minetest/src/jthread/win32/jsemaphore.cpp

65 lines
1.3 KiB
C++

/*
Minetest
Copyright (C) 2013 sapier, < sapier AT gmx DOT net >
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "jthread/jsemaphore.h"
JSemaphore::JSemaphore() {
m_hSemaphore = CreateSemaphore(
0,
0,
MAX_SEMAPHORE_COUNT,
0);
}
JSemaphore::~JSemaphore() {
CloseHandle(&m_hSemaphore);
}
JSemaphore::JSemaphore(int initval) {
m_hSemaphore = CreateSemaphore(
0,
initval,
MAX_SEMAPHORE_COUNT,
0);
}
void JSemaphore::Post() {
ReleaseSemaphore(
m_hSemaphore,
1,
0);
}
void JSemaphore::Wait() {
WaitForSingleObject(
m_hSemaphore,
INFINITE);
}
int JSemaphore::GetValue() {
long int retval = 0;
ReleaseSemaphore(
m_hSemaphore,
0,
&retval);
return retval;
}