THREAD_SYSTEM_INIT  136 regint.h       #define THREAD_SYSTEM_INIT      InitializeCriticalSection(&gOnigMutex)
THREAD_SYSTEM_INIT  145 regint.h       #define THREAD_SYSTEM_INIT      pthread_mutex_init(&gOnigMutex, NULL)
THREAD_SYSTEM_INIT  155 regint.h       #define THREAD_SYSTEM_INIT      /* depend on thread system */