Why not hook "sleep" and "usleep"?

[zy498420]

As poll has been hooked, they can be easily implemented.

After hooked them, we can simply write period "consumer" program （offline scanner）.

因为poll已经被挂钩，所以sleep和usleep可以轻松的用poll来实现协程式的休眠。
如果 sleep和usleep被挂钩，我们可以轻松的实现周期性工作的消费者程序（在离线扫描程序中很常见）。

[hcconquer]

hook系统调用的原理谁能讲讲，以前只知道__attribute__((weak))可以改变部分系统调用函数的指向 ≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡ Best regards, Chen Han 韩琛 ≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡

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On Sun, Dec 4, 2016 at 4:26 PM, zy498420 ***@***.***> wrote: As poll has been hooked, they can be easily implemented. After hooked them, we can simply write period "consumer" program （offline scanner）. 因为poll已经被挂钩，所以sleep和usleep可以轻松的用poll来实现协程式的休眠。 如果 sleep和usleep被挂钩，我们可以轻松的实现周期性工作的消费者程序（在离线扫描程序中很常见）。 — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#11>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AA0srjPCgOE83lHdaFBcnOuObFaR7Lolks5rEnlPgaJpZM4LDh9q> .