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[/] [openrisc/] [trunk/] [gnu-stable/] [gcc-4.5.1/] [gcc/] [gthr-posix95.h] - Diff between revs 816 and 826

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/* Threads compatibility routines for libgcc2 and libobjc.  */
/* Threads compatibility routines for libgcc2 and libobjc.  */
/* Compile this one with gcc.  */
/* Compile this one with gcc.  */
/* Copyright (C) 2004, 2005, 2007, 2008, 2009 Free Software Foundation, Inc.
/* Copyright (C) 2004, 2005, 2007, 2008, 2009 Free Software Foundation, Inc.
 
 
This file is part of GCC.
This file is part of GCC.
 
 
GCC is free software; you can redistribute it and/or modify it under
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
the terms of the GNU General Public License as published by the Free
Software Foundation; either version 3, or (at your option) any later
Software Foundation; either version 3, or (at your option) any later
version.
version.
 
 
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
for more details.
for more details.
 
 
Under Section 7 of GPL version 3, you are granted additional
Under Section 7 of GPL version 3, you are granted additional
permissions described in the GCC Runtime Library Exception, version
permissions described in the GCC Runtime Library Exception, version
3.1, as published by the Free Software Foundation.
3.1, as published by the Free Software Foundation.
 
 
You should have received a copy of the GNU General Public License and
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;
a copy of the GCC Runtime Library Exception along with this program;
see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
<http://www.gnu.org/licenses/>.  */
<http://www.gnu.org/licenses/>.  */
 
 
#ifndef GCC_GTHR_POSIX_H
#ifndef GCC_GTHR_POSIX_H
#define GCC_GTHR_POSIX_H
#define GCC_GTHR_POSIX_H
 
 
/* POSIX threads specific definitions.
/* POSIX threads specific definitions.
   Easy, since the interface is just one-to-one mapping.  */
   Easy, since the interface is just one-to-one mapping.  */
 
 
#define __GTHREADS 1
#define __GTHREADS 1
 
 
/* Some implementations of <pthread.h> require this to be defined.  */
/* Some implementations of <pthread.h> require this to be defined.  */
#ifndef _REENTRANT
#ifndef _REENTRANT
#define _REENTRANT 1
#define _REENTRANT 1
#endif
#endif
 
 
#include <pthread.h>
#include <pthread.h>
#include <unistd.h>
#include <unistd.h>
 
 
typedef pthread_key_t __gthread_key_t;
typedef pthread_key_t __gthread_key_t;
typedef pthread_once_t __gthread_once_t;
typedef pthread_once_t __gthread_once_t;
typedef pthread_mutex_t __gthread_mutex_t;
typedef pthread_mutex_t __gthread_mutex_t;
typedef pthread_cond_t __gthread_cond_t;
typedef pthread_cond_t __gthread_cond_t;
 
 
/* POSIX like conditional variables are supported.  Please look at comments
/* POSIX like conditional variables are supported.  Please look at comments
   in gthr.h for details. */
   in gthr.h for details. */
#define __GTHREAD_HAS_COND      1
#define __GTHREAD_HAS_COND      1
 
 
typedef struct {
typedef struct {
  long depth;
  long depth;
  pthread_t owner;
  pthread_t owner;
  pthread_mutex_t actual;
  pthread_mutex_t actual;
} __gthread_recursive_mutex_t;
} __gthread_recursive_mutex_t;
 
 
#define __GTHREAD_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
#define __GTHREAD_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
#define __GTHREAD_ONCE_INIT PTHREAD_ONCE_INIT
#define __GTHREAD_ONCE_INIT PTHREAD_ONCE_INIT
#define __GTHREAD_RECURSIVE_MUTEX_INIT_FUNCTION __gthread_recursive_mutex_init_function
#define __GTHREAD_RECURSIVE_MUTEX_INIT_FUNCTION __gthread_recursive_mutex_init_function
#define __GTHREAD_COND_INIT PTHREAD_COND_INITIALIZER
#define __GTHREAD_COND_INIT PTHREAD_COND_INITIALIZER
 
 
#if SUPPORTS_WEAK && GTHREAD_USE_WEAK
#if SUPPORTS_WEAK && GTHREAD_USE_WEAK
# define __gthrw(name) \
# define __gthrw(name) \
  static __typeof(name) __gthrw_ ## name __attribute__ ((__weakref__(#name)));
  static __typeof(name) __gthrw_ ## name __attribute__ ((__weakref__(#name)));
# define __gthrw_(name) __gthrw_ ## name
# define __gthrw_(name) __gthrw_ ## name
#else
#else
# define __gthrw(name)
# define __gthrw(name)
# define __gthrw_(name) name
# define __gthrw_(name) name
#endif
#endif
 
 
__gthrw(pthread_once)
__gthrw(pthread_once)
__gthrw(pthread_key_create)
__gthrw(pthread_key_create)
__gthrw(pthread_key_delete)
__gthrw(pthread_key_delete)
__gthrw(pthread_getspecific)
__gthrw(pthread_getspecific)
__gthrw(pthread_setspecific)
__gthrw(pthread_setspecific)
__gthrw(pthread_create)
__gthrw(pthread_create)
__gthrw(pthread_cancel)
__gthrw(pthread_cancel)
__gthrw(pthread_self)
__gthrw(pthread_self)
 
