me_producer.c

这是在linux环境下C++做的生产者和消费者问题

/******************************producer.c**********************************/
#include "ipc.h"
int main(int arc,char *argv[]){

key_t buff_key=101;/*material's key*/
    int count=0;
    buff_num=sizeof i;
    buff_flag=IPC_CREAT|0644;
    buff_key=101;

    full_key=201;
    empty_key=202;
    pro_ex_key=301;
    cons_ex_key=302;
    full_value=0;
    empty_value=1;
    pro_ex_value=1;
    cons_ex_value=1;
    sem_flag=IPC_CREAT|0644;

    buff_ptr=(int*)set_shm(buff_key,buff_num,buff_flag);
   
    full_sem=set_sem(full_key,full_value,sem_flag);
    empty_sem=set_sem(empty_key,empty_value,sem_flag);
    pro_ex_sem=set_sem(pro_ex_key,pro_ex_value,sem_flag);
    while(count++<12){
        sleep(2);
        operationP(empty_sem);
        operationP(pro_ex_sem);
        printf("producer %d sending %d\n",getpid(),((buff_ptr[0]+1)%3));
        buff_ptr[0]=(buff_ptr[0]+1)%3;
        operationV(full_sem);
        operationV(pro_ex_sem);
         }
}