Created
June 3, 2014 14:17
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double fork
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| int main(void){ | |
| pid_t = pid; | |
| if((pid = fork()) < 0){ | |
| err; | |
| } | |
| else if(pid == 0){ | |
| if((pid = fork()) < 0) err; | |
| else if(pid > 0) exit(0); | |
| sleep(2); | |
| printf("second child"); | |
| exit(0); | |
| } | |
| if (waitpid(pid, NULL, 0) != pid) | |
| err; | |
| exit(0); | |
| } |
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prevent zombie process