 
__gthrw(pthread_mutex_init)
__gthrw(pthread_mutex_init)
__gthrw(pthread_mutex_destroy)
__gthrw(pthread_mutex_destroy)
__gthrw(pthread_mutex_lock)
__gthrw(pthread_mutex_lock)
__gthrw(pthread_mutex_trylock)
__gthrw(pthread_mutex_trylock)
__gthrw(pthread_mutex_unlock)
__gthrw(pthread_mutex_unlock)
__gthrw(pthread_mutexattr_init)
__gthrw(pthread_mutexattr_init)
__gthrw(pthread_mutexattr_destroy)
__gthrw(pthread_mutexattr_destroy)
 
 
__gthrw(pthread_cond_broadcast)
__gthrw(pthread_cond_broadcast)
__gthrw(pthread_cond_wait)
__gthrw(pthread_cond_wait)
 
 
#if defined(_LIBOBJC) || defined(_LIBOBJC_WEAK)
#if defined(_LIBOBJC) || defined(_LIBOBJC_WEAK)
/* Objective-C.  */
/* Objective-C.  */
__gthrw(pthread_cond_destroy)
__gthrw(pthread_cond_destroy)
__gthrw(pthread_cond_init)
__gthrw(pthread_cond_init)
__gthrw(pthread_cond_signal)
__gthrw(pthread_cond_signal)
__gthrw(pthread_exit)
__gthrw(pthread_exit)
#ifdef _POSIX_PRIORITY_SCHEDULING
#ifdef _POSIX_PRIORITY_SCHEDULING
#ifdef _POSIX_THREAD_PRIORITY_SCHEDULING
#ifdef _POSIX_THREAD_PRIORITY_SCHEDULING
__gthrw(sched_get_priority_max)
__gthrw(sched_get_priority_max)
__gthrw(sched_get_priority_min)
__gthrw(sched_get_priority_min)
#endif /* _POSIX_THREAD_PRIORITY_SCHEDULING */
#endif /* _POSIX_THREAD_PRIORITY_SCHEDULING */
#endif /* _POSIX_PRIORITY_SCHEDULING */
#endif /* _POSIX_PRIORITY_SCHEDULING */
__gthrw(sched_yield)
__gthrw(sched_yield)
__gthrw(pthread_attr_destroy)
__gthrw(pthread_attr_destroy)
__gthrw(pthread_attr_init)
__gthrw(pthread_attr_init)
__gthrw(pthread_attr_setdetachstate)
__gthrw(pthread_attr_setdetachstate)
#ifdef _POSIX_THREAD_PRIORITY_SCHEDULING
#ifdef _POSIX_THREAD_PRIORITY_SCHEDULING
__gthrw(pthread_getschedparam)
__gthrw(pthread_getschedparam)
__gthrw(pthread_setschedparam)
__gthrw(pthread_setschedparam)
#endif /* _POSIX_THREAD_PRIORITY_SCHEDULING */
#endif /* _POSIX_THREAD_PRIORITY_SCHEDULING */
#endif /* _LIBOBJC || _LIBOBJC_WEAK */
#endif /* _LIBOBJC || _LIBOBJC_WEAK */
 
 
#if SUPPORTS_WEAK && GTHREAD_USE_WEAK
#if SUPPORTS_WEAK && GTHREAD_USE_WEAK
 
 
/* On Solaris 2.6 up to 9, the libc exposes a POSIX threads interface even if
/* 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
   -pthreads is not specified.  The functions are dummies and most return an
   error value.  However pthread_once returns 0 without invoking the routine
   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
   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
   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
   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
   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
   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,
   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.  */
   which means the alternate __gthread_active_p below cannot be used there.  */
 
 
#if defined(__FreeBSD__) || (defined(__sun) && defined(__svr4__))
#if defined(__FreeBSD__) || (defined(__sun) && defined(__svr4__))
 
 
static volatile int __gthread_active = -1;
static volatile int __gthread_active = -1;
 
 
static void
static void
__gthread_trigger (void)
__gthread_trigger (void)
{
{
  __gthread_active = 1;
  __gthread_active = 1;
}
}
 
 
static inline int
static inline int
__gthread_active_p (void)
__gthread_active_p (void)
{
{
  static pthread_mutex_t __gthread_active_mutex = PTHREAD_MUTEX_INITIALIZER;
  static pthread_mutex_t __gthread_active_mutex = PTHREAD_MUTEX_INITIALIZER;
  static pthread_once_t __gthread_active_once = PTHREAD_ONCE_INIT;
  static pthread_once_t __gthread_active_once = PTHREAD_ONCE_INIT;
 
 
  /* Avoid reading __gthread_active twice on the main code path.  */
  /* Avoid reading __gthread_active twice on the main code path.  */
  int __gthread_active_latest_value = __gthread_active;
  int __gthread_active_latest_value = __gthread_active;
 
 
  /* This test is not protected to avoid taking a lock on the main code
  /* 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
     path so every update of __gthread_active in a threaded program must
     be atomic with regard to the result of the test.  */
     be atomic with regard to the result of the test.  */
  if (__builtin_expect (__gthread_active_latest_value < 0, 0))
  if (__builtin_expect (__gthread_active_latest_value < 0, 0))
    {
    {
      if (__gthrw_(pthread_once))
      if (__gthrw_(pthread_once))
        {
        {
          /* If this really is a threaded program, then we must ensure that
          /* If this really is a threaded program, then we must ensure that
             __gthread_active has been set to 1 before exiting this block.  */
             __gthread_active has been set to 1 before exiting this block.  */
          __gthrw_(pthread_mutex_lock) (&__gthread_active_mutex);
          __gthrw_(pthread_mutex_lock) (&__gthread_active_mutex);
          __gthrw_(pthread_once) (&__gthread_active_once, __gthread_trigger);
          __gthrw_(pthread_once) (&__gthread_active_once, __gthread_trigger);
          __gthrw_(pthread_mutex_unlock) (&__gthread_active_mutex);
          __gthrw_(pthread_mutex_unlock) (&__gthread_active_mutex);
        }
        }
 
