Adding upstream version 110.0.1.upstream/110.0.1upstream

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

1 files changed, 186 insertions, 0 deletions

diff --git a/nsprpub/pr/include/md/_pth.h b/nsprpub/pr/include/md/_pth.h
new file mode 100644
index 0000000000..37d26e7005
--- /dev/null
+++ b/nsprpub/pr/include/md/_pth.h
@@ -0,0 +1,186 @@
+/* -*- Mode: C++; tab-width: 4; 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/. */
+
+#ifndef nspr_pth_defs_h_
+#define nspr_pth_defs_h_
+
+/*
+** Appropriate definitions of entry points not used in a pthreads world
+*/
+#define _PR_MD_BLOCK_CLOCK_INTERRUPTS()
+#define _PR_MD_UNBLOCK_CLOCK_INTERRUPTS()
+#define _PR_MD_DISABLE_CLOCK_INTERRUPTS()
+#define _PR_MD_ENABLE_CLOCK_INTERRUPTS()
+
+#if defined(BSDI)
+/*
+ * Mutex and condition attributes are not supported.  The attr
+ * argument to pthread_mutex_init() and pthread_cond_init() must
+ * be passed as NULL.
+ *
+ * The memset calls in _PT_PTHREAD_MUTEX_INIT and _PT_PTHREAD_COND_INIT
+ * are to work around BSDI's using a single bit to indicate a mutex
+ * or condition variable is initialized.  This entire BSDI section
+ * will go away when BSDI releases updated threads libraries for
+ * BSD/OS 3.1 and 4.0.
+ */
+#define _PT_PTHREAD_MUTEXATTR_INIT(x)     0
+#define _PT_PTHREAD_MUTEXATTR_DESTROY(x)  /* */
+#define _PT_PTHREAD_MUTEX_INIT(m, a)      (memset(&(m), 0, sizeof(m)), \
+                                      pthread_mutex_init(&(m), NULL))
+#define _PT_PTHREAD_MUTEX_IS_LOCKED(m)    (EBUSY == pthread_mutex_trylock(&(m)))
+#define _PT_PTHREAD_CONDATTR_INIT(x)      0
+#define _PT_PTHREAD_CONDATTR_DESTROY(x)   /* */
+#define _PT_PTHREAD_COND_INIT(m, a)       (memset(&(m), 0, sizeof(m)), \
+                                      pthread_cond_init(&(m), NULL))
+#else
+#define _PT_PTHREAD_MUTEXATTR_INIT        pthread_mutexattr_init
+#define _PT_PTHREAD_MUTEXATTR_DESTROY     pthread_mutexattr_destroy
+#define _PT_PTHREAD_MUTEX_INIT(m, a)      pthread_mutex_init(&(m), &(a))
+#if defined(FREEBSD)
+#define _PT_PTHREAD_MUTEX_IS_LOCKED(m)    pt_pthread_mutex_is_locked(&(m))
+#else
+#define _PT_PTHREAD_MUTEX_IS_LOCKED(m)    (EBUSY == pthread_mutex_trylock(&(m)))
+#endif
+#if defined(ANDROID)
+/* Conditional attribute init and destroy aren't implemented in bionic. */
+#define _PT_PTHREAD_CONDATTR_INIT(x)      0
+#define _PT_PTHREAD_CONDATTR_DESTROY(x)   /* */
+#else
+#define _PT_PTHREAD_CONDATTR_INIT         pthread_condattr_init
+#define _PT_PTHREAD_CONDATTR_DESTROY      pthread_condattr_destroy
+#endif
+#define _PT_PTHREAD_COND_INIT(m, a)       pthread_cond_init(&(m), &(a))
+#endif
+
+/* The pthreads standard does not specify an invalid value for the
+ * pthread_t handle.  (0 is usually an invalid pthread identifier
+ * but there are exceptions, for example, DG/UX.)  These macros
+ * define a way to set the handle to or compare the handle with an
+ * invalid identifier.  These macros are not portable and may be
+ * more of a problem as we adapt to more pthreads implementations.
+ * They are only used in the PRMonitor functions.  Do not use them
+ * in new code.
+ *
+ * Unfortunately some of our clients depend on certain properties
+ * of our PRMonitor implementation, preventing us from replacing
+ * it by a portable implementation.
+ * - High-performance servers like the fact that PR_EnterMonitor
+ *   only calls PR_Lock and PR_ExitMonitor only calls PR_Unlock.
+ *   (A portable implementation would use a PRLock and a PRCondVar
+ *   to implement the recursive lock in a monitor and call both
+ *   PR_Lock and PR_Unlock in PR_EnterMonitor and PR_ExitMonitor.)
+ *   Unfortunately this forces us to read the monitor owner field
+ *   without holding a lock.
+ * - One way to make it safe to read the monitor owner field
+ *   without holding a lock is to make that field a PRThread*
+ *   (one should be able to read a pointer with a single machine
+ *   instruction).  However, PR_GetCurrentThread calls calloc if
+ *   it is called by a thread that was not created by NSPR.  The
