Initial checkin of GCC 4.9.0 from trunk (r208799).

Change-Id: I48a3c08bb98542aa215912a75f03c0890e497dba

1 files changed, 889 insertions, 0 deletions

diff --git a/gcc-4.9/libgcc/gthr-posix.h b/gcc-4.9/libgcc/gthr-posix.h
new file mode 100644
index 000000000..7003a9135
--- /dev/null
+++ b/gcc-4.9/libgcc/gthr-posix.h
@@ -0,0 +1,889 @@
+/* Threads compatibility routines for libgcc2 and libobjc.  */
+/* Compile this one with gcc.  */
+/* Copyright (C) 1997-2014 Free Software Foundation, Inc.
+
+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/>.  */
+
+#ifndef GCC_GTHR_POSIX_H
+#define GCC_GTHR_POSIX_H
+
+/* POSIX threads specific definitions.
+   Easy, since the interface is just one-to-one mapping.  */
+
+#define __GTHREADS 1
+#define __GTHREADS_CXX0X 1
+
+#include <pthread.h>
+
+#if ((defined(_LIBOBJC) || defined(_LIBOBJC_WEAK)) \
+     || !defined(_GTHREAD_USE_MUTEX_TIMEDLOCK))
+# include <unistd.h>
+# if defined(_POSIX_TIMEOUTS) && _POSIX_TIMEOUTS >= 0
+#  define _GTHREAD_USE_MUTEX_TIMEDLOCK 1
+# else
+#  define _GTHREAD_USE_MUTEX_TIMEDLOCK 0
+# endif
+#endif
+
+typedef pthread_t __gthread_t;
+typedef pthread_key_t __gthread_key_t;
+typedef pthread_once_t __gthread_once_t;
+typedef pthread_mutex_t __gthread_mutex_t;
+typedef pthread_mutex_t __gthread_recursive_mutex_t;
+typedef pthread_cond_t __gthread_cond_t;
+typedef struct timespec __gthread_time_t;
+
+/* POSIX like conditional variables are supported.  Please look at comments
+   in gthr.h for details. */
+#define __GTHREAD_HAS_COND	1
+
+#define __GTHREAD_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
+#define __GTHREAD_MUTEX_INIT_FUNCTION __gthread_mutex_init_function
+#define __GTHREAD_ONCE_INIT PTHREAD_ONCE_INIT
+#if defined(PTHREAD_RECURSIVE_MUTEX_INITIALIZER)
+#define __GTHREAD_RECURSIVE_MUTEX_INIT PTHREAD_RECURSIVE_MUTEX_INITIALIZER
+#elif defined(PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP)
+#define __GTHREAD_RECURSIVE_MUTEX_INIT PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP
+#else
+#define __GTHREAD_RECURSIVE_MUTEX_INIT_FUNCTION __gthread_recursive_mutex_init_function
+#endif
+#define __GTHREAD_COND_INIT PTHREAD_COND_INITIALIZER
+#define __GTHREAD_TIME_INIT {0,0}
+
+#ifdef _GTHREAD_USE_MUTEX_INIT_FUNC
+# undef __GTHREAD_MUTEX_INIT
+#endif
+#ifdef _GTHREAD_USE_RECURSIVE_MUTEX_INIT_FUNC
+# undef __GTHREAD_RECURSIVE_MUTEX_INIT
+# undef __GTHREAD_RECURSIVE_MUTEX_INIT_FUNCTION
+# define __GTHREAD_RECURSIVE_MUTEX_INIT_FUNCTION __gthread_recursive_mutex_init_function
+#endif
+#ifdef _GTHREAD_USE_COND_INIT_FUNC
+# undef __GTHREAD_COND_INIT
+# define __GTHREAD_COND_INIT_FUNCTION __gthread_cond_init_function
+#endif
+
+#if SUPPORTS_WEAK && GTHREAD_USE_WEAK
+# ifndef __gthrw_pragma
+#  define __gthrw_pragma(pragma)
+# endif
+# define __gthrw2(name,name2,type) \
+  static __typeof(type) name __attribute__ ((__weakref__(#name2))); \
+  __gthrw_pragma(weak type)
+# define __gthrw_(name) __gthrw_ ## name
+#else
+# define __gthrw2(name,name2,type)
+# define __gthrw_(name) name
+#endif
+
+/* Typically, __gthrw_foo is a weak reference to symbol foo.  */
+#define __gthrw(name) __gthrw2(__gthrw_ ## name,name,name)
+
+__gthrw(pthread_once)
+__gthrw(pthread_getspecific)
+__gthrw(pthread_setspecific)
+
+__gthrw(pthread_create)
+__gthrw(pthread_join)
+__gthrw(pthread_equal)
+__gthrw(pthread_self)
+__gthrw(pthread_detach)
+#ifndef __BIONIC__
+__gthrw(pthread_cancel)
+#endif
+__gthrw(sched_yield)
+
+__gthrw(pthread_mutex_lock)
+__gthrw(pthread_mutex_trylock)
+#if _GTHREAD_USE_MUTEX_TIMEDLOCK
+__gthrw(pthread_mutex_timedlock)
+#endif
+__gthrw(pthread_mutex_unlock)
+__gthrw(pthread_mutex_init)
+__gthrw(pthread_mutex_destroy)
