00001 /* 00002 * IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING. By 00003 * downloading, copying, installing or using the software you agree to 00004 * this license. If you do not agree to this license, do not download, 00005 * install, copy or use the software. 00006 * 00007 * Intel Open Source License 00008 * 00009 * Copyright (c) 2006 Intel Corporation. All rights reserved. 00010 * 00011 * Redistribution and use in source and binary forms, with or without 00012 * modification, are permitted provided that the following conditions are 00013 * met: 00014 * 00015 * Redistributions of source code must retain the above copyright 00016 * notice, this list of conditions and the following disclaimer. 00017 * 00018 * Redistributions in binary form must reproduce the above copyright 00019 * notice, this list of conditions and the following disclaimer in the 00020 * documentation and/or other materials provided with the distribution. 00021 * 00022 * Neither the name of the Intel Corporation nor the names of its 00023 * contributors may be used to endorse or promote products derived from 00024 * this software without specific prior written permission. 00025 * 00026 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 00027 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 00028 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 00029 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE INTEL OR 00030 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 00031 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 00032 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 00033 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 00034 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 00035 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 00036 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 00037 */ 00038 00039 #ifndef _OASYS_ATOMIC_FAKE_H_ 00040 #define _OASYS_ATOMIC_FAKE_H_ 00041 00053 #include "../debug/DebugUtils.h" 00054 #include "../util/Singleton.h" 00055 00056 namespace oasys { 00057 00061 struct atomic_t { 00062 atomic_t(u_int32_t v = 0) : value(v) {} 00063 00064 volatile u_int32_t value; 00065 }; 00066 00074 static inline void 00075 atomic_add(volatile atomic_t *v, u_int32_t i) 00076 { 00077 v->value += i; 00078 } 00079 00086 static inline void 00087 atomic_sub(volatile atomic_t* v, u_int32_t i) 00088 { 00089 v->value -= i; 00090 } 00091 00097 static inline void 00098 atomic_incr(volatile atomic_t* v) 00099 { 00100 v->value++; 00101 } 00102 00109 static inline void 00110 atomic_decr(volatile atomic_t* v) 00111 { 00112 v->value--; 00113 } 00114 00124 static inline bool 00125 atomic_decr_test(volatile atomic_t* v) 00126 { 00127 v->value--; 00128 return (v->value == 0); 00129 } 00130 00141 static inline u_int32_t 00142 atomic_cmpxchg32(volatile atomic_t* v, u_int32_t o, u_int32_t n) 00143 { 00144 u_int32_t ret = v->value; 00145 00146 if (v->value == o) { 00147 v->value = n; 00148 } 00149 00150 return ret; 00151 } 00152 00158 static inline u_int32_t 00159 atomic_incr_ret(volatile atomic_t* v) 00160 { 00161 v->value++; 00162 return v->value; 00163 } 00164 00171 static inline u_int32_t 00172 atomic_add_ret(volatile atomic_t* v, u_int32_t i) 00173 { 00174 v->value += i; 00175 return v->value; 00176 } 00177 00178 } // namespace oasys 00179 00180 #endif /* _OASYS_ATOMIC_FAKE_H_ */