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tst_thread.c
#include <stdio.h>
#include <pthread.h>
void *thread(void)
{
int i;
for(i=0;i<3;i++)
printf("This is a pthread.\n");
}
int main(void)
{
pthread_t id;
pthread_attr_t *attr ;
sched_param param ;
pthread_attr_init(attr) ;
//pthread_attr_getschedparam(attr,¶m) ;
//param.sched_priority = 3 ;
//pthread_attr_setschedparam(attr,¶m) ;
int i,ret;
ret=pthread_create(&id,NULL,(void*(*)(void*)) thread ,NULL);
if(ret!=0){
printf ("Create pthread error!\n");
return (1) ;
}
for(i=0;i<3;i++)
printf("This is the main process.\n");
pthread_join(id,NULL);
return (0);
}
运行:
./tst_thread
Create pthread error!
是初始化线程属性出错,pthread_attr_init(attr) ;
请问如何解决呢? |
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