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	// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS			// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
	// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.			// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	//			//

	#include "port/port_win.h"			#include "port/port_win.h"

	#include <windows.h>			#include <windows.h>
	#include <cassert>			#include <cassert>
				#include <intrin.h>

	namespace leveldb {			namespace leveldb {
	namespace port {			namespace port {

	Mutex::Mutex() :			Mutex::Mutex() :
	cs_(NULL) {			cs_(NULL) {
	assert(!cs_);			assert(!cs_);
	cs_ = static_cast<void *>(new CRITICAL_SECTION());			cs_ = static_cast<void *>(new CRITICAL_SECTION());
	▲ Show 20 Lines • Show All 95 Lines • ▼ Show 20 Lines
	void* AtomicPointer::NoBarrier_Load() const {			void* AtomicPointer::NoBarrier_Load() const {
	return rep_;			return rep_;
	}			}

	void AtomicPointer::NoBarrier_Store(void* v) {			void AtomicPointer::NoBarrier_Store(void* v) {
	rep_ = v;			rep_ = v;
	}			}

				bool HasAcceleratedCRC32C() {
				#if defined(__x86_64__) \|\| defined(__i386__)
				int cpu_info[4];
				__cpuid(cpu_info, 1);
				return (cpu_info[2] & (1 << 20)) != 0;
				#else
				return false;
				#endif
				}

	}			}
	}			}