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Diffstat (limited to 'gnu/usr.bin/gcc/objc/thr-os2.c')
| -rw-r--r-- | gnu/usr.bin/gcc/objc/thr-os2.c | 267 |
1 files changed, 267 insertions, 0 deletions
diff --git a/gnu/usr.bin/gcc/objc/thr-os2.c b/gnu/usr.bin/gcc/objc/thr-os2.c new file mode 100644 index 00000000000..a0d7d436613 --- /dev/null +++ b/gnu/usr.bin/gcc/objc/thr-os2.c @@ -0,0 +1,267 @@ +/* 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 */ |