+
+__gthrw(pthread_cond_init)
+__gthrw(pthread_cond_broadcast)
+__gthrw(pthread_cond_signal)
+__gthrw(pthread_cond_wait)
+__gthrw(pthread_cond_timedwait)
+__gthrw(pthread_cond_destroy)
+
+__gthrw(pthread_key_create)
+__gthrw(pthread_key_delete)
+__gthrw(pthread_mutexattr_init)
+__gthrw(pthread_mutexattr_settype)
+__gthrw(pthread_mutexattr_destroy)
+
+
+#if defined(_LIBOBJC) || defined(_LIBOBJC_WEAK)
+/* Objective-C.  */
+__gthrw(pthread_exit)
+#ifdef _POSIX_PRIORITY_SCHEDULING
+#ifdef _POSIX_THREAD_PRIORITY_SCHEDULING
+__gthrw(sched_get_priority_max)
+__gthrw(sched_get_priority_min)
+#endif /* _POSIX_THREAD_PRIORITY_SCHEDULING */
+#endif /* _POSIX_PRIORITY_SCHEDULING */
+__gthrw(pthread_attr_destroy)
+__gthrw(pthread_attr_init)
+__gthrw(pthread_attr_setdetachstate)
+#ifdef _POSIX_THREAD_PRIORITY_SCHEDULING
+__gthrw(pthread_getschedparam)
+__gthrw(pthread_setschedparam)
+#endif /* _POSIX_THREAD_PRIORITY_SCHEDULING */
+#endif /* _LIBOBJC || _LIBOBJC_WEAK */
+
+#if SUPPORTS_WEAK && GTHREAD_USE_WEAK
+
+/* On Solaris 2.6 up to 9, the libc exposes a POSIX threads interface even if
+   -pthreads is not specified.  The functions are dummies and most return an
+   error value.  However pthread_once returns 0 without invoking the routine
+   it is passed so we cannot pretend that the interface is active if -pthreads
+   is not specified.  On Solaris 2.5.1, the interface is not exposed at all so
+   we need to play the usual game with weak symbols.  On Solaris 10 and up, a
+   working interface is always exposed.  On FreeBSD 6 and later, libc also
+   exposes a dummy POSIX threads interface, similar to what Solaris 2.6 up
+   to 9 does.  FreeBSD >= 700014 even provides a pthread_cancel stub in libc,
+   which means the alternate __gthread_active_p below cannot be used there.  */
+
+#if defined(__FreeBSD__) || (defined(__sun) && defined(__svr4__))
+
+static volatile int __gthread_active = -1;
+
+static void
+__gthread_trigger (void)
+{
+  __gthread_active = 1;
+}
+
+static inline int
+__gthread_active_p (void)
+{
+  static pthread_mutex_t __gthread_active_mutex = PTHREAD_MUTEX_INITIALIZER;
+  static pthread_once_t __gthread_active_once = PTHREAD_ONCE_INIT;
+
+  /* Avoid reading __gthread_active twice on the main code path.  */
+  int __gthread_active_latest_value = __gthread_active;
+
+  /* This test is not protected to avoid taking a lock on the main code
+     path so every update of __gthread_active in a threaded program must
+     be atomic with regard to the result of the test.  */
+  if (__builtin_expect (__gthread_active_latest_value < 0, 0))
+    {
+      if (__gthrw_(pthread_once))
+	{
+	  /* If this really is a threaded program, then we must ensure that
+	     __gthread_active has been set to 1 before exiting this block.  */
+	  __gthrw_(pthread_mutex_lock) (&__gthread_active_mutex);
+	  __gthrw_(pthread_once) (&__gthread_active_once, __gthread_trigger);
+	  __gthrw_(pthread_mutex_unlock) (&__gthread_active_mutex);
+	}
+
+      /* Make sure we'll never enter this block again.  */
+      if (__gthread_active < 0)
+	__gthread_active = 0;
+
+      __gthread_active_latest_value = __gthread_active;
+    }
+
+  return __gthread_active_latest_value != 0;
+}
+
+#else /* neither FreeBSD nor Solaris */
+
+/* For a program to be multi-threaded the only thing that it certainly must
+   be using is pthread_create.  However, there may be other libraries that
+   intercept pthread_create with their own definitions to wrap pthreads
+   functionality for some purpose.  In those cases, pthread_create being
+   defined might not necessarily mean that libpthread is actually linked
+   in.
