
+        self.finished = False
+
+        def on_finished():
+            self.finished = True
+
+        self.timeout = False
+
+        def on_timeout():
+            self.timeout = True
+
+        self.reader = ProcessReader(
+            stdout_callback=self.out,
+            stderr_callback=self.err,
+            finished_callback=on_finished,
+            timeout_callback=on_timeout,
+        )
+
+    def test_stdout_callback(self):
+        proc = run_python("print(1); print(2)")
+        self.reader.start(proc)
+        self.reader.thread.join()
+
+        self.assertEqual([x.decode("utf8") for x in self.out.output], ["1", "2"])
+        self.assertEqual(self.err.output, [])
+
+    def test_stderr_callback(self):
+        proc = run_python('import sys; sys.stderr.write("hello world\\n")')
+        self.reader.start(proc)
+        self.reader.thread.join()
+
+        self.assertEqual(self.out.output, [])
+        self.assertEqual([x.decode("utf8") for x in self.err.output], ["hello world"])
+
+    def test_stdout_and_stderr_callbacks(self):
+        proc = run_python(
+            'import sys; sys.stderr.write("hello world\\n"); print(1); print(2)'
+        )
+        self.reader.start(proc)
+        self.reader.thread.join()
+
+        self.assertEqual([x.decode("utf8") for x in self.out.output], ["1", "2"])
+        self.assertEqual([x.decode("utf8") for x in self.err.output], ["hello world"])
+
+    def test_finished_callback(self):
+        self.assertFalse(self.finished)
+        proc = run_python("")
+        self.reader.start(proc)
+        self.reader.thread.join()
+        self.assertTrue(self.finished)
+
+    def test_timeout(self):
+        self.reader.timeout = 0.05
+        self.assertFalse(self.timeout)
+        proc = run_python("import time; time.sleep(0.1)")
+        self.reader.start(proc)
+        self.reader.thread.join()
+        self.assertTrue(self.timeout)
+        self.assertFalse(self.finished)
+
+    def test_output_timeout(self):
+        self.reader.output_timeout = 0.05
+        self.assertFalse(self.timeout)
+        proc = run_python("import time; time.sleep(0.1)")
+        self.reader.start(proc)
+        self.reader.thread.join()
+        self.assertTrue(self.timeout)
+        self.assertFalse(self.finished)
+
+    def test_read_without_eol(self):
+        proc = run_python('import sys; sys.stdout.write("1")')
+        self.reader.start(proc)
+        self.reader.thread.join()
+        self.assertEqual([x.decode("utf8") for x in self.out.output], ["1"])
+
+    def test_read_with_strange_eol(self):
+        proc = run_python('import sys; sys.stdout.write("1\\r\\r\\r\\n")')
+        self.reader.start(proc)
+        self.reader.thread.join()
+        self.assertEqual([x.decode("utf8") for x in self.out.output], ["1"])
+
+    def test_mixed_stdout_stderr(self):
+        proc = run_python(
+            'import sys; sys.stderr.write("hello world\\n"); print(1); print(2)',
+            stderr=subprocess.STDOUT,
+        )
+        self.reader.start(proc)
+        self.reader.thread.join()
+
+        self.assertEqual(
+            sorted([x.decode("utf8") for x in self.out.output]),
+            sorted(["1", "2", "hello world"]),
+        )
+        self.assertEqual(self.err.output, [])
+
+
+if __name__ == "__main__":
+    mozunit.main()
diff --git a/testing/mozbase/mozprocess/tests/test_wait.py b/testing/mozbase/mozprocess/tests/test_wait.py
new file mode 100644
index 0000000000..20d1f0ca17
--- /dev/null
+++ b/testing/mozbase/mozprocess/tests/test_wait.py
@@ -0,0 +1,144 @@
+#!/usr/bin/env python
+
+import os
+import signal
+import sys
+
+import mozinfo
+import mozunit
+import proctest
+from mozprocess import processhandler
+
+here = os.path.dirname(os.path.abspath(__file__))
+
+
+class ProcTestWait(proctest.ProcTest):
+    """Class to test process waits and timeouts"""
+
+    def test_normal_finish(self):
+        """Process is started, runs to completion while we wait for it"""
+
+        p = processhandler.ProcessHandler(
+            [self.python, self.proclaunch, "process_normal_finish.ini"], cwd=here
+        )
+        p.run()
+        p.wait()
+
+        self.determine_status(p)
+
+    def test_wait(self):
+        """Process is started runs to completion while we wait indefinitely"""
+
+        p = processhandler.ProcessHandler(
+            [self.python, self.proclaunch, "process_waittimeout_10s.ini"], cwd=here
+        )
+        p.run()
+        p.wait()
+
+        self.determine_status(p)
+
+    def test_timeout(self):
+        """Process is started, runs but we time out waiting on it
+        to complete
+        """
+        myenv = None
+        # On macosx1014, subprocess fails to find `six` when run with python3.