 
      /* Make sure we'll never enter this block again.  */
      /* Make sure we'll never enter this block again.  */
      if (__gthread_active < 0)
      if (__gthread_active < 0)
        __gthread_active = 0;
        __gthread_active = 0;
 
 
      __gthread_active_latest_value = __gthread_active;
      __gthread_active_latest_value = __gthread_active;
    }
    }
 
 
  return __gthread_active_latest_value != 0;
  return __gthread_active_latest_value != 0;
}
}
 
 
#else /* neither FreeBSD nor Solaris */
#else /* neither FreeBSD nor Solaris */
 
 
static inline int
static inline int
__gthread_active_p (void)
__gthread_active_p (void)
{
{
  static void *const __gthread_active_ptr
  static void *const __gthread_active_ptr
    = __extension__ (void *) &__gthrw_(pthread_cancel);
    = __extension__ (void *) &__gthrw_(pthread_cancel);
  return __gthread_active_ptr != 0;
  return __gthread_active_ptr != 0;
}
}
 
 
#endif /* FreeBSD or Solaris */
#endif /* FreeBSD or Solaris */
 
 
#else /* not SUPPORTS_WEAK */
#else /* not SUPPORTS_WEAK */
 
 
/* Similar to Solaris, HP-UX 11 for PA-RISC provides stubs for pthread
/* 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
   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
   have no functionality.  The details are described in the "libc cumulative
   patch" for each subversion of HP-UX 11.  There are two special interfaces
   patch" for each subversion of HP-UX 11.  There are two special interfaces
   provided for checking whether an application is linked to a pthread
   provided for checking whether an application is linked to a pthread
   library or not.  However, these interfaces aren't available in early
   library or not.  However, these interfaces aren't available in early
   libc versions.  We also can't use pthread_once as some libc versions
   libc versions.  We also can't use pthread_once as some libc versions
   call the init function.  So, we use pthread_create to check whether it
   call the init function.  So, we use pthread_create to check whether it
   is possible to create a thread or not.  The stub implementation returns
   is possible to create a thread or not.  The stub implementation returns
   the error number ENOSYS.  */
   the error number ENOSYS.  */
 
 
#if defined(__hppa__) && defined(__hpux__)
#if defined(__hppa__) && defined(__hpux__)
 
 
#include <errno.h>
#include <errno.h>
 
 
static volatile int __gthread_active = -1;
static volatile int __gthread_active = -1;
 
 
static void *
static void *
__gthread_start (void *arg __attribute__((unused)))
__gthread_start (void *arg __attribute__((unused)))
{
{
  return NULL;
  return NULL;
}
}
 
 
static void __gthread_active_init (void) __attribute__((noinline));
static void __gthread_active_init (void) __attribute__((noinline));
static void
static void
__gthread_active_init (void)
__gthread_active_init (void)
{
{
  static pthread_mutex_t __gthread_active_mutex = PTHREAD_MUTEX_INITIALIZER;
  static pthread_mutex_t __gthread_active_mutex = PTHREAD_MUTEX_INITIALIZER;
  pthread_t t;
  pthread_t t;
  pthread_attr_t a;
  pthread_attr_t a;
  int result;
  int result;
 
 
  __gthrw_(pthread_mutex_lock) (&__gthread_active_mutex);
  __gthrw_(pthread_mutex_lock) (&__gthread_active_mutex);
  if (__gthread_active < 0)
  if (__gthread_active < 0)
    {
    {
      __gthrw_(pthread_attr_init) (&a);
      __gthrw_(pthread_attr_init) (&a);
      __gthrw_(pthread_attr_setdetachstate) (&a, PTHREAD_CREATE_DETACHED);
      __gthrw_(pthread_attr_setdetachstate) (&a, PTHREAD_CREATE_DETACHED);
      result = __gthrw_(pthread_create) (&t, &a, __gthread_start, NULL);
      result = __gthrw_(pthread_create) (&t, &a, __gthread_start, NULL);
      if (result != ENOSYS)
      if (result != ENOSYS)
        __gthread_active = 1;
        __gthread_active = 1;
      else
      else
        __gthread_active = 0;
        __gthread_active = 0;
      __gthrw_(pthread_attr_destroy) (&a);
      __gthrw_(pthread_attr_destroy) (&a);
    }
    }
  __gthrw_(pthread_mutex_unlock) (&__gthread_active_mutex);
  __gthrw_(pthread_mutex_unlock) (&__gthread_active_mutex);
}
}
 
 
static inline int
static inline int
__gthread_active_p (void)
__gthread_active_p (void)
{
{
  /* Avoid reading __gthread_active twice on the main code path.  */
  /* Avoid reading __gthread_active twice on the main code path.  */
  int __gthread_active_latest_value = __gthread_active;
  int __gthread_active_latest_value = __gthread_active;
 
 
  /* This test is not protected to avoid taking a lock on the main code
  /* 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
     path so every update of __gthread_active in a threaded program must
     be atomic with regard to the result of the test.  */
     be atomic with regard to the result of the test.  */
  if (__builtin_expect (__gthread_active_latest_value < 0, 0))
  if (__builtin_expect (__gthread_active_latest_value < 0, 0))
    {
    {
      __gthread_active_init ();
      __gthread_active_init ();
      __gthread_active_latest_value = __gthread_active;
      __gthread_active_latest_value = __gthread_active;
    }
    }
 
 
  return __gthread_active_latest_value != 0;
  return __gthread_active_latest_value != 0;
}
}
 