+
+   For the GNU C library, we can use a known internal name.  This is always
+   available in the ABI, but no other library would define it.  That is
+   ideal, since any public pthread function might be intercepted just as
+   pthread_create might be.  __pthread_key_create is an "internal"
+   implementation symbol, but it is part of the public exported ABI.  Also,
+   it's among the symbols that the static libpthread.a always links in
+   whenever pthread_create is used, so there is no danger of a false
+   negative result in any statically-linked, multi-threaded program.
+
+   For others, we choose pthread_cancel as a function that seems unlikely
+   to be redefined by an interceptor library.  The bionic (Android) C
+   library does not provide pthread_cancel, so we do use pthread_create
+   there (and interceptor libraries lose).  */
+
+#ifdef __GLIBC__
+__gthrw2(__gthrw_(__pthread_key_create),
+	 __pthread_key_create,
+	 pthread_key_create)
+# define GTHR_ACTIVE_PROXY	__gthrw_(__pthread_key_create)
+#elif defined (__BIONIC__)
+# define GTHR_ACTIVE_PROXY	__gthrw_(pthread_create)
+#else
+# define GTHR_ACTIVE_PROXY	__gthrw_(pthread_cancel)
+#endif
+
+static inline int
+__gthread_active_p (void)
+{
+  static void *const __gthread_active_ptr
+    = __extension__ (void *) &GTHR_ACTIVE_PROXY;
+  return __gthread_active_ptr != 0;
+}
+
+#endif /* FreeBSD or Solaris */
+
+#else /* not SUPPORTS_WEAK */
+
+/* Similar to Solaris, HP-UX 11 for PA-RISC provides stubs for pthread
+   calls in shared flavors of the HP-UX C library.  Most of the stubs
+   have no functionality.  The details are described in the "libc cumulative
+   patch" for each subversion of HP-UX 11.  There are two special interfaces
+   provided for checking whether an application is linked to a shared pthread
+   library or not.  However, these interfaces aren't available in early
+   libpthread libraries.  We also need a test that works for archive
+   libraries.  We can't use pthread_once as some libc versions call the
+   init function.  We also can't use pthread_create or pthread_attr_init
+   as these create a thread and thereby prevent changing the default stack
+   size.  The function pthread_default_stacksize_np is available in both
+   the archive and shared versions of libpthread.   It can be used to
+   determine the default pthread stack size.  There is a stub in some
+   shared libc versions which returns a zero size if pthreads are not
+   active.  We provide an equivalent stub to handle cases where libc
+   doesn't provide one.  */
+
+#if defined(__hppa__) && defined(__hpux__)
+
+static volatile int __gthread_active = -1;
+
+static inline int
+__gthread_active_p (void)
+{
+  /* Avoid reading __gthread_active twice on the main code path.  */
+  int __gthread_active_latest_value = __gthread_active;
+  size_t __s;
+
+  if (__builtin_expect (__gthread_active_latest_value < 0, 0))
+    {
+      pthread_default_stacksize_np (0, &__s);
+      __gthread_active = __s ? 1 : 0;
+      __gthread_active_latest_value = __gthread_active;
+    }
+
+  return __gthread_active_latest_value != 0;
+}
+
+#else /* not hppa-hpux */
+
+static inline int
+__gthread_active_p (void)
+{
+  return 1;
+}
+
+#endif /* hppa-hpux */
+
+#endif /* SUPPORTS_WEAK */
+
+#ifdef _LIBOBJC
+
