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38 lines
860 B
38 lines
860 B
#include <stdio.h>
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#include <stdlib.h>
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#include <pthread.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include <semaphore.h>
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int n=10, in=0,out=0,buffer[10];
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sem_t empty,full;
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void* producer(void *arg){
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int tag= pthread_self()%100;
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int nextPro;
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srand(time(NULL)+tag);
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while(1){
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nextPro = rand()%97;
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sem_wait(&empty);
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buffer[in] = nextPro;
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printf("production:%d %d\n",nextPro,buffer[in]);
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usleep(1000*1000/20);
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in = (in+1)%n;
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sem_post(&full);
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usleep(1000*1000/2);
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}
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}
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void* consumer(void *arg) {
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int item;
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while(1){
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sem_wait(&full);
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item = buffer[out];
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sem_post(&empty);
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printf("consume:%d\n",buffer[out]);
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out = (out+1)%n;
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usleep(1000*1000/10);
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}
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}
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int main(){
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} |