yinsua

摘要： 转：http://www.360doc.com/content/11/0114/14/1317564_86488642.shtml##include#include#include#include#include#include#includeint main(){ int pid,val,semid;//中者为可用资源数量，后者为信号灯（即信号量）集的识别代号 key_t semkey; if((semkey=ftok("./test.c",1))0)//父进程，先索取共享资源，而后释放 { struct sembuf p_op_buf,v_op_buf; printf( 阅读全文