+ *   malloc tracing tools in the Mozilla client use PRMonitor for
+ *   locking in their malloc, calloc, and free functions.  If
+ *   PR_EnterMonitor calls any of these functions, infinite
+ *   recursion ensues.
+ */
+#if defined(AIX) || defined(SOLARIS) \
+    || defined(LINUX) || defined(__GNU__) || defined(__GLIBC__) \
+    || defined(HPUX) || defined(FREEBSD) \
+    || defined(NETBSD) || defined(OPENBSD) || defined(BSDI) \
+    || defined(NTO) || defined(DARWIN) \
+    || defined(UNIXWARE) || defined(RISCOS)
+#define _PT_PTHREAD_INVALIDATE_THR_HANDLE(t)  (t) = 0
+#define _PT_PTHREAD_THR_HANDLE_IS_INVALID(t)  (t) == 0
+#define _PT_PTHREAD_COPY_THR_HANDLE(st, dt)   (dt) = (st)
+#else
+#error "pthreads is not supported for this architecture"
+#endif
+
+#if defined(_PR_PTHREADS)
+#define _PT_PTHREAD_ATTR_INIT            pthread_attr_init
+#define _PT_PTHREAD_ATTR_DESTROY         pthread_attr_destroy
+#define _PT_PTHREAD_CREATE(t, a, f, r)   pthread_create(t, &a, f, r)
+#define _PT_PTHREAD_KEY_CREATE           pthread_key_create
+#define _PT_PTHREAD_ATTR_SETSCHEDPOLICY  pthread_attr_setschedpolicy
+#define _PT_PTHREAD_ATTR_GETSTACKSIZE(a, s) pthread_attr_getstacksize(a, s)
+#define _PT_PTHREAD_GETSPECIFIC(k, r)    (r) = pthread_getspecific(k)
+#else
+#error "Cannot determine pthread strategy"
+#endif
+
+/*
+ * These platforms don't have sigtimedwait()
+ */
+#if (defined(AIX) && !defined(AIX4_3_PLUS)) \
+    || defined(LINUX) || defined(__GNU__)|| defined(__GLIBC__) \
+    || defined(FREEBSD) || defined(NETBSD) || defined(OPENBSD) \
+    || defined(BSDI) || defined(UNIXWARE) \
+    || defined(DARWIN)
+#define PT_NO_SIGTIMEDWAIT
+#endif
+
+#if defined(AIX)
+#include <sys/priv.h>
+#include <sys/sched.h>
+#ifndef PTHREAD_CREATE_JOINABLE
+#define PTHREAD_CREATE_JOINABLE     PTHREAD_CREATE_UNDETACHED
+#endif
+#define PT_PRIO_MIN            DEFAULT_PRIO
+#define PT_PRIO_MAX            DEFAULT_PRIO
+#elif defined(HPUX)
+#include <sys/sched.h>
+#define PT_PRIO_MIN            sched_get_priority_min(SCHED_OTHER)
+#define PT_PRIO_MAX            sched_get_priority_max(SCHED_OTHER)
+#elif defined(LINUX) || defined(__GNU__) || defined(__GLIBC__) \
+    || defined(FREEBSD)
+#define PT_PRIO_MIN            sched_get_priority_min(SCHED_OTHER)
+#define PT_PRIO_MAX            sched_get_priority_max(SCHED_OTHER)
+#elif defined(NTO)
+/*
+ * Neutrino has functions that return the priority range but
+ * they return invalid numbers, so I just hard coded these here
+ * for now.  Jerry.Kirk@Nexarecorp.com
+ */
+#define PT_PRIO_MIN            0
+#define PT_PRIO_MAX            30
+#elif defined(SOLARIS)
+/*
+ * Solaris doesn't seem to have macros for the min/max priorities.
+ * The range of 0-127 is mentioned in the pthread_setschedparam(3T)
+ * man pages, and pthread_setschedparam indeed allows 0-127.  However,
+ * pthread_attr_setschedparam does not allow 0; it allows 1-127.
+ */
+#define PT_PRIO_MIN            1
+#define PT_PRIO_MAX            127
+#elif defined(OPENBSD)
+#define PT_PRIO_MIN            0
+#define PT_PRIO_MAX            31
+#elif defined(NETBSD) \
+    || defined(BSDI) || defined(DARWIN) || defined(UNIXWARE) \
+    || defined(RISCOS) /* XXX */
+#define PT_PRIO_MIN            0
+#define PT_PRIO_MAX            126
+#else
+#error "pthreads is not supported for this architecture"
+#endif
+
+/*
+ * The _PT_PTHREAD_YIELD function is called from a signal handler.
+ * Needed for garbage collection -- Look at PR_Suspend/PR_Resume
+ * implementation.
+ */
+#if defined(AIX)
+extern int (*_PT_aix_yield_fcn)();
+#define _PT_PTHREAD_YIELD()         (*_PT_aix_yield_fcn)()
+#elif defined(HPUX) || defined(SOLARIS) \
+    || defined(LINUX) || defined(__GNU__) || defined(__GLIBC__) \
+    || defined(FREEBSD) || defined(NETBSD) || defined(OPENBSD) \
+    || defined(BSDI) || defined(NTO) || defined(DARWIN) \
+    || defined(UNIXWARE) || defined(RISCOS)
+#define _PT_PTHREAD_YIELD()             sched_yield()
+#else
+#error "Need to define _PT_PTHREAD_YIELD for this platform"
+#endif
+
+#endif /* nspr_pth_defs_h_ */