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99 lines
3.3 KiB
C++
99 lines
3.3 KiB
C++
/*************************************************************************/
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/* semaphore_windows.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) 2007-2020 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2020 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_windows.h"
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#if defined(WINDOWS_ENABLED)
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#include "core/os/memory.h"
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Error SemaphoreWindows::wait() {
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WaitForSingleObjectEx(semaphore, INFINITE, false);
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return OK;
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}
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Error SemaphoreWindows::post() {
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ReleaseSemaphore(semaphore, 1, NULL);
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return OK;
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}
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int SemaphoreWindows::get() const {
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long previous;
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switch (WaitForSingleObjectEx(semaphore, 0, false)) {
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case WAIT_OBJECT_0: {
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ERR_FAIL_COND_V(!ReleaseSemaphore(semaphore, 1, &previous), -1);
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return previous + 1;
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} break;
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case WAIT_TIMEOUT: {
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return 0;
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} break;
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default: {
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}
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}
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ERR_FAIL_V(-1);
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}
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SemaphoreOld *SemaphoreWindows::create_semaphore_windows() {
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return memnew(SemaphoreWindows);
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}
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void SemaphoreWindows::make_default() {
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create_func = create_semaphore_windows;
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}
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SemaphoreWindows::SemaphoreWindows() {
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#ifdef UWP_ENABLED
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semaphore = CreateSemaphoreEx(
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NULL,
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0,
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0xFFFFFFF, //wathever
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NULL,
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0,
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SEMAPHORE_ALL_ACCESS);
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#else
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semaphore = CreateSemaphore(
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NULL,
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0,
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0xFFFFFFF, //wathever
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NULL);
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#endif
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}
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SemaphoreWindows::~SemaphoreWindows() {
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CloseHandle(semaphore);
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}
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#endif
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