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ruby30
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include
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ruby
atomic.h
#ifndef RUBY_ATOMIC_H #define RUBY_ATOMIC_H /* * - RUBY_ATOMIC_CAS, RUBY_ATOMIC_EXCHANGE, RUBY_ATOMIC_FETCH_*: * return the old * value. * - RUBY_ATOMIC_ADD, RUBY_ATOMIC_SUB, RUBY_ATOMIC_INC, RUBY_ATOMIC_DEC, RUBY_ATOMIC_OR, RUBY_ATOMIC_SET: * may be void. */ #if 0 #elif defined HAVE_GCC_ATOMIC_BUILTINS typedef unsigned int rb_atomic_t; # define RUBY_ATOMIC_FETCH_ADD(var, val) __atomic_fetch_add(&(var), (val), __ATOMIC_SEQ_CST) # define RUBY_ATOMIC_FETCH_SUB(var, val) __atomic_fetch_sub(&(var), (val), __ATOMIC_SEQ_CST) # define RUBY_ATOMIC_OR(var, val) __atomic_fetch_or(&(var), (val), __ATOMIC_SEQ_CST) # define RUBY_ATOMIC_EXCHANGE(var, val) __atomic_exchange_n(&(var), (val), __ATOMIC_SEQ_CST) # define RUBY_ATOMIC_CAS(var, oldval, newval) RB_GNUC_EXTENSION_BLOCK( \ __typeof__(var) oldvaldup = (oldval); /* oldval should not be modified */ \ __atomic_compare_exchange_n(&(var), &oldvaldup, (newval), 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST); \ oldvaldup ) # define RUBY_ATOMIC_GENERIC_MACRO 1 #elif defined HAVE_GCC_SYNC_BUILTINS /* @shyouhei hack to support atomic operations in case of gcc. Gcc * has its own pseudo-insns to support them. See info, or * http://gcc.gnu.org/onlinedocs/gcc/Atomic-Builtins.html */ typedef unsigned int rb_atomic_t; /* Anything OK */ # define RUBY_ATOMIC_FETCH_ADD(var, val) __sync_fetch_and_add(&(var), (val)) # define RUBY_ATOMIC_FETCH_SUB(var, val) __sync_fetch_and_sub(&(var), (val)) # define RUBY_ATOMIC_OR(var, val) __sync_fetch_and_or(&(var), (val)) # define RUBY_ATOMIC_EXCHANGE(var, val) __sync_lock_test_and_set(&(var), (val)) # define RUBY_ATOMIC_CAS(var, oldval, newval) __sync_val_compare_and_swap(&(var), (oldval), (newval)) # define RUBY_ATOMIC_GENERIC_MACRO 1 #elif defined _WIN32 #if RBIMPL_COMPILER_SINCE(MSVC, 13, 0, 0) #pragma intrinsic(_InterlockedOr) #endif typedef LONG rb_atomic_t; # define RUBY_ATOMIC_SET(var, val) InterlockedExchange(&(var), (val)) # define RUBY_ATOMIC_INC(var) InterlockedIncrement(&(var)) # define RUBY_ATOMIC_DEC(var) InterlockedDecrement(&(var)) # define RUBY_ATOMIC_FETCH_ADD(var, val) InterlockedExchangeAdd(&(var), (val)) # define RUBY_ATOMIC_FETCH_SUB(var, val) InterlockedExchangeAdd(&(var), -(LONG)(val)) #if defined __GNUC__ # define RUBY_ATOMIC_OR(var, val) __asm__("lock\n\t" "orl\t%1, %0" : "=m"(var) : "Ir"(val)) #elif RBIMPL_COMPILER_BEFORE(MSVC, 13, 0, 0) # define RUBY_ATOMIC_OR(var, val) rb_w32_atomic_or(&(var), (val)) static inline void rb_w32_atomic_or(volatile rb_atomic_t *var, rb_atomic_t val) { #ifdef _M_IX86 __asm mov eax, var; __asm mov ecx, val; __asm lock or [eax], ecx; #else #error unsupported architecture #endif } #else # define RUBY_ATOMIC_OR(var, val) _InterlockedOr(&(var), (val)) #endif # define RUBY_ATOMIC_EXCHANGE(var, val) InterlockedExchange(&(var), (val)) # define RUBY_ATOMIC_CAS(var, oldval, newval) InterlockedCompareExchange(&(var), (newval), (oldval)) # if