Apache httpd源代码中的函数ap_run_pre_connection在哪里？

Question

我正在阅读Apache2.2的源代码，我发现当我使用prefork模块时，它会调用ap_process_connection来处理连接，并在此方法中调用{{1} }。
说到这里，我找不到ap_run_pre_connection和ap_run_pre_connection（我找到一个名为AP_DECLARE_HOOK的宏，它将pre_connection和ap链接到名称{{1}之前}）。
我在哪里可以找到下一步？

Answer 1

您可以通过查找ap_hook_pre_connection找到参与此挂钩的模块。

AP_IMPLEMENT_HOOK_RUN_ALL（int，pre_connection，（conn_rec * c，void * csd），（c，csd），OK，DECLINED）

AP_IMPLEMENT_HOOK_RUN_ALL表示将运行多个调用ap_hook_pre_connection（）的模块，直到返回错误

/**
 * Implement an Apache core hook that runs until one of the functions
 * returns something other than ok or decline. That return value is
 * then returned from the hook runner. If the hooks run to completion,
 * then ok is returned. Note that if no hook runs it would probably be
 * more correct to return decline, but this currently does not do
 * so. The implementation is called ap_run_<i>name</i>.

ap_run_pre_connection的实际impl只是一个循环注册函数链表的宏。见apr_hooks.h