 
#else /* not hppa-hpux */
#else /* not hppa-hpux */
 
 
static inline int
static inline int
__gthread_active_p (void)
__gthread_active_p (void)
{
{
  return 1;
  return 1;
}
}
 
 
#endif /* hppa-hpux */
#endif /* hppa-hpux */
 
 
#endif /* SUPPORTS_WEAK */
#endif /* SUPPORTS_WEAK */
 
 
#ifdef _LIBOBJC
#ifdef _LIBOBJC
 
 
/* This is the config.h file in libobjc/ */
/* This is the config.h file in libobjc/ */
#include <config.h>
#include <config.h>
 
 
#ifdef HAVE_SCHED_H
#ifdef HAVE_SCHED_H
# include <sched.h>
# include <sched.h>
#endif
#endif
 
 
/* Key structure for maintaining thread specific storage */
/* Key structure for maintaining thread specific storage */
static pthread_key_t _objc_thread_storage;
static pthread_key_t _objc_thread_storage;
static pthread_attr_t _objc_thread_attribs;
static pthread_attr_t _objc_thread_attribs;
 
 
/* Thread local storage for a single thread */
/* Thread local storage for a single thread */
static void *thread_local_storage = NULL;
static void *thread_local_storage = NULL;
 
 
/* Backend initialization functions */
/* Backend initialization functions */
 
 
/* Initialize the threads subsystem.  */
/* Initialize the threads subsystem.  */
static inline int
static inline int
__gthread_objc_init_thread_system (void)
__gthread_objc_init_thread_system (void)
{
{
  if (__gthread_active_p ())
  if (__gthread_active_p ())
    {
    {
      /* Initialize the thread storage key.  */
      /* Initialize the thread storage key.  */
      if (__gthrw_(pthread_key_create) (&_objc_thread_storage, NULL) == 0)
      if (__gthrw_(pthread_key_create) (&_objc_thread_storage, NULL) == 0)
        {
        {
          /* The normal default detach state for threads is
          /* The normal default detach state for threads is
           * PTHREAD_CREATE_JOINABLE which causes threads to not die
           * PTHREAD_CREATE_JOINABLE which causes threads to not die
           * when you think they should.  */
           * when you think they should.  */
          if (__gthrw_(pthread_attr_init) (&_objc_thread_attribs) == 0
          if (__gthrw_(pthread_attr_init) (&_objc_thread_attribs) == 0
              && __gthrw_(pthread_attr_setdetachstate) (&_objc_thread_attribs,
              && __gthrw_(pthread_attr_setdetachstate) (&_objc_thread_attribs,
                                              PTHREAD_CREATE_DETACHED) == 0)
                                              PTHREAD_CREATE_DETACHED) == 0)
            return 0;
            return 0;
        }
        }
    }
    }
 
 
  return -1;
  return -1;
}
}
 
 
/* Close the threads subsystem.  */
/* Close the threads subsystem.  */
static inline int
static inline int
__gthread_objc_close_thread_system (void)
__gthread_objc_close_thread_system (void)
{
{
  if (__gthread_active_p ()
  if (__gthread_active_p ()
      && __gthrw_(pthread_key_delete) (_objc_thread_storage) == 0
      && __gthrw_(pthread_key_delete) (_objc_thread_storage) == 0
      && __gthrw_(pthread_attr_destroy) (&_objc_thread_attribs) == 0)
      && __gthrw_(pthread_attr_destroy) (&_objc_thread_attribs) == 0)
    return 0;
    return 0;
 
 
  return -1;
  return -1;
}
}
 
 
/* Backend thread functions */
/* Backend thread functions */
 
 
/* Create a new thread of execution.  */
/* Create a new thread of execution.  */
static inline objc_thread_t
static inline objc_thread_t
__gthread_objc_thread_detach (void (*func)(void *), void *arg)
__gthread_objc_thread_detach (void (*func)(void *), void *arg)
{
{
  objc_thread_t thread_id;
  objc_thread_t thread_id;
  pthread_t new_thread_handle;
  pthread_t new_thread_handle;
 
 
  if (!__gthread_active_p ())
  if (!__gthread_active_p ())
    return NULL;
    return NULL;
 
 
  if (!(__gthrw_(pthread_create) (&new_thread_handle, NULL, (void *) func, arg)))
  if (!(__gthrw_(pthread_create) (&new_thread_handle, NULL, (void *) func, arg)))
    thread_id = (objc_thread_t) new_thread_handle;
    thread_id = (objc_thread_t) new_thread_handle;
  else
  else
    thread_id = NULL;
    thread_id = NULL;
 
 
  return thread_id;
  return thread_id;
}
}
 
 
/* Set the current thread's priority.  */
/* Set the current thread's priority.  */
static inline int
static inline int
__gthread_objc_thread_set_priority (int priority)
__gthread_objc_thread_set_priority (int priority)
{
{
  if (!__gthread_active_p ())
  if (!__gthread_active_p ())
    return -1;
    return -1;
  else
  else
    {
    {
#ifdef _POSIX_PRIORITY_SCHEDULING
#ifdef _POSIX_PRIORITY_SCHEDULING
#ifdef _POSIX_THREAD_PRIORITY_SCHEDULING
#ifdef _POSIX_THREAD_PRIORITY_SCHEDULING
      pthread_t thread_id = __gthrw_(pthread_self) ();
      pthread_t thread_id = __gthrw_(pthread_self) ();
      int policy;
      int policy;
      struct sched_param params;
      struct sched_param params;
      int priority_min, priority_max;
      int priority_min, priority_max;
 