RBIMPL_COMPILER_BEFORE(MSVC, 13, 0, 0) static inline rb_atomic_t rb_w32_atomic_cas(volatile rb_atomic_t *var, rb_atomic_t oldval, rb_atomic_t newval) { return (rb_atomic_t)InterlockedCompareExchange((PVOID *)var, (PVOID)newval, (PVOID)oldval); } # undef RUBY_ATOMIC_CAS # define RUBY_ATOMIC_CAS(var, oldval, newval) rb_w32_atomic_cas(&(var), (oldval), (newval)) # endif # ifdef _M_AMD64 # define RUBY_ATOMIC_SIZE_ADD(var, val) InterlockedExchangeAdd64((LONG_LONG *)&(var), (val)) # define RUBY_ATOMIC_SIZE_SUB(var, val) InterlockedExchangeAdd64((LONG_LONG *)&(var), -(LONG)(val)) # define RUBY_ATOMIC_SIZE_INC(var) InterlockedIncrement64(&(var)) # define RUBY_ATOMIC_SIZE_DEC(var) InterlockedDecrement64(&(var)) # define RUBY_ATOMIC_SIZE_EXCHANGE(var, val) InterlockedExchange64(&(var), (val)) # define RUBY_ATOMIC_SIZE_CAS(var, oldval, newval) InterlockedCompareExchange64(&(var), (newval), (oldval)) # else # define RUBY_ATOMIC_SIZE_ADD(var, val) InterlockedExchangeAdd((LONG *)&(var), (val)) # define RUBY_ATOMIC_SIZE_SUB(var, val) InterlockedExchangeAdd((LONG *)&(var), -(LONG)(val)) # define RUBY_ATOMIC_SIZE_INC(var) InterlockedIncrement((LONG *)&(var)) # define RUBY_ATOMIC_SIZE_DEC(var) InterlockedDecrement((LONG *)&(var)) # define RUBY_ATOMIC_SIZE_EXCHANGE(var, val) InterlockedExchange((LONG *)&(var), (val)) # endif # ifdef InterlockedExchangePointer # define RUBY_ATOMIC_PTR_EXCHANGE(var, val) InterlockedExchangePointer((PVOID volatile *)&(var), (PVOID)(val)) # endif /* See below for definitions of other situations */ #elif defined(__sun) && defined(HAVE_ATOMIC_H) #include <atomic.h> typedef unsigned int rb_atomic_t; # define RUBY_ATOMIC_INC(var) atomic_inc_uint(&(var)) # define RUBY_ATOMIC_DEC(var) atomic_dec_uint(&(var)) # define RUBY_ATOMIC_FETCH_ADD(var, val) rb_atomic_fetch_add(&(var), (val)) # define RUBY_ATOMIC_FETCH_SUB(var, val) rb_atomic_fetch_sub(&(var), (val)) # define RUBY_ATOMIC_ADD(var, val) atomic_add_uint(&(var), (val)) # define RUBY_ATOMIC_SUB(var, val) atomic_sub_uint(&(var), (val)) # define RUBY_ATOMIC_OR(var, val) atomic_or_uint(&(var), (val)) # define RUBY_ATOMIC_EXCHANGE(var, val) atomic_swap_uint(&(var), (val)) # define RUBY_ATOMIC_CAS(var, oldval, newval) atomic_cas_uint(&(var), (oldval), (newval)) static inline rb_atomic_t rb_atomic_fetch_add(volatile rb_atomic_t *var, rb_atomic_t val) { return atomic_add_int_nv(var, val) - val; } static inline rb_atomic_t rb_atomic_fetch_sub(volatile rb_atomic_t *var, rb_atomic_t val) { return atomic_add_int_nv(var, (rb_atomic_t)(-(int)val)) + val; } # if defined(_LP64) || defined(_I32LPx) # define RUBY_ATOMIC_SIZE_ADD(var, val) atomic_add_long(&(var), (val)) # define RUBY_ATOMIC_SIZE_SUB(var, val) atomic_add_long(&(var), -(val)) # define RUBY_ATOMIC_SIZE_INC(var) atomic_inc_ulong(&(var)) # define RUBY_ATOMIC_SIZE_DEC(var) atomic_dec_ulong(&(var)) # define RUBY_ATOMIC_SIZE_EXCHANGE(var, val) atomic_swap_ulong(&(var), (val)) # define RUBY_ATOMIC_SIZE_CAS(var, oldval, val) atomic_cas_ulong(&(var), (oldval), (val)) # else # define