Chris Robinson
a5f68c2121
Although it cant potentially be better than a regular atomic, it presents compatibility issues when non-C11 atomics are mixed with C++
33 lines
736 B
C
33 lines
736 B
C
#ifndef AL_RWLOCK_H
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#define AL_RWLOCK_H
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#include "bool.h"
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#include "atomic.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef struct {
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RefCount read_count;
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RefCount write_count;
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ATOMIC(int) read_lock;
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ATOMIC(int) read_entry_lock;
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ATOMIC(int) write_lock;
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} RWLock;
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#define RWLOCK_STATIC_INITIALIZE { ATOMIC_INIT_STATIC(0), ATOMIC_INIT_STATIC(0), \
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ATOMIC_INIT_STATIC(0), ATOMIC_INIT_STATIC(0), \
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ATOMIC_INIT_STATIC(0) }
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void RWLockInit(RWLock *lock);
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void ReadLock(RWLock *lock);
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void ReadUnlock(RWLock *lock);
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void WriteLock(RWLock *lock);
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void WriteUnlock(RWLock *lock);
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#ifdef __cplusplus
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}
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#endif
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#endif /* AL_RWLOCK_H */
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