PR tree-optimization/37027

[pf3gnuchains/gcc-fork.git] / gcc / gthr-dce.h

diff --git a/gcc/gthr-dce.h b/gcc/gthr-dce.h
index 916f120..4226359 100644 (file)
--- a/gcc/gthr-dce.h
+++ b/gcc/gthr-dce.h
@@ -1,12 +1,13 @@
 /* Threads compatibility routines for libgcc2 and libobjc.  */
 /* Compile this one with gcc.  */
 /* Threads compatibility routines for libgcc2 and libobjc.  */
 /* Compile this one with gcc.  */

-/* Copyright (C) 1997, 1999, 2000, 2001 Free Software Foundation, Inc.
+/* Copyright (C) 1997, 1999, 2000, 2001, 2004, 2005, 2008, 2009
+   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
 
 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
+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
 version.
 
 GCC is distributed in the hope that it will be useful, but WITHOUT ANY


@@ -14,17 +15,14 @@ WARRANTY; without even the implied warranty of MERCHANTABILITY or
 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 for more details.
 
 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, 59 Temple Place - Suite 330, Boston, MA
-02111-1307, USA.  */
+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.

 
 

-/* 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.  */
+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_DCE_H
 #define GCC_GTHR_DCE_H
 
 #ifndef GCC_GTHR_DCE_H
 #define GCC_GTHR_DCE_H


@@ -39,15 +37,18 @@ Software Foundation, 59 Temple Place - Suite 330, Boston, MA
    DCE threads are based on POSIX threads draft 4, and many things
    have changed since then.  */
 
    DCE threads are based on POSIX threads draft 4, and many things
    have changed since then.  */
 

-#define __GTHREADS 1
-
-#include <pthread.h>
-
+/* Make sure CONST_CAST2 (original in system.h) is defined.  */
+#ifndef CONST_CAST2

 #ifdef __cplusplus
 #ifdef __cplusplus

-#define UNUSED(x) x
+#define CONST_CAST2(TOTYPE,FROMTYPE,X) (const_cast<TOTYPE> (X))

 #else
 #else

-#define UNUSED(x) x __attribute__((unused))
+#define CONST_CAST2(TOTYPE,FROMTYPE,X) ((__extension__(union {FROMTYPE _q; TOTYPE _nq;})(X))._nq)

 #endif
 #endif

+#endif
+
+#define __GTHREADS 1
+
+#include <pthread.h>

 
 typedef pthread_key_t __gthread_key_t;
 typedef pthread_once_t __gthread_once_t;
 
 typedef pthread_key_t __gthread_key_t;
 typedef pthread_once_t __gthread_once_t;


@@ -62,40 +63,55 @@ typedef pthread_mutex_t __gthread_recursive_mutex_t;
 #define __GTHREAD_MUTEX_INIT_DEFAULT pthread_once_init
 
 #if SUPPORTS_WEAK && GTHREAD_USE_WEAK
 #define __GTHREAD_MUTEX_INIT_DEFAULT pthread_once_init
 
 #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

 
 

-#pragma weak pthread_once
-#pragma weak pthread_once_init
-#pragma weak pthread_keycreate
-#pragma weak pthread_key_delete
-#pragma weak pthread_getspecific
-#pragma weak pthread_setspecific
-#pragma weak pthread_create
-#pragma weak pthread_mutex_init
-#pragma weak pthread_mutex_lock
-#pragma weak pthread_mutex_trylock
-#pragma weak pthread_mutex_unlock
-#pragma weak pthread_mutexattr_create
-#pragma weak pthread_mutexattr_setkind_np
-#pragma weak pthread_mutexattr_delete
+__gthrw(pthread_once)
+__gthrw(pthread_keycreate)
+__gthrw(pthread_getspecific)
+__gthrw(pthread_setspecific)
+__gthrw(pthread_create)
+__gthrw(pthread_mutex_init)
+__gthrw(pthread_mutex_destroy)
+__gthrw(pthread_mutex_lock)
+__gthrw(pthread_mutex_trylock)
+__gthrw(pthread_mutex_unlock)
+__gthrw(pthread_mutexattr_create)
+__gthrw(pthread_mutexattr_setkind_np)
+__gthrw(pthread_mutexattr_delete)

