Atomic-fake.h

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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_ */

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