MACH_MSG_TIMEOUT_NONE 3468 gc/os_dep.c            MACH_MSG_TIMEOUT_NONE,
MACH_MSG_TIMEOUT_NONE 3494 gc/os_dep.c            MACH_MSG_TIMEOUT_NONE,
MACH_MSG_TIMEOUT_NONE 3539 gc/os_dep.c                GC_mprotect_state == GC_MP_DISCARDING ? 0 : MACH_MSG_TIMEOUT_NONE,
MACH_MSG_TIMEOUT_NONE 3587 gc/os_dep.c                        MACH_MSG_TIMEOUT_NONE,