Atomic-mutex.cc

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00038 
00039 #include "config.h"
00040 
00041 #ifdef OASYS_ATOMIC_MUTEX
00042 
00043 #include "Atomic-mutex.h"
00044 #include "Mutex.h"
00045 
00046 namespace oasys {
00047 
00052 Mutex g_atomic_mutex("/XXX/ATOMIC_MUTEX_UNUSED_LOGGER",
00053                      Mutex::TYPE_FAST,
00054                      true /* keep_quiet */);
00055 
00059 Mutex* atomic_mutex() { return &g_atomic_mutex; }
00060 
00061 //----------------------------------------------------------------------
00062 void
00063 atomic_add(volatile atomic_t *v, u_int32_t i)
00064 {
00065     ScopeLock l(atomic_mutex(), "atomic_add");
00066     v->value += i;
00067 }
00068 
00069 //----------------------------------------------------------------------
00070 void
00071 atomic_sub(volatile atomic_t* v, u_int32_t i)
00072 {
00073     ScopeLock l(atomic_mutex(), "atomic_sub");
00074     v->value -= i;
00075 }
00076 
00077 //----------------------------------------------------------------------
00078 void
00079 atomic_incr(volatile atomic_t* v)
00080 {
00081     ScopeLock l(atomic_mutex(), "atomic_incr");
00082     v->value++;
00083 }
00084 
00085 //----------------------------------------------------------------------
00086 void
00087 atomic_decr(volatile atomic_t* v)
00088 {
00089     ScopeLock l(atomic_mutex(), "atomic_decr");
00090     v->value--;
00091 }
00092 
00093 //----------------------------------------------------------------------
00094 bool
00095 atomic_decr_test(volatile atomic_t* v)
00096 {
00097     ScopeLock l(atomic_mutex(), "atomic_decr_test");
00098     v->value--;
00099     return (v->value == 0);
00100 }
00101 
00102 //----------------------------------------------------------------------
00103 u_int32_t
00104 atomic_cmpxchg32(volatile atomic_t* v, u_int32_t o, u_int32_t n)
00105 {
00106     ScopeLock l(atomic_mutex(), "atomic_cmpxchg32");
00107     u_int32_t ret = v->value;
00108 
00109     if (v->value == o) {
00110         v->value = n;
00111     }
00112 
00113     return ret;
00114 }
00115 
00116 //----------------------------------------------------------------------
00117 u_int32_t
00118 atomic_incr_ret(volatile atomic_t* v)
00119 {
00120     ScopeLock l(atomic_mutex(), "atomic_incr_ret");
00121     v->value++;
00122     return v->value;
00123 }
00124 
00125 //----------------------------------------------------------------------
00126 u_int32_t
00127 atomic_add_ret(volatile atomic_t* v, u_int32_t i)
00128 {
00129     ScopeLock l(atomic_mutex(), "atomic_add_ret");
00130     v->value += i;
00131     return v->value;
00132 }
00133 
00134 } // namespace oasys
00135 
00136 #endif /* OASYS_ATOMIC_MUTEX */

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