1998-09-21 Ben Elliston <bje@cygnus.com>

        * New directory.  Moved files from ../gcc/objc.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@22514 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 259 insertions, 0 deletions

diff --git a/libobjc/thr-solaris.c b/libobjc/thr-solaris.c
new file mode 100644
index 00000000000..90351b43cf6
--- /dev/null
+++ b/libobjc/thr-solaris.c
@@ -0,0 +1,259 @@
+/* GNU Objective C Runtime Thread Interface
+   Copyright (C) 1996, 1997 Free Software Foundation, Inc.
+   Contributed by Galen C. Hunt (gchunt@cs.rochester.edu)
+   Conditions added by Mircea Oancea (mircea@first.elcom.pub.ro)
+      
+This file is part of GNU CC.
+
+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.
+
+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.
+
+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.  */
+
+/* As a special exception, if you link this library with files compiled with
+   GCC to produce an executable, this does not 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.  */
+
+#include <objc/thr.h>
+#include "runtime.h"
+
+#include <thread.h>
+#include <synch.h>
+#include <errno.h>
+
+/* Key structure for maintaining thread specific storage */
+static thread_key_t     __objc_thread_data_key;
+
+/* Backend initialization functions */
+
+/* Initialize the threads subsystem. */
+int
+__objc_init_thread_system(void)
+{
+  /* Initialize the thread storage key */
+  if (thr_keycreate(&__objc_thread_data_key, NULL) == 0)
+    return 0;
+  else
+    return -1;
+}
+
+/* Close the threads subsystem. */
+int
+__objc_close_thread_system(void)
+{
+  return 0;
+}
+
+/* Backend thread functions */
+
+/* Create a new thread of execution. */
+objc_thread_t
+__objc_thread_detach(void (*func)(void *arg), void *arg)
+{
+  objc_thread_t thread_id;
+  thread_t new_thread_id = 0;
+
+  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. */
+int
+__objc_thread_set_priority(int priority)
+{
+  int sys_priority = 0;
+
+  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 (thr_setprio(thr_self(), sys_priority) == 0)
+    return 0;
+  else
+    return -1;
+}
+
+/* Return the current thread's priority. */
+int
+__objc_thread_get_priority(void)
+{
+  int sys_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. */
+void
+__objc_thread_yield(void)
+{
+  thr_yield();
+}
+
+/* Terminate the current thread. */
+int
+__objc_thread_exit(void)
+{
+  /* 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. */
+objc_thread_t
+__objc_thread_id(void)
+{
+  return (objc_thread_t)thr_self();
+}
+
+/* Sets the thread's local storage pointer. */
+int
+__objc_thread_set_data(void *value)
+{
+  if (thr_setspecific(__objc_thread_data_key, value) == 0)
+    return 0;
+  else
+    return -1;
+}
+
+/* Returns the thread's local storage pointer. */
+void *
+__objc_thread_get_data(void)
+{
+  void *value = NULL;
+
+  if (thr_getspecific(__objc_thread_data_key, &value) == 0)
+    return value;
+
+  return NULL;
+}
+
+/* Backend mutex functions */
+
+/* Allocate a mutex. */
+int
+__objc_mutex_allocate(objc_mutex_t mutex)
+{
+  if (mutex_init( (mutex_t *)(&(mutex->backend)), USYNC_THREAD, 0))
+    return -1;
+  else
+    return 0;
+}
+
+
+/* Deallocate a mutex. */
+int
+__objc_mutex_deallocate(objc_mutex_t mutex)
+{
+  mutex_destroy((mutex_t *)(&(mutex->backend)));
+  return 0;
+}
+
+/* Grab a lock on a mutex. */
+int
+__objc_mutex_lock(objc_mutex_t mutex)
+{
+  if (mutex_lock((mutex_t *)(&(mutex->backend))) != 0)
+    return -1;
+  else
+    return 0;
+}
+
+/* Try to grab a lock on a mutex. */
+int
+__objc_mutex_trylock(objc_mutex_t mutex)
+{
+  if (mutex_trylock((mutex_t *)(&(mutex->backend))) != 0)
+    return -1;
+  else
+    return 0;
+}
+
+/* Unlock the mutex */
+int
+__objc_mutex_unlock(objc_mutex_t mutex)
+{
+  if (mutex_unlock((mutex_t *)(&(mutex->backend))) != 0)
+    return -1;
+  else
+    return 0;
+}
+
+/* Backend condition mutex functions */
+
+/* Allocate a condition. */
+int
+__objc_condition_allocate(objc_condition_t condition)
+{
+  return cond_init((cond_t *)(&(condition->backend)), USYNC_THREAD, NULL);
+}
+
+/* Deallocate a condition. */
+int
+__objc_condition_deallocate(objc_condition_t condition)
+{
+  return cond_destroy((cond_t *)(&(condition->backend)));
+}
+
+/* Wait on the condition */
+int
+__objc_condition_wait(objc_condition_t condition, objc_mutex_t mutex)
+{
+  return cond_wait((cond_t *)(&(condition->backend)),
+		   (mutex_t *)(&(mutex->backend)));
+}
+
+/* Wake up all threads waiting on this condition. */
+int
+__objc_condition_broadcast(objc_condition_t condition)
+{
+  return cond_broadcast((cond_t *)(&(condition->backend)));
+}
+
+/* Wake up one thread waiting on this condition. */
+int
+__objc_condition_signal(objc_condition_t condition)
+{
+  return cond_signal((cond_t *)(&(condition->backend)));
+}
+
+/* End of File */