 
      if (__gthrw_(pthread_getschedparam) (thread_id, &policy, &params) == 0)
      if (__gthrw_(pthread_getschedparam) (thread_id, &policy, &params) == 0)
        {
        {
          if ((priority_max = __gthrw_(sched_get_priority_max) (policy)) == -1)
          if ((priority_max = __gthrw_(sched_get_priority_max) (policy)) == -1)
            return -1;
            return -1;
 
 
          if ((priority_min = __gthrw_(sched_get_priority_min) (policy)) == -1)
          if ((priority_min = __gthrw_(sched_get_priority_min) (policy)) == -1)
            return -1;
            return -1;
 
 
          if (priority > priority_max)
          if (priority > priority_max)
            priority = priority_max;
            priority = priority_max;
          else if (priority < priority_min)
          else if (priority < priority_min)
            priority = priority_min;
            priority = priority_min;
          params.sched_priority = priority;
          params.sched_priority = priority;
 
 
          /*
          /*
           * The solaris 7 and several other man pages incorrectly state that
           * The solaris 7 and several other man pages incorrectly state that
           * this should be a pointer to policy but pthread.h is universally
           * this should be a pointer to policy but pthread.h is universally
           * at odds with this.
           * at odds with this.
           */
           */
          if (__gthrw_(pthread_setschedparam) (thread_id, policy, &params) == 0)
          if (__gthrw_(pthread_setschedparam) (thread_id, policy, &params) == 0)
            return 0;
            return 0;
        }
        }
#endif /* _POSIX_THREAD_PRIORITY_SCHEDULING */
#endif /* _POSIX_THREAD_PRIORITY_SCHEDULING */
#endif /* _POSIX_PRIORITY_SCHEDULING */
#endif /* _POSIX_PRIORITY_SCHEDULING */
      return -1;
      return -1;
    }
    }
}
}
 
 
/* Return the current thread's priority.  */
/* Return the current thread's priority.  */
static inline int
static inline int
__gthread_objc_thread_get_priority (void)
__gthread_objc_thread_get_priority (void)
{
{
#ifdef _POSIX_PRIORITY_SCHEDULING
#ifdef _POSIX_PRIORITY_SCHEDULING
#ifdef _POSIX_THREAD_PRIORITY_SCHEDULING
#ifdef _POSIX_THREAD_PRIORITY_SCHEDULING
  if (__gthread_active_p ())
  if (__gthread_active_p ())
    {
    {
      int policy;
      int policy;
      struct sched_param params;
      struct sched_param params;
 
 
      if (__gthrw_(pthread_getschedparam) (__gthrw_(pthread_self) (), &policy, &params) == 0)
      if (__gthrw_(pthread_getschedparam) (__gthrw_(pthread_self) (), &policy, &params) == 0)
        return params.sched_priority;
        return params.sched_priority;
      else
      else
        return -1;
        return -1;
    }
    }
  else
  else
#endif /* _POSIX_THREAD_PRIORITY_SCHEDULING */
#endif /* _POSIX_THREAD_PRIORITY_SCHEDULING */
#endif /* _POSIX_PRIORITY_SCHEDULING */
#endif /* _POSIX_PRIORITY_SCHEDULING */
    return OBJC_THREAD_INTERACTIVE_PRIORITY;
    return OBJC_THREAD_INTERACTIVE_PRIORITY;
}
}
 
 
/* Yield our process time to another thread.  */
/* Yield our process time to another thread.  */
static inline void
static inline void
__gthread_objc_thread_yield (void)
__gthread_objc_thread_yield (void)
{
{
  if (__gthread_active_p ())
  if (__gthread_active_p ())
    __gthrw_(sched_yield) ();
    __gthrw_(sched_yield) ();
}
}
 
 
/* Terminate the current thread.  */
/* Terminate the current thread.  */
static inline int
static inline int
__gthread_objc_thread_exit (void)
__gthread_objc_thread_exit (void)
{
{
  if (__gthread_active_p ())
  if (__gthread_active_p ())
    /* exit the thread */
    /* exit the thread */
    __gthrw_(pthread_exit) (&__objc_thread_exit_status);
    __gthrw_(pthread_exit) (&__objc_thread_exit_status);
 
 
  /* Failed if we reached here */
  /* Failed if we reached here */
  return -1;
  return -1;
}
}
 
 
/* Returns an integer value which uniquely describes a thread.  */
/* Returns an integer value which uniquely describes a thread.  */
static inline objc_thread_t
static inline objc_thread_t
__gthread_objc_thread_id (void)
__gthread_objc_thread_id (void)
{
{
  if (__gthread_active_p ())
  if (__gthread_active_p ())
    return (objc_thread_t) __gthrw_(pthread_self) ();
    return (objc_thread_t) __gthrw_(pthread_self) ();
  else
  else
    return (objc_thread_t) 1;
    return (objc_thread_t) 1;
}
}
 
 
/* Sets the thread's local storage pointer.  */
/* Sets the thread's local storage pointer.  */
static inline int
static inline int
__gthread_objc_thread_set_data (void *value)
__gthread_objc_thread_set_data (void *value)
{
{
  if (__gthread_active_p ())
  if (__gthread_active_p ())
    return __gthrw_(pthread_setspecific) (_objc_thread_storage, value);
    return __gthrw_(pthread_setspecific) (_objc_thread_storage, value);
  else
  else
    {
    {
      thread_local_storage = value;
      thread_local_storage = value;
      return 0;
      return 0;
    }
    }
}
}
 
