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#include<pthread.h>
#include<stdio.h>
#include <errno.h>
pthread_cond_t done;
pthread_mutex_t mutex;
void*cond_wait(void*p){
while(1){
printf("%dwait\n",(int)p);
pthread_cond_wait(&done,&mutex);
printf("%dwakeup\n",(int)p);
}
}
int main(){
int status;
int i=1;
pthread_t p;
status=pthread_mutex_init(&mutex,NULL);
pthread_mutex_lock(&mutex);
pthread_cond_init(&done,NULL);
pthread_create(&p,NULL,cond_wait,(void*)1);
while(1){
sleep(1);
pthread_cond_signal(&done);
}
}
線程剛剛醒來,而不是阻止互斥體,因爲它不調用調用調用pthread_cond_wait無鎖mutex.Is是正確的?呼叫調用pthread_cond_wait沒有鎖定互斥