1
2 /**
3 * Copyright (C) 2018-present MongoDB, Inc.
4 *
5 * This program is free software: you can redistribute it and/or modify
6 * it under the terms of the Server Side Public License, version 1,
7 * as published by MongoDB, Inc.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * Server Side Public License for more details.
13 *
14 * You should have received a copy of the Server Side Public License
15 * along with this program. If not, see
16 * <http://www.mongodb.com/licensing/server-side-public-license>.
17 *
18 * As a special exception, the copyright holders give permission to link the
19 * code of portions of this program with the OpenSSL library under certain
20 * conditions as described in each individual source file and distribute
21 * linked combinations including the program with the OpenSSL library. You
22 * must comply with the Server Side Public License in all respects for
23 * all of the code used other than as permitted herein. If you modify file(s)
24 * with this exception, you may extend this exception to your version of the
25 * file(s), but you are not obligated to do so. If you do not wish to do so,
26 * delete this exception statement from your version. If you delete this
27 * exception statement from all source files in the program, then also delete
28 * it in the license file.
29 */
30
31 #include "mongo/platform/basic.h"
32
33 #include "mongo/base/init.h"
34 #include "mongo/util/assert_util.h"
35 #include "mongo/util/net/private/socket_poll.h"
36
37 namespace mongo {
38
39 #ifdef _WIN32
40
41 typedef int(WSAAPI* WSAPollFunction)(pollfd* fdarray, ULONG nfds, INT timeout);
42
43 static WSAPollFunction wsaPollFunction = NULL;
44
MONGO_INITIALIZER(DynamicLinkWin32Poll)45 MONGO_INITIALIZER(DynamicLinkWin32Poll)(InitializerContext* context) {
46 HINSTANCE wsaPollLib = LoadLibraryW(L"Ws2_32.dll");
47 if (wsaPollLib) {
48 wsaPollFunction = reinterpret_cast<WSAPollFunction>(GetProcAddress(wsaPollLib, "WSAPoll"));
49 }
50
51 return Status::OK();
52 }
53
isPollSupported()54 bool isPollSupported() {
55 return wsaPollFunction != NULL;
56 }
57
socketPoll(pollfd * fdarray,unsigned long nfds,int timeout)58 int socketPoll(pollfd* fdarray, unsigned long nfds, int timeout) {
59 fassert(17185, isPollSupported());
60 return wsaPollFunction(fdarray, nfds, timeout);
61 }
62
63 #else
64
65 bool isPollSupported() {
66 return true;
67 }
68
69 int socketPoll(pollfd* fdarray, unsigned long nfds, int timeout) {
70 return ::poll(fdarray, nfds, timeout);
71 }
72
73 #endif
74 }
75