+/* This is the config.h file in libobjc/ */
+#include <config.h>
+
+#ifdef HAVE_SCHED_H
+# include <sched.h>
+#endif
+
+/* Key structure for maintaining thread specific storage */
+static pthread_key_t _objc_thread_storage;
+static pthread_attr_t _objc_thread_attribs;
+
+/* Thread local storage for a single thread */
+static void *thread_local_storage = NULL;
+
+/* Backend initialization functions */
+
+/* Initialize the threads subsystem.  */
+static inline int
+__gthread_objc_init_thread_system (void)
+{
+  if (__gthread_active_p ())
+    {
+      /* Initialize the thread storage key.  */
+      if (__gthrw_(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 (__gthrw_(pthread_attr_init) (&_objc_thread_attribs) == 0
+	      && __gthrw_(pthread_attr_setdetachstate) (&_objc_thread_attribs,
+					      PTHREAD_CREATE_DETACHED) == 0)
+	    return 0;
+	}
+    }
+
+  return -1;
+}
+
+/* Close the threads subsystem.  */
+static inline int
+__gthread_objc_close_thread_system (void)
+{
+  if (__gthread_active_p ()
+      && __gthrw_(pthread_key_delete) (_objc_thread_storage) == 0
+      && __gthrw_(pthread_attr_destroy) (&_objc_thread_attribs) == 0)
+    return 0;
+
+  return -1;
+}
+
+/* Backend thread functions */
+
+/* Create a new thread of execution.  */
+static inline objc_thread_t
+__gthread_objc_thread_detach (void (*func)(void *), void *arg)
+{
+  objc_thread_t thread_id;
+  pthread_t new_thread_handle;
+
+  if (!__gthread_active_p ())
+    return NULL;
+
+  if (!(__gthrw_(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.  */
+static inline int
+__gthread_objc_thread_set_priority (int priority)
+{
+  if (!__gthread_active_p ())
+    return -1;
+  else
+    {
+#ifdef _POSIX_PRIORITY_SCHEDULING
+#ifdef _POSIX_THREAD_PRIORITY_SCHEDULING
+      pthread_t thread_id = __gthrw_(pthread_self) ();
+      int policy;
+      struct sched_param params;
+      int priority_min, priority_max;
+
+      if (__gthrw_(pthread_getschedparam) (thread_id, &policy, &params) == 0)
+	{
+	  if ((priority_max = __gthrw_(sched_get_priority_max) (policy)) == -1)
+	    return -1;
+
+	  if ((priority_min = __gthrw_(sched_get_priority_min) (policy)) == -1)
+	    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 (__gthrw_(pthread_setschedparam) (thread_id, policy, &params) == 0)
+	    return 0;
+	}
+#endif /* _POSIX_THREAD_PRIORITY_SCHEDULING */
+#endif /* _POSIX_PRIORITY_SCHEDULING */
+      return -1;
+    }
+}
+
+/* Return the current thread's priority.  */
+static inline int
+__gthread_objc_thread_get_priority (void)
+{
+#ifdef _POSIX_PRIORITY_SCHEDULING
+#ifdef _POSIX_THREAD_PRIORITY_SCHEDULING
+  if (__gthread_active_p ())
+    {
+      int policy;
+      struct sched_param params;
+
+      if (__gthrw_(pthread_getschedparam) (__gthrw_(pthread_self) (), &policy, &params) == 0)
+	return params.sched_priority;
+      else
+	return -1;
+    }
+  else
+#endif /* _POSIX_THREAD_PRIORITY_SCHEDULING */
+#endif /* _POSIX_PRIORITY_SCHEDULING */
+    return OBJC_THREAD_INTERACTIVE_PRIORITY;
+}
+
+/* Yield our process time to another thread.  */
+static inline void
+__gthread_objc_thread_yield (void)
+{
+  if (__gthread_active_p ())
+    __gthrw_(sched_yield) ();
+}
+
+/* Terminate the current thread.  */
+static inline int
+__gthread_objc_thread_exit (void)
+{
+  if (__gthread_active_p ())
