linux多线程的创建基本知识

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下列程序模拟两个线程同时执行，一个从1到100，一个从50到100：

#include <stdio.h>#include <stdlib.h>#include <pthread.h>#include <string.h>typedef struct stc_arg{        int start;        int end;}stc_arg;void *th_fun(void *arg){        stc_arg *data = (stc_arg*)arg;        int i = data->start;        for(i; i <= data->end; ++i)        {                //pthread_self():get thread id                printf("pthread_t: %ld, i= %d\n", pthread_self(), i);                //rand creat 0.0~1.0 No.                double r = drand48();                int rt = (int)(r * 100000);                usleep(rt);        }}int main(void){        pthread_t pth1;        pthread_t pth2;        int err;        stc_arg arg1 = {1, 100};        if ((err = pthread_create(&pth1, NULL, th_fun, (void*)&arg1)) != 0)        {                fprintf(stderr, "pthread_create:%s\n", strerror(err));                exit(1);        }        stc_arg arg2 = {50, 100};        if ((err = pthread_create(&pth2, NULL, th_fun, (void*)&arg2)) != 0)        {                fprintf(stderr, "pthread_create:%s\n", strerror(err));                exit(1);        }        sleep(10);        printf("finish!\n");        return 0;}

注意编译多线程要使用-lpthread选项。

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