消息队列 <mqueue.h>
mq_open /mq_close/mq_unlink
mq_getattr/mq_setattr
mq_send/mq_receive/mq_notify
信号量<semaphore.h>
sem_open/sem_close/sem_unlink
sem_init/sem_destroy
sem_wait/sem_trywait/sem_post/sem_getvalue
共享内存<sys/mman.h>
shm_oepn/shm_unlink
ftruncate/fstat
mmap/munmap