+#define TR_MUTEX(data) _tracef("%s@%d: me:%08lX COUNT:%2u/%2d/%6d/%2d/%s%9u: " #data, \
+ __FILE__, __LINE__, \
+ (unsigned long) (pthread_self()), \
+ data.__data.__lock, \
+ data.__data.__count, \
+ data.__data.__owner, \
+ data.__data.__kind, \
+ (data.__data.__nusers > 5) ? " OOPS " : "", \
+ data.__data.__nusers)
+#define TR_GLOBAL_MUTEX(name) TR_MUTEX(_nc_globals.mutex_##name)
+
+#ifdef USE_PTHREADS
+#if USE_REENTRANT
+#include <pthread.h>
+extern NCURSES_EXPORT(int) _nc_mutex_lock(pthread_mutex_t *);
+extern NCURSES_EXPORT(int) _nc_mutex_trylock(pthread_mutex_t *);
+extern NCURSES_EXPORT(int) _nc_mutex_unlock(pthread_mutex_t *);
+#define _nc_lock_global(name) _nc_mutex_lock(&_nc_globals.mutex_##name)
+#define _nc_try_global(name) _nc_mutex_trylock(&_nc_globals.mutex_##name)
+#define _nc_unlock_global(name) _nc_mutex_unlock(&_nc_globals.mutex_##name)
+
+extern NCURSES_EXPORT(void) _nc_lock_window(WINDOW *);
+extern NCURSES_EXPORT(void) _nc_unlock_window(WINDOW *);
+
+#else
+#error POSIX threads requires --enable-reentrant option
+#endif
+#else
+#define _nc_lock_global(name) /* nothing */
+#define _nc_try_global(name) 0
+#define _nc_unlock_global(name) /* nothing */
+
+#define _nc_lock_window(name) (void) TRUE
+#define _nc_unlock_window(name) /* nothing */
+
+#endif
+
+#define _nc_lock_screen(name) /* nothing */
+#define _nc_unlock_screen(name) /* nothing */
+