mirror of
git://gcc.gnu.org/git/gcc.git
synced 2024-12-30 01:45:05 +08:00
88e17b57eb
* New directory. Moved files from ../gcc/objc. From-SVN: r22514
268 lines
5.5 KiB
C
268 lines
5.5 KiB
C
/* GNU Objective C Runtime Thread Interface - OS/2 emx Implementation
|
|
Copyright (C) 1996, 1997 Free Software Foundation, Inc.
|
|
Contributed by Thomas Baier (baier@ci.tuwien.ac.at)
|
|
|
|
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"
|
|
|
|
#define INCL_DOSSEMAPHORES
|
|
#define INCL_DOSPROCESS
|
|
|
|
/*
|
|
* conflicts with objc.h: SEL, BOOL, id
|
|
* solution: prefixing those with _OS2_ before including <os2.h>
|
|
*/
|
|
#define SEL _OS2_SEL
|
|
#define BOOL _OS2_BOOL
|
|
#define id _OS2_id
|
|
#include <os2.h>
|
|
#undef id
|
|
#undef SEL
|
|
#undef BOOL
|
|
|
|
#include <stdlib.h>
|
|
|
|
/* Backend initialization functions */
|
|
|
|
/* Initialize the threads subsystem. */
|
|
int
|
|
__objc_init_thread_system(void)
|
|
{
|
|
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)
|
|
{
|
|
int thread_id = 0;
|
|
|
|
if ((thread_id = _beginthread (func,NULL,32768,arg)) < 0)
|
|
thread_id = 0;
|
|
|
|
return (objc_thread_t)thread_id;
|
|
}
|
|
|
|
/* Set the current thread's priority. */
|
|
int
|
|
__objc_thread_set_priority(int priority)
|
|
{
|
|
ULONG sys_class = 0;
|
|
ULONG sys_priority = 0;
|
|
|
|
/* OBJC_THREAD_INTERACTIVE_PRIORITY -> PRTYC_FOREGROUNDSERVER
|
|
* OBJC_THREAD_BACKGROUND_PRIORITY -> PRTYC_REGULAR
|
|
* OBJC_THREAD_LOW_PRIORITY -> PRTYC_IDLETIME */
|
|
|
|
switch (priority) {
|
|
case OBJC_THREAD_INTERACTIVE_PRIORITY:
|
|
sys_class = PRTYC_REGULAR;
|
|
sys_priority = 10;
|
|
break;
|
|
default:
|
|
case OBJC_THREAD_BACKGROUND_PRIORITY:
|
|
sys_class = PRTYC_IDLETIME;
|
|
sys_priority = 25;
|
|
break;
|
|
case OBJC_THREAD_LOW_PRIORITY:
|
|
sys_class = PRTYC_IDLETIME;
|
|
sys_priority = 0;
|
|
break;
|
|
}
|
|
|
|
/* Change priority */
|
|
if (!DosSetPriority (PRTYS_THREAD,sys_class,sys_priority,*_threadid))
|
|
return 0;
|
|
else
|
|
return -1;
|
|
}
|
|
|
|
/* Return the current thread's priority. */
|
|
int
|
|
__objc_thread_get_priority(void)
|
|
{
|
|
PTIB ptib;
|
|
PPIB ppib;
|
|
|
|
/* get information about current thread */
|
|
DosGetInfoBlocks (&ptib,&ppib);
|
|
|
|
switch (ptib->tib_ptib2->tib2_ulpri)
|
|
{
|
|
case PRTYC_IDLETIME:
|
|
case PRTYC_REGULAR:
|
|
case PRTYC_TIMECRITICAL:
|
|
case PRTYC_FOREGROUNDSERVER:
|
|
default:
|
|
return OBJC_THREAD_INTERACTIVE_PRIORITY;
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
/* Yield our process time to another thread. */
|
|
void
|
|
__objc_thread_yield(void)
|
|
{
|
|
DosSleep (0);
|
|
}
|
|
|
|
/* Terminate the current thread. */
|
|
int
|
|
__objc_thread_exit(void)
|
|
{
|
|
/* terminate the thread, NEVER use DosExit () */
|
|
_endthread ();
|
|
|
|
/* 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) *_threadid;
|
|
}
|
|
|
|
/* Sets the thread's local storage pointer. */
|
|
int
|
|
__objc_thread_set_data(void *value)
|
|
{
|
|
*_threadstore () = value;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Returns the thread's local storage pointer. */
|
|
void *
|
|
__objc_thread_get_data(void)
|
|
{
|
|
return *_threadstore ();
|
|
}
|
|
|
|
/* Backend mutex functions */
|
|
|
|
/* Allocate a mutex. */
|
|
int
|
|
__objc_mutex_allocate(objc_mutex_t mutex)
|
|
{
|
|
if (DosCreateMutexSem (NULL, (HMTX)(&(mutex->backend)),0L,0) > 0)
|
|
return -1;
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
/* Deallocate a mutex. */
|
|
int
|
|
__objc_mutex_deallocate(objc_mutex_t mutex)
|
|
{
|
|
DosCloseMutexSem ((HMTX)(mutex->backend));
|
|
return 0;
|
|
}
|
|
|
|
/* Grab a lock on a mutex. */
|
|
int
|
|
__objc_mutex_lock(objc_mutex_t mutex)
|
|
{
|
|
if (DosRequestMutexSem ((HMTX)(mutex->backend),-1L) != 0)
|
|
return -1;
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
/* Try to grab a lock on a mutex. */
|
|
int
|
|
__objc_mutex_trylock(objc_mutex_t mutex)
|
|
{
|
|
if (DosRequestMutexSem ((HMTX)(mutex->backend),0L) != 0)
|
|
return -1;
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
/* Unlock the mutex */
|
|
int
|
|
__objc_mutex_unlock(objc_mutex_t mutex)
|
|
{
|
|
if (DosReleaseMutexSem((HMTX)(mutex->backend)) != 0)
|
|
return -1;
|
|
else
|
|
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 */
|