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/* Threads compatibility routines for libgcc2 and libobjc.  */
/* Compile this one with gcc.  */
/* Copyright (C) 1997, 1999, 2000, 2004, 2005, 2006
   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 2, 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.
 
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING.  If not, write to the Free
Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301, USA.  */
 
/* As a special exception, if you link this library with other files,
   some of which are compiled with GCC, to produce an executable,
   this library does not by itself cause the resulting executable
   to be covered by the GNU General Public License.
   This exception does not however invalidate any other reasons why
   the executable file might be covered by the GNU General Public License.  */
 
#ifndef GCC_GTHR_SOLARIS_H
#define GCC_GTHR_SOLARIS_H
 
/* Solaris threads as found in Solaris 2.[456].
   Actually these are Unix International (UI) threads, but I don't
   know if anyone else implements these.  */
 
#define __GTHREADS 1
 
#include <thread.h>
#include <errno.h>
 
#ifdef __cplusplus
#define UNUSED(x)
#else
#define UNUSED(x) x __attribute__((unused))
#endif
 
typedef thread_key_t __gthread_key_t;
typedef struct {
  mutex_t mutex;
  int once;
} __gthread_once_t;
typedef mutex_t __gthread_mutex_t;
 
typedef struct {
  long depth;
  thread_t owner;
  mutex_t actual;
} __gthread_recursive_mutex_t;
 
#define __GTHREAD_ONCE_INIT { DEFAULTMUTEX, 0 }
#define __GTHREAD_MUTEX_INIT DEFAULTMUTEX
#define __GTHREAD_RECURSIVE_MUTEX_INIT_FUNCTION __gthread_recursive_mutex_init_function
 
#if SUPPORTS_WEAK && GTHREAD_USE_WEAK
# define __gthrw(name) \
  static __typeof(name) __gthrw_ ## name __attribute__ ((__weakref__(#name)));
# define __gthrw_(name) __gthrw_ ## name
#else
# define __gthrw(name)
# define __gthrw_(name) name
#endif
 
__gthrw(thr_keycreate)
__gthrw(thr_getspecific)
__gthrw(thr_setspecific)
__gthrw(thr_create)
__gthrw(thr_self)
 
__gthrw(mutex_init)
__gthrw(mutex_destroy)
__gthrw(mutex_lock)
__gthrw(mutex_trylock)
__gthrw(mutex_unlock)
 
#ifdef _LIBOBJC
__gthrw(thr_exit)
__gthrw(thr_getprio)
__gthrw(thr_setprio)
__gthrw(thr_yield)
 
__gthrw(cond_init)
__gthrw(cond_destroy)
__gthrw(cond_wait)
__gthrw(cond_broadcast)
__gthrw(cond_signal)
 
#endif
 
#if SUPPORTS_WEAK && GTHREAD_USE_WEAK
 
/* This will not actually work in Solaris 2.5, since libc contains
   dummy symbols of all thr_* routines.  */
 
static inline int
__gthread_active_p (void)
{
  static void *const __gthread_active_ptr = (void *) &__gthrw_(thr_create);
  return __gthread_active_ptr != 0;
}
 
#else /* not SUPPORTS_WEAK */
 
static inline int
__gthread_active_p (void)
{
  return 1;
}
 
#endif /* SUPPORTS_WEAK */
 
#ifdef _LIBOBJC
 
/* Key structure for maintaining thread specific storage */
static thread_key_t _objc_thread_storage;
 
