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36.2.2 POSIX Semaphores ¶

Function: int sem_init (sem_t *sem, int pshared, unsigned int value) ¶

Preliminary: | MT-Safe | AS-Safe | AC-Unsafe corrupt | See POSIX Safety Concepts.

This documentation is a stub. For additional information on this function, consult the manual page https://man7.org/linux/man-pages/man3/sem_init.3.html. See Linux (The Linux Kernel).

Function: int sem_destroy (sem_t *sem) ¶

Preliminary: | MT-Safe | AS-Safe | AC-Safe | See POSIX Safety Concepts.

This documentation is a stub. For additional information on this function, consult the manual page https://man7.org/linux/man-pages/man3/sem_destroy.3.html. See Linux (The Linux Kernel).

Function: sem_t * sem_open (const char *name, int oflag, ...) ¶

Preliminary: | MT-Safe | AS-Unsafe init | AC-Unsafe init | See POSIX Safety Concepts.

This documentation is a stub. For additional information on this function, consult the manual page https://man7.org/linux/man-pages/man3/sem_open.3.html. See Linux (The Linux Kernel).

Function: int sem_close (sem_t *sem) ¶

Preliminary: | MT-Safe | AS-Unsafe lock | AC-Unsafe lock | See POSIX Safety Concepts.

This documentation is a stub. For additional information on this function, consult the manual page https://man7.org/linux/man-pages/man3/sem_close.3.html. See Linux (The Linux Kernel).

Function: int sem_unlink (const char *name) ¶

Preliminary: | MT-Safe | AS-Unsafe init | AC-Unsafe corrupt | See POSIX Safety Concepts.

This documentation is a stub. For additional information on this function, consult the manual page https://man7.org/linux/man-pages/man3/sem_unlink.3.html. See Linux (The Linux Kernel).

Function: int sem_wait (sem_t *sem) ¶

Preliminary: | MT-Safe | AS-Safe | AC-Unsafe corrupt | See POSIX Safety Concepts.

This documentation is a stub. For additional information on this function, consult the manual page https://man7.org/linux/man-pages/man3/sem_wait.3.html. See Linux (The Linux Kernel).

Function: int sem_timedwait (sem_t *sem, const struct timespec *abstime) ¶

Preliminary: | MT-Safe | AS-Safe | AC-Unsafe corrupt | See POSIX Safety Concepts.

This documentation is a stub. For additional information on this function, consult the manual page https://man7.org/linux/man-pages/man3/sem_timedwait.3.html. See Linux (The Linux Kernel).

Function: int sem_clockwait (sem_t *sem, clockid_t clockid, const struct timespec *abstime) ¶

Preliminary: | MT-Safe | AS-Unsafe lock | AC-Unsafe lock | See POSIX Safety Concepts.

Behaves like sem_timedwait except the time abstime is measured against the clock specified by clockid rather than CLOCK_REALTIME. Currently, clockid must be either CLOCK_MONOTONIC or CLOCK_REALTIME.

Function: int sem_trywait (sem_t *sem) ¶

Preliminary: | MT-Safe | AS-Safe | AC-Safe | See POSIX Safety Concepts.

This documentation is a stub. For additional information on this function, consult the manual page https://man7.org/linux/man-pages/man3/sem_trywait.3.html. See Linux (The Linux Kernel).

Function: int sem_post (sem_t *sem) ¶

Preliminary: | MT-Safe | AS-Safe | AC-Safe | See POSIX Safety Concepts.

This documentation is a stub. For additional information on this function, consult the manual page https://man7.org/linux/man-pages/man3/sem_post.3.html. See Linux (The Linux Kernel).

Function: int sem_getvalue (sem_t *sem, int *sval) ¶

Preliminary: | MT-Safe | AS-Safe | AC-Safe | See POSIX Safety Concepts.

This documentation is a stub. For additional information on this function, consult the manual page https://man7.org/linux/man-pages/man3/sem_getvalue.3.html. See Linux (The Linux Kernel).