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Ruby
2.0.0p481(2014-05-08revision45883)
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00001 #ifndef RUBY_ATOMIC_H 00002 #define RUBY_ATOMIC_H 00003 00004 #if 0 00005 #elif defined HAVE_GCC_ATOMIC_BUILTINS 00006 typedef unsigned int rb_atomic_t; 00007 # define ATOMIC_SET(var, val) (void)__atomic_exchange_n(&(var), (val), __ATOMIC_SEQ_CST) 00008 # define ATOMIC_INC(var) __atomic_fetch_add(&(var), 1, __ATOMIC_SEQ_CST) 00009 # define ATOMIC_DEC(var) __atomic_fetch_sub(&(var), 1, __ATOMIC_SEQ_CST) 00010 # define ATOMIC_OR(var, val) __atomic_or_fetch(&(var), (val), __ATOMIC_SEQ_CST) 00011 # define ATOMIC_EXCHANGE(var, val) __atomic_exchange_n(&(var), (val), __ATOMIC_SEQ_CST) 00012 # define ATOMIC_CAS(var, oldval, newval) \ 00013 ({ __typeof__(oldval) oldvaldup = (oldval); /* oldval should not be modified */ \ 00014 __atomic_compare_exchange_n(&(var), &oldvaldup, (newval), 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST); \ 00015 oldvaldup; }) 00016 00017 # define ATOMIC_SIZE_ADD(var, val) __atomic_fetch_add(&(var), (val), __ATOMIC_SEQ_CST) 00018 # define ATOMIC_SIZE_SUB(var, val) __atomic_fetch_sub(&(var), (val), __ATOMIC_SEQ_CST) 00019 00020 # define ATOMIC_PTR_EXCHANGE(var, val) __atomic_exchange_n(&(var), (val), __ATOMIC_SEQ_CST) 00021 00022 #elif defined HAVE_GCC_SYNC_BUILTINS 00023 /* @shyouhei hack to support atomic operations in case of gcc. Gcc 00024 * has its own pseudo-insns to support them. See info, or 00025 * http://gcc.gnu.org/onlinedocs/gcc/Atomic-Builtins.html */ 00026 00027 typedef unsigned int rb_atomic_t; /* Anything OK */ 00028 # define ATOMIC_SET(var, val) (void)__sync_lock_test_and_set(&(var), (val)) 00029 # define ATOMIC_INC(var) __sync_fetch_and_add(&(var), 1) 00030 # define ATOMIC_DEC(var) __sync_fetch_and_sub(&(var), 1) 00031 # define ATOMIC_OR(var, val) __sync_or_and_fetch(&(var), (val)) 00032 # define ATOMIC_EXCHANGE(var, val) __sync_lock_test_and_set(&(var), (val)) 00033 # define ATOMIC_CAS(var, oldval, newval) __sync_val_compare_and_swap(&(var), (oldval), (newval)) 00034 00035 # define ATOMIC_SIZE_ADD(var, val) __sync_fetch_and_add(&(var), (val)) 00036 # define ATOMIC_SIZE_SUB(var, val) __sync_fetch_and_sub(&(var), (val)) 00037 00038 # define ATOMIC_PTR_EXCHANGE(var, val) __sync_lock_test_and_set(&(var), (val)) 00039 00040 #elif defined _WIN32 00041 #if defined _MSC_VER && _MSC_VER > 1200 00042 #pragma intrinsic(_InterlockedOr) 00043 #endif 00044 typedef LONG rb_atomic_t; 00045 00046 # define ATOMIC_SET(var, val) InterlockedExchange(&(var), (val)) 00047 # define ATOMIC_INC(var) InterlockedIncrement(&(var)) 00048 # define ATOMIC_DEC(var) InterlockedDecrement(&(var)) 00049 #if defined __GNUC__ 00050 # define