2022-09-11 18:02:07 +00:00
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#ifndef NSYNC_SEM_H_
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#define NSYNC_SEM_H_
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#include "third_party/nsync/time.h"
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#if !(__ASSEMBLER__ + __LINKER__ + 0)
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COSMOPOLITAN_C_START_
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typedef struct nsync_semaphore_s_ {
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2022-10-06 22:08:29 +00:00
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void *sem_space[32]; /* internal storage */
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2022-09-11 18:02:07 +00:00
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} nsync_semaphore;
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/* Initialize *s; the initial value is 0. */
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void nsync_mu_semaphore_init(nsync_semaphore *s);
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/* Wait until the count of *s exceeds 0, and decrement it. */
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void nsync_mu_semaphore_p(nsync_semaphore *s);
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/* Wait until one of: the count of *s is non-zero, in which case
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decrement *s and return 0; or abs_deadline expires, in which case
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return ETIMEDOUT. */
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int nsync_mu_semaphore_p_with_deadline(nsync_semaphore *s,
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nsync_time abs_deadline);
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/* Ensure that the count of *s is at least 1. */
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void nsync_mu_semaphore_v(nsync_semaphore *s);
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COSMOPOLITAN_C_END_
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#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
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#endif /* NSYNC_SEM_H_ */
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