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/*************************************************************************/
/* rw_lock_posix.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2018 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2018 Godot Engine contributors (cf. AUTHORS.md) */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#if defined(UNIX_ENABLED) || defined(PTHREAD_ENABLED)
#include "rw_lock_posix.h"
#include "error_macros.h"
#include "os/memory.h"
#include <stdio.h>
void RWLockPosix::read_lock() {
int err = pthread_rwlock_rdlock(&rwlock);
if (err != 0) {
perror("Acquiring lock failed");
}
ERR_FAIL_COND(err != 0);
}
void RWLockPosix::read_unlock() {
pthread_rwlock_unlock(&rwlock);
}
Error RWLockPosix::read_try_lock() {
if (pthread_rwlock_tryrdlock(&rwlock) != 0) {
return ERR_BUSY;
} else {
return OK;
}
}
void RWLockPosix::write_lock() {
int err = pthread_rwlock_wrlock(&rwlock);
ERR_FAIL_COND(err != 0);
}
void RWLockPosix::write_unlock() {
pthread_rwlock_unlock(&rwlock);
}
Error RWLockPosix::write_try_lock() {
if (pthread_rwlock_trywrlock(&rwlock) != 0) {
return ERR_BUSY;
} else {
return OK;
}
}
RWLock *RWLockPosix::create_func_posix() {
return memnew(RWLockPosix);
}
void RWLockPosix::make_default() {
create_func = create_func_posix;
}
RWLockPosix::RWLockPosix() {
//rwlock=PTHREAD_RWLOCK_INITIALIZER; fails on OSX
pthread_rwlock_init(&rwlock, NULL);
}
RWLockPosix::~RWLockPosix() {
pthread_rwlock_destroy(&rwlock);
}
#endif
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