ATOMIC_OR(var, val) __asm__("lock\n\t" "orl\t%1, %0" : "=m"(var) : "Ir"(val)) 00051 #elif defined _MSC_VER && _MSC_VER <= 1200 00052 # define ATOMIC_OR(var, val) rb_w32_atomic_or(&(var), (val)) 00053 static inline void 00054 rb_w32_atomic_or(volatile rb_atomic_t *var, rb_atomic_t val) 00055 { 00056 #ifdef _M_IX86 00057 __asm mov eax, var; 00058 __asm mov ecx, val; 00059 __asm lock or [eax], ecx; 00060 #else 00061 #error unsupported architecture 00062 #endif 00063 } 00064 #else 00065 # define ATOMIC_OR(var, val) _InterlockedOr(&(var), (val)) 00066 #endif 00067 # define ATOMIC_EXCHANGE(var, val) InterlockedExchange(&(var), (val)) 00068 # define ATOMIC_CAS(var, oldval, newval) InterlockedCompareExchange(&(var), (newval), (oldval)) 00069 # if defined _MSC_VER && _MSC_VER <= 1200 00070 static inline rb_atomic_t 00071 rb_w32_atomic_cas(volatile rb_atomic_t *var, rb_atomic_t oldval, rb_atomic_t newval) 00072 { 00073 return (rb_atomic_t)InterlockedCompareExchange((PVOID *)var, (PVOID)newval, (PVOID)oldval); 00074 } 00075 # undef ATOMIC_CAS 00076 # define ATOMIC_CAS(var, oldval, newval) rb_w32_atomic_cas(&(var), (oldval), (newval)) 00077 # endif 00078 # ifdef _M_AMD64 00079 # define ATOMIC_SIZE_ADD(var, val) InterlockedExchangeAdd64((LONG_LONG *)&(var), (val)) 00080 # define ATOMIC_SIZE_SUB(var, val) InterlockedExchangeAdd64((LONG_LONG *)&(var), -(LONG)(val)) 00081 # define ATOMIC_SIZE_INC(var) InterlockedIncrement64(&(var)) 00082 # define ATOMIC_SIZE_DEC(var) InterlockedDecrement64(&(var)) 00083 # define ATOMIC_SIZE_EXCHANGE(var, val) InterlockedExchange64(&(var), (val)) 00084 # define ATOMIC_SIZE_CAS(var, oldval, val) InterlockedCompareExchange64(&(var), (oldval), (val)) 00085 # else 00086 # define ATOMIC_SIZE_ADD(var, val) InterlockedExchangeAdd((LONG *)&(var), (val)) 00087 # define ATOMIC_SIZE_SUB(var, val) InterlockedExchangeAdd((LONG *)&(var), -(LONG)(val)) 00088 # define ATOMIC_SIZE_INC(var) InterlockedIncrement((LONG *)&(var)) 00089 # define ATOMIC_SIZE_DEC(var) InterlockedDecrement((LONG *)&(var)) 00090 # define ATOMIC_SIZE_EXCHANGE(var, val) InterlockedExchange((LONG *)&(var), (val)) 00091 # endif 00092 00093 #elif defined(__sun) && defined(HAVE_ATOMIC_H) 00094 #include <atomic.h> 00095 typedef unsigned int rb_atomic_t; 00096 00097 # define ATOMIC_SET(var, val) (void)atomic_swap_uint(&(var), (val)) 00098 # define ATOMIC_INC(var) atomic_inc_uint(&(var)) 00099 # define ATOMIC_DEC(var) atomic_dec_uint(&(var)) 00100 # define ATOMIC_OR(var, val) atomic_or_uint(&(var), (val)) 00101 # define ATOMIC_EXCHANGE(var, val) atomic_swap_uint(&(var), (val)) 00102 # define ATOMIC_CAS(var, oldval, newval) atomic_cas_uint(&(var), (oldval), (newval)) 00103 00104 # if SIZEOF_SIZE_T == SIZEOF_LONG 00105 # define