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Diffstat (limited to 'gcell/ibm/sync/ppu_source/mutex_trylock.h')
| -rw-r--r-- | gcell/ibm/sync/ppu_source/mutex_trylock.h | 81 |
1 files changed, 0 insertions, 81 deletions
diff --git a/gcell/ibm/sync/ppu_source/mutex_trylock.h b/gcell/ibm/sync/ppu_source/mutex_trylock.h deleted file mode 100644 index 445196c74..000000000 --- a/gcell/ibm/sync/ppu_source/mutex_trylock.h +++ /dev/null @@ -1,81 +0,0 @@ -/* -------------------------------------------------------------- */ -/* (C)Copyright 2001,2007, */ -/* International Business Machines Corporation, */ -/* Sony Computer Entertainment, Incorporated, */ -/* Toshiba Corporation, */ -/* */ -/* All Rights Reserved. */ -/* */ -/* Redistribution and use in source and binary forms, with or */ -/* without modification, are permitted provided that the */ -/* following conditions are met: */ -/* */ -/* - Redistributions of source code must retain the above copyright*/ -/* notice, this list of conditions and the following disclaimer. */ -/* */ -/* - Redistributions in binary form must reproduce the above */ -/* copyright notice, this list of conditions and the following */ -/* disclaimer in the documentation and/or other materials */ -/* provided with the distribution. */ -/* */ -/* - Neither the name of IBM Corporation nor the names of its */ -/* contributors may be used to endorse or promote products */ -/* derived from this software without specific prior written */ -/* permission. */ -/* */ -/* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND */ -/* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, */ -/* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF */ -/* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE */ -/* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR */ -/* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, */ -/* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT */ -/* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; */ -/* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) */ -/* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN */ -/* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR */ -/* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, */ -/* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ -/* -------------------------------------------------------------- */ -/* PROLOG END TAG zYx */ -#ifndef _PPU_MUTEX_TRYLOCK_H_ -#define _PPU_MUTEX_TRYLOCK_H_ - -#include <ppu_intrinsics.h> -#include "sync_utils.h" -#include "mutex.h" -#include "trace_libsync.h" - -/** - * mutex_trylock - acquire a lock, or return immediately. - * @lock: handle to effective address of lock variable. - * - * Description: Acquire a lock, or return immediately - * without polling for availability. - * - * Context: The application should not call this interface - * from a tight loop!! Use spin_lock() instead. - * - * Attempt to immediately aquire a lock at a location in system memory, - * and return 1 if the lock was aquired or 0 otherwise. - */ -static __inline int _mutex_trylock (mutex_ea_t lock) -{ - int val; - int ret = 0; - void *p; - - SYNC_ULL_TO_PTR(lock, p); - - do { - val = (int)__lwarx(p); - if (val) break; - } while ((ret = __stwcx(p, (unsigned int)1)) == 0); - __isync(); - - TRACE_MUTEX_TRYLOCK(lock,ret); - - return (ret); -} - -#endif /* _PPU_MUTEX_TRYLOCK_H_ */ |