+        # This ensures that subprocess first looks to sys.path to find `six`.
+        # See https://bugzilla.mozilla.org/show_bug.cgi?id=1562083
+        if sys.platform == "darwin" and sys.version_info[0] > 2:
+            myenv = os.environ.copy()
+            myenv["PYTHONPATH"] = ":".join(sys.path)
+
+        p = processhandler.ProcessHandler(
+            [self.python, self.proclaunch, "process_waittimeout.ini"],
+            cwd=here,
+            env=myenv,
+        )
+        p.run(timeout=10)
+        p.wait()
+
+        if mozinfo.isUnix:
+            # process was killed, so returncode should be negative
+            self.assertLess(p.proc.returncode, 0)
+
+        self.determine_status(p, False, ["returncode", "didtimeout"])
+
+    def test_waittimeout(self):
+        """
+        Process is started, then wait is called and times out.
+        Process is still running and didn't timeout
+        """
+        p = processhandler.ProcessHandler(
+            [self.python, self.proclaunch, "process_waittimeout_10s.ini"], cwd=here
+        )
+
+        p.run()
+        p.wait(timeout=0)
+
+        self.determine_status(p, True, ())
+
+    def test_waitnotimeout(self):
+        """Process is started, runs to completion before our wait times out"""
+        p = processhandler.ProcessHandler(
+            [self.python, self.proclaunch, "process_waittimeout_10s.ini"], cwd=here
+        )
+        p.run(timeout=30)
+        p.wait()
+
+        self.determine_status(p)
+
+    def test_wait_twice_after_kill(self):
+        """Bug 968718: Process is started and stopped. wait() twice afterward."""
+        p = processhandler.ProcessHandler(
+            [self.python, self.proclaunch, "process_waittimeout.ini"], cwd=here
+        )
+        p.run()
+        p.kill()
+        returncode1 = p.wait()
+        returncode2 = p.wait()
+
+        self.determine_status(p)
+
+        # We killed the process, so the returncode should be non-zero
+        if mozinfo.isWin:
+            self.assertGreater(
+                returncode2, 0, 'Positive returncode expected, got "%s"' % returncode2
+            )
+        else:
+            self.assertLess(
+                returncode2, 0, 'Negative returncode expected, got "%s"' % returncode2
+            )
+        self.assertEqual(
+            returncode1, returncode2, "Expected both returncodes of wait() to be equal"
+        )
+
+    def test_wait_after_external_kill(self):
+        """Process is killed externally, and poll() is called."""
+        p = processhandler.ProcessHandler(
+            [self.python, self.proclaunch, "process_normal_finish.ini"], cwd=here
+        )
+        p.run()
+        os.kill(p.pid, signal.SIGTERM)
+        returncode = p.wait()
+
+        # We killed the process, so the returncode should be non-zero
+        if mozinfo.isWin:
+            self.assertEqual(
+                returncode,
+                signal.SIGTERM,
+                'Positive returncode expected, got "%s"' % returncode,
+            )
+        else:
+            self.assertEqual(
+                returncode,
+                -signal.SIGTERM,
+                '%s expected, got "%s"' % (-signal.SIGTERM, returncode),
+            )
+
+        self.assertEqual(returncode, p.poll())
+
+        self.determine_status(p)
+
+
+if __name__ == "__main__":
+    mozunit.main()