ATOMIC_SIZE_ADD(var, val) atomic_add_long(&(var), (val)) 00106 # define ATOMIC_SIZE_SUB(var, val) atomic_add_long(&(var), -(val)) 00107 # define ATOMIC_SIZE_INC(var) atomic_inc_ulong(&(var)) 00108 # define ATOMIC_SIZE_DEC(var) atomic_dec_ulong(&(var)) 00109 # define ATOMIC_SIZE_EXCHANGE(var, val) atomic_swap_ulong(&(var), (val)) 00110 # define ATOMIC_SIZE_CAS(var, oldval, val) atomic_cas_ulong(&(var), (oldval), (val)) 00111 # else 00112 # define ATOMIC_SIZE_ADD(var, val) atomic_add_int(&(var), (val)) 00113 # define ATOMIC_SIZE_SUB(var, val) atomic_add_int(&(var), -(val)) 00114 # define ATOMIC_SIZE_INC(var) atomic_inc_uint(&(var)) 00115 # define ATOMIC_SIZE_DEC(var) atomic_dec_uint(&(var)) 00116 # define ATOMIC_SIZE_EXCHANGE(var, val) atomic_swap_uint(&(var), (val)) 00117 # endif 00118 00119 #else 00120 typedef int rb_atomic_t; 00121 #define NEED_RUBY_ATOMIC_OPS 00122 extern rb_atomic_t ruby_atomic_exchange(rb_atomic_t *ptr, rb_atomic_t val); 00123 extern rb_atomic_t ruby_atomic_compare_and_swap(rb_atomic_t *ptr, 00124 rb_atomic_t cmp, 00125 rb_atomic_t newval); 00126 00127 # define ATOMIC_SET(var, val) (void)((var) = (val)) 00128 # define ATOMIC_INC(var) ((var)++) 00129 # define ATOMIC_DEC(var) ((var)--) 00130 # define ATOMIC_OR(var, val) ((var) |= (val)) 00131 # define ATOMIC_EXCHANGE(var, val) ruby_atomic_exchange(&(var), (val)) 00132 # define ATOMIC_CAS(var, oldval, newval) ruby_atomic_compare_and_swap(&(var), (oldval), (newval)) 00133 00134 # define ATOMIC_SIZE_ADD(var, val) (void)((var) += (val)) 00135 # define ATOMIC_SIZE_SUB(var, val) (void)((var) -= (val)) 00136 # define ATOMIC_SIZE_EXCHANGE(var, val) atomic_size_exchange(&(var), (val)) 00137 static inline size_t 00138 atomic_size_exchange(size_t *ptr, size_t val) 00139 { 00140 size_t old = *ptr; 00141 *ptr = val; 00142 return old; 00143 } 00144 #endif 00145 00146 #ifndef ATOMIC_SIZE_INC 00147 # define ATOMIC_SIZE_INC(var) ATOMIC_INC(var) 00148 #endif 00149 #ifndef ATOMIC_SIZE_DEC 00150 # define ATOMIC_SIZE_DEC(var) ATOMIC_DEC(var) 00151 #endif 00152 #ifndef ATOMIC_SIZE_EXCHANGE 00153 # define ATOMIC_SIZE_EXCHANGE(var, val) ATOMIC_EXCHANGE(var, val) 00154 #endif 00155 #ifndef ATOMIC_SIZE_CAS 00156 # define ATOMIC_SIZE_CAS(var, oldval, val) ATOMIC_CAS(var, oldval, val) 00157 #endif 00158 00159 #ifndef ATOMIC_PTR_EXCHANGE 00160 # if SIZEOF_VOIDP == SIZEOF_SIZE_T 00161 # define ATOMIC_PTR_EXCHANGE(var, val) (void *)ATOMIC_SIZE_EXCHANGE(*(size_t *)&(var), (size_t)(val)) 00162 # endif 00163 #endif 00164 #ifndef ATOMIC_PTR_CAS 00165 # if SIZEOF_VOIDP == SIZEOF_SIZE_T 00166 # define ATOMIC_PTR_CAS(var, oldval, val) (void *)ATOMIC_SIZE_CAS(*(size_t *)&(var), (size_t)(oldval), (size_t)(val)) 00167 # endif 00168 #endif 00169 00170 #endif /* RUBY_ATOMIC_H */ 00171
1.7.6.1