/* 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)
{
  /* Initialize the thread storage key.  */
  if (__gthread_active_p ()
      && __gthrw_(thr_keycreate) (&_objc_thread_storage, NULL) == 0)
    return 0;
 
  return -1;
}
 
/* Close the threads subsystem.  */
static inline int
__gthread_objc_close_thread_system (void)
{
  if (__gthread_active_p ())
    return 0;
  else
    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;
  thread_t new_thread_id = 0;
 
  if (!__gthread_active_p ())
    return NULL;
 
  if (__gthrw_(thr_create) (NULL, 0, (void *) func, arg,
                  THR_DETACHED | THR_NEW_LWP,
                  &new_thread_id) == 0)
    thread_id = *(objc_thread_t *) &new_thread_id;
  else
    thread_id = NULL;
 
  return thread_id;
}
 
/* Set the current thread's priority.  */
static inline int
__gthread_objc_thread_set_priority (int priority)
{
  int sys_priority = 0;
 
  if (!__gthread_active_p ())
    return -1;
 
  switch (priority)
    {
    case OBJC_THREAD_INTERACTIVE_PRIORITY:
      sys_priority = 300;
      break;
    default:
    case OBJC_THREAD_BACKGROUND_PRIORITY:
      sys_priority = 200;
      break;
    case OBJC_THREAD_LOW_PRIORITY:
      sys_priority = 1000;
      break;
    }
 
  /* Change priority */
  if (__gthrw_(thr_setprio) (__gthrw_(thr_self) (), sys_priority) == 0)
    return 0;
  else
    return -1;
}
 
/* Return the current thread's priority.  */
static inline int
__gthread_objc_thread_get_priority (void)
{
  int sys_priority;
 
  if (!__gthread_active_p ())
    return OBJC_THREAD_INTERACTIVE_PRIORITY;
 
  if (__gthrw_(thr_getprio) (__gthrw_(thr_self) (), &sys_priority) == 0)
    {
      if (sys_priority >= 250)
        return OBJC_THREAD_INTERACTIVE_PRIORITY;
      else if (sys_priority >= 150)
        return OBJC_THREAD_BACKGROUND_PRIORITY;
      return OBJC_THREAD_LOW_PRIORITY;
    }
 
  /* Couldn't get priority.  */
  return -1;
}
 
/* Yield our process time to another thread.  */
static inline void
__gthread_objc_thread_yield (void)
{
  if (__gthread_active_p ())
    __gthrw_(thr_yield) ();
}
 
/* Terminate the current thread.  */
static inline int
__gthread_objc_thread_exit (void)
{
  if (__gthread_active_p ())
    /* exit the thread */
    __gthrw_(thr_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_(thr_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 ())
    {
      if (__gthrw_(thr_setspecific) (_objc_thread_storage, value) == 0)
        return 0;
      else
        return -1;
    }
  else
    {
      thread_local_storage = value;
      return 0;
    }
}
 
/* Returns the thread's local storage pointer.  */
static inline void *
__gthread_objc_thread_get_data (void)
{
  void *value = NULL;
 
  if (__gthread_active_p ())
    {
      if (__gthrw_(thr_getspecific) (_objc_thread_storage, &value) == 0)
        return value;
      else
        return NULL;
    }
  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 ()
      && __gthrw_(mutex_init) ((mutex_t *) (&(mutex->backend)), USYNC_THREAD, 0))
    return -1;
 
  return 0;
}
 
/* Deallocate a mutex.  */
static inline int
__gthread_objc_mutex_deallocate (objc_mutex_t mutex)
{
  if (__gthread_active_p ())
    __gthrw_(mutex_destroy) ((mutex_t *) (&(mutex->backend)));
 
  return 0;
}
 
/* Grab a lock on a mutex.  */
static inline int
__gthread_objc_mutex_lock (objc_mutex_t mutex)
{
  if (__gthread_active_p ()
      && __gthrw_(mutex_lock) ((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_(mutex_trylock) ((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_(mutex_unlock) ((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 ())
    return __gthrw_(cond_init) ((cond_t *) (&(condition->backend)), USYNC_THREAD,
                      NULL);
  else
    return 0;
}
 
