Atomic-mutex.h

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00001 /*
00002  *    Copyright 2006 Intel Corporation
00003  * 
00004  *    Licensed under the Apache License, Version 2.0 (the "License");
00005  *    you may not use this file except in compliance with the License.
00006  *    You may obtain a copy of the License at
00007  * 
00008  *        http://www.apache.org/licenses/LICENSE-2.0
00009  * 
00010  *    Unless required by applicable law or agreed to in writing, software
00011  *    distributed under the License is distributed on an "AS IS" BASIS,
00012  *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
00013  *    See the License for the specific language governing permissions and
00014  *    limitations under the License.
00015  */
00016 
00017 
00018 #ifndef _OASYS_ATOMIC_MUTEX_H_
00019 #define _OASYS_ATOMIC_MUTEX_H_
00020 
00030 #include "../debug/DebugUtils.h"
00031 #include "../util/Singleton.h"
00032 
00033 namespace oasys {
00034 
00035 class Mutex;
00036 
00040 Mutex* atomic_mutex();
00041 
00046 struct atomic_t {
00047     atomic_t(u_int32_t v = 0) : value(v) {}
00048 
00049     volatile u_int32_t value;
00050 };
00051 
00059 void atomic_add(volatile atomic_t *v, u_int32_t i);
00060 
00067 void atomic_sub(volatile atomic_t* v, u_int32_t i);
00068 
00074 void atomic_incr(volatile atomic_t* v);
00075 
00082 void atomic_decr(volatile atomic_t* v);
00083 
00093 bool atomic_decr_test(volatile atomic_t* v);
00094 
00105 u_int32_t atomic_cmpxchg32(volatile atomic_t* v, u_int32_t o, u_int32_t n);
00106 
00112 u_int32_t atomic_incr_ret(volatile atomic_t* v);
00113 
00120 u_int32_t atomic_add_ret(volatile atomic_t* v, u_int32_t i);
00121 
00122 } // namespace oasys
00123 
00124 #endif /* _OASYS_ATOMIC_MUTEX_H_ */

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