along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
-
#if !defined(LOCK_H_INCLUDED)
#define LOCK_H_INCLUDED
-
#if !defined(_MSC_VER)
# include <pthread.h>
# define lock_grab(x) pthread_mutex_lock(x)
# define lock_release(x) pthread_mutex_unlock(x)
# define lock_destroy(x) pthread_mutex_destroy(x)
-# define cond_destroy(x) pthread_cond_destroy(x);
-# define cond_init(x) pthread_cond_init(x, NULL);
-# define cond_signal(x) pthread_cond_signal(x);
-# define cond_wait(x,y) pthread_cond_wait(x,y);
+# define cond_destroy(x) pthread_cond_destroy(x)
+# define cond_init(x) pthread_cond_init(x, NULL)
+# define cond_signal(x) pthread_cond_signal(x)
+# define cond_wait(x,y) pthread_cond_wait(x,y)
#else
#include <windows.h>
#undef WIN32_LEAN_AND_MEAN
+// Default fast and race free locks and condition variables
+#if !defined(OLD_LOCKS)
+
typedef SRWLOCK Lock;
typedef CONDITION_VARIABLE WaitCondition;
# define lock_grab(x) AcquireSRWLockExclusive(x)
# define lock_release(x) ReleaseSRWLockExclusive(x)
# define lock_destroy(x) (x)
-# define cond_destroy(x) (x);
-# define cond_init(x) InitializeConditionVariable(x);
-# define cond_signal(x) WakeConditionVariable(x);
-# define cond_wait(x,y) SleepConditionVariableSRW(x, y, INFINITE,0);
+# define cond_destroy(x) (x)
+# define cond_init(x) InitializeConditionVariable(x)
+# define cond_signal(x) WakeConditionVariable(x)
+# define cond_wait(x,y) SleepConditionVariableSRW(x, y, INFINITE,0)
+
+// Fallback solution to build for Windows XP and older versions, note that
+// cond_wait() is racy between lock_release() and WaitForSingleObject().
+#else
+
+typedef CRITICAL_SECTION Lock;
+typedef HANDLE WaitCondition;
+
+# define lock_init(x) InitializeCriticalSection(x)
+# define lock_grab(x) EnterCriticalSection(x)
+# define lock_release(x) LeaveCriticalSection(x)
+# define lock_destroy(x) DeleteCriticalSection(x)
+# define cond_init(x) { *x = CreateEvent(0, FALSE, FALSE, 0); }
+# define cond_destroy(x) CloseHandle(*x)
+# define cond_signal(x) SetEvent(*x)
+# define cond_wait(x,y) { lock_release(y); WaitForSingleObject(*x, INFINITE); lock_grab(y); }
+#endif
#endif