/* Deallocate a condition.  */
static inline int
__gthread_objc_condition_deallocate (objc_condition_t condition)
{
  if (__gthread_active_p ())
    return __gthrw_(cond_destroy) ((cond_t *) (&(condition->backend)));
  else
    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_(cond_wait) ((cond_t *) (&(condition->backend)),
                      (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_(cond_broadcast) ((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_(cond_signal) ((cond_t *) (&(condition->backend)));
  else
    return 0;
}
 
#else /* _LIBOBJC */
 
static inline int
__gthread_once (__gthread_once_t *once, void (*func) (void))
{
  if (! __gthread_active_p ())
    return -1;
 
  if (once == 0 || func == 0)
    return EINVAL;
 
  if (once->once == 0)
    {
      int status = __gthrw_(mutex_lock) (&once->mutex);
      if (status != 0)
        return status;
      if (once->once == 0)
        {
          (*func) ();
          once->once++;
        }
      __gthrw_(mutex_unlock) (&once->mutex);
    }
  return 0;
}
 
static inline int
__gthread_key_create (__gthread_key_t *key, void (*dtor) (void *))
{
  /* Solaris 2.5 contains thr_* routines no-op in libc, so test if we actually
     got a reasonable key value, and if not, fail.  */
  *key = (__gthread_key_t)-1;
  if (__gthrw_(thr_keycreate) (key, dtor) != 0 || *key == (__gthread_key_t)-1)
    return -1;
  else
    return 0;
}
 
static inline int
__gthread_key_delete (__gthread_key_t UNUSED (key))
{
  /* Not possible.  */
  return -1;
}
 
static inline void *
__gthread_getspecific (__gthread_key_t key)
{
  void *ptr;
  if (__gthrw_(thr_getspecific) (key, &ptr) == 0)
    return ptr;
  else
    return 0;
}
 
static inline int
__gthread_setspecific (__gthread_key_t key, const void *ptr)
{
  return __gthrw_(thr_setspecific) (key, (void *) ptr);
}
 
static inline int
__gthread_mutex_lock (__gthread_mutex_t *mutex)
{
  if (__gthread_active_p ())
    return __gthrw_(mutex_lock) (mutex);
  else
    return 0;
}
 
static inline int
__gthread_mutex_trylock (__gthread_mutex_t *mutex)
{
  if (__gthread_active_p ())
    return __gthrw_(mutex_trylock) (mutex);
  else
    return 0;
}
 
static inline int
__gthread_mutex_unlock (__gthread_mutex_t *mutex)
{
  if (__gthread_active_p ())
    return __gthrw_(mutex_unlock) (mutex);
  else
    return 0;
}
 
static inline int
__gthread_recursive_mutex_init_function (__gthread_recursive_mutex_t *mutex)
{
  mutex->depth = 0;
  mutex->owner = (thread_t) 0;
  return __gthrw_(mutex_init) (&mutex->actual, USYNC_THREAD, 0);
}
 
static inline int
__gthread_recursive_mutex_lock (__gthread_recursive_mutex_t *mutex)
{
  if (__gthread_active_p ())
    {
      thread_t me = __gthrw_(thr_self) ();
 
      if (mutex->owner != me)
        {
          __gthrw_(mutex_lock) (&mutex->actual);
          mutex->owner = me;
        }
 
      mutex->depth++;
    }
  return 0;
}
 
static inline int
__gthread_recursive_mutex_trylock (__gthread_recursive_mutex_t *mutex)
{
  if (__gthread_active_p ())
    {
      thread_t me = __gthrw_(thr_self) ();
 
      if (mutex->owner != me)
        {
          if (__gthrw_(mutex_trylock) (&mutex->actual))
            return 1;
          mutex->owner = me;
        }
 
      mutex->depth++;
    }
  return 0;
}
 
static inline int
__gthread_recursive_mutex_unlock (__gthread_recursive_mutex_t *mutex)
{
  if (__gthread_active_p ())
    {
      if (--mutex->depth == 0)
        {
           mutex->owner = (thread_t) 0;
           __gthrw_(mutex_unlock) (&mutex->actual);
        }
    }
  return 0;
}
 