 
 #ifdef _LIBOBJC
 /* Objective-C.  */
 
 #ifdef _LIBOBJC
 /* Objective-C.  */

-#pragma weak pthread_cond_broadcast
-#pragma weak pthread_cond_destroy
-#pragma weak pthread_cond_init
-#pragma weak pthread_cond_signal
-#pragma weak pthread_cond_wait
-#pragma weak pthread_exit
-#pragma weak pthread_getunique_np
-#pragma weak pthread_mutex_destroy
-#pragma weak pthread_self
-#pragma weak pthread_yield
+__gthrw(pthread_cond_broadcast)
+__gthrw(pthread_cond_destroy)
+__gthrw(pthread_cond_init)
+__gthrw(pthread_cond_signal)
+__gthrw(pthread_cond_wait)
+__gthrw(pthread_exit)
+
+#ifdef pthread_getunique_np
+# define __gthrw_pthread_getunique_np pthread_getunique_np
+#else
+__gthrw(pthread_getunique_np)
+# define __gthrw_pthread_getunique_np __gthrw_(pthread_getunique_np)

 #endif
 
 #endif
 

+__gthrw(pthread_mutex_destroy)
+__gthrw(pthread_self)
+__gthrw(pthread_yield)
+#endif
+
+#if SUPPORTS_WEAK && GTHREAD_USE_WEAK
+

 static inline int
 __gthread_active_p (void)
 {
 static inline int
 __gthread_active_p (void)
 {

-  static void *const __gthread_active_ptr = (void *) &pthread_create;
+  static void *const __gthread_active_ptr = (void *) &__gthrw_(pthread_create);

   return __gthread_active_ptr != 0;
 }
 
   return __gthread_active_ptr != 0;
 }
 


@@ -124,8 +140,8 @@ static inline int
 __gthread_objc_init_thread_system (void)
 {
   if (__gthread_active_p ())
 __gthread_objc_init_thread_system (void)
 {
   if (__gthread_active_p ())

-    /* Initialize the thread storage key */
-    return pthread_keycreate (&_objc_thread_storage, NULL);
+    /* Initialize the thread storage key.  */
+    return __gthrw_(pthread_keycreate) (&_objc_thread_storage, NULL);

   else
     return -1;
 }
   else
     return -1;
 }


@@ -152,7 +168,7 @@ __gthread_objc_thread_detach (void (*func)(void *), void *arg)
   if (!__gthread_active_p ())
     return NULL;
 
   if (!__gthread_active_p ())
     return NULL;
 

-  if (!(pthread_create (&new_thread_handle, pthread_attr_default,
+  if (!(__gthrw_(pthread_create) (&new_thread_handle, pthread_attr_default,

                        (void *) func, arg)))
     {
       /* ??? May not work! (64bit) */
                        (void *) func, arg)))
     {
       /* ??? May not work! (64bit) */


@@ -189,7 +205,7 @@ __gthread_objc_thread_set_priority (int priority)
     }
 
   /* Change the priority.  */
     }
 
   /* Change the priority.  */

-  if (pthread_setprio (pthread_self (), sys_priority) >= 0)
+  if (pthread_setprio (__gthrw_(pthread_self) (), sys_priority) >= 0)

     return 0;
   else
     /* Failed */
     return 0;
   else
     /* Failed */


@@ -204,7 +220,7 @@ __gthread_objc_thread_get_priority (void)
 
   if (__gthread_active_p ())
     {
 
   if (__gthread_active_p ())
     {

-      if ((sys_priority = pthread_getprio (pthread_self ())) >= 0)
+      if ((sys_priority = pthread_getprio (__gthrw_(pthread_self) ())) >= 0)

        {
          if (sys_priority >= PRI_FG_MIN_NP
              && sys_priority <= PRI_FG_MAX_NP)
        {
          if (sys_priority >= PRI_FG_MIN_NP
              && sys_priority <= PRI_FG_MAX_NP)


@@ -227,7 +243,7 @@ static inline void
 __gthread_objc_thread_yield (void)
 {
   if (__gthread_active_p ())
 __gthread_objc_thread_yield (void)
 {
   if (__gthread_active_p ())

-    pthread_yield ();
+    __gthrw_(pthread_yield) ();

 }
 
 /* Terminate the current thread.  */
 }
 
 /* Terminate the current thread.  */


@@ -236,7 +252,7 @@ __gthread_objc_thread_exit (void)
 {
   if (__gthread_active_p ())
     /* exit the thread */
 {
   if (__gthread_active_p ())
     /* exit the thread */

-    pthread_exit (&__objc_thread_exit_status);
+    __gthrw_(pthread_exit) (&__objc_thread_exit_status);

