pthread_attr_t就是对应线程的属性

/*#include <pthread.h>int pthread_attr_init(pthread_attr_t *attr);初始化线程属性变量int pthread_attr_destroy(pthread_attr_t *attr);释放线程属性资源int pthread_attr_getdetachstate(const pthread_attr_t *attr, int *detachstate);获取线程分离的状态属性int pthread_attr_setdetachstate(pthread_attr_t *attr, int detachstate);设置线程分离的状态属性
*/#include <stdio.h>
#include <pthread.h>
#include <string.h>
#include <unistd.h>void* callback(void* arg) {printf("child thread id:%ld", pthread_self());return NULL;
}int main() {//创建一个线程属性变量pthread_attr_t attr;//初始化pthread_attr_init(&attr);//设置属性pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);//创建一个子线程pthread_t tid;int ret = pthread_create(&tid, &attr, callback, NULL);if(ret != 0) {char* strerr = strerror(ret);printf("error: %s\n", strerr);}printf("tid: %ld, main thread id:%ld\n", tid, pthread_self());size_t size;pthread_attr_getstacksize(&attr, &size);printf("%ld\n", size);pthread_attr_destroy(&attr);pthread_exit(NULL);return 0;
}