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author | Max Horn | 2006-07-06 21:44:48 +0000 |
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committer | Max Horn | 2006-07-06 21:44:48 +0000 |
commit | 1d8d9f5510dc5f574e926bd6fadb9d20337daede (patch) | |
tree | 5cdcf6c8a233159776be9d90f3f39885222f65eb /backends/platform/ps2/ps2mutex.cpp | |
parent | 9269ebe9f5a281f452594f1e8108e31c88a398fb (diff) | |
download | scummvm-rg350-1d8d9f5510dc5f574e926bd6fadb9d20337daede.tar.gz scummvm-rg350-1d8d9f5510dc5f574e926bd6fadb9d20337daede.tar.bz2 scummvm-rg350-1d8d9f5510dc5f574e926bd6fadb9d20337daede.zip |
Moving remaining platform/backends code, as previously threatened
svn-id: r23380
Diffstat (limited to 'backends/platform/ps2/ps2mutex.cpp')
-rw-r--r-- | backends/platform/ps2/ps2mutex.cpp | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/backends/platform/ps2/ps2mutex.cpp b/backends/platform/ps2/ps2mutex.cpp new file mode 100644 index 0000000000..6ae9a3a005 --- /dev/null +++ b/backends/platform/ps2/ps2mutex.cpp @@ -0,0 +1,85 @@ +/* ScummVM - Scumm Interpreter + * Copyright (C) 2005-2006 The ScummVM project + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * 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 General Public License for more details. + + * You should have received a copy of the GNU 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. + * + * $URL$ + * $Id$ + * + */ + +#include "backends/ps2/systemps2.h" + +OSystem::MutexRef OSystem_PS2::createMutex(void) { + WaitSema(_mutexSema); + Ps2Mutex *mutex = NULL; + for (int i = 0; i < MAX_MUTEXES; i++) + if (_mutex[i].sema < 0) { + mutex = _mutex + i; + break; + } + if (mutex) { + ee_sema_t newSema; + newSema.init_count = 1; + newSema.max_count = 1; + mutex->sema = CreateSema(&newSema); + mutex->owner = mutex->count = 0; + } else + printf("OSystem_PS2::createMutex: ran out of Mutex slots!\n"); + SignalSema(_mutexSema); + return (OSystem::MutexRef)mutex; +} + +void OSystem_PS2::lockMutex(MutexRef mutex) { + WaitSema(_mutexSema); + Ps2Mutex *sysMutex = (Ps2Mutex*)mutex; + int tid = GetThreadId(); + assert(tid != 0); + if (sysMutex->owner && (sysMutex->owner == tid)) + sysMutex->count++; + else { + SignalSema(_mutexSema); + WaitSema(sysMutex->sema); + WaitSema(_mutexSema); + sysMutex->owner = tid; + sysMutex->count = 0; + } + SignalSema(_mutexSema); +} + +void OSystem_PS2::unlockMutex(MutexRef mutex) { + WaitSema(_mutexSema); + Ps2Mutex *sysMutex = (Ps2Mutex*)mutex; + int tid = GetThreadId(); + if (sysMutex->owner && sysMutex->count && (sysMutex->owner == tid)) + sysMutex->count--; + else { + assert(sysMutex->count == 0); + SignalSema(sysMutex->sema); + sysMutex->owner = 0; + } + SignalSema(_mutexSema); +} + +void OSystem_PS2::deleteMutex(MutexRef mutex) { + WaitSema(_mutexSema); + Ps2Mutex *sysMutex = (Ps2Mutex*)mutex; + if (sysMutex->owner || sysMutex->count) + printf("WARNING: Deleting LOCKED mutex!\n"); + DeleteSema(sysMutex->sema); + sysMutex->sema = -1; + SignalSema(_mutexSema); +} + |