commit gcc-4.4.3 which is used to build gcc-4.4.3 Android toolchain in master.

The source is based on fsf gcc-4.4.3 and contains local patches which
are recorded in gcc-4.4.3/README.google.

Change-Id: Id8c6d6927df274ae9749196a1cc24dbd9abc9887

1 files changed, 317 insertions, 0 deletions

diff --git a/gcc-4.4.3/libobjc/thr-posix.c b/gcc-4.4.3/libobjc/thr-posix.c
new file mode 100644
index 000000000..6e6061457
--- /dev/null
+++ b/gcc-4.4.3/libobjc/thr-posix.c
@@ -0,0 +1,317 @@
+/* GNU Objective C Runtime Thread Interface for POSIX compliant threads
+   Copyright (C) 1996, 1997, 2009 Free Software Foundation, Inc.
+   Contributed by Galen C. Hunt (gchunt@cs.rochester.edu)
+   Modified for Linux/Pthreads by Kai-Uwe Sattler (kus@iti.cs.uni-magdeburg.de)
+   Modified for posix compliance by Chris Ball (cball@fmco.com)
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3, or (at your option) any later version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+details.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+<http://www.gnu.org/licenses/>.  */
+
+
+#include "objc/thr.h"
+#include "objc/runtime.h"
+#include <pthread.h>
+
+/* Key structure for maintaining thread specific storage */
+static pthread_key_t _objc_thread_storage;
+static pthread_attr_t _objc_thread_attribs;
+
+/* Backend initialization functions */
+
+/* Initialize the threads subsystem. */
+int
+__objc_init_thread_system(void)
+{
+  /* Initialize the thread storage key */
+  if (pthread_key_create(&_objc_thread_storage, NULL) == 0)
+    {
+      /*
+       * The normal default detach state for threads is PTHREAD_CREATE_JOINABLE
+       * which causes threads to not die when you think they should.
+	   */
+      if (pthread_attr_init(&_objc_thread_attribs) == 0)
+        {
+          if (pthread_attr_setdetachstate(&_objc_thread_attribs, 
+                                          PTHREAD_CREATE_DETACHED) == 0)
+            return 0;
+        }
+    }
+
+  return -1;
+}
+
+/* Close the threads subsystem. */
+int
+__objc_close_thread_system(void)
+{
+  if (pthread_key_delete(_objc_thread_storage) == 0)
+    {
+      if (pthread_attr_destroy(&_objc_thread_attribs) == 0)
+        return 0;
+    }
+
+  return -1;
+}
+
+/* Backend thread functions */
+
+/* Create a new thread of execution. */
+objc_thread_t
+__objc_thread_detach(void (*func)(void *arg), void *arg)
+{
+  objc_thread_t thread_id;
+  pthread_t new_thread_handle;
+  
+  if (!(pthread_create(&new_thread_handle, &_objc_thread_attribs, 
+                       (void *)func, arg)))
+    thread_id = *(objc_thread_t *)&new_thread_handle;
+  else
+    thread_id = NULL;
+  
+  return thread_id;
+}
+
+/* Set the current thread's priority.
+ *
+ * Be aware that the default schedpolicy often disallows thread priorities.
+ */
+int
+__objc_thread_set_priority(int priority)
+{
+  pthread_t thread_id = pthread_self();
+  int policy;
+  struct sched_param params;
+  int priority_min, priority_max;
+
+  if (pthread_getschedparam(thread_id, &policy, &params) == 0)
+    {
+      if ((priority_max = sched_get_priority_max(policy)) != 0)
+        return -1;
+
+      if ((priority_min = sched_get_priority_min(policy)) != 0)
+        return -1;
+
+      if (priority > priority_max)
+        priority = priority_max;
+      else if (priority < priority_min)
+        priority = priority_min;
+      params.sched_priority = priority;
+
+      /*
+       * The solaris 7 and several other man pages incorrectly state that
+       * this should be a pointer to policy but pthread.h is universally
+       * at odds with this.
+       */
+      if (pthread_setschedparam(thread_id, policy, &params) == 0)
+        return 0;
+    }
+  return -1;
+}
+
+/* Return the current thread's priority. */
+int
+__objc_thread_get_priority(void)
+{
+  int policy;
+  struct sched_param params;
