4b9e834029db70f0592935e741a6c2c63cdd2b25
[WebKit-https.git] / Tools / TestWebKitAPI / Tests / WTF / Signals.cpp