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Ruby
1.9.3p448(2013-06-27revision41675)
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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 /* @shyouhei hack to support atomic operations in case of gcc. Gcc 00007 * has its own pseudo-insns to support them. See info, or 00008 * http://gcc.gnu.org/onlinedocs/gcc/Atomic-Builtins.html */ 00009 00010 typedef unsigned int rb_atomic_t; /* Anything OK */ 00011 # define ATOMIC_SET(var, val) (void)__sync_lock_test_and_set(&(var), (val)) 00012 # define ATOMIC_INC(var) __sync_fetch_and_add(&(var), 1) 00013 # define ATOMIC_DEC(var) __sync_fetch_and_sub(&(var), 1) 00014 # define ATOMIC_OR(var, val) __sync_or_and_fetch(&(var), (val)) 00015 # define ATOMIC_EXCHANGE(var, val) __sync_lock_test_and_set(&(var), (val)) 00016 00017 # define ATOMIC_SIZE_ADD(var, val) __sync_fetch_and_add(&(var), (val)) 00018 # define ATOMIC_SIZE_SUB(var, val) __sync_fetch_and_sub(&(var), (val)) 00019 # define ATOMIC_SIZE_INC(var) __sync_fetch_and_add(&(var), 1) 00020 # define ATOMIC_SIZE_DEC(var) __sync_fetch_and_sub(&(var), 1) 00021 # define ATOMIC_SIZE_EXCHANGE(var, val) __sync_lock_test_and_set(&(var), (val)) 00022 00023 #elif defined _WIN32 00024 #if defined _MSC_VER && _MSC_VER > 1200 00025 #pragma intrinsic(_InterlockedOr) 00026 #endif 00027 typedef LONG rb_atomic_t; 00028 00029 # define ATOMIC_SET(var, val) InterlockedExchange(&(var), (val)) 00030 # define ATOMIC_INC(var) InterlockedIncrement(&(var)) 00031 # define ATOMIC_DEC(var) InterlockedDecrement(&(var)) 00032 #if defined __GNUC__ 00033 # define ATOMIC_OR(var, val) __asm__("lock\n\t" "orl\t%1, %0" : "=m"(var) : "Ir"(val)) 00034 #elif defined _MSC_VER && _MSC_VER <= 1200 00035 # define ATOMIC_OR(var, val) rb_w32_atomic_or(&(var), (val)) 00036 static inline void 00037 rb_w32_atomic_or(volatile rb_atomic_t *var, rb_atomic_t val) 00038 { 00039 #ifdef _M_IX86 00040 __asm mov eax, var; 00041 __asm mov ecx, val; 00042 __asm lock or [eax], ecx; 00043 #else 00044 #error unsupported architecture 00045 #endif 00046 } 00047 #else 00048 # define ATOMIC_OR(var, val) _InterlockedOr(&(var), (val)) 00049 #endif 00050 # define ATOMIC_EXCHANGE(var, val) InterlockedExchange(&(var), (val)) 00051 00052 # ifdef _M_AMD64 00053 # define ATOMIC_SIZE_ADD(var, val) InterlockedExchangeAdd64(&(var), (val)) 00054 # define ATOMIC_SIZE_SUB(var, val) InterlockedExchangeAdd64(&(var), -(val)) 00055 # define ATOMIC_SIZE_INC(var) InterlockedIncrement64(&(var)) 00056 # define ATOMIC_SIZE_DEC(var) InterlockedDecrement64(&(var)) 00057 # define ATOMIC_SIZE_EXCHANGE(var, val) InterlockedExchange64(&(var), (val)) 00058 # else 00059 # define ATOMIC_SIZE_ADD(var, val) InterlockedExchangeAdd((LONG *)&(var), (val)) 00060 # define ATOMIC_SIZE_SUB(var, val) InterlockedExchangeAdd((LONG *)&(var), -(val)) 00061 # define ATOMIC_SIZE_INC(var) InterlockedIncrement((LONG *)&(var)) 00062 # define ATOMIC_SIZE_DEC(var) InterlockedDecrement((LONG *)&(var)) 00063 # define ATOMIC_SIZE_EXCHANGE(var, val) InterlockedExchange((LONG *)&(var), (val)) 00064 # endif 00065 00066 #elif defined(__sun) && defined(HAVE_ATOMIC_H) 00067 #include <atomic.h> 00068 typedef unsigned int rb_atomic_t; 00069 00070 # define ATOMIC_SET(var, val) (void)atomic_swap_uint(&(var), (val)) 00071 # define ATOMIC_INC(var) atomic_inc_uint(&(var)) 00072 # define ATOMIC_DEC(var) atomic_dec_uint(&(var)) 00073 # define ATOMIC_OR(var, val) atomic_or_uint(&(var), (val)) 00074 # define ATOMIC_EXCHANGE(var, val) atomic_swap_uint(&(var), (val)) 00075 00076 # if SIZEOF_SIZE_T == SIZEOF_LONG 00077 # define ATOMIC_SIZE_ADD(var, val) atomic_add_long(&(var), (val)) 00078 # define ATOMIC_SIZE_SUB(var, val) atomic_add_long(&(var), -(val)) 00079 # define ATOMIC_SIZE_INC(var) atomic_inc_ulong(&(var)) 00080 # define ATOMIC_SIZE_DEC(var) atomic_dec_ulong(&(var)) 00081 # define ATOMIC_SIZE_EXCHANGE(var, val) atomic_swap_ulong(&(var), (val)) 00082 # else 00083 # define ATOMIC_SIZE_ADD(var, val) atomic_add_int(&(var), (val)) 00084 # define ATOMIC_SIZE_SUB(var, val) atomic_add_int(&(var), -(val)) 00085 # define ATOMIC_SIZE_INC(var) atomic_inc_uint(&(var)) 00086 # define ATOMIC_SIZE_DEC(var) atomic_dec_uint(&(var)) 00087 # define ATOMIC_SIZE_EXCHANGE(var, val) atomic_swap_uint(&(var), (val)) 00088 # endif 00089 00090 #else 00091 typedef int rb_atomic_t; 00092 #define NEED_RUBY_ATOMIC_EXCHANGE 00093 extern rb_atomic_t ruby_atomic_exchange(rb_atomic_t *ptr, rb_atomic_t val); 00094 00095 # define ATOMIC_SET(var, val) (void)((var) = (val)) 00096 # define ATOMIC_INC(var) ((var)++) 00097 # define ATOMIC_DEC(var) ((var)--) 00098 # define ATOMIC_OR(var, val) ((var) |= (val)) 00099 # define ATOMIC_EXCHANGE(var, val) ruby_atomic_exchange(&(var), (val)) 00100 00101 # define ATOMIC_SIZE_ADD(var, val) (void)((var) += (val)) 00102 # define ATOMIC_SIZE_SUB(var, val) (void)((var) -= (val)) 00103 # define ATOMIC_SIZE_INC(var) ((var)++) 00104 # define ATOMIC_SIZE_DEC(var) ((var)--) 00105 # define ATOMIC_SIZE_EXCHANGE(var, val) atomic_size_exchange(&(var), (val)) 00106 static inline size_t 00107 atomic_size_exchange(size_t *ptr, size_t val) 00108 { 00109 size_t old = *ptr; 00110 *ptr = val; 00111 return old; 00112 } 00113 #endif 00114 00115 #endif /* RUBY_ATOMIC_H */ 00116
1.7.6.1