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24 lines
946 B
C
24 lines
946 B
C
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#ifndef COSMOPOLITAN_LIBC_THREAD_LOCK_H_
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#define COSMOPOLITAN_LIBC_THREAD_LOCK_H_
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COSMOPOLITAN_C_START_
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#define MUTEX_DEPTH_MIN 0x00000010ull
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#define MUTEX_DEPTH_MAX 0x000003f0ull
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#define MUTEX_TYPE(word) ((word) & 3)
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#define MUTEX_PSHARED(word) ((word) & 4)
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#define MUTEX_LOCKED(word) ((word) & 8)
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#define MUTEX_DEPTH(word) ((word) & MUTEX_DEPTH_MAX)
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#define MUTEX_OWNER(word) ((word) >> 32)
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#define MUTEX_LOCK(word) (((word) & 7) | 8)
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#define MUTEX_UNLOCK(word) ((word) & 7)
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#define MUTEX_SET_TYPE(word, type) (((word) & ~3ull) | (type))
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#define MUTEX_SET_PSHARED(word, pshared) (((word) & ~4ull) | (pshared))
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#define MUTEX_INC_DEPTH(word) ((word) + MUTEX_DEPTH_MIN)
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#define MUTEX_DEC_DEPTH(word) ((word) - MUTEX_DEPTH_MIN)
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#define MUTEX_SET_OWNER(word, tid) ((uint64_t)(tid) << 32 | (uint32_t)(word))
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COSMOPOLITAN_C_END_
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#endif /* COSMOPOLITAN_LIBC_THREAD_LOCK_H_ */
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