56 lines
1.3 KiB
C
56 lines
1.3 KiB
C
/* ipc.c - This file is a part of NutsOS
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*
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* NutsOS
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* Copyright (C) 2013 Free Software Foundation, Inc.
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*
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* NutsOS is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* NutsOS is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with NutsOS; If not, see <http://www.gnu.org/licenses/>.
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*
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* Valentin Verdier <valentin.verdier03@gmail.com>
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*/
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#include "ipc.h"
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#include "types.h"
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#include "asm_x86.h"
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#include "process.h"
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void IPC_MutexLock(unsigned int* mutex)
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{
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if(CurrentProcess)
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{
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if(_AtomicTestAndSet(mutex))
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{
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CurrentProcess->ipcWaitMutex = mutex;
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CurrentProcess->status = 1;
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Schedule();
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}
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else
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{
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CurrentProcess->ipcInSection++;
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}
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}
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}
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void IPC_MutexUnlock(unsigned int* mutex)
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{
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if(CurrentProcess)
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{
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if(CurrentProcess->ipcInSection > 0)
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{
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*mutex = 0;
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CurrentProcess->ipcInSection--;
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}
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}
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}
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