69 lines
1.3 KiB
C
69 lines
1.3 KiB
C
/*
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* SPDX-License-Identifier: MIT
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*
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* Copyright (C) 2019 Philippe Gerum <rpm@xenomai.org>
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*/
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#ifndef _EVL_ESHI_SEM_H
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#define _EVL_ESHI_SEM_H
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#include <time.h>
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#include <evl/clock.h>
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struct evl_sem {
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unsigned int magic;
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union {
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struct {
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clockid_t clock;
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int fd;
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} active;
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struct {
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const char *name;
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int clockfd;
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int initval;
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int flags;
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} uninit;
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};
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};
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#define __SEM_UNINIT_MAGIC 0xed15ed15
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#define EVL_SEM_INITIALIZER(__name, __clockfd, __initval, __flags) { \
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.magic = __SEM_UNINIT_MAGIC, \
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.uninit = { \
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.name = (__name), \
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.clockfd = (__clockfd), \
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.initval = (__initval), \
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.flags = (__flags), \
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} \
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}
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#define evl_new_sem(__sem, __fmt, __args...) \
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evl_create_sem(__sem, EVL_CLOCK_MONOTONIC, \
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0, 0, __fmt, ##__args)
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#ifdef __cplusplus
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extern "C" {
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#endif
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int evl_create_sem(struct evl_sem *sem,
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int clockfd, int initval, int flags,
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const char *fmt, ...);
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int evl_close_sem(struct evl_sem *sem);
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int evl_get_sem(struct evl_sem *sem);
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int evl_timedget_sem(struct evl_sem *sem,
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const struct timespec *timeout);
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int evl_put_sem(struct evl_sem *sem);
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int evl_tryget_sem(struct evl_sem *sem);
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#ifdef __cplusplus
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}
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#endif
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#endif /* _EVL_ESHI_SEM_H */
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