1 /*
2 * Copyright (C) 2025 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16 #include "poll_mock.h"
17
18 #include <dlfcn.h>
19
20 namespace OHOS {
21 namespace FileManagement {
22 namespace ModuleFileIO {
23 namespace Test {
24
25 thread_local std::shared_ptr<PollMock> PollMock::pollMock = nullptr;
26 thread_local bool PollMock::mockable = false;
27
GetMock()28 std::shared_ptr<PollMock> PollMock::GetMock()
29 {
30 if (pollMock == nullptr) {
31 pollMock = std::make_shared<PollMock>();
32 }
33 return pollMock;
34 }
35
EnableMock()36 void PollMock::EnableMock()
37 {
38 mockable = true;
39 }
40
DisableMock()41 void PollMock::DisableMock()
42 {
43 pollMock = nullptr;
44 mockable = false;
45 }
46
IsMockable()47 bool PollMock::IsMockable()
48 {
49 return mockable;
50 }
51
52 } // namespace Test
53 } // namespace ModuleFileIO
54 } // namespace FileManagement
55 } // namespace OHOS
56
57 #ifdef __cplusplus
58 extern "C" {
59 using namespace OHOS::FileManagement::ModuleFileIO::Test;
60
poll(struct pollfd * fds,nfds_t n,int timeout)61 int poll(struct pollfd *fds, nfds_t n, int timeout)
62 {
63 if (PollMock::IsMockable()) {
64 return PollMock::GetMock()->poll(fds, n, timeout);
65 }
66
67 static int (*realPoll)(struct pollfd * fds, nfds_t n, int timeout) = []() {
68 auto func = (int (*)(struct pollfd *, nfds_t, int))dlsym(RTLD_NEXT, "poll");
69 if (!func) {
70 GTEST_LOG_(ERROR) << "Failed to resolve real poll: " << dlerror();
71 }
72 return func;
73 }();
74
75 if (!realPoll) {
76 return -1;
77 }
78
79 return realPoll(fds, n, timeout);
80 }
81
82 } // extern "C"
83 #endif