#endif /* _LIBOBJC */
 
#undef UNUSED
 
#endif /* ! GCC_GTHR_SOLARIS_H */

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[/] [openrisc/] [trunk/] [gnu-old/] [gcc-4.2.2/] [gcc/] [gthr-solaris.h] - Blame information for rev 816

Line No.	Rev	Author	Line
1	38	julius	`/* Threads compatibility routines for libgcc2 and libobjc. */`
2			`/* Compile this one with gcc. */`
3			`/* Copyright (C) 1997, 1999, 2000, 2004, 2005, 2006`
4			`Free Software Foundation, Inc.`
5
6			`This file is part of GCC.`
7
8			`GCC is free software; you can redistribute it and/or modify it under`
9			`the terms of the GNU General Public License as published by the Free`
10			`Software Foundation; either version 2, or (at your option) any later`
11			`version.`
12
13			`GCC is distributed in the hope that it will be useful, but WITHOUT ANY`
14			`WARRANTY; without even the implied warranty of MERCHANTABILITY or`
15			`FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License`
16			`for more details.`
17
18			`You should have received a copy of the GNU General Public License`
19			`along with GCC; see the file COPYING. If not, write to the Free`
20			`Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA`
21			`02110-1301, USA. */`
22
23			`/* As a special exception, if you link this library with other files,`
24			`some of which are compiled with GCC, to produce an executable,`
25			`this library does not by itself cause the resulting executable`
26			`to be covered by the GNU General Public License.`
27			`This exception does not however invalidate any other reasons why`
28			`the executable file might be covered by the GNU General Public License. */`
29
30			`#ifndef GCC_GTHR_SOLARIS_H`
31			`#define GCC_GTHR_SOLARIS_H`
32
33			`/* Solaris threads as found in Solaris 2.[456].`
34			`Actually these are Unix International (UI) threads, but I don't`
35			`know if anyone else implements these. */`
36
37			`#define __GTHREADS 1`
38
39			`#include <thread.h>`
40			`#include <errno.h>`
41
42			`#ifdef __cplusplus`
43			`#define UNUSED(x)`
44			`#else`
45			`#define UNUSED(x) x __attribute__((unused))`
46			`#endif`
47
48			`typedef thread_key_t __gthread_key_t;`
49			`typedef struct {`
50			`mutex_t mutex;`
51			`int once;`
52			`} __gthread_once_t;`
53			`typedef mutex_t __gthread_mutex_t;`
54
55			`typedef struct {`
56			`long depth;`
57			`thread_t owner;`
58			`mutex_t actual;`
59			`} __gthread_recursive_mutex_t;`
60
61			`#define __GTHREAD_ONCE_INIT { DEFAULTMUTEX, 0 }`
62			`#define __GTHREAD_MUTEX_INIT DEFAULTMUTEX`
63			`#define __GTHREAD_RECURSIVE_MUTEX_INIT_FUNCTION __gthread_recursive_mutex_init_function`
64
65			`#if SUPPORTS_WEAK && GTHREAD_USE_WEAK`
66			`# define __gthrw(name) \`
67			`static __typeof(name) __gthrw_ ## name __attribute__ ((__weakref__(#name)));`
68			`# define __gthrw_(name) __gthrw_ ## name`
69			`#else`
70			`# define __gthrw(name)`
71			`# define __gthrw_(name) name`
72			`#endif`
73
74			`__gthrw(thr_keycreate)`
75			`__gthrw(thr_getspecific)`
76			`__gthrw(thr_setspecific)`
77			`__gthrw(thr_create)`
78			`__gthrw(thr_self)`
79
80			`__gthrw(mutex_init)`
