SIG_SETMASK       122 native_client_sdk/src/libraries/third_party/newlib-extras/sys/signal.h #define SIG_SETMASK 0	/* set mask with sigprocmask() */
SIG_SETMASK       336 native_client_sdk/src/libraries/third_party/pthreads-win32/pthread.h #define SIG_SETMASK 2