Linux cli command sem_close

➡ A Linux man page (short for manual page) is a form of software documentation found on Linux and Unix-like operating systems. This man-page explains the command sem_close and provides detailed information about the command sem_close, system calls, library functions, and other aspects of the system, including usage, options, and examples of _. You can access this man page by typing man followed by the sem_close.

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NAME 🖥️ sem_close 🖥️

close a named semaphore

LIBRARY

POSIX threads library (libpthread, -lpthread)

SYNOPSIS

#include <semaphore.h>
int sem_close(sem_t *sem);

DESCRIPTION

sem_close() closes the named semaphore referred to by sem, allowing any resources that the system has allocated to the calling process for this semaphore to be freed.

RETURN VALUE

On success sem_close() returns 0; on error, -1 is returned, with errno set to indicate the error.

ERRORS

EINVAL
sem is not a valid semaphore.

ATTRIBUTES

For an explanation of the terms used in this section, see attributes(7).

InterfaceAttributeValue

sem_close()

Thread safetyMT-Safe

STANDARDS

POSIX.1-2008.

HISTORY

POSIX.1-2001.

NOTES

All open named semaphores are automatically closed on process termination, or upon execve(2).

SEE ALSO

sem_getvalue(3), sem_open(3), sem_post(3), sem_unlink(3), sem_wait(3), sem_overview(7)

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