+++ /dev/null
-/* GNU Objective C Runtime Thread Interface
- 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 <pthread.h>
-#include <thr.h>
-#include "runtime.h"
-
-/* Key structure for maintaining thread specific storage */
-static pthread_key_t _objc_thread_storage;
-
-/* Backend initialization functions */
-
-/* Initialize the threads subsystem. */
-int
-__objc_init_thread_system(void)
-{
- /* Initialize the thread storage key */
- return pthread_keycreate(&_objc_thread_storage, NULL);
-}
-
-/* Close the threads subsystem. */
-int
-__objc_close_thread_system(void)
-{
- /* Destroy the thread storage key */
- /* Not implemented yet */
- /* return pthread_key_delete(&_objc_thread_storage); */
- 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;
- pthread_t new_thread_handle;
-
- if (pthread_create(&new_thread_handle, pthread_attr_default,
- (void *)func, arg) == 0)
- {
- /* ??? May not work! (64bit) */
- thread_id = *(objc_thread_t *)&new_thread_handle;
- pthread_detach(&new_thread_handle); /* Fully detach thread. */
- }
- 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 = (PRI_FG_MIN_NP + PRI_FG_MAX_NP) / 2;
- break;
- default:
- case OBJC_THREAD_BACKGROUND_PRIORITY:
- sys_priority = (PRI_BG_MIN_NP + PRI_BG_MAX_NP) / 2;
- break;
- case OBJC_THREAD_LOW_PRIORITY:
- sys_priority = (PRI_BG_MIN_NP + PRI_BG_MAX_NP) / 2;
- break;
- }
-
- /* Change the priority. */
- if (pthread_setprio(pthread_self(), sys_priority) >= 0)
- return 0;
- else
- /* Failed */
- return -1;
-}
-
-/* Return the current thread's priority. */
-int
-__objc_thread_get_priority(void)
-{
- int sys_priority;
-
- if ((sys_priority = pthread_getprio(pthread_self())) >= 0) {
- if (sys_priority >= PRI_FG_MIN_NP && sys_priority <= PRI_FG_MAX_NP)
- return OBJC_THREAD_INTERACTIVE_PRIORITY;
- if (sys_priority >= PRI_BG_MIN_NP && sys_priority <= PRI_BG_MAX_NP)
- return OBJC_THREAD_BACKGROUND_PRIORITY;
- return OBJC_THREAD_LOW_PRIORITY;
- }
-
- /* Failed */
- return -1;
-}
-
-/* Yield our process time to another thread. */
-void
-__objc_thread_yield(void)
-{
- pthread_yield();
-}
-
-/* Terminate the current thread. */
-int
-__objc_thread_exit(void)
-{
- /* exit the thread */
- pthread_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)
-{
- pthread_t self = pthread_self();
-
- return (objc_thread_t) pthread_getunique_np (&self);
-}
-
-/* Sets the thread's local storage pointer. */
-int
-__objc_thread_set_data(void *value)
-{
- return pthread_setspecific(_objc_thread_storage, value);
-}
-
-/* Returns the thread's local storage pointer. */
-void *
-__objc_thread_get_data(void)
-{
- void *value = NULL;
-
- if ( !(pthread_getspecific(_objc_thread_storage, &value)) )
- return value;
-
- return NULL;
-}
-
-/* Backend mutex functions */
-
-/* Allocate a mutex. */
-int
-__objc_mutex_allocate(objc_mutex_t mutex)
-{
- if (pthread_mutex_init((pthread_mutex_t *)(&(mutex->backend)),
- pthread_mutexattr_default))
- return -1;
- else
- return 0;
-}
-
-/* Deallocate a mutex. */
-int
-__objc_mutex_deallocate(objc_mutex_t mutex)
-{
- if (pthread_mutex_destroy((pthread_mutex_t *)(&(mutex->backend))))
- return -1;
- else
- return 0;
-}
-
-/* Grab a lock on a mutex. */
-int
-__objc_mutex_lock(objc_mutex_t mutex)
-{
- return pthread_mutex_lock((pthread_mutex_t *)(&(mutex->backend)));
-}
-
-/* Try to grab a lock on a mutex. */
-int
-__objc_mutex_trylock(objc_mutex_t mutex)
-{
- if (pthread_mutex_trylock((pthread_mutex_t *)(&(mutex->backend))) != 1)
- return -1;
- else
- return 0;
-}
-
-/* Unlock the mutex */
-int
-__objc_mutex_unlock(objc_mutex_t mutex)
-{
- return pthread_mutex_unlock((pthread_mutex_t *)(&(mutex->backend)));
-}
-
-/* Backend condition mutex functions */
-
-/* Allocate a condition. */
-int
-__objc_condition_allocate(objc_condition_t condition)
-{
- /* Unimplemented. */
- return -1;
-
- /*
- if (pthread_cond_init((pthread_cond_t *)(&(condition->backend)), NULL))
- return -1;
- else
- return 0;
- */
-}
-
-/* Deallocate a condition. */
-int
-__objc_condition_deallocate(objc_condition_t condition)
-{
- /* Unimplemented. */
- return -1;
-
- /*
- return pthread_cond_destroy((pthread_cond_t *)(&(condition->backend)));
- */
-}
-
-/* Wait on the condition */
-int
-__objc_condition_wait(objc_condition_t condition, objc_mutex_t mutex)
-{
- /* Unimplemented. */
- return -1;
-
- /*
- return pthread_cond_wait((pthread_cond_t *)(&(condition->backend)),
- (pthread_mutex_t *)(&(mutex->backend)));
- */
-}
-
-/* Wake up all threads waiting on this condition. */
-int
-__objc_condition_broadcast(objc_condition_t condition)
-{
- /* Unimplemented. */
- return -1;
-
- /*
- return pthread_cond_broadcast((pthread_cond_t *)(&(condition->backend)));
- */
-}
-
-/* Wake up one thread waiting on this condition. */
-int
-__objc_condition_signal(objc_condition_t condition)
-{
- /* Unimplemented. */
- return -1;
-
- /*
- return pthread_cond_signal((pthread_cond_t *)(&(condition->backend)));
- */
-}
-
-/* End of File */
projects / msp430-gcc.git / blobdiff