class Object::Atomic
Public Class Methods
Source
static VALUE ir_initialize(int argc, VALUE* argv, VALUE self) { VALUE value = Qnil; if (rb_scan_args(argc, argv, "01", &value) == 1) { value = argv[0]; } DATA_PTR(self) = (void *) value; return Qnil; }
Public Instance Methods
Source
static VALUE ir_compare_and_set(volatile VALUE self, VALUE expect_value, VALUE new_value) { #if __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ >= 1050 if (OSAtomicCompareAndSwap64(expect_value, new_value, &DATA_PTR(self))) { return Qtrue; } #elif defined(__sun) /* Assuming VALUE is uintptr_t */ /* Based on the definition of uintptr_t from /usr/include/sys/int_types.h */ #if defined(_LP64) || defined(_I32LPx) /* 64-bit: uintptr_t === unsigned long */ if (atomic_cas_ulong((uintptr_t *) &DATA_PTR(self), expect_value, new_value)) { return Qtrue; } #else /* 32-bit: uintptr_t === unsigned int */ if (atomic_cas_uint((uintptr_t *) &DATA_PTR(self), expect_value, new_value)) { return Qtrue; } #endif #elif defined _MSC_VER && defined _M_AMD64 if (InterlockedCompareExchange64((LONGLONG*)&DATA_PTR(self), new_value, expect_value)) { return Qtrue; } #elif defined _MSC_VER && defined _M_IX86 if (InterlockedCompareExchange((LONG*)&DATA_PTR(self), new_value, expect_value)) { return Qtrue; } #else if (__sync_bool_compare_and_swap(&DATA_PTR(self), expect_value, new_value)) { return Qtrue; } #endif return Qfalse; }
Also aliased as: compare_and_swap
Source
static VALUE ir_get(VALUE self) { #if HAVE_GCC_SYNC __sync_synchronize(); #elif defined _MSC_VER MemoryBarrier(); #elif __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ >= 1050 OSMemoryBarrier(); #endif return (VALUE) DATA_PTR(self); }
Also aliased as: value
Source
static VALUE ir_get_and_set(VALUE self, VALUE new_value) { VALUE old_value = ir_get(self); ir_set(self, new_value); return old_value; }
Also aliased as: swap
Source
static VALUE ir_set(VALUE self, VALUE new_value) { DATA_PTR(self) = (void *) new_value; #if HAVE_GCC_SYNC __sync_synchronize(); #elif defined _MSC_VER MemoryBarrier(); #elif __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ >= 1050 OSMemoryBarrier(); #endif return new_value; }
Also aliased as: value=