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void (*signal (int signum,void (*handle)(int)))(int);ÉèÖÃij¸öÐźŵĴ¦Àí·½·¨
int sigaction(int signum,const struct sigaction *act,struct sigaction *oldact);ÓÃÓÚ¼ì²é»ò¸Ä±ä½ø³ÌÔÚ½Óµ½ÐźÅʱµÄ¶¯×÷
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static inline void sigaddset(sigset_t *set,int _sig);
static inline void sigdelset(sigset_t *set,int _sig);
static inline void sigismember(sigset_t *set,int _sig);
static inline void sigfindinword(unsigned long word);
static inline void sigemptyset(sigset_t *set);
static inline void sigfillset(sigset_t *set);
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int sigprocmask(int how,const sigset_t *set,sigset_t *oldset);
int sigpending(sigset_t *set);
int siguspend(const sigset_t *mask);
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int msgget(key_t,int flag);
int msgrcv(int msqid,struct msgbuf *msgp,int msgsz,long mtype,int msgflg);
int msgsnd(int msqid,struct msgbuf *msgp,int msgz,int msgflg);
int msgctl(int msgqid,int cmd,struct msqid_ds *buf);
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int pthread_create(pthread_t *thread,pthread_attr_t *attr,void *(*start_routine)(void *),void *arg);
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void pthread_testcancel(void);
void pthread_cancel(pthread_t thread);
int pthread_setcanceltype(int type,int *oldtype);
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int pthread_key_create(pthread_key_t *_key,void (*_destr_function)(void *_THROW);
int pthreadd_key_delete(pthread_key_t _key) _THROW;
int pthread_setspecific(pthread_key_t _key, _const void *_pointer) _THROW;
void *pthread_getspecific(pthread_key_t _key) THROW;
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int pthread_mutex_init (pthread_mutex_t *_testrict _mutex,_const pthread_mutexattr *_restrict _mutex_attr) _THROW;
int pthread_mutex_destroy(pthread_mutex_t *_mutex) _THROW;
int pthread_mutex_trylock(pthread_mutex_t *_mutex) _THROW;
int pthread_mutex_lock(pthread_mutex_t *mutex) _THROW;
int pthread_mutex_unlock(pthread_mutex_t *_mutex) _THROW;
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int thread_cond_init(pthread_cond_t *_restrict _cond,_const pthread_condattr_t *_restrict _cond_attr) _THROW;
int pthread_cond_destroy(pthread_cond_t *_cond)