path: root/src/common/mutex.h

/**
 * This file is part of Hercules.
 * http://herc.ws - http://github.com/HerculesWS/Hercules
 *
 * Copyright (C) 2012-2015  Hercules Dev Team
 * Copyright (C)  rAthena Project (www.rathena.org)
 *
 * Hercules is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
#ifndef COMMON_MUTEX_H
#define COMMON_MUTEX_H

#include "common/cbasetypes.h"

typedef struct ramutex ramutex; // Mutex
typedef struct racond racond; // Condition Var

#ifdef HERCULES_CORE
/**
 * Creates a Mutex
 *
 * @return not NULL
 */
ramutex *ramutex_create();

/**
 * Destroys a Mutex
 *
 * @param m - the mutex to destroy
 */
void ramutex_destroy(ramutex *m);

/**
 * Gets a lock
 *
 * @param m - the mutex to lock
 */
void ramutex_lock(ramutex *m);

/**
 * Trys to get the Lock
 *
 * @param m - the mutex try to lock
 *
 * @return boolean (true = got the lock)
 */
bool ramutex_trylock(ramutex *m);

/**
 * Unlocks a mutex
 *
 * @param m - the mutex to unlock
 */
void ramutex_unlock(ramutex *m);


/**
 * Creates a Condition variable
 *
 * @return not NULL
 */
racond *racond_create();

/**
 * Destroy a Condition variable
 *
 * @param c - the condition variable to destroy
 */
void racond_destroy(racond *c);

/**
 * Waits Until state is signaled
 *
 * @param c - the condition var to wait for signaled state
 * @param m - the mutex used for synchronization
 * @param timeout_ticks - timeout in ticks ( -1 = INFINITE )
 */
void racond_wait(racond *c, ramutex *m, sysint timeout_ticks);

/**
 * Sets the given condition var to signaled state
 *
 * @param c - condition var to set in signaled state.
 *
 * @note:
 *  Only one waiter gets notified.
 */
void racond_signal(racond *c);

/**
 * Sets notifies all waiting threads thats signaled.
 * @param c - condition var to set in signaled state
 *
 * @note:
 *  All Waiters getting notified.
 */
void racond_broadcast(racond *c);
#endif // HERCULES_CORE

#endif /* COMMON_MUTEX_H */