 
   /* Failed if we reached here */
   return -1;
 
   /* Failed if we reached here */
   return -1;


@@ -248,9 +264,9 @@ __gthread_objc_thread_id (void)
 {
   if (__gthread_active_p ())
     {
 {
   if (__gthread_active_p ())
     {

-      pthread_t self = pthread_self ();
+      pthread_t self = __gthrw_(pthread_self) ();

 
 

-      return (objc_thread_t) pthread_getunique_np (&self);
+      return (objc_thread_t) __gthrw_pthread_getunique_np (&self);

     }
   else
     return (objc_thread_t) 1;
     }
   else
     return (objc_thread_t) 1;


@@ -261,7 +277,7 @@ static inline int
 __gthread_objc_thread_set_data (void *value)
 {
   if (__gthread_active_p ())
 __gthread_objc_thread_set_data (void *value)
 {
   if (__gthread_active_p ())

-    return pthread_setspecific (_objc_thread_storage, value);
+    return __gthrw_(pthread_setspecific) (_objc_thread_storage, value);

   else
     {
       thread_local_storage = value;
   else
     {
       thread_local_storage = value;


@@ -277,7 +293,7 @@ __gthread_objc_thread_get_data (void)
 
   if (__gthread_active_p ())
     {
 
   if (__gthread_active_p ())
     {

-      if (!(pthread_getspecific (_objc_thread_storage, &value)))
+      if (!(__gthrw_(pthread_getspecific) (_objc_thread_storage, &value)))

        return value;
 
       return NULL;
        return value;
 
       return NULL;


@@ -296,7 +312,7 @@ __gthread_objc_mutex_allocate (objc_mutex_t mutex)
     {
       mutex->backend = objc_malloc (sizeof (pthread_mutex_t));
 
     {
       mutex->backend = objc_malloc (sizeof (pthread_mutex_t));
 

-      if (pthread_mutex_init ((pthread_mutex_t *) mutex->backend,
+      if (__gthrw_(pthread_mutex_init) ((pthread_mutex_t *) mutex->backend,

                              pthread_mutexattr_default))
        {
          objc_free (mutex->backend);
                              pthread_mutexattr_default))
        {
          objc_free (mutex->backend);


@@ -314,7 +330,7 @@ __gthread_objc_mutex_deallocate (objc_mutex_t mutex)
 {
   if (__gthread_active_p ())
     {
 {
   if (__gthread_active_p ())
     {

-      if (pthread_mutex_destroy ((pthread_mutex_t *) mutex->backend))
+      if (__gthrw_(pthread_mutex_destroy) ((pthread_mutex_t *) mutex->backend))

        return -1;
 
       objc_free (mutex->backend);
        return -1;
 
       objc_free (mutex->backend);


@@ -329,7 +345,7 @@ static inline int
 __gthread_objc_mutex_lock (objc_mutex_t mutex)
 {
   if (__gthread_active_p ())
 __gthread_objc_mutex_lock (objc_mutex_t mutex)
 {
   if (__gthread_active_p ())

-    return pthread_mutex_lock ((pthread_mutex_t *) mutex->backend);
+    return __gthrw_(pthread_mutex_lock) ((pthread_mutex_t *) mutex->backend);

   else
     return 0;
 }
   else
     return 0;
 }


@@ -339,7 +355,7 @@ static inline int
 __gthread_objc_mutex_trylock (objc_mutex_t mutex)
 {
   if (__gthread_active_p ()
 __gthread_objc_mutex_trylock (objc_mutex_t mutex)
 {
   if (__gthread_active_p ()

-      && pthread_mutex_trylock ((pthread_mutex_t *) mutex->backend) != 1)
+      && __gthrw_(pthread_mutex_trylock) ((pthread_mutex_t *) mutex->backend) != 1)

     return -1;
 
   return 0;
     return -1;
 
   return 0;


@@ -350,7 +366,7 @@ static inline int
 __gthread_objc_mutex_unlock (objc_mutex_t mutex)
 {
   if (__gthread_active_p ())
 __gthread_objc_mutex_unlock (objc_mutex_t mutex)
 {
   if (__gthread_active_p ())

-    return pthread_mutex_unlock ((pthread_mutex_t *) mutex->backend);
+    return __gthrw_(pthread_mutex_unlock) ((pthread_mutex_t *) mutex->backend);

   else
     return 0;
 }
   else
     return 0;
 }


@@ -359,7 +375,8 @@ __gthread_objc_mutex_unlock (objc_mutex_t mutex)
 