 
/* Returns the thread's local storage pointer.  */
/* Returns the thread's local storage pointer.  */
static inline void *
static inline void *
__gthread_objc_thread_get_data (void)
__gthread_objc_thread_get_data (void)
{
{
  if (__gthread_active_p ())
  if (__gthread_active_p ())
    return __gthrw_(pthread_getspecific) (_objc_thread_storage);
    return __gthrw_(pthread_getspecific) (_objc_thread_storage);
  else
  else
    return thread_local_storage;
    return thread_local_storage;
}
}
 
 
/* Backend mutex functions */
/* Backend mutex functions */
 
 
/* Allocate a mutex.  */
/* Allocate a mutex.  */
static inline int
static inline int
__gthread_objc_mutex_allocate (objc_mutex_t mutex)
__gthread_objc_mutex_allocate (objc_mutex_t mutex)
{
{
  if (__gthread_active_p ())
  if (__gthread_active_p ())
    {
    {
      mutex->backend = objc_malloc (sizeof (pthread_mutex_t));
      mutex->backend = objc_malloc (sizeof (pthread_mutex_t));
 
 
      if (__gthrw_(pthread_mutex_init) ((pthread_mutex_t *) mutex->backend, NULL))
      if (__gthrw_(pthread_mutex_init) ((pthread_mutex_t *) mutex->backend, NULL))
        {
        {
          objc_free (mutex->backend);
          objc_free (mutex->backend);
          mutex->backend = NULL;
          mutex->backend = NULL;
          return -1;
          return -1;
        }
        }
    }
    }
 
 
  return 0;
  return 0;
}
}
 
 
/* Deallocate a mutex.  */
/* Deallocate a mutex.  */
static inline int
static inline int
__gthread_objc_mutex_deallocate (objc_mutex_t mutex)
__gthread_objc_mutex_deallocate (objc_mutex_t mutex)
{
{
  if (__gthread_active_p ())
  if (__gthread_active_p ())
    {
    {
      int count;
      int count;
 
 
      /*
      /*
       * Posix Threads specifically require that the thread be unlocked
       * Posix Threads specifically require that the thread be unlocked
       * for __gthrw_(pthread_mutex_destroy) to work.
       * for __gthrw_(pthread_mutex_destroy) to work.
       */
       */
 
 
      do
      do
        {
        {
          count = __gthrw_(pthread_mutex_unlock) ((pthread_mutex_t *) mutex->backend);
          count = __gthrw_(pthread_mutex_unlock) ((pthread_mutex_t *) mutex->backend);
          if (count < 0)
          if (count < 0)
            return -1;
            return -1;
        }
        }
      while (count);
      while (count);
 
 
      if (__gthrw_(pthread_mutex_destroy) ((pthread_mutex_t *) mutex->backend))
      if (__gthrw_(pthread_mutex_destroy) ((pthread_mutex_t *) mutex->backend))
        return -1;
        return -1;
 
 
      objc_free (mutex->backend);
      objc_free (mutex->backend);
      mutex->backend = NULL;
      mutex->backend = NULL;
    }
    }
  return 0;
  return 0;
}
}
 
 
/* Grab a lock on a mutex.  */
/* Grab a lock on a mutex.  */
static inline int
static inline int
__gthread_objc_mutex_lock (objc_mutex_t mutex)
__gthread_objc_mutex_lock (objc_mutex_t mutex)
{
{
  if (__gthread_active_p ()
  if (__gthread_active_p ()
      && __gthrw_(pthread_mutex_lock) ((pthread_mutex_t *) mutex->backend) != 0)
      && __gthrw_(pthread_mutex_lock) ((pthread_mutex_t *) mutex->backend) != 0)
    {
    {
      return -1;
      return -1;
    }
    }
 
 
  return 0;
  return 0;
}
}
 
 
/* Try to grab a lock on a mutex.  */
/* Try to grab a lock on a mutex.  */
static inline int
static inline int
__gthread_objc_mutex_trylock (objc_mutex_t mutex)
__gthread_objc_mutex_trylock (objc_mutex_t mutex)
{
{
  if (__gthread_active_p ()
  if (__gthread_active_p ()
      && __gthrw_(pthread_mutex_trylock) ((pthread_mutex_t *) mutex->backend) != 0)
      && __gthrw_(pthread_mutex_trylock) ((pthread_mutex_t *) mutex->backend) != 0)
    {
    {
      return -1;
      return -1;
    }
    }
 
 
  return 0;
  return 0;
}
}
 
 
/* Unlock the mutex */
/* Unlock the mutex */
static inline int
static inline int
__gthread_objc_mutex_unlock (objc_mutex_t mutex)
__gthread_objc_mutex_unlock (objc_mutex_t mutex)
{
{
  if (__gthread_active_p ()
  if (__gthread_active_p ()
      && __gthrw_(pthread_mutex_unlock) ((pthread_mutex_t *) mutex->backend) != 0)
      && __gthrw_(pthread_mutex_unlock) ((pthread_mutex_t *) mutex->backend) != 0)
    {
    {
      return -1;
      return -1;
    }
    }
 
 
  return 0;
  return 0;
}
}
 
 
/* Backend condition mutex functions */
/* Backend condition mutex functions */
 
 
/* Allocate a condition.  */
/* Allocate a condition.  */
static inline int
static inline int
__gthread_objc_condition_allocate (objc_condition_t condition)
__gthread_objc_condition_allocate (objc_condition_t condition)
{
{
  if (__gthread_active_p ())
  if (__gthread_active_p ())
    {
    {
      condition->backend = objc_malloc (sizeof (pthread_cond_t));
      condition->backend = objc_malloc (sizeof (pthread_cond_t));
 