81			`__gthrw(mutex_destroy)`
82			`__gthrw(mutex_lock)`
83			`__gthrw(mutex_trylock)`
84			`__gthrw(mutex_unlock)`
85
86			`#ifdef _LIBOBJC`
87			`__gthrw(thr_exit)`
88			`__gthrw(thr_getprio)`
89			`__gthrw(thr_setprio)`
90			`__gthrw(thr_yield)`
91
92			`__gthrw(cond_init)`
93			`__gthrw(cond_destroy)`
94			`__gthrw(cond_wait)`
95			`__gthrw(cond_broadcast)`
96			`__gthrw(cond_signal)`
97
98			`#endif`
99
100			`#if SUPPORTS_WEAK && GTHREAD_USE_WEAK`
101
102			`/* This will not actually work in Solaris 2.5, since libc contains`
103			`dummy symbols of all thr_* routines. */`
104
105			`static inline int`
106			`__gthread_active_p (void)`
107			`{`
108			`static void const __gthread_active_ptr = (void ) &__gthrw_(thr_create);`
109			`return __gthread_active_ptr != 0;`
110			`}`
111
112			`#else /* not SUPPORTS_WEAK */`
113
114			`static inline int`
115			`__gthread_active_p (void)`
116			`{`
117			`return 1;`
118			`}`
119
120			`#endif /* SUPPORTS_WEAK */`
121
122			`#ifdef _LIBOBJC`
123
124			`/* Key structure for maintaining thread specific storage */`
125			`static thread_key_t _objc_thread_storage;`
126
127			`/* Thread local storage for a single thread */`
128			`static void *thread_local_storage = NULL;`
129
130			`/* Backend initialization functions */`
131
132			`/* Initialize the threads subsystem. */`
133			`static inline int`
134			`__gthread_objc_init_thread_system (void)`
135			`{`
136			`/* Initialize the thread storage key. */`
137			`if (__gthread_active_p ()`
138			`&& __gthrw_(thr_keycreate) (&_objc_thread_storage, NULL) == 0)`
139			`return 0;`
140
141			`return -1;`
142			`}`
143
144			`/* Close the threads subsystem. */`
145			`static inline int`
146			`__gthread_objc_close_thread_system (void)`
147			`{`
148			`if (__gthread_active_p ())`
149			`return 0;`
150			`else`
151			`return -1;`
152			`}`
153
154			`/* Backend thread functions */`
155
156			`/* Create a new thread of execution. */`
157			`static inline objc_thread_t`
158			`__gthread_objc_thread_detach (void (func)(void ), void *arg)`
159			`{`
160			`objc_thread_t thread_id;`
161			`thread_t new_thread_id = 0;`
162
163			`if (!__gthread_active_p ())`
164			`return NULL;`
165
166			`if (__gthrw_(thr_create) (NULL, 0, (void *) func, arg,`
167			`THR_DETACHED \| THR_NEW_LWP,`
168			`&new_thread_id) == 0)`
169			`thread_id = (objc_thread_t ) &new_thread_id;`
170			`else`
171			`thread_id = NULL;`
172
173			`return thread_id;`
174			`}`
175
176			`/* Set the current thread's priority. */`
177			`static inline int`
178			`__gthread_objc_thread_set_priority (int priority)`
179			`{`
180			`int sys_priority = 0;`
181
182			`if (!__gthread_active_p ())`
183			`return -1;`
184
185			`switch (priority)`
186			`{`
187			`case OBJC_THREAD_INTERACTIVE_PRIORITY:`
188			`sys_priority = 300;`
189			`break;`
190			`default:`
191			`case OBJC_THREAD_BACKGROUND_PRIORITY:`
192			`sys_priority = 200;`
193			`break;`
194			`case OBJC_THREAD_LOW_PRIORITY:`
195			`sys_priority = 1000;`
196			`break;`
197			`}`
198
199			`/* Change priority */`
200			`if (__gthrw_(thr_setprio) (__gthrw_(thr_self) (), sys_priority) == 0)`
