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https://github.com/darlinghq/darling-libobjc2.git
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44 lines
1.4 KiB
C
44 lines
1.4 KiB
C
// libobjc requires recursive mutexes. These are delegated to the underlying
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// threading implementation.
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#ifndef __LIBOBJC_LOCK_H_INCLUDED__
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#define __LIBOBJC_LOCK_H_INCLUDED__
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#ifdef WIN32
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# include <windows.h>
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typedef HANDLE mutex_t;
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# define INIT_LOCK(x) x = CreateMutex(NULL, FALSE, NULL)
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# define LOCK(x) WaitForSingleObject(*x, INFINITE)
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# define UNLOCK(x) ReleaseMutex(*x)
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# define DESTROY_LOCK(x) CloseHandle(*x)
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#else
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# include <pthread.h>
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typedef pthread_mutex_t mutex_t;
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// If this pthread implementation has a static initializer for recursive
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// mutexes, use that, otherwise fall back to the portable version
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# ifdef PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP
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# define INIT_LOCK(x) x = PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP
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# elif defined(PTHREAD_RECURSIVE_MUTEX_INITIALIZER)
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# define INIT_LOCK(x) x = PTHREAD_RECURSIVE_MUTEX_INITIALIZER
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# else
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# define INIT_LOCK(x) init_recursive_mutex(&(x))
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static inline void init_recursive_mutex(pthread_mutex_t *x)
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{
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pthread_mutexattr_t recursiveAttributes;
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pthread_mutexattr_init(&recursiveAttributes);
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pthread_mutexattr_settype(&recursiveAttributes, PTHREAD_MUTEX_RECURSIVE);
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pthread_mutex_init(x, &recursiveAttributes);
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pthread_mutexattr_destroy(&recursiveAttributes);
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}
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# endif
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# define LOCK(x) pthread_mutex_lock(x)
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# define UNLOCK(x) pthread_mutex_unlock(x)
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# define DESTROY_LOCK(x) pthread_mutex_destroy(x)
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#endif
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#endif // __LIBOBJC_LOCK_H_INCLUDED__
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