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