summaryrefslogtreecommitdiffstats
path: root/toolkit/profile/gtest/TestProfileLockRetry.cpp
diff options
context:
space:
mode:
authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 19:33:14 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 19:33:14 +0000
commit36d22d82aa202bb199967e9512281e9a53db42c9 (patch)
tree105e8c98ddea1c1e4784a60a5a6410fa416be2de /toolkit/profile/gtest/TestProfileLockRetry.cpp
parentInitial commit. (diff)
downloadfirefox-esr-upstream.tar.xz
firefox-esr-upstream.zip
Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r--toolkit/profile/gtest/TestProfileLockRetry.cpp74
1 files changed, 74 insertions, 0 deletions
diff --git a/toolkit/profile/gtest/TestProfileLockRetry.cpp b/toolkit/profile/gtest/TestProfileLockRetry.cpp
new file mode 100644
index 0000000000..8301103493
--- /dev/null
+++ b/toolkit/profile/gtest/TestProfileLockRetry.cpp
@@ -0,0 +1,74 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* 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/. */
+
+#include "gtest/gtest.h"
+
+#include <sys/eventfd.h>
+#include <sched.h>
+
+#include "nsComponentManagerUtils.h"
+#include "nsCOMPtr.h"
+#include "nsIFile.h"
+#include "nsProfileLock.h"
+#include "nsString.h"
+
+TEST(ProfileLock, RetryLock)
+{
+ char templ[] = "/tmp/profilelocktest.XXXXXX";
+ char* tmpdir = mkdtemp(templ);
+ ASSERT_NE(tmpdir, nullptr);
+
+ nsProfileLock myLock;
+ nsProfileLock myLock2;
+ nsresult rv;
+ nsCOMPtr<nsIFile> dir(do_CreateInstance(NS_LOCAL_FILE_CONTRACTID, &rv));
+ ASSERT_EQ(NS_SUCCEEDED(rv), true);
+
+ rv = dir->InitWithNativePath(nsCString(tmpdir));
+ ASSERT_EQ(NS_SUCCEEDED(rv), true);
+
+ int eventfd_fd = eventfd(0, 0);
+ ASSERT_GE(eventfd_fd, 0);
+
+ // fcntl advisory locks are per process, so it's hard
+ // to avoid using fork here.
+ pid_t childpid = fork();
+
+ if (childpid) {
+ // parent
+
+ // blocking read causing us to lose the race
+ eventfd_t value;
+ EXPECT_EQ(0, eventfd_read(eventfd_fd, &value));
+
+ rv = myLock2.Lock(dir, nullptr);
+ EXPECT_EQ(NS_ERROR_FILE_ACCESS_DENIED, rv);
+
+ // kill the child
+ EXPECT_EQ(0, kill(childpid, SIGTERM));
+
+ // reap zombie (required to collect the lock)
+ int status;
+ EXPECT_EQ(childpid, waitpid(childpid, &status, 0));
+
+ rv = myLock2.Lock(dir, nullptr);
+ EXPECT_EQ(NS_SUCCEEDED(rv), true);
+ } else {
+ // child
+ rv = myLock.Lock(dir, nullptr);
+ ASSERT_EQ(NS_SUCCEEDED(rv), true);
+
+ // unblock parent
+ EXPECT_EQ(0, eventfd_write(eventfd_fd, 1));
+
+ // parent will kill us
+ for (;;) sleep(1);
+ }
+
+ close(eventfd_fd);
+
+ myLock.Cleanup();
+ myLock2.Cleanup();
+}