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* hash.c, init.c, libobjc.def, libobjc_entry.c, linking.m, makefile.dos, misc.c, nil_method.c, objects.c, sarray.c, selector.c, sendmsg.c, thr-dce.c, thr-decosf1.c, thr-irix.c, thr-mach.c, thr-objc.c, thr-os2.c, thr-posix.c, thr-pthreads.c, thr-rtems.c, thr-single.c, thr-solaris.c, thr-vxworks.c, thr-win32.c, thr.c: Replace "GNU CC" with "GCC". From-SVN: r67134
268 lines
5.5 KiB
C
268 lines
5.5 KiB
C
/* GNU Objective C Runtime Thread Interface - OS/2 emx Implementation
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Copyright (C) 1996, 1997 Free Software Foundation, Inc.
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Contributed by Thomas Baier (baier@ci.tuwien.ac.at)
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it under the
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terms of the GNU General Public License as published by the Free Software
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Foundation; either version 2, or (at your option) any later version.
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GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING. If not, write to
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the Free Software Foundation, 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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/* As a special exception, if you link this library with files compiled with
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GCC to produce an executable, this does not cause the resulting executable
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to be covered by the GNU General Public License. This exception does not
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however invalidate any other reasons why the executable file might be
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covered by the GNU General Public License. */
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#include <objc/thr.h>
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#include "runtime.h"
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#define INCL_DOSSEMAPHORES
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#define INCL_DOSPROCESS
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/*
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* conflicts with objc.h: SEL, BOOL, id
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* solution: prefixing those with _OS2_ before including <os2.h>
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*/
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#define SEL _OS2_SEL
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#define BOOL _OS2_BOOL
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#define id _OS2_id
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#include <os2.h>
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#undef id
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#undef SEL
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#undef BOOL
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#include <stdlib.h>
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/* Backend initialization functions */
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/* Initialize the threads subsystem. */
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int
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__objc_init_thread_system(void)
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{
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return 0;
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}
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/* Close the threads subsystem. */
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int
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__objc_close_thread_system(void)
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{
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return 0;
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}
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/* Backend thread functions */
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/* Create a new thread of execution. */
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objc_thread_t
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__objc_thread_detach(void (*func)(void *arg), void *arg)
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{
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int thread_id = 0;
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if ((thread_id = _beginthread (func,NULL,32768,arg)) < 0)
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thread_id = 0;
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return (objc_thread_t)thread_id;
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}
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/* Set the current thread's priority. */
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int
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__objc_thread_set_priority(int priority)
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{
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ULONG sys_class = 0;
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ULONG sys_priority = 0;
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/* OBJC_THREAD_INTERACTIVE_PRIORITY -> PRTYC_FOREGROUNDSERVER
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* OBJC_THREAD_BACKGROUND_PRIORITY -> PRTYC_REGULAR
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* OBJC_THREAD_LOW_PRIORITY -> PRTYC_IDLETIME */
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switch (priority) {
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case OBJC_THREAD_INTERACTIVE_PRIORITY:
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sys_class = PRTYC_REGULAR;
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sys_priority = 10;
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break;
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default:
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case OBJC_THREAD_BACKGROUND_PRIORITY:
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sys_class = PRTYC_IDLETIME;
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sys_priority = 25;
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break;
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case OBJC_THREAD_LOW_PRIORITY:
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sys_class = PRTYC_IDLETIME;
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sys_priority = 0;
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break;
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}
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/* Change priority */
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if (!DosSetPriority (PRTYS_THREAD,sys_class,sys_priority,*_threadid))
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return 0;
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else
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return -1;
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}
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/* Return the current thread's priority. */
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int
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__objc_thread_get_priority(void)
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{
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PTIB ptib;
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PPIB ppib;
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/* get information about current thread */
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DosGetInfoBlocks (&ptib,&ppib);
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switch (ptib->tib_ptib2->tib2_ulpri)
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{
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case PRTYC_IDLETIME:
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case PRTYC_REGULAR:
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case PRTYC_TIMECRITICAL:
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case PRTYC_FOREGROUNDSERVER:
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default:
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return OBJC_THREAD_INTERACTIVE_PRIORITY;
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}
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return -1;
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}
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/* Yield our process time to another thread. */
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void
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__objc_thread_yield(void)
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{
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DosSleep (0);
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}
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/* Terminate the current thread. */
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int
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__objc_thread_exit(void)
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{
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/* terminate the thread, NEVER use DosExit () */
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_endthread ();
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/* Failed if we reached here */
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return -1;
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}
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/* Returns an integer value which uniquely describes a thread. */
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objc_thread_t
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__objc_thread_id(void)
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{
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return (objc_thread_t) *_threadid;
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}
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/* Sets the thread's local storage pointer. */
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int
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__objc_thread_set_data(void *value)
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{
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*_threadstore () = value;
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return 0;
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}
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/* Returns the thread's local storage pointer. */
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void *
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__objc_thread_get_data(void)
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{
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return *_threadstore ();
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}
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/* Backend mutex functions */
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/* Allocate a mutex. */
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int
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__objc_mutex_allocate(objc_mutex_t mutex)
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{
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if (DosCreateMutexSem (NULL, (HMTX)(&(mutex->backend)),0L,0) > 0)
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return -1;
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else
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return 0;
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}
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/* Deallocate a mutex. */
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int
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__objc_mutex_deallocate(objc_mutex_t mutex)
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{
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DosCloseMutexSem ((HMTX)(mutex->backend));
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return 0;
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}
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/* Grab a lock on a mutex. */
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int
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__objc_mutex_lock(objc_mutex_t mutex)
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{
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if (DosRequestMutexSem ((HMTX)(mutex->backend),-1L) != 0)
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return -1;
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else
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return 0;
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}
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/* Try to grab a lock on a mutex. */
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int
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__objc_mutex_trylock(objc_mutex_t mutex)
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{
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if (DosRequestMutexSem ((HMTX)(mutex->backend),0L) != 0)
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return -1;
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else
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return 0;
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}
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/* Unlock the mutex */
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int
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__objc_mutex_unlock(objc_mutex_t mutex)
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{
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if (DosReleaseMutexSem((HMTX)(mutex->backend)) != 0)
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return -1;
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else
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return 0;
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}
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/* Backend condition mutex functions */
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/* Allocate a condition. */
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int
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__objc_condition_allocate(objc_condition_t condition)
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{
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/* Unimplemented. */
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return -1;
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}
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/* Deallocate a condition. */
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int
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__objc_condition_deallocate(objc_condition_t condition)
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{
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/* Unimplemented. */
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return -1;
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}
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/* Wait on the condition */
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int
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__objc_condition_wait(objc_condition_t condition, objc_mutex_t mutex)
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{
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/* Unimplemented. */
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return -1;
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}
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/* Wake up all threads waiting on this condition. */
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int
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__objc_condition_broadcast(objc_condition_t condition)
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{
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/* Unimplemented. */
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return -1;
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}
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/* Wake up one thread waiting on this condition. */
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int
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__objc_condition_signal(objc_condition_t condition)
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{
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/* Unimplemented. */
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return -1;
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}
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/* End of File */
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