| jacamar 回复于：2002-11-05 23:32:26
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fork后就是两个进程了，就像没有关系一样
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| zhutr 回复于：2002-11-05 23:34:30
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只是子进程退出,
父进程并没有退出呀!
当然要打出来了!
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| beggar 回复于：2002-11-05 23:49:05
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vfork和fork不同
vfork在调用exec或exit之前在父进程空间中运行且保证子进程先运行,如果子进程不调用exec或exit父进程永远得不到运行.你用vfork的子进程更改了父进程空间中的的var值,所以你会看到var值为2而不是你想要的1.用fork就能看到你想要的1
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| JohnBull 回复于：2002-11-06 12:12:15
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同意.
(From XPG4 / SUSv2 / POSIX draft.) The vfork() function has the same effect as fork(), except that the behaviour is undefined if the process created by vfork() either modifies any data other than a variable of type pid_t used to store the return value from vfork(), or returns from the
function in which vfork() was called, or calls any other function before successfully calling _exit() or one of the exec family of functions.
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| aiya 回复于：2002-11-06 15:13:34
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有道理！
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