RUBY_ATOMIC_SIZE_ADD(var, val) atomic_add_int(&(var), (val)) # define RUBY_ATOMIC_SIZE_SUB(var, val) atomic_add_int(&(var), -(val)) # define RUBY_ATOMIC_SIZE_INC(var) atomic_inc_uint(&(var)) # define RUBY_ATOMIC_SIZE_DEC(var) atomic_dec_uint(&(var)) # define RUBY_ATOMIC_SIZE_EXCHANGE(var, val) atomic_swap_uint(&(var), (val)) # endif #else # error No atomic operation found #endif #ifndef RUBY_ATOMIC_SET # define RUBY_ATOMIC_SET(var, val) (void)RUBY_ATOMIC_EXCHANGE(var, val) #endif #ifndef RUBY_ATOMIC_ADD # define RUBY_ATOMIC_ADD(var, val) (void)RUBY_ATOMIC_FETCH_ADD(var, val) #endif #ifndef RUBY_ATOMIC_SUB # define RUBY_ATOMIC_SUB(var, val) (void)RUBY_ATOMIC_FETCH_SUB(var, val) #endif #ifndef RUBY_ATOMIC_INC # define RUBY_ATOMIC_INC(var) RUBY_ATOMIC_ADD(var, 1) #endif #ifndef RUBY_ATOMIC_DEC # define RUBY_ATOMIC_DEC(var) RUBY_ATOMIC_SUB(var, 1) #endif #ifndef RUBY_ATOMIC_SIZE_INC # define RUBY_ATOMIC_SIZE_INC(var) RUBY_ATOMIC_INC(var) #endif #ifndef RUBY_ATOMIC_SIZE_DEC # define RUBY_ATOMIC_SIZE_DEC(var) RUBY_ATOMIC_DEC(var) #endif #ifndef RUBY_ATOMIC_SIZE_EXCHANGE # define RUBY_ATOMIC_SIZE_EXCHANGE(var, val) RUBY_ATOMIC_EXCHANGE(var, val) #endif #ifndef RUBY_ATOMIC_SIZE_CAS # define RUBY_ATOMIC_SIZE_CAS(var, oldval, val) RUBY_ATOMIC_CAS(var, oldval, val) #endif #ifndef RUBY_ATOMIC_SIZE_ADD # define RUBY_ATOMIC_SIZE_ADD(var, val) RUBY_ATOMIC_ADD(var, val) #endif #ifndef RUBY_ATOMIC_SIZE_SUB # define RUBY_ATOMIC_SIZE_SUB(var, val) RUBY_ATOMIC_SUB(var, val) #endif #if RUBY_ATOMIC_GENERIC_MACRO # ifndef RUBY_ATOMIC_PTR_EXCHANGE # define RUBY_ATOMIC_PTR_EXCHANGE(var, val) RUBY_ATOMIC_EXCHANGE(var, val) # endif # ifndef RUBY_ATOMIC_PTR_CAS # define RUBY_ATOMIC_PTR_CAS(var, oldval, newval) RUBY_ATOMIC_CAS(var, oldval, newval) # endif # ifndef RUBY_ATOMIC_VALUE_EXCHANGE # define RUBY_ATOMIC_VALUE_EXCHANGE(var, val) RUBY_ATOMIC_EXCHANGE(var, val) # endif # ifndef RUBY_ATOMIC_VALUE_CAS # define RUBY_ATOMIC_VALUE_CAS(var, oldval, val) RUBY_ATOMIC_CAS(var, oldval, val) # endif #endif #ifndef RUBY_ATOMIC_PTR_EXCHANGE # if SIZEOF_VOIDP == SIZEOF_SIZE_T # define RUBY_ATOMIC_PTR_EXCHANGE(var, val) (void *)RUBY_ATOMIC_SIZE_EXCHANGE(*(size_t *)&(var), (size_t)(val)) # else # error No atomic exchange for void* # endif #endif #ifndef RUBY_ATOMIC_PTR_CAS # if SIZEOF_VOIDP == SIZEOF_SIZE_T # define RUBY_ATOMIC_PTR_CAS(var, oldval, val) (void *)RUBY_ATOMIC_SIZE_CAS(*(size_t *)&(var), (size_t)(oldval), (size_t)(val)) # else # error No atomic compare-and-set for void* # endif #endif #ifndef RUBY_ATOMIC_VALUE_EXCHANGE # if SIZEOF_VALUE == SIZEOF_SIZE_T # define RUBY_ATOMIC_VALUE_EXCHANGE(var, val) RUBY_ATOMIC_SIZE_EXCHANGE(*(size_t *)&(var), (size_t)(val)) # else # error No atomic exchange for VALUE # endif #endif #ifndef RUBY_ATOMIC_VALUE_CAS # if SIZEOF_VALUE == SIZEOF_SIZE_T # define RUBY_ATOMIC_VALUE_CAS(var, oldval, val) RUBY_ATOMIC_SIZE_CAS(*(size_t *)&(var), (size_t)(oldval), (size_t)(val)) # else # error No atomic compare-and-set for VALUE # endif #endif #endif /* RUBY_ATOMIC_H */
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