1 /*
2 * Copyright (C) 2016 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include <gtest/gtest.h>
18
19 #include <condition_variable>
20 #include <mutex>
21 #include <thread>
22
23 #include "adb_io.h"
24 #include "adb_unique_fd.h"
25 #include "socket.h"
26 #include "sysdeps.h"
27 #include "sysdeps/chrono.h"
28
WaitForFdeventLoop()29 static void WaitForFdeventLoop() {
30 // Sleep for a bit to make sure that network events have propagated.
31 std::this_thread::sleep_for(100ms);
32
33 // fdevent_run_on_main_thread has a guaranteed ordering, and is guaranteed to happen after
34 // socket events, so as soon as our function is called, we know that we've processed all
35 // previous events.
36 std::mutex mutex;
37 std::condition_variable cv;
38 std::unique_lock<std::mutex> lock(mutex);
39 fdevent_run_on_main_thread([&]() {
40 mutex.lock();
41 mutex.unlock();
42 cv.notify_one();
43 });
44 cv.wait(lock);
45 }
46
47 class FdeventTest : public ::testing::Test {
48 protected:
49 unique_fd dummy;
50
~FdeventTest()51 ~FdeventTest() {
52 if (thread_.joinable()) {
53 TerminateThread();
54 }
55 }
56
SetUpTestCase()57 static void SetUpTestCase() {
58 #if !defined(_WIN32)
59 ASSERT_NE(SIG_ERR, signal(SIGPIPE, SIG_IGN));
60 #endif
61 }
62
SetUp()63 void SetUp() override {
64 fdevent_reset();
65 ASSERT_EQ(0u, fdevent_installed_count());
66 }
67
68 // Register a dummy socket used to wake up the fdevent loop to tell it to die.
PrepareThread()69 void PrepareThread() {
70 int dummy_fds[2];
71 if (adb_socketpair(dummy_fds) != 0) {
72 FAIL() << "failed to create socketpair: " << strerror(errno);
73 }
74
75 asocket* dummy_socket = create_local_socket(unique_fd(dummy_fds[1]));
76 if (!dummy_socket) {
77 FAIL() << "failed to create local socket: " << strerror(errno);
78 }
79 dummy_socket->ready(dummy_socket);
80 dummy.reset(dummy_fds[0]);
81
82 thread_ = std::thread([]() { fdevent_loop(); });
83 WaitForFdeventLoop();
84 }
85
GetAdditionalLocalSocketCount()86 size_t GetAdditionalLocalSocketCount() {
87 // dummy socket installed in PrepareThread()
88 return 1;
89 }
90
TerminateThread()91 void TerminateThread() {
92 fdevent_terminate_loop();
93 ASSERT_TRUE(WriteFdExactly(dummy, "", 1));
94 thread_.join();
95 dummy.reset();
96 }
97
98 std::thread thread_;
99 };
100