201			`return 0;`
202			`else`
203			`return -1;`
204			`}`
205
206			`/* Return the current thread's priority. */`
207			`static inline int`
208			`__gthread_objc_thread_get_priority (void)`
209			`{`
210			`int sys_priority;`
211
212			`if (!__gthread_active_p ())`
213			`return OBJC_THREAD_INTERACTIVE_PRIORITY;`
214
215			`if (__gthrw_(thr_getprio) (__gthrw_(thr_self) (), &sys_priority) == 0)`
216			`{`
217			`if (sys_priority >= 250)`
218			`return OBJC_THREAD_INTERACTIVE_PRIORITY;`
219			`else if (sys_priority >= 150)`
220			`return OBJC_THREAD_BACKGROUND_PRIORITY;`
221			`return OBJC_THREAD_LOW_PRIORITY;`
222			`}`
223
224			`/* Couldn't get priority. */`
225			`return -1;`
226			`}`
227
228			`/* Yield our process time to another thread. */`
229			`static inline void`
230			`__gthread_objc_thread_yield (void)`
231			`{`
232			`if (__gthread_active_p ())`
233			`__gthrw_(thr_yield) ();`
234			`}`
235
236			`/* Terminate the current thread. */`
237			`static inline int`
238			`__gthread_objc_thread_exit (void)`
239			`{`
240			`if (__gthread_active_p ())`
241			`/* exit the thread */`
242			`__gthrw_(thr_exit) (&__objc_thread_exit_status);`
243
244			`/* Failed if we reached here */`
245			`return -1;`
246			`}`
247
248			`/* Returns an integer value which uniquely describes a thread. */`
249			`static inline objc_thread_t`
250			`__gthread_objc_thread_id (void)`
251			`{`
252			`if (__gthread_active_p ())`
253			`return (objc_thread_t) __gthrw_(thr_self) ();`
254			`else`
255			`return (objc_thread_t) 1;`
256			`}`
257
258			`/* Sets the thread's local storage pointer. */`
259			`static inline int`
260			`__gthread_objc_thread_set_data (void *value)`
261			`{`
262			`if (__gthread_active_p ())`
263			`{`
264			`if (__gthrw_(thr_setspecific) (_objc_thread_storage, value) == 0)`
265			`return 0;`
266			`else`
267			`return -1;`
268			`}`
269			`else`
270			`{`
271			`thread_local_storage = value;`
272			`return 0;`
273			`}`
274			`}`
275
276			`/* Returns the thread's local storage pointer. */`
277			`static inline void *`
278			`__gthread_objc_thread_get_data (void)`
279			`{`
280			`void *value = NULL;`
281
282			`if (__gthread_active_p ())`
283			`{`
284			`if (__gthrw_(thr_getspecific) (_objc_thread_storage, &value) == 0)`
285			`return value;`
286			`else`
287			`return NULL;`
288			`}`
289			`else`
290			`return thread_local_storage;`
291			`}`
292
293			`/* Backend mutex functions */`
294
295			`/* Allocate a mutex. */`
296			`static inline int`
297			`__gthread_objc_mutex_allocate (objc_mutex_t mutex)`
298			`{`
299			`if (__gthread_active_p ()`
300			`&& __gthrw_(mutex_init) ((mutex_t *) (&(mutex->backend)), USYNC_THREAD, 0))`
301			`return -1;`
302
303			`return 0;`
304			`}`
305
306			`/* Deallocate a mutex. */`
307			`static inline int`
308			`__gthread_objc_mutex_deallocate (objc_mutex_t mutex)`
309			`{`
310			`if (__gthread_active_p ())`
311			`__gthrw_(mutex_destroy) ((mutex_t *) (&(mutex->backend)));`
312
313			`return 0;`
314			`}`
315
316			`/* Grab a lock on a mutex. */`
317			`static inline int`
318			`__gthread_objc_mutex_lock (objc_mutex_t mutex)`
