X-Git-Url: http://git.sourceforge.jp/view?a=blobdiff_plain;f=gcc%2Fgthr-solaris.h;h=0ad6194081b1426ba04f5f1c0c81ea7691eb7d0f;hb=d5a2461c1a136c27c301e94bc1696243ac6479d4;hp=465ececb13947c4ce90bccec62ea4853d133864b;hpb=58febf9e878b004af36d51b927d91dbe4a9e0af0;p=pf3gnuchains%2Fgcc-fork.git

diff --git a/gcc/gthr-solaris.h b/gcc/gthr-solaris.h
index 465ececb139..0ad6194081b 100644
--- a/gcc/gthr-solaris.h
+++ b/gcc/gthr-solaris.h
@@ -1,23 +1,23 @@
-/* Threads compatibily routines for libgcc2.  */
+/* Threads compatibility routines for libgcc2 and libobjc.  */
 /* Compile this one with gcc.  */
-/* Copyright (C) 1997 Free Software Foundation, Inc.
+/* Copyright (C) 1997, 1999, 2000 Free Software Foundation, Inc.
 
-This file is part of GNU CC.
+This file is part of GCC.
 
-GNU CC 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 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.
 
-GNU CC 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.
+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 GNU CC; see the file COPYING.  If not, write to
-the Free Software Foundation, 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA.  */
+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.  */
 
 /* As a special exception, if you link this library with other files,
    some of which are compiled with GCC, to produce an executable,
@@ -26,12 +26,12 @@ Boston, MA 02111-1307, USA.  */
    This exception does not however invalidate any other reasons why
    the executable file might be covered by the GNU General Public License.  */
 
-#ifndef __gthr_solaris_h
-#define __gthr_solaris_h
+#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. */
+   know if anyone else implements these.  */
 
 #define __GTHREADS 1
 
@@ -60,43 +60,341 @@ typedef mutex_t __gthread_mutex_t;
 #pragma weak mutex_trylock
 #pragma weak mutex_unlock
 
-/* This will not actually work in Solaris 2.5, since libc contains
-   dummy symbols of all thr_* routines. */
+#ifdef _LIBOBJC
+#pragma weak thr_exit
+#pragma weak thr_keycreate
+#pragma weak thr_getprio
+#pragma weak thr_self
+#pragma weak thr_setprio
+#pragma weak thr_yield
+
+#pragma weak cond_init
+#pragma weak cond_destroy
+#pragma weak cond_wait
+#pragma weak cond_broadcast
+#pragma weak cond_signal
 
-static void *__gthread_active_ptr = &thr_create;
+#pragma weak mutex_init
+#pragma weak mutex_destroy
+#endif
+
+/* This will not actually work in Solaris 2.5, since libc contains
+   dummy symbols of all thr_* routines.  */
 
 static inline int
-__gthread_active_p ()
+__gthread_active_p (void)
 {
+  static void *const __gthread_active_ptr = (void *) &thr_create;
   return __gthread_active_ptr != 0;
 }
 
 #else /* not SUPPORTS_WEAK */
 
 static inline int
-__gthread_active_p ()
+__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_once (__gthread_once_t *once, void (*func) ())
+__gthread_objc_init_thread_system(void)
 {
-  if (! __gthread_active_p ())
+  /* Initialize the thread storage key */
+  if (__gthread_active_p ()
+      && 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 (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;
 
-  if (once == 0 || func == 0)
+  switch (priority)
     {
-      errno = EINVAL;
-      return -1;
+    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;
     }
 
-  if (once->once == 0)
+  /* Change priority */
+  if (thr_setprio(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 (thr_getprio(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 ())
+    thr_yield();
+}
+
+/* Terminate the current thread.  */
+static inline int
+__gthread_objc_thread_exit(void)
+{
+  if (__gthread_active_p ())
+    /* exit the thread */
+    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)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 (mutex_lock (&once->mutex) != 0)
+      if (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 (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 ()
+      && 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 ())
+    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 ()
+      && 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 ()
+      && 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 ()
+      && 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 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 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 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 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 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 = mutex_lock (&once->mutex);
+      if (status != 0)
+	return status;
       if (once->once == 0)
 	{
 	  (*func) ();
@@ -111,9 +409,9 @@ 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. */
+     got a reasonable key value, and if not, fail.  */
   *key = -1;
-  if (thr_keycreate (key, dtor) == -1 || *key == -1)
+  if (thr_keycreate (key, dtor) != 0 || *key == -1)
     return -1;
   else
     return 0;
@@ -122,14 +420,14 @@ __gthread_key_create (__gthread_key_t *key, void (*dtor) (void *))
 static inline int
 __gthread_key_dtor (__gthread_key_t key, void *ptr)
 {
-  /* Nothing needed. */
+  /* Nothing needed.  */
   return 0;
 }
 
 static inline int
 __gthread_key_delete (__gthread_key_t key)
 {
-  /* Not possible. */
+  /* Not possible.  */
   return -1;
 }
 
@@ -176,4 +474,6 @@ __gthread_mutex_unlock (__gthread_mutex_t *mutex)
     return 0;
 }
 
-#endif /* not __gthr_solaris_h */
+#endif /* _LIBOBJC */
+
+#endif /* ! GCC_GTHR_SOLARIS_H */