BLOCKING_REGION  1298 thread.c           BLOCKING_REGION({
BLOCKING_REGION  1423 thread.c       	BLOCKING_REGION({
BLOCKING_REGION  3691 thread.c       	BLOCKING_REGION({
BLOCKING_REGION  3855 thread.c       	BLOCKING_REGION({
BLOCKING_REGION   235 thread_win32.c     BLOCKING_REGION(ret = rb_w32_wait_events_blocking(events, num, timeout),
BLOCKING_REGION   289 thread_win32.c     BLOCKING_REGION(ret = rb_w32_sleep(msec),