+
+  if (pthread_getschedparam(pthread_self(), &policy, &params) == 0)
+    return params.sched_priority;
+  else
+    return -1;
+}
+
+/* Yield our process time to another thread. */
+void
+__objc_thread_yield(void)
+{
+  sched_yield();
+}
+
+/* Terminate the current thread. */
+int
+__objc_thread_exit(void)
+{
+  /* exit the thread */
+  pthread_exit(&__objc_thread_exit_status);
+
+  /* Failed if we reached here */
+  return -1;
+}
+
+/* Returns an integer value which uniquely describes a thread. */
+objc_thread_t
+__objc_thread_id(void)
+{
+  pthread_t self = pthread_self();
+
+  return *(objc_thread_t *)&self;
+}
+
+/* Sets the thread's local storage pointer. */
+int
+__objc_thread_set_data(void *value)
+{
+  if (pthread_setspecific(_objc_thread_storage, value) == 0)
+    return 0;
+  else
+    return -1;
+}
+
+/* Returns the thread's local storage pointer. */
+void *
+__objc_thread_get_data(void)
+{
+  return pthread_getspecific(_objc_thread_storage);
+}
+
+/* Backend mutex functions */
+
+/* Allocate a mutex. */
+int
+__objc_mutex_allocate(objc_mutex_t mutex)
+{
+  mutex->backend = objc_malloc(sizeof(pthread_mutex_t));
+
+  if (pthread_mutex_init((pthread_mutex_t *)mutex->backend, NULL))
+    {
+      objc_free(mutex->backend);
+      mutex->backend = NULL;
+      return -1;
+    }
+
+  return 0;
+}
+
+/* Deallocate a mutex. */
+int
+__objc_mutex_deallocate(objc_mutex_t mutex)
+{
+  int count = 1;
+
+  /*
+   * Posix Threads specifically require that the thread be unlocked for
+   * pthread_mutex_destroy to work.
+   */
+
+  while (count)
+    {
+      if ((count = pthread_mutex_unlock((pthread_mutex_t*)mutex->backend)) < 0)
+        return -1;
+    }
+
+  if (pthread_mutex_destroy((pthread_mutex_t *)mutex->backend))
+    return -1;
+
+  objc_free(mutex->backend);
+  mutex->backend = NULL;
+  return 0;
+}
+
+/* Grab a lock on a mutex. */
+int
+__objc_mutex_lock(objc_mutex_t mutex)
+{
+  if (pthread_mutex_lock((pthread_mutex_t *)mutex->backend) == 0)
+    return 0;
+  else
+    return -1;
+}
+
+/* Try to grab a lock on a mutex. */
+int
+__objc_mutex_trylock(objc_mutex_t mutex)
+{
+  if (pthread_mutex_trylock((pthread_mutex_t *)mutex->backend) == 0)
+    return 0;
+  else
+    return -1;
+}
+
+/* Unlock the mutex */
+int
+__objc_mutex_unlock(objc_mutex_t mutex)
+{
+  if (pthread_mutex_unlock((pthread_mutex_t *)mutex->backend) == 0)
+    return 0;
+  else
+    return -1;
+}
+
+/* Backend condition mutex functions */
+
+/* Allocate a condition. */
+int
+__objc_condition_allocate(objc_condition_t condition)
+{
+  condition->backend = objc_malloc(sizeof(pthread_cond_t));
+
+  if (pthread_cond_init((pthread_cond_t *)condition->backend, NULL))
+    {
+      objc_free(condition->backend);
+      condition->backend = NULL;
+      return -1;
+    }
+
+  return 0;
+}
+
+/* Deallocate a condition. */
+int
+__objc_condition_deallocate(objc_condition_t condition)
+{
+  if (pthread_cond_destroy((pthread_cond_t *)condition->backend))
+    return -1;
+
+  objc_free(condition->backend);
+  condition->backend = NULL;
+  return 0;
+}
+
+/* Wait on the condition */
+int
+__objc_condition_wait(objc_condition_t condition, objc_mutex_t mutex)
+{
+  if (pthread_cond_wait((pthread_cond_t *)condition->backend,
+                        (pthread_mutex_t *)mutex->backend) == 0)
+    return 0;
+  else
+    return -1;
+}
+
+/* Wake up all threads waiting on this condition. */
+int
+__objc_condition_broadcast(objc_condition_t condition)
+{
+  if (pthread_cond_broadcast((pthread_cond_t *)condition->backend) == 0)
+    return 0;
+  else
+    return -1;
+}
+
+/* Wake up one thread waiting on this condition. */
+int
+__objc_condition_signal(objc_condition_t condition)
+{
+  if (pthread_cond_signal((pthread_cond_t *)condition->backend) == 0)
+    return 0;
+  else
+    return -1;
+}