C语言中pthread_create函数实现向线程函数传递参数
#include "apue.h"
#include
#include "apueerror.h"
#include
#include
using namespace std;
pthread_t ntid;
void printids(const char *s){
pid_t pid;
pthread_t tid;
pid = getpid();
tid = pthread_self();
printf("%s pid %lu tid %lu (0x%lx)
", s, (unsigned long)pid,
(unsigned long)tid, (unsigned long)tid);
}
struct Param {
int a;
int b;
int c;
};
void *thr_fn(void *arg) {
cout << "----enter sub thread--------" << endl;
Param tmp = *(Param *)arg;
cout << "tmp.a=" << tmp.a << endl;
cout << "tmp.b=" << tmp.b << endl;
cout << "tmp.c=" << tmp.c << endl;
printids("new thread: ");
cout << "Change to C++ code!!" << endl;
cout << "----exit from sub thread----" << endl;
return((void *)0);
}
int main(void){
int err;
int num = 123;
Param param1;
param1.a = 11;
param1.b = 22;
param1.c = 33;
//通过结构体向线程函数传入多个参数
err = pthread_create(&ntid, NULL, thr_fn, ¶m1);
if (err != 0)
err_exit(err, "can't create thread");
printids("main thread:");
sleep(1);
exit(0);
}