Linux多线程实例练习 - pthread_create()

Linux多线程实例练习 pthread_create()：创建一个线程

int pthread_create(pthread_t *tidp,
        const pthread_attr_t *attr,
        (void*)(*start_rtn)(void*),
        void *arg);

1、代码如下 xx_pthread_create.c

 #include <pthread.h>
 #include <stdio.h>
 #include <unistd.h>
 #include <sys/time.h>   // for gettimeofday

 #define debugMsg(fmt, arg...)\
     do{\
         unsigned long lSec = ; unsigned long lUSec = ;\
         getTimeuSec(&lSec, &lUSec);\
         printf("[%ld.%06ld]:", lSec, lUSec);\
         printf(fmt, ##arg);\
     }while()

 int getTimeuSec(unsigned long *lSec, unsigned long *lUSec)
 {
     struct timeval start;
     gettimeofday( &start, NULL );
     *lSec = start.tv_sec;
     *lUSec = start.tv_usec;

     return ;
 }
 void * doPrint(void *arg)
 {
     int i = ;
     while(i < )
     {
         debugMsg("pthread %2d; main %d\n", i++, *(int*)arg);
         usleep();
     }

     return NULL;
 }

 int main()
 {
     pthread_t pid;
     int iX = ;
     pthread_create(&pid, NULL, doPrint, &iX);
     while(iX <=  + )
     {
         debugMsg("main : %d\n", iX++);
         usleep();
     }

     return ;
 }

2、CentOS 下编译通过

g++ -g -c -o xx_pthread_create.o xx_pthread_create.c
g++ -g -o xx_pthread_create xx_pthread_create.o -lpthread

3、运行结果

[1422496189.763862]:main :
[1422496189.764341]:pthread  ; main
[1422496189.965627]:pthread  ; main
[1422496190.065601]:main :
[1422496190.166510]:pthread  ; main
[1422496190.366393]:main :
[1422496190.367391]:pthread  ; main
[1422496190.568275]:pthread  ; main
[1422496190.667215]:main :
[1422496190.769157]:pthread  ; main
[1422496190.968039]:main :
[1422496190.970323]:pthread  ; main
[1422496191.171922]:pthread  ; main
[1422496191.269869]:main :
[1422496191.373803]:pthread  ; main
[1422496191.571696]:main :
[1422496191.574958]:pthread  ; main
[1422496191.776566]:pthread ; main
[1422496191.873512]:main :
[1422496191.977457]:pthread ; main
[1422496192.174348]:main :
[1422496192.178362]:pthread ; main
[1422496192.379214]:pthread ; main
[1422496192.475159]:main :
[1422496192.580095]:pthread ; main
[1422496192.776006]:main :
[1422496192.781267]:pthread ; main
[1422496192.981968]:pthread ; main
[1422496193.076864]:main :
[1422496193.182797]:pthread ; main
[1422496193.377656]:main :
[1422496193.384089]:pthread ; main
[1422496193.584595]:pthread ; main
[1422496193.678472]:main :
[1422496193.785406]:pthread ; main
[1422496193.980296]:main :
[1422496193.987689]:pthread ; main
[1422496194.189201]:pthread ; main
[1422496194.281149]:main :
[1422496194.390049]:pthread ; main
[1422496194.582987]:main :
[1422496194.590944]:pthread ; main
[1422496194.792793]:pthread ; main
[1422496194.883821]:main :
[1422496194.993852]:pthread ; main
[1422496195.184826]:main :
[1422496195.195665]:pthread ; main
[1422496195.397447]:pthread ; main
[1422496195.486468]:main :
[1422496195.598408]:pthread ; main
[1422496195.787329]:main :