Dol*_*hin 5 unix operating-system
kill -s SIGCHLD
以上是杀死任何僵尸进程的代码,但我的问题是:
Zombie进程是否有任何表现方式?
steenhulthin是正确的,但直到它被移动,有人可能会在这里回答它.在子进程终止的时间和父进程调用其中一个wait()
函数以获得其退出状态的时间之间存在僵尸进程.
一个简单的例子:
/* Simple example that creates a zombie process. */
#include <stdio.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/wait.h>
int main(void)
{
pid_t cpid;
char s[4];
int status;
cpid = fork();
if (cpid == -1) {
puts("Whoops, no child process, bye.");
return 1;
}
if (cpid == 0) {
puts("Child process says 'goodbye cruel world.'");
return 0;
}
puts("Parent process now cruelly lets its child exist as\n"
"a zombie until the user presses enter.\n"
"Run 'ps aux | grep mkzombie' in another window to\n"
"see the zombie.");
fgets(s, sizeof(s), stdin);
wait(&status);
return 0;
}
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