+    /* exit the thread */
+    __gthrw_(pthread_exit) (&__objc_thread_exit_status);
+
+  /* Failed if we reached here */
+  return -1;
+}
+
+/* Returns an integer value which uniquely describes a thread.  */
+static inline objc_thread_t
+__gthread_objc_thread_id (void)
+{
+  if (__gthread_active_p ())
+    return (objc_thread_t) __gthrw_(pthread_self) ();
+  else
+    return (objc_thread_t) 1;
+}
+
+/* Sets the thread's local storage pointer.  */
+static inline int
+__gthread_objc_thread_set_data (void *value)
+{
+  if (__gthread_active_p ())
+    return __gthrw_(pthread_setspecific) (_objc_thread_storage, value);
+  else
+    {
+      thread_local_storage = value;
+      return 0;
+    }
+}
+
+/* Returns the thread's local storage pointer.  */
+static inline void *
+__gthread_objc_thread_get_data (void)
+{
+  if (__gthread_active_p ())
+    return __gthrw_(pthread_getspecific) (_objc_thread_storage);
+  else
+    return thread_local_storage;
+}
+
+/* Backend mutex functions */
+
+/* Allocate a mutex.  */
+static inline int
+__gthread_objc_mutex_allocate (objc_mutex_t mutex)
+{
+  if (__gthread_active_p ())
+    {
+      mutex->backend = objc_malloc (sizeof (pthread_mutex_t));
+
+      if (__gthrw_(pthread_mutex_init) ((pthread_mutex_t *) mutex->backend, NULL))
+	{
+	  objc_free (mutex->backend);
+	  mutex->backend = NULL;
+	  return -1;
+	}
+    }
+
+  return 0;
+}
+
+/* Deallocate a mutex.  */
+static inline int
+__gthread_objc_mutex_deallocate (objc_mutex_t mutex)
+{
+  if (__gthread_active_p ())
+    {
+      int count;
+
+      /*
+       * Posix Threads specifically require that the thread be unlocked
+       * for __gthrw_(pthread_mutex_destroy) to work.
+       */
+
+      do
+	{
+	  count = __gthrw_(pthread_mutex_unlock) ((pthread_mutex_t *) mutex->backend);
+	  if (count < 0)
+	    return -1;
+	}
+      while (count);
+
+      if (__gthrw_(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.  */
+static inline int
+__gthread_objc_mutex_lock (objc_mutex_t mutex)
+{
+  if (__gthread_active_p ()
+      && __gthrw_(pthread_mutex_lock) ((pthread_mutex_t *) mutex->backend) != 0)
+    {
+      return -1;
+    }
+
+  return 0;
+}
+
+/* Try to grab a lock on a mutex.  */
+static inline int
+__gthread_objc_mutex_trylock (objc_mutex_t mutex)
+{
+  if (__gthread_active_p ()
+      && __gthrw_(pthread_mutex_trylock) ((pthread_mutex_t *) mutex->backend) != 0)
+    {
+      return -1;
+    }
+
+  return 0;
+}
+
+/* Unlock the mutex */
+static inline int
+__gthread_objc_mutex_unlock (objc_mutex_t mutex)
+{
+  if (__gthread_active_p ()
+      && __gthrw_(pthread_mutex_unlock) ((pthread_mutex_t *) mutex->backend) != 0)
+    {
+      return -1;
+    }
+
+  return 0;
+}
+
+/* Backend condition mutex functions */
+
+/* Allocate a condition.  */
+static inline int
+__gthread_objc_condition_allocate (objc_condition_t condition)
+{
+  if (__gthread_active_p ())
+    {
+      condition->backend = objc_malloc (sizeof (pthread_cond_t));
+
+      if (__gthrw_(pthread_cond_init) ((pthread_cond_t *) condition->backend, NULL))
+	{
+	  objc_free (condition->backend);
+	  condition->backend = NULL;
+	  return -1;
+	}
+    }
+
+  return 0;
+}
+
+/* Deallocate a condition.  */
+static inline int
+__gthread_objc_condition_deallocate (objc_condition_t condition)
