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/*
* $XConsortium: Xthreads.h,v 1.18 95/04/07 19:22:33 kaleb Exp kaleb $
*
*
Copyright (c) 1993 X Consortium
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
Except as contained in this notice, the name of the X Consortium shall not be
used in advertising or otherwise to promote the sale, use or other dealings
in this Software without prior written authorization from the X Consortium.
* *
*/
#ifndef _XTHREADS_H_
#define _XTHREADS_H_
/* Redefine these to XtMalloc/XtFree or whatever you want before including
* this header file.
*/
#ifndef xmalloc
#define xmalloc malloc
#endif
#ifndef xfree
#define xfree free
#endif
#ifdef CTHREADS
#include <cthreads.h>
typedef cthread_t xthread_t;
typedef struct condition xcondition_rec;
typedef struct mutex xmutex_rec;
#define xthread_init() cthread_init()
#define xthread_self cthread_self
#define xthread_fork(func,closure) cthread_fork(func,closure)
#define xthread_yield() cthread_yield()
#define xthread_exit(v) cthread_exit(v)
#define xthread_set_name(t,str) cthread_set_name(t,str)
#define xmutex_init(m) mutex_init(m)
#define xmutex_clear(m) mutex_clear(m)
#define xmutex_lock(m) mutex_lock(m)
#define xmutex_unlock(m) mutex_unlock(m)
#define xmutex_set_name(m,str) mutex_set_name(m,str)
#define xcondition_init(cv) condition_init(cv)
#define xcondition_clear(cv) condition_clear(cv)
#define xcondition_wait(cv,m) condition_wait(cv,m)
#define xcondition_signal(cv) condition_signal(cv)
#define xcondition_broadcast(cv) condition_broadcast(cv)
#define xcondition_set_name(cv,str) condition_set_name(cv,str)
#else
#ifdef SVR4
#include <thread.h>
#include <synch.h>
typedef thread_t xthread_t;
typedef cond_t xcondition_rec;
typedef mutex_t xmutex_rec;
#define xthread_self thr_self
#define xthread_fork(func,closure) thr_create(NULL,0,func,closure,THR_NEW_LWP|THR_DETACHED,NULL)
#define xthread_yield() thr_yield()
#define xthread_exit(v) thr_exit(v)
#define xmutex_init(m) mutex_init(m,USYNC_THREAD,0)
#define xmutex_clear(m) mutex_destroy(m)
#define xmutex_lock(m) mutex_lock(m)
#define xmutex_unlock(m) mutex_unlock(m)
#define xcondition_init(cv) cond_init(cv,USYNC_THREAD,0)
#define xcondition_clear(cv) cond_destroy(cv)
#define xcondition_wait(cv,m) cond_wait(cv,m)
#define xcondition_signal(cv) cond_signal(cv)
#define xcondition_broadcast(cv) cond_broadcast(cv)
#else
#ifdef WIN32
#define BOOL wBOOL
#ifdef Status
#undef Status
#define Status wStatus
#endif
#include <windows.h>
#ifdef Status
#undef Status
#define Status int
#endif
#undef BOOL
typedef DWORD xthread_t;
struct _xthread_waiter {
HANDLE sem;
struct _xthread_waiter *next;
};
typedef struct {
CRITICAL_SECTION cs;
struct _xthread_waiter *waiters;
} xcondition_rec;
typedef CRITICAL_SECTION xmutex_rec;
#define xthread_init() _Xthread_init()
#define xthread_self GetCurrentThreadId
#define xthread_fork(func,closure) { \
DWORD _tmptid; \
CreateThread(NULL, 0, (LPTHREAD_START_ROUTINE)func, (LPVOID)closure, 0, \
&_tmptid); \
}
#define xthread_yield() Sleep(0)
#define xthread_exit(v) ExitThread((DWORD)(v))
#define xmutex_init(m) InitializeCriticalSection(m)
#define xmutex_clear(m) DeleteCriticalSection(m)
#define _XMUTEX_NESTS
#define xmutex_lock(m) EnterCriticalSection(m)
#define xmutex_unlock(m) LeaveCriticalSection(m)
#define xcondition_init(cv) { \
InitializeCriticalSection(&(cv)->cs); \
(cv)->waiters = NULL; \
}
#define xcondition_clear(cv) DeleteCriticalSection(&(cv)->cs)
extern struct _xthread_waiter *_Xthread_waiter();
#define xcondition_wait(cv,m) { \
struct _xthread_waiter *_tmpthr = _Xthread_waiter(); \
EnterCriticalSection(&(cv)->cs); \
_tmpthr->next = (cv)->waiters; \
(cv)->waiters = _tmpthr; \
LeaveCriticalSection(&(cv)->cs); \
LeaveCriticalSection(m); \
WaitForSingleObject(_tmpthr->sem, INFINITE); \
EnterCriticalSection(m); \
}
#define xcondition_signal(cv) { \
EnterCriticalSection(&(cv)->cs); \
if ((cv)->waiters) { \
ReleaseSemaphore((cv)->waiters->sem, 1, NULL); \
(cv)->waiters = (cv)->waiters->next; \
} \
LeaveCriticalSection(&(cv)->cs); \
}
#define xcondition_broadcast(cv) { \
struct _xthread_waiter *_tmpthr; \
EnterCriticalSection(&(cv)->cs); \
for (_tmpthr = (cv)->waiters; _tmpthr; _tmpthr = _tmpthr->next) \
ReleaseSemaphore(_tmpthr->sem, 1, NULL); \
(cv)->waiters = NULL; \
LeaveCriticalSection(&(cv)->cs); \
}
#else
#include <pthread.h>
#ifdef AIXV3
#ifndef _AIX32_THREADS
#define POSIX_DRAFT7_THREADS
#endif
#endif
/*
* The above would probably be better handled with an imake config
* variable, but since AIX 4.X seems to be the only platform implementing
* the draft 7 API, this will suffice for now. An imake config variable
* would also require changes to the Xlib and Xt Imakefiles to compile
* Xlib's locking.c and Xt's Threads.c, so this has less impact.
