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_exit和exit的区别? (无内容)
#include <sys/types.h>;
#include "ourhdr.h"
int glob = 6; /* external variable in initialized data */
int
main(void)
{
int var; /* automatic variable on the stack */
pid_t pid;
var = 88;
printf("before vfork\n" /* we don't flush stdio */
if ( (pid = vfork()) < 0)
printf("vfork error\n"
else if (pid == 0) { /* child */
glob++; /* modify parent's variables */
var++;
exit(0); /* child terminates */
}
/* parent */
printf("pid = %d, glob = %d, var = %d\n", getpid(), glob, var);
exit(0);
}
我在linux6.2的机器上试了一下,还是有printf的内容输出:pid = 29650, glob = 7, var = 89
请dx解惑,谢谢 |
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