+{
+  if (__gthread_active_p ())
+    {
+      if (__gthrw_(pthread_cond_destroy) ((pthread_cond_t *) condition->backend))
+	return -1;
+
+      objc_free (condition->backend);
+      condition->backend = NULL;
+    }
+  return 0;
+}
+
+/* Wait on the condition */
+static inline int
+__gthread_objc_condition_wait (objc_condition_t condition, objc_mutex_t mutex)
+{
+  if (__gthread_active_p ())
+    return __gthrw_(pthread_cond_wait) ((pthread_cond_t *) condition->backend,
+			      (pthread_mutex_t *) mutex->backend);
+  else
+    return 0;
+}
+
+/* Wake up all threads waiting on this condition.  */
+static inline int
+__gthread_objc_condition_broadcast (objc_condition_t condition)
+{
+  if (__gthread_active_p ())
+    return __gthrw_(pthread_cond_broadcast) ((pthread_cond_t *) condition->backend);
+  else
+    return 0;
+}
+
+/* Wake up one thread waiting on this condition.  */
+static inline int
+__gthread_objc_condition_signal (objc_condition_t condition)
+{
+  if (__gthread_active_p ())
+    return __gthrw_(pthread_cond_signal) ((pthread_cond_t *) condition->backend);
+  else
+    return 0;
+}
+
+#else /* _LIBOBJC */
+
+static inline int
+__gthread_create (__gthread_t *__threadid, void *(*__func) (void*),
+		  void *__args)
+{
+  return __gthrw_(pthread_create) (__threadid, NULL, __func, __args);
+}
+
+static inline int
+__gthread_join (__gthread_t __threadid, void **__value_ptr)
+{
+  return __gthrw_(pthread_join) (__threadid, __value_ptr);
+}
+
+static inline int
+__gthread_detach (__gthread_t __threadid)
+{
+  return __gthrw_(pthread_detach) (__threadid);
+}
+
+static inline int
+__gthread_equal (__gthread_t __t1, __gthread_t __t2)
+{
+  return __gthrw_(pthread_equal) (__t1, __t2);
+}
+
+static inline __gthread_t
+__gthread_self (void)
+{
+  return __gthrw_(pthread_self) ();
+}
+
+static inline int
+__gthread_yield (void)
+{
+  return __gthrw_(sched_yield) ();
+}
+
+static inline int
+__gthread_once (__gthread_once_t *__once, void (*__func) (void))
+{
+  if (__gthread_active_p ())
+    return __gthrw_(pthread_once) (__once, __func);
+  else
+    return -1;
+}
+
+static inline int
+__gthread_key_create (__gthread_key_t *__key, void (*__dtor) (void *))
+{
+  return __gthrw_(pthread_key_create) (__key, __dtor);
+}
+
+static inline int
+__gthread_key_delete (__gthread_key_t __key)
+{
+  return __gthrw_(pthread_key_delete) (__key);
+}
+
+static inline void *
+__gthread_getspecific (__gthread_key_t __key)
+{
+  return __gthrw_(pthread_getspecific) (__key);
+}
+
+static inline int
+__gthread_setspecific (__gthread_key_t __key, const void *__ptr)
+{
+  return __gthrw_(pthread_setspecific) (__key, __ptr);
+}
+
+static inline void
+__gthread_mutex_init_function (__gthread_mutex_t *__mutex)
+{
+  if (__gthread_active_p ())
+    __gthrw_(pthread_mutex_init) (__mutex, NULL);
+}
+
+static inline int
+__gthread_mutex_destroy (__gthread_mutex_t *__mutex)
+{
+  if (__gthread_active_p ())
+    return __gthrw_(pthread_mutex_destroy) (__mutex);
+  else
+    return 0;
+}
+
+static inline int
+__gthread_mutex_lock (__gthread_mutex_t *__mutex)
+{
+  if (__gthread_active_p ())
+    return __gthrw_(pthread_mutex_lock) (__mutex);
+  else
+    return 0;
+}
+
+static inline int
+__gthread_mutex_trylock (__gthread_mutex_t *__mutex)
+{
+  if (__gthread_active_p ())