 /* Allocate a condition.  */
 static inline int
 
 /* Allocate a condition.  */
 static inline int

-__gthread_objc_condition_allocate (objc_condition_t condition)
+__gthread_objc_condition_allocate (objc_condition_t condition
+                                  __attribute__ ((__unused__)))

 {
   if (__gthread_active_p ())
     /* Unimplemented.  */
 {
   if (__gthread_active_p ())
     /* Unimplemented.  */


@@ -370,7 +387,8 @@ __gthread_objc_condition_allocate (objc_condition_t condition)
 
 /* Deallocate a condition.  */
 static inline int
 
 /* Deallocate a condition.  */
 static inline int

-__gthread_objc_condition_deallocate (objc_condition_t condition)
+__gthread_objc_condition_deallocate (objc_condition_t condition
+                                    __attribute__ ((__unused__)))

 {
   if (__gthread_active_p ())
     /* Unimplemented.  */
 {
   if (__gthread_active_p ())
     /* Unimplemented.  */


@@ -381,7 +399,9 @@ __gthread_objc_condition_deallocate (objc_condition_t condition)
 
 /* Wait on the condition */
 static inline int
 
 /* Wait on the condition */
 static inline int

-__gthread_objc_condition_wait (objc_condition_t condition, objc_mutex_t mutex)
+__gthread_objc_condition_wait (objc_condition_t condition
+                              __attribute__ ((__unused__)),
+                              objc_mutex_t mutex __attribute__ ((__unused__)))

 {
   if (__gthread_active_p ())
     /* Unimplemented.  */
 {
   if (__gthread_active_p ())
     /* Unimplemented.  */


@@ -392,7 +412,8 @@ __gthread_objc_condition_wait (objc_condition_t condition, objc_mutex_t mutex)
 
 /* Wake up all threads waiting on this condition.  */
 static inline int
 
 /* Wake up all threads waiting on this condition.  */
 static inline int

-__gthread_objc_condition_broadcast (objc_condition_t condition)
+__gthread_objc_condition_broadcast (objc_condition_t condition
+                                   __attribute__ ((__unused__)))

 {
   if (__gthread_active_p ())
     /* Unimplemented.  */
 {
   if (__gthread_active_p ())
     /* Unimplemented.  */


@@ -403,7 +424,8 @@ __gthread_objc_condition_broadcast (objc_condition_t condition)
 
 /* Wake up one thread waiting on this condition.  */
 static inline int
 
 /* Wake up one thread waiting on this condition.  */
 static inline int

-__gthread_objc_condition_signal (objc_condition_t condition)
+__gthread_objc_condition_signal (objc_condition_t condition
+                                __attribute__ ((__unused__)))

 {
   if (__gthread_active_p ())
     /* Unimplemented.  */
 {
   if (__gthread_active_p ())
     /* Unimplemented.  */


@@ -415,117 +437,127 @@ __gthread_objc_condition_signal (objc_condition_t condition)
 #else /* _LIBOBJC */
 
 static inline int
 #else /* _LIBOBJC */
 
 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 pthread_once (once, func);
+    return __gthrw_(pthread_once) (__once, __func);

   else
     return -1;
 }
 
 static inline int
   else
     return -1;
 }
 
 static inline int

-__gthread_key_create (__gthread_key_t *key, void (*dtor) (void *))
+__gthread_key_create (__gthread_key_t *__key, void (*__dtor) (void *))

 {
 {

-  return pthread_keycreate (key, dtor);
+  return __gthrw_(pthread_keycreate) (__key, __dtor);

 }
 
 static inline int
 }
 
 static inline int

-__gthread_key_delete (UNUSED (__gthread_key_t key))
+__gthread_key_delete (__gthread_key_t __key __attribute__ ((__unused__)))

 {
   /* Operation is not supported.  */
   return -1;
 }
 
 static inline void *
 {
   /* Operation is not supported.  */
   return -1;
 }
 
 static inline void *

-__gthread_getspecific (__gthread_key_t key)
+__gthread_getspecific (__gthread_key_t __key)

 {
 {

-  void *ptr;
-  if (pthread_getspecific (key, &ptr) == 0)
-    return ptr;
+  void *__ptr;
+  if (__gthrw_(pthread_getspecific) (__key, &__ptr) == 0)
+    return __ptr;

   else
     return 0;
 }
 
 static inline int
   else
     return 0;
 }
 
 static inline int

-__gthread_setspecific (__gthread_key_t key, const void *ptr)
+__gthread_setspecific (__gthread_key_t __key, const void *__ptr)