*/
typedef pthread_t xthread_t;
typedef pthread_cond_t xcondition_rec;
typedef pthread_mutex_t xmutex_rec;
#define xthread_self pthread_self
#define xthread_yield() pthread_yield()
#define xthread_exit(v) pthread_exit(v)
#define xmutex_clear(m) pthread_mutex_destroy(m)
#define xmutex_lock(m) pthread_mutex_lock(m)
#define xmutex_unlock(m) pthread_mutex_unlock(m)
#ifndef POSIX_DRAFT7_THREADS
#define xthread_fork(func,closure) { pthread_t _tmpxthr; \
pthread_create(&_tmpxthr,pthread_attr_default,func,closure); }
#define xmutex_init(m) pthread_mutex_init(m, pthread_mutexattr_default)
#define xcondition_init(c) pthread_cond_init(c, pthread_condattr_default)
#else /* POSIX_DRAFT7_THREADS */
#define xthread_fork(func,closure) { pthread_t _tmpxthr; \
pthread_create(&_tmpxthr,&pthread_attr_default,func,closure); }
#define xmutex_init(m) \
pthread_mutex_init(m, &pthread_mutexattr_default)
#define xcondition_init(c) \
pthread_cond_init(c, &pthread_condattr_default)
#endif /* POSIX_DRAFT7_THREADS */
#define xcondition_clear(c) pthread_cond_destroy(c)
#define xcondition_wait(c,m) pthread_cond_wait(c,m)
#define xcondition_signal(c) pthread_cond_signal(c)
#define xcondition_broadcast(c) pthread_cond_broadcast(c)
#ifdef _DECTHREADS_
static xthread_t _X_no_thread_id;
#define xthread_have_id(id) !pthread_equal(id, _X_no_thread_id)
#define xthread_clear_id(id) id = _X_no_thread_id
#define xthread_equal(id1,id2) pthread_equal(id1, id2)
#endif /* _DECTHREADS_ */
#if _CMA_VENDOR_ == _CMA__IBM
#ifdef DEBUG /* too much of a hack to enable normally */
/* see also cma__obj_set_name() */
#define xmutex_set_name(m,str) ((char**)(m)->field1)[5] = (str)
#define xcondition_set_name(cv,str) ((char**)(cv)->field1)[5] = (str)
#endif /* DEBUG */
#endif /* _CMA_VENDOR_ == _CMA__IBM */
#endif /* WIN32 */
#endif /* sun */
#endif /* CTHREADS */
typedef xcondition_rec *xcondition_t;
typedef xmutex_rec *xmutex_t;
#ifndef xcondition_malloc
#define xcondition_malloc() (xcondition_t)xmalloc(sizeof(xcondition_rec))
#endif
#ifndef xcondition_free
#define xcondition_free(c) xfree((char *)c)
#endif
#ifndef xmutex_malloc
#define xmutex_malloc() (xmutex_t)xmalloc(sizeof(xmutex_rec))
#endif
#ifndef xmutex_free
#define xmutex_free(m) xfree((char *)m)
#endif
#ifndef xthread_have_id
#define xthread_have_id(id) id
#endif
#ifndef xthread_clear_id
#define xthread_clear_id(id) id = 0
#endif
#ifndef xthread_equal
#define xthread_equal(id1,id2) ((id1) == (id2))
#endif
/* aids understood by some debuggers */
#ifndef xthread_set_name
#define xthread_set_name(t,str)
#endif
#ifndef xmutex_set_name
#define xmutex_set_name(m,str)
#endif
#ifndef xcondition_set_name
#define xcondition_set_name(cv,str)
#endif
#endif /* _XTHREADS_H_ */
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