 
      if (__gthrw_(pthread_cond_init) ((pthread_cond_t *) condition->backend, NULL))
      if (__gthrw_(pthread_cond_init) ((pthread_cond_t *) condition->backend, NULL))
        {
        {
          objc_free (condition->backend);
          objc_free (condition->backend);
          condition->backend = NULL;
          condition->backend = NULL;
          return -1;
          return -1;
        }
        }
    }
    }
 
 
  return 0;
  return 0;
}
}
 
 
/* Deallocate a condition.  */
/* Deallocate a condition.  */
static inline int
static inline int
__gthread_objc_condition_deallocate (objc_condition_t condition)
__gthread_objc_condition_deallocate (objc_condition_t condition)
{
{
  if (__gthread_active_p ())
  if (__gthread_active_p ())
    {
    {
      if (__gthrw_(pthread_cond_destroy) ((pthread_cond_t *) condition->backend))
      if (__gthrw_(pthread_cond_destroy) ((pthread_cond_t *) condition->backend))
        return -1;
        return -1;
 
 
      objc_free (condition->backend);
      objc_free (condition->backend);
      condition->backend = NULL;
      condition->backend = NULL;
    }
    }
  return 0;
  return 0;
}
}
 
 
/* Wait on the condition */
/* Wait on the condition */
static inline int
static inline int
__gthread_objc_condition_wait (objc_condition_t condition, objc_mutex_t mutex)
__gthread_objc_condition_wait (objc_condition_t condition, objc_mutex_t mutex)
{
{
  if (__gthread_active_p ())
  if (__gthread_active_p ())
    return __gthrw_(pthread_cond_wait) ((pthread_cond_t *) condition->backend,
    return __gthrw_(pthread_cond_wait) ((pthread_cond_t *) condition->backend,
                              (pthread_mutex_t *) mutex->backend);
                              (pthread_mutex_t *) mutex->backend);
  else
  else
    return 0;
    return 0;
}
}
 
 
/* Wake up all threads waiting on this condition.  */
/* Wake up all threads waiting on this condition.  */
static inline int
static inline int
__gthread_objc_condition_broadcast (objc_condition_t condition)
__gthread_objc_condition_broadcast (objc_condition_t condition)
{
{
  if (__gthread_active_p ())
  if (__gthread_active_p ())
    return __gthrw_(pthread_cond_broadcast) ((pthread_cond_t *) condition->backend);
    return __gthrw_(pthread_cond_broadcast) ((pthread_cond_t *) condition->backend);
  else
  else
    return 0;
    return 0;
}
}
 
 
/* Wake up one thread waiting on this condition.  */
/* Wake up one thread waiting on this condition.  */
static inline int
static inline int
__gthread_objc_condition_signal (objc_condition_t condition)
__gthread_objc_condition_signal (objc_condition_t condition)
{
{
  if (__gthread_active_p ())
  if (__gthread_active_p ())
    return __gthrw_(pthread_cond_signal) ((pthread_cond_t *) condition->backend);
    return __gthrw_(pthread_cond_signal) ((pthread_cond_t *) condition->backend);
  else
  else
    return 0;
    return 0;
}
}
 
 
#else /* _LIBOBJC */
#else /* _LIBOBJC */
 
 
static inline int
static inline int
__gthread_once (__gthread_once_t *__once, void (*__func) (void))
__gthread_once (__gthread_once_t *__once, void (*__func) (void))
{
{
  if (__gthread_active_p ())
  if (__gthread_active_p ())
    return __gthrw_(pthread_once) (__once, __func);
    return __gthrw_(pthread_once) (__once, __func);
  else
  else
    return -1;
    return -1;
}
}
 
 
static inline int
static inline int
__gthread_key_create (__gthread_key_t *__key, void (*__dtor) (void *))
__gthread_key_create (__gthread_key_t *__key, void (*__dtor) (void *))
{
{
  return __gthrw_(pthread_key_create) (__key, __dtor);
  return __gthrw_(pthread_key_create) (__key, __dtor);
}
}
 
 
static inline int
static inline int
__gthread_key_delete (__gthread_key_t __key)
__gthread_key_delete (__gthread_key_t __key)
{
{
  return __gthrw_(pthread_key_delete) (__key);
  return __gthrw_(pthread_key_delete) (__key);
}
}
 
 
static inline void *
static inline void *
__gthread_getspecific (__gthread_key_t __key)
__gthread_getspecific (__gthread_key_t __key)
{
{
  return __gthrw_(pthread_getspecific) (__key);
  return __gthrw_(pthread_getspecific) (__key);
}
}
 
 
static inline int
static inline int
__gthread_setspecific (__gthread_key_t __key, const void *__ptr)
__gthread_setspecific (__gthread_key_t __key, const void *__ptr)
{
{
  return __gthrw_(pthread_setspecific) (__key, __ptr);
  return __gthrw_(pthread_setspecific) (__key, __ptr);
}
}
 
 
static inline int
static inline int
__gthread_mutex_destroy (__gthread_mutex_t *__mutex)
__gthread_mutex_destroy (__gthread_mutex_t *__mutex)
{
{
  if (__gthread_active_p ())
  if (__gthread_active_p ())
    return __gthrw_(pthread_mutex_destroy) (__mutex);
    return __gthrw_(pthread_mutex_destroy) (__mutex);
  else
  else
    return 0;
    return 0;
}
}
 
 
static inline int
static inline int
__gthread_mutex_lock (__gthread_mutex_t *__mutex)
__gthread_mutex_lock (__gthread_mutex_t *__mutex)
{
{
  if (__gthread_active_p ())
  if (__gthread_active_p ())
    return __gthrw_(pthread_mutex_lock) (__mutex);
    return __gthrw_(pthread_mutex_lock) (__mutex);
  else
  else
    return 0;
    return 0;
}
}
 