 {
 {

-  return pthread_setspecific (key, (void *) ptr);
+  return __gthrw_(pthread_setspecific)
+    (__key, CONST_CAST2(void *, const void *, __ptr));

 }
 
 static inline void
 }
 
 static inline void

-__gthread_mutex_init_function (__gthread_mutex_t *mutex)
+__gthread_mutex_init_function (__gthread_mutex_t *__mutex)
+{
+  if (__gthread_active_p ())
+    __gthrw_(pthread_mutex_init) (__mutex, pthread_mutexattr_default);
+}
+
+static inline int
+__gthread_mutx_destroy (__gthread_mutex_t *__mutex)

 {
   if (__gthread_active_p ())
 {
   if (__gthread_active_p ())

-    pthread_mutex_init (mutex, pthread_mutexattr_default);
+    return __gthrw_(pthread_mutex_destroy) (__mutex);
+  else
+    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 pthread_mutex_lock (mutex);
+    return __gthrw_(pthread_mutex_lock) (__mutex);

   else
     return 0;
 }
 
 static inline int
   else
     return 0;
 }
 
 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 pthread_mutex_trylock (mutex);
+    return __gthrw_(pthread_mutex_trylock) (__mutex);

   else
     return 0;
 }
 
 static inline int
   else
     return 0;
 }
 
 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 pthread_mutex_unlock (mutex);
+    return __gthrw_(pthread_mutex_unlock) (__mutex);

   else
     return 0;
 }
 
 static inline int
   else
     return 0;
 }
 
 static inline int

-__gthread_recursive_mutex_init_function (__gthread_recursive_mutex_t *mutex)
+__gthread_recursive_mutex_init_function (__gthread_recursive_mutex_t *__mutex)

 {
   if (__gthread_active_p ())
     {
 {
   if (__gthread_active_p ())
     {

-      pthread_mutexattr_t attr;
-      int r;
-
-      r = pthread_mutexattr_create (&attr);
-      if (!r)
-       r = pthread_mutexattr_setkind_np (&attr, MUTEX_RECURSIVE_NP);
-      if (!r)
-       r = pthread_mutex_init (mutex, attr);
-      if (!r)
-       r = pthread_mutexattr_delete (&attr);
-      return r;
+      pthread_mutexattr_t __attr;
+      int __r;
+
+      __r = __gthrw_(pthread_mutexattr_create) (&__attr);
+      if (!__r)
+       __r = __gthrw_(pthread_mutexattr_setkind_np) (&__attr,
+                                                     MUTEX_RECURSIVE_NP);
+      if (!__r)
+       __r = __gthrw_(pthread_mutex_init) (__mutex, __attr);
+      if (!__r)
+       __r = __gthrw_(pthread_mutexattr_delete) (&__attr);
+      return __r;

     }
     }

+  return 0;

 }
 
 static inline int
 }
 
 static inline int

-__gthread_recursive_mutex_lock (__gthread_recursive_mutex_t *mutex)
+__gthread_recursive_mutex_lock (__gthread_recursive_mutex_t *__mutex)

 {
 {

-  return __gthread_mutex_lock (mutex);
+  return __gthread_mutex_lock (__mutex);

 }
 
 static inline int
 }
 
 static inline int

-__gthread_recursive_mutex_trylock (__gthread_recursive_mutex_t *mutex)
+__gthread_recursive_mutex_trylock (__gthread_recursive_mutex_t *__mutex)

 {
 {

-  return __gthread_mutex_trylock (mutex);
+  return __gthread_mutex_trylock (__mutex);

 }
 
 static inline int
 }
 
 static inline int

-__gthread_recursive_mutex_unlock (__gthread_recursive_mutex_t *mutex)
+__gthread_recursive_mutex_unlock (__gthread_recursive_mutex_t *__mutex)

 {
 {

-  return __gthread_mutex_unlock (mutex);
+  return __gthread_mutex_unlock (__mutex);

 }
 
 #endif /* _LIBOBJC */
 
 }
 
 #endif /* _LIBOBJC */
 

-#undef UNUSED
-

 #endif
 #endif /* ! GCC_GTHR_DCE_H */
 #endif
 #endif /* ! GCC_GTHR_DCE_H */