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72 lines
1.6 KiB
C
72 lines
1.6 KiB
C
/* radare - LGPL - Copyright 2009-2014 - pancake */
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#include <r_th.h>
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/* locks/mutex/sems */
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R_API RThreadLock *r_th_lock_new() {
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RThreadLock *thl = R_NEW(RThreadLock);
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if (thl) {
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thl->refs = 0;
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#if HAVE_PTHREAD
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pthread_mutex_init (&thl->lock, NULL);
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#elif __WIN32__ || __WINDOWS__ && !defined(__CYGWIN__)
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//thl->lock = CreateSemaphore(NULL, 0, 1, NULL);
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InitializeCriticalSection(&thl->lock);
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#endif
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}
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return thl;
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}
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R_API int r_th_lock_wait(RThreadLock *thl) {
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#if HAVE_PTHREAD
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r_th_lock_enter (thl);
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r_th_lock_enter (thl); // locks here
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r_th_lock_leave (thl); // releases previous mutex
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#elif __WIN32__ || __WINDOWS__ && !defined(__CYGWIN__)
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WaitForSingleObject (thl->lock, INFINITE);
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#else
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while (r_th_lock_check (thl));
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#endif
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return 0;
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}
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R_API int r_th_lock_enter(RThreadLock *thl) {
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#if HAVE_PTHREAD
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pthread_mutex_lock(&thl->lock);
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#elif __WIN32__ || __WINDOWS__ && !defined(__CYGWIN__)
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EnterCriticalSection (&thl->lock);
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#endif
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return ++thl->refs;
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}
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R_API int r_th_lock_leave(RThreadLock *thl) {
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#if HAVE_PTHREAD
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pthread_mutex_unlock (&thl->lock);
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#elif __WIN32__ || __WINDOWS__ && !defined(__CYGWIN__)
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LeaveCriticalSection (&thl->lock);
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//ReleaseSemaphore (thl->lock, 1, NULL);
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#endif
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if (thl->refs>0)
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thl->refs--;
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return thl->refs;
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}
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R_API int r_th_lock_check(RThreadLock *thl) {
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//w32 // TryEnterCriticalSection(&thl->lock);
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return thl->refs;
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}
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R_API void *r_th_lock_free(RThreadLock *thl) {
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if (thl) {
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#if HAVE_PTHREAD
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pthread_mutex_destroy (&thl->lock);
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#elif __WIN32__ || __WINDOWS__ && !defined(__CYGWIN__)
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DeleteCriticalSection (&thl->lock);
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CloseHandle (thl->lock);
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#endif
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free (thl);
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}
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return NULL;
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}
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