libuv-svace-build
575 строк · 15.4 Кб
1/* Copyright Joyent, Inc. and other Node contributors. All rights reserved.2*3* Permission is hereby granted, free of charge, to any person obtaining a copy4* of this software and associated documentation files (the "Software"), to5* deal in the Software without restriction, including without limitation the6* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or7* sell copies of the Software, and to permit persons to whom the Software is8* furnished to do so, subject to the following conditions:9*10* The above copyright notice and this permission notice shall be included in11* all copies or substantial portions of the Software.12*13* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR14* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,15* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE16* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER17* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING18* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS19* IN THE SOFTWARE.20*/21/* Whether there are any non-IFS LSPs stacked on TCP */30int uv_tcp_non_ifs_lsp_ipv4;31int uv_tcp_non_ifs_lsp_ipv6;32/* Ip address used to bind to any port at any interface */34struct sockaddr_in uv_addr_ip4_any_;35struct sockaddr_in6 uv_addr_ip6_any_;36/*39* Retrieves the pointer to a winsock extension function.40*/41static BOOL uv__get_extension_function(SOCKET socket, GUID guid,42void **target) {43int result;44DWORD bytes;45}63}69}75}135* code. */245return (DWORD) (status & 0xffff);246} else {247/* The default fallback for unmappable ntstatus codes. */248return WSAEINVAL;249}250}251}252/*255* This function provides a workaround for a bug in the winsock implementation256* of WSARecv. The problem is that when SetFileCompletionNotificationModes is257* used to avoid IOCP notifications of completed reads, WSARecv does not258* reliably indicate whether we can expect a completion package to be posted259* when the receive buffer is smaller than the received datagram.260*261* However it is desirable to use SetFileCompletionNotificationModes because262* it yields a massive performance increase.263*264* This function provides a workaround for that bug, but it only works for the265* specific case that we need it for. E.g. it assumes that the "avoid iocp"266* bit has been set, and supports only overlapped operation. It also requires267* the user to use the default msafd driver, doesn't work when other LSPs are268* stacked on top of it.269*/270int WSAAPI uv__wsarecv_workaround(SOCKET socket, WSABUF* buffers,271DWORD buffer_count, DWORD* bytes, DWORD* flags, WSAOVERLAPPED *overlapped,272LPWSAOVERLAPPED_COMPLETION_ROUTINE completion_routine) {273NTSTATUS status;274void* apc_context;275IO_STATUS_BLOCK* iosb = (IO_STATUS_BLOCK*) &overlapped->Internal;276AFD_RECV_INFO info;277DWORD error;278}361/* See description of uv__wsarecv_workaround. */364int WSAAPI uv__wsarecvfrom_workaround(SOCKET socket, WSABUF* buffers,365DWORD buffer_count, DWORD* bytes, DWORD* flags, struct sockaddr* addr,366int* addr_len, WSAOVERLAPPED *overlapped,367LPWSAOVERLAPPED_COMPLETION_ROUTINE completion_routine) {368NTSTATUS status;369void* apc_context;370IO_STATUS_BLOCK* iosb = (IO_STATUS_BLOCK*) &overlapped->Internal;371AFD_RECV_DATAGRAM_INFO info;372DWORD error;373}459* and then grab the real status from the io status block. */508if (status == STATUS_PENDING) {509DWORD r = WaitForSingleObject(event, INFINITE);510}546}576