我正在为我的小守护进程进行单元测试,但是我无法从分叉进程中获取正确的退出代码。如果我只运行其中一个测试用例,它们可以正常工作,但如果我连续运行两个,则第二个失败,因为它没有获得EXIT_SUCCESS作为返回码。我已经检查过,第二个测试用例确实调用了exit(EXIT_SUCCESS),所以它应该返回,但不知怎的,我得到另一个子进程。
我错过了什么?
bool test_setup() {
pid_t pid = fork();
if(pid < 0) {
fail("Failed to fork", PLACE);
}
else if(pid > 0) { //main thread
//act as client to server, this code might call exit(EXIT_FAILURE)
exit(EXIT_SUCCESS);
}
//child thread
//run server
int retval; //return value from child process
wait(&retval);
return WEXITSTATUS(retval) == EXIT_SUCCESS;
}
bool test_send_one() {
pid_t pid = fork();
if(pid < 0) {
fail("Failed to fork", PLACE);
}
else if(pid > 0) { //main thread
//act as client to server, this code might call exit(EXIT_FAILURE)
cout <<"exit success" <<endl;
exit(EXIT_SUCCESS);
}
//child thread
//run server
int retval; //return value from child process
wait(&retval);
return WEXITSTATUS(retval) == EXIT_SUCCESS;
}
int main(int argc, char** argv) {
test_setup();
test_send_one();
}
答案 0 :(得分:0)
我交换了if(pid&gt; 0)和if(pid == 0)。