+    return __gthrw_(pthread_mutex_trylock) (__mutex);
+  else
+    return 0;
+}
+
+#if _GTHREAD_USE_MUTEX_TIMEDLOCK
+static inline int
+__gthread_mutex_timedlock (__gthread_mutex_t *__mutex,
+			   const __gthread_time_t *__abs_timeout)
+{
+  if (__gthread_active_p ())
+    return __gthrw_(pthread_mutex_timedlock) (__mutex, __abs_timeout);
+  else
+    return 0;
+}
+#endif
+
+static inline int
+__gthread_mutex_unlock (__gthread_mutex_t *__mutex)
+{
+  if (__gthread_active_p ())
+    return __gthrw_(pthread_mutex_unlock) (__mutex);
+  else
+    return 0;
+}
+
+#if !defined( PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP) \
+  || defined(_GTHREAD_USE_RECURSIVE_MUTEX_INIT_FUNC)
+static inline int
+__gthread_recursive_mutex_init_function (__gthread_recursive_mutex_t *__mutex)
+{
+  if (__gthread_active_p ())
+    {
+      pthread_mutexattr_t __attr;
+      int __r;
+
+      __r = __gthrw_(pthread_mutexattr_init) (&__attr);
+      if (!__r)
+	__r = __gthrw_(pthread_mutexattr_settype) (&__attr,
+						   PTHREAD_MUTEX_RECURSIVE);
+      if (!__r)
+	__r = __gthrw_(pthread_mutex_init) (__mutex, &__attr);
+      if (!__r)
+	__r = __gthrw_(pthread_mutexattr_destroy) (&__attr);
+      return __r;
+    }
+  return 0;
+}
+#endif
+
+static inline int
+__gthread_recursive_mutex_lock (__gthread_recursive_mutex_t *__mutex)
+{
+  return __gthread_mutex_lock (__mutex);
+}
+
+static inline int
+__gthread_recursive_mutex_trylock (__gthread_recursive_mutex_t *__mutex)
+{
+  return __gthread_mutex_trylock (__mutex);
+}
+
+#if _GTHREAD_USE_MUTEX_TIMEDLOCK
+static inline int
+__gthread_recursive_mutex_timedlock (__gthread_recursive_mutex_t *__mutex,
+				     const __gthread_time_t *__abs_timeout)
+{
+  return __gthread_mutex_timedlock (__mutex, __abs_timeout);
+}
+#endif
+
+static inline int
+__gthread_recursive_mutex_unlock (__gthread_recursive_mutex_t *__mutex)
+{
+  return __gthread_mutex_unlock (__mutex);
+}
+
+static inline int
+__gthread_recursive_mutex_destroy (__gthread_recursive_mutex_t *__mutex)
+{
+  return __gthread_mutex_destroy (__mutex);
+}
+
+#ifdef _GTHREAD_USE_COND_INIT_FUNC
+static inline void
+__gthread_cond_init_function (__gthread_cond_t *__cond)
+{
+  if (__gthread_active_p ())
+    __gthrw_(pthread_cond_init) (__cond, NULL);
+}
+#endif
+
+static inline int
+__gthread_cond_broadcast (__gthread_cond_t *__cond)
+{
+  return __gthrw_(pthread_cond_broadcast) (__cond);
+}
+
+static inline int
+__gthread_cond_signal (__gthread_cond_t *__cond)
+{
+  return __gthrw_(pthread_cond_signal) (__cond);
+}
+
+static inline int
+__gthread_cond_wait (__gthread_cond_t *__cond, __gthread_mutex_t *__mutex)
+{
+  return __gthrw_(pthread_cond_wait) (__cond, __mutex);
+}
+
+static inline int
+__gthread_cond_timedwait (__gthread_cond_t *__cond, __gthread_mutex_t *__mutex,
+			  const __gthread_time_t *__abs_timeout)
+{
+  return __gthrw_(pthread_cond_timedwait) (__cond, __mutex, __abs_timeout);
+}
+
+static inline int
+__gthread_cond_wait_recursive (__gthread_cond_t *__cond,
+			       __gthread_recursive_mutex_t *__mutex)
+{
+  return __gthread_cond_wait (__cond, __mutex);
+}
+
+static inline int
+__gthread_cond_destroy (__gthread_cond_t* __cond)
+{
+  return __gthrw_(pthread_cond_destroy) (__cond);
+}
+
+#endif /* _LIBOBJC */
+
+#endif /* ! GCC_GTHR_POSIX_H */