 
static inline int
static inline int
__gthread_mutex_trylock (__gthread_mutex_t *__mutex)
__gthread_mutex_trylock (__gthread_mutex_t *__mutex)
{
{
  if (__gthread_active_p ())
  if (__gthread_active_p ())
    return __gthrw_(pthread_mutex_trylock) (__mutex);
    return __gthrw_(pthread_mutex_trylock) (__mutex);
  else
  else
    return 0;
    return 0;
}
}
 
 
static inline int
static inline int
__gthread_mutex_unlock (__gthread_mutex_t *__mutex)
__gthread_mutex_unlock (__gthread_mutex_t *__mutex)
{
{
  if (__gthread_active_p ())
  if (__gthread_active_p ())
    return __gthrw_(pthread_mutex_unlock) (__mutex);
    return __gthrw_(pthread_mutex_unlock) (__mutex);
  else
  else
    return 0;
    return 0;
}
}
 
 
static inline int
static inline int
__gthread_recursive_mutex_init_function (__gthread_recursive_mutex_t *__mutex)
__gthread_recursive_mutex_init_function (__gthread_recursive_mutex_t *__mutex)
{
{
  __mutex->depth = 0;
  __mutex->depth = 0;
  __mutex->owner = (pthread_t) 0;
  __mutex->owner = (pthread_t) 0;
  return __gthrw_(pthread_mutex_init) (&__mutex->actual, NULL);
  return __gthrw_(pthread_mutex_init) (&__mutex->actual, NULL);
}
}
 
 
static inline int
static inline int
__gthread_recursive_mutex_lock (__gthread_recursive_mutex_t *__mutex)
__gthread_recursive_mutex_lock (__gthread_recursive_mutex_t *__mutex)
{
{
  if (__gthread_active_p ())
  if (__gthread_active_p ())
    {
    {
      pthread_t __me = __gthrw_(pthread_self) ();
      pthread_t __me = __gthrw_(pthread_self) ();
 
 
      if (__mutex->owner != __me)
      if (__mutex->owner != __me)
        {
        {
          __gthrw_(pthread_mutex_lock) (&__mutex->actual);
          __gthrw_(pthread_mutex_lock) (&__mutex->actual);
          __mutex->owner = __me;
          __mutex->owner = __me;
        }
        }
 
 
      __mutex->depth++;
      __mutex->depth++;
    }
    }
  return 0;
  return 0;
}
}
 
 
static inline int
static inline int
__gthread_recursive_mutex_trylock (__gthread_recursive_mutex_t *__mutex)
__gthread_recursive_mutex_trylock (__gthread_recursive_mutex_t *__mutex)
{
{
  if (__gthread_active_p ())
  if (__gthread_active_p ())
    {
    {
      pthread_t __me = __gthrw_(pthread_self) ();
      pthread_t __me = __gthrw_(pthread_self) ();
 
 
      if (__mutex->owner != __me)
      if (__mutex->owner != __me)
        {
        {
          if (__gthrw_(pthread_mutex_trylock) (&__mutex->actual))
          if (__gthrw_(pthread_mutex_trylock) (&__mutex->actual))
            return 1;
            return 1;
          __mutex->owner = __me;
          __mutex->owner = __me;
        }
        }
 
 
      __mutex->depth++;
      __mutex->depth++;
    }
    }
  return 0;
  return 0;
}
}
 
 
static inline int
static inline int
__gthread_recursive_mutex_unlock (__gthread_recursive_mutex_t *__mutex)
__gthread_recursive_mutex_unlock (__gthread_recursive_mutex_t *__mutex)
{
{
  if (__gthread_active_p ())
  if (__gthread_active_p ())
    {
    {
      if (--__mutex->depth == 0)
      if (--__mutex->depth == 0)
        {
        {
           __mutex->owner = (pthread_t) 0;
           __mutex->owner = (pthread_t) 0;
           __gthrw_(pthread_mutex_unlock) (&__mutex->actual);
           __gthrw_(pthread_mutex_unlock) (&__mutex->actual);
        }
        }
    }
    }
  return 0;
  return 0;
}
}
 
 
static inline int
static inline int
__gthread_cond_broadcast (__gthread_cond_t *__cond)
__gthread_cond_broadcast (__gthread_cond_t *__cond)
{
{
  return __gthrw_(pthread_cond_broadcast) (__cond);
  return __gthrw_(pthread_cond_broadcast) (__cond);
}
}
 
 
static inline int
static inline int
__gthread_cond_wait (__gthread_cond_t *__cond, __gthread_mutex_t *__mutex)
__gthread_cond_wait (__gthread_cond_t *__cond, __gthread_mutex_t *__mutex)
{
{
  return __gthrw_(pthread_cond_wait) (__cond, __mutex);
  return __gthrw_(pthread_cond_wait) (__cond, __mutex);
}
}
 
 
static inline int
static inline int
__gthread_cond_wait_recursive (__gthread_cond_t *__cond,
__gthread_cond_wait_recursive (__gthread_cond_t *__cond,
                               __gthread_recursive_mutex_t *__mutex)
                               __gthread_recursive_mutex_t *__mutex)
{
{
  return __gthrw_(pthread_cond_wait) (__cond, &__mutex->actual);
  return __gthrw_(pthread_cond_wait) (__cond, &__mutex->actual);
}
}
 
 
#endif /* _LIBOBJC */
#endif /* _LIBOBJC */
 
 
#endif /* ! GCC_GTHR_POSIX_H */
#endif /* ! GCC_GTHR_POSIX_H */
 
 

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