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#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <pthread.h>
void task1(int *counter);
void task2(int *counter);
void cleanup(int counter1, int counter2);
int g1 = 0;
int g2 = 0;
int main(int argc, char *argv[])
{
pthread_t thrd1, thrd2;
int ret;
/* Create the first thread */
ret = pthread_create(&thrd1, NULL, (void *)task1, (void *)&g1);
if(ret) {
perror("pthread_create: task1");
exit(EXIT_FAILURE);
}
/* Create the second thread */
ret = pthread_create(&thrd2, NULL, (void *)task2, (void *)&g2);
if(ret) {
perror("pthread_create: task2");
exit(EXIT_FAILURE);
}
pthread_join(thrd2, NULL);
pthread_join(thrd1, NULL);
cleanup(g1, g2);
printf("%x,%x\n",EXIT_FAILURE,EXIT_SUCCESS);
exit(EXIT_SUCCESS);
}
void task1(int *counter)
{
while(*counter < 5) {
printf("task1 count: %d\n", *counter);
(*counter)++;
sleep(1);
}
}
void task2(int *counter)
{
while(*counter < 5) {
printf("task2 count: %d\n", *counter);
(*counter)++;
}
}
void cleanup(int counter1, int counter2)
{
printf("total iterations: %d\n", counter1 + counter2);
}
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出来的结果是：
task1 count: 0
task2 count: 0
task2 count: 1
task2 count: 2
task2 count: 3
task2 count: 4
task1 count: 1
task1 count: 2
task1 count: 3
task1 count: 4
total iterations: 10
书上的说明是thrd1被thrd2用对自己的pthread_join调用所中断，直到thrd2执行完毕。不明白啊，望高手解答！ |
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发表于 2009-03-01 21:37
