94 lines
3.3 KiB
C++
94 lines
3.3 KiB
C++
/*************************************************************************/
|
|
/* rw_lock_posix.cpp */
|
|
/*************************************************************************/
|
|
/* This file is part of: */
|
|
/* GODOT ENGINE */
|
|
/* https://godotengine.org */
|
|
/*************************************************************************/
|
|
/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */
|
|
/* Copyright (c) 2014-2021 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 "core/error/error_macros.h"
|
|
#include "core/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, nullptr);
|
|
}
|
|
|
|
RWLockPosix::~RWLockPosix() {
|
|
pthread_rwlock_destroy(&rwlock);
|
|
}
|
|
|
|
#endif
|