/* * Copyright (c) 2005 Massachusetts Institute of Technology * * Permission is hereby granted, free of charge, to any person * obtaining a copy of this software and associated documentation * files (the "Software"), to deal in the Software without * restriction, including without limitation the rights to use, copy, * modify, merge, publish, distribute, sublicense, and/or sell copies * of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be * included in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ /* $Id$ */ #include<khmapp.h> #include<iphlpapi.h> static HANDLE evt_terminate = NULL; static HANDLE h_thread = NULL; DWORD WINAPI addr_change_thread(LPVOID dummy) { HANDLE h_waits[2]; HANDLE h_notify; OVERLAPPED overlap; DWORD ret; PDESCTHREAD(L"Address change waiter", L"App"); ZeroMemory(&overlap, sizeof(overlap)); h_notify = NULL; overlap.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL); do { ret = NotifyAddrChange(&h_notify, &overlap); if (ret != ERROR_IO_PENDING) { goto _end_thread; /* some error */ } h_waits[0] = overlap.hEvent; h_waits[1] = evt_terminate; ret = WaitForMultipleObjects(2, h_waits, FALSE, INFINITE); if ( ret == WAIT_OBJECT_0 ) { Sleep(3000); /* wait for things to settle down */ kmq_post_message(KMSG_CRED, KMSG_CRED_ADDR_CHANGE, 0, 0); } else { goto _end_thread; } } while(TRUE); _end_thread: ExitThread(0); } void khm_addr_change_notifier_init(void) { evt_terminate = CreateEvent(NULL, FALSE, FALSE, NULL); h_thread = CreateThread(NULL, 64 * 4096, addr_change_thread, NULL, 0, NULL); } void khm_addr_change_notifier_exit(void) { if (h_thread && evt_terminate) { SetEvent(evt_terminate); WaitForSingleObject(h_thread, INFINITE); CloseHandle(h_thread); CloseHandle(evt_terminate); } }