319			`{`
320			`if (__gthread_active_p ()`
321			`&& __gthrw_(mutex_lock) ((mutex_t *) (&(mutex->backend))) != 0)`
322			`return -1;`
323
324			`return 0;`
325			`}`
326
327			`/* Try to grab a lock on a mutex. */`
328			`static inline int`
329			`__gthread_objc_mutex_trylock (objc_mutex_t mutex)`
330			`{`
331			`if (__gthread_active_p ()`
332			`&& __gthrw_(mutex_trylock) ((mutex_t *) (&(mutex->backend))) != 0)`
333			`return -1;`
334
335			`return 0;`
336			`}`
337
338			`/* Unlock the mutex */`
339			`static inline int`
340			`__gthread_objc_mutex_unlock (objc_mutex_t mutex)`
341			`{`
342			`if (__gthread_active_p ()`
343			`&& __gthrw_(mutex_unlock) ((mutex_t *) (&(mutex->backend))) != 0)`
344			`return -1;`
345
346			`return 0;`
347			`}`
348
349			`/* Backend condition mutex functions */`
350
351			`/* Allocate a condition. */`
352			`static inline int`
353			`__gthread_objc_condition_allocate (objc_condition_t condition)`
354			`{`
355			`if (__gthread_active_p ())`
356			`return __gthrw_(cond_init) ((cond_t *) (&(condition->backend)), USYNC_THREAD,`
357			`NULL);`
358			`else`
359			`return 0;`
360			`}`
361
362			`/* Deallocate a condition. */`
363			`static inline int`
364			`__gthread_objc_condition_deallocate (objc_condition_t condition)`
365			`{`
366			`if (__gthread_active_p ())`
367			`return __gthrw_(cond_destroy) ((cond_t *) (&(condition->backend)));`
368			`else`
369			`return 0;`
370			`}`
371
372			`/* Wait on the condition */`
373			`static inline int`
374			`__gthread_objc_condition_wait (objc_condition_t condition, objc_mutex_t mutex)`
375			`{`
376			`if (__gthread_active_p ())`
377			`return __gthrw_(cond_wait) ((cond_t *) (&(condition->backend)),`
378			`(mutex_t *) (&(mutex->backend)));`
379			`else`
380			`return 0;`
381			`}`
382
383			`/* Wake up all threads waiting on this condition. */`
384			`static inline int`
385			`__gthread_objc_condition_broadcast (objc_condition_t condition)`
386			`{`
387			`if (__gthread_active_p ())`
388			`return __gthrw_(cond_broadcast) ((cond_t *) (&(condition->backend)));`
389			`else`
390			`return 0;`
391			`}`
392
393			`/* Wake up one thread waiting on this condition. */`
394			`static inline int`
395			`__gthread_objc_condition_signal (objc_condition_t condition)`
396			`{`
397			`if (__gthread_active_p ())`
398			`return __gthrw_(cond_signal) ((cond_t *) (&(condition->backend)));`
399			`else`
400			`return 0;`
401			`}`
402
403			`#else /* _LIBOBJC */`
404
405			`static inline int`
406			`__gthread_once (__gthread_once_t once, void (func) (void))`
407			`{`
408			`if (! __gthread_active_p ())`
409			`return -1;`
410
411			`if (once == 0 \|\| func == 0)`
412			`return EINVAL;`
413
414			`if (once->once == 0)`
415			`{`
416			`int status = __gthrw_(mutex_lock) (&once->mutex);`
417			`if (status != 0)`
418			`return status;`
419			`if (once->once == 0)`
420			`{`
421			`(*func) ();`
422			`once->once++;`
423			`}`
424			`__gthrw_(mutex_unlock) (&once->mutex);`
425			`}`
426			`return 0;`
427			`}`
428
429			`static inline int`
430			`__gthread_key_create (__gthread_key_t key, void (dtor) (void *))`
431			`{`
432			`/* Solaris 2.5 contains thr_* routines no-op in libc, so test if we actually`
433			`got a reasonable key value, and if not, fail. */`
434			`*key = (__gthread_key_t)-1;`
435			`if (__gthrw_(thr_keycreate) (key, dtor) != 0 \|\| *key == (__gthread_key_t)-1)`
436			`return -1;`
437			`else`
438			`return 0;`
439			`}`
440
441			`static inline int`
442			`__gthread_key_delete (__gthread_key_t UNUSED (key))`
443			`{`
444			`/* Not possible. */`
445			`return -1;`
446			`}`
447
448			`static inline void *`
449			`__gthread_getspecific (__gthread_key_t key)`
450			`{`
451			`void *ptr;`
452			`if (__gthrw_(thr_getspecific) (key, &ptr) == 0)`
453			`return ptr;`
454			`else`
455			`return 0;`
456			`}`
457
458			`static inline int`
459			`__gthread_setspecific (__gthread_key_t key, const void *ptr)`
460			`{`
461			`return __gthrw_(thr_setspecific) (key, (void *) ptr);`
462			`}`
463
464			`static inline int`
465			`__gthread_mutex_lock (__gthread_mutex_t *mutex)`
466			`{`
467			`if (__gthread_active_p ())`
468			`return __gthrw_(mutex_lock) (mutex);`
469			`else`
470			`return 0;`
471			`}`
472
473			`static inline int`
474			`__gthread_mutex_trylock (__gthread_mutex_t *mutex)`
475			`{`
476			`if (__gthread_active_p ())`
477			`return __gthrw_(mutex_trylock) (mutex);`
478			`else`
479			`return 0;`
480			`}`
481
482			`static inline int`
483			`__gthread_mutex_unlock (__gthread_mutex_t *mutex)`
484			`{`
485			`if (__gthread_active_p ())`
486			`return __gthrw_(mutex_unlock) (mutex);`
487			`else`
488			`return 0;`
489			`}`
490
491			`static inline int`
492			`__gthread_recursive_mutex_init_function (__gthread_recursive_mutex_t *mutex)`
493			`{`
494			`mutex->depth = 0;`
495			`mutex->owner = (thread_t) 0;`
496			`return __gthrw_(mutex_init) (&mutex->actual, USYNC_THREAD, 0);`
497			`}`
498
499			`static inline int`
500			`__gthread_recursive_mutex_lock (__gthread_recursive_mutex_t *mutex)`
501			`{`
502			`if (__gthread_active_p ())`
503			`{`
504			`thread_t me = __gthrw_(thr_self) ();`
505
506			`if (mutex->owner != me)`
507			`{`
508			`__gthrw_(mutex_lock) (&mutex->actual);`
509			`mutex->owner = me;`
510			`}`
511
512			`mutex->depth++;`
513			`}`
514			`return 0;`
515			`}`
516
517			`static inline int`
518			`__gthread_recursive_mutex_trylock (__gthread_recursive_mutex_t *mutex)`
519			`{`
520			`if (__gthread_active_p ())`
521			`{`
522			`thread_t me = __gthrw_(thr_self) ();`
523
524			`if (mutex->owner != me)`
525			`{`
526			`if (__gthrw_(mutex_trylock) (&mutex->actual))`
527			`return 1;`
528			`mutex->owner = me;`
529			`}`
530
531			`mutex->depth++;`
532			`}`
533			`return 0;`
534			`}`
535
536			`static inline int`
537			`__gthread_recursive_mutex_unlock (__gthread_recursive_mutex_t *mutex)`
538			`{`
539			`if (__gthread_active_p ())`
540			`{`
541			`if (--mutex->depth == 0)`
542			`{`
543			`mutex->owner = (thread_t) 0;`
544			`__gthrw_(mutex_unlock) (&mutex->actual);`
545			`}`
546			`}`
547			`return 0;`
548			`}`
549
550			`#endif /* _LIBOBJC */`
551
552			`#undef UNUSED`
553
554			`#endif /* ! GCC_GTHR_SOLARIS_H */`