108 lines
3.3 KiB
C++
108 lines
3.3 KiB
C++
/*************************************************************************/
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/* semaphore_osx.cpp */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2021 Godot Engine contributors (cf. AUTHORS.md). */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#include "semaphore_osx.h"
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#include <fcntl.h>
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#include <unistd.h>
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void cgsem_init(cgsem_t *cgsem) {
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int flags, fd, i;
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pipe(cgsem->pipefd);
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/* Make the pipes FD_CLOEXEC to allow them to close should we call
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* execv on restart. */
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for (i = 0; i < 2; i++) {
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fd = cgsem->pipefd[i];
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flags = fcntl(fd, F_GETFD, 0);
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flags |= FD_CLOEXEC;
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fcntl(fd, F_SETFD, flags);
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}
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}
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void cgsem_post(cgsem_t *cgsem) {
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const char buf = 1;
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write(cgsem->pipefd[1], &buf, 1);
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}
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void cgsem_wait(cgsem_t *cgsem) {
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char buf;
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read(cgsem->pipefd[0], &buf, 1);
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}
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void cgsem_destroy(cgsem_t *cgsem) {
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close(cgsem->pipefd[1]);
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close(cgsem->pipefd[0]);
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}
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#include "core/os/memory.h"
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#include <errno.h>
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Error SemaphoreOSX::wait() {
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cgsem_wait(&sem);
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return OK;
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}
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Error SemaphoreOSX::post() {
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cgsem_post(&sem);
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return OK;
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}
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int SemaphoreOSX::get() const {
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return 0;
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}
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Semaphore *SemaphoreOSX::create_semaphore_osx() {
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return memnew(SemaphoreOSX);
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}
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void SemaphoreOSX::make_default() {
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create_func = create_semaphore_osx;
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}
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SemaphoreOSX::SemaphoreOSX() {
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cgsem_init(&sem);
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}
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SemaphoreOSX::~SemaphoreOSX() {
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cgsem_destroy(&sem);
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}
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