+++ /dev/null
-/* GNU Objective C Runtime Thread Interface - SGI IRIX Implementation
- Copyright (C) 1996, 1997 Free Software Foundation, Inc.
- Contributed by Galen C. Hunt (gchunt@cs.rochester.edu)
-
-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 <stdlib.h>
-#include <sys/types.h>
-#include <sys/sysmp.h>
-#include <sys/prctl.h>
-#include <ulocks.h>
-#include <objc/thr.h>
-#include "runtime.h"
-
-/* Key structure for maintaining thread specific storage */
-static void * __objc_shared_arena_handle = NULL;
-
-/* Backend initialization functions */
-
-/* Initialize the threads subsystem. */
-int
-__objc_init_thread_system(void)
-{
- /* Name of IRIX arena. */
- char arena_name[64];
-
- DEBUG_PRINTF("__objc_init_thread_system\n");
-
- /* Construct a temporary name for arena. */
- sprintf(arena_name, "/usr/tmp/objc_%05u", (unsigned)getpid());
-
- /* Up to 256 threads. Arena only for threads. */
- usconfig(CONF_INITUSERS, 256);
- usconfig(CONF_ARENATYPE, US_SHAREDONLY);
-
- /* Initialize the arena */
- if (!(__objc_shared_arena_handle = usinit(arena_name)))
- /* Failed */
- return -1;
-
- return 0;
-}
-
-/* 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;
- int sys_id;
-
- if ((sys_id = sproc((void *)func, PR_SALL, arg)) >= 0)
- thread_id = (objc_thread_t)sys_id;
- else
- thread_id = NULL;
-
- return thread_id;
-}
-
-/* Set the current thread's priority. */
-int
-__objc_thread_set_priority(int priority)
-{
- /* Not implemented yet */
- return -1;
-}
-
-/* Return the current thread's priority. */
-int
-__objc_thread_get_priority(void)
-{
- /* Not implemented yet */
- return OBJC_THREAD_INTERACTIVE_PRIORITY;
-}
-
-/* Yield our process time to another thread. */
-void
-__objc_thread_yield(void)
-{
- sginap(0);
-}
-
-/* Terminate the current thread. */
-int
-__objc_thread_exit(void)
-{
- /* IRIX only has exit. */
- 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)
-{
- /* Threads are processes. */
- return (objc_thread_t)get_pid();
-}
-
-/* Sets the thread's local storage pointer. */
-int
-__objc_thread_set_data(void *value)
-{
- *((void **)&PRDA->usr_prda) = value;
- return 0;
-}
-
-/* Returns the thread's local storage pointer. */
-void *
-__objc_thread_get_data(void)
-{
- return *((void **)&PRDA->usr_prda);
-}
-
-/* Backend mutex functions */
-
-/* Allocate a mutex. */
-int
-__objc_mutex_allocate(objc_mutex_t mutex)
-{
- if (!( (ulock_t)(mutex->backend) = usnewlock(__objc_shared_arena_handle) ))
- return -1;
- else
- return 0;
-}
-
-/* Deallocate a mutex. */
-int
-__objc_mutex_deallocate(objc_mutex_t mutex)
-{
- usfreelock((ulock_t)(mutex->backend), __objc_shared_arena_handle);
- return 0;
-}
-
-/* Grab a lock on a mutex. */
-int
-__objc_mutex_lock(objc_mutex_t mutex)
-{
- if (ussetlock((ulock_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 (ustestlock((ulock_t)(mutex->backend)) == 0)
- return -1;
- else
- return 0;
-}
-
-/* Unlock the mutex */
-int
-__objc_mutex_unlock(objc_mutex_t mutex)
-{
- usunsetlock((ulock_t)(mutex->backend));
- return 0;
-}
-
-/* Backend condition mutex functions */
-
-/* Allocate a condition. */
-int
-__objc_condition_allocate(objc_condition_t condition)
-{
- /* Unimplemented. */
- return -1;
-}
-
-/* Deallocate a condition. */
-int
-__objc_condition_deallocate(objc_condition_t condition)
-{
- /* Unimplemented. */
- return -1;
-}
-
-/* Wait on the condition */
-int
-__objc_condition_wait(objc_condition_t condition, objc_mutex_t mutex)
-{
- /* Unimplemented. */
- return -1;
-}
-
-/* Wake up all threads waiting on this condition. */
-int
-__objc_condition_broadcast(objc_condition_t condition)
-{
- /* Unimplemented. */
- return -1;
-}
-
-/* Wake up one thread waiting on this condition. */
-int
-__objc_condition_signal(objc_condition_t condition)
-{
- /* Unimplemented. */
- return -1;
-}
-
-/* End of File */
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