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我有一个消息队列,我从中获取消息循环。问题是我不知道如何退出循环。 msgrcv返回类型size_t,所以它继续前进。我应该比较什么值的返回值,所以我可以退出循环?IPC消息队列。 msgrcv系统调用。系统V.如何走出循环
while(msgrcv(msqid, &msgreceived, sizeof(msgreceived), BUFFER_CHANGED, 0) != -1){
printf("%d %d %d %d ",msgreceived.value0,msgreceived.value1,msgreceived.value2,msgreceived.value3);