/*************************************************************************\
*                  Copyright (C) Michael Kerrisk, 2026.                   *
*                                                                         *
* This program is free software. You may use, modify, and redistribute it *
* under the terms of the GNU Lesser General Public License as published   *
* by the Free Software Foundation, either version 3 or (at your option)   *
* any later version. This program is distributed without any warranty.    *
* See the files COPYING.lgpl-v3 and COPYING.gpl-v3 for details.           *
\*************************************************************************/

#ifndef BINARY_SEMS_H           /* Prevent accidental double inclusion */
#define BINARY_SEMS_H

#include "tlpi_hdr.h"

/* Variables controlling operation of functions below */

extern Boolean bsUseSemUndo;            /* Use SEM_UNDO during semop()? */
extern Boolean bsRetryOnEintr;          /* Retry if semop() interrupted by
                                           signal handler? */

int initSemAvailable(int semId, int semNum);

int initSemInUse(int semId, int semNum);

int reserveSem(int semId, int semNum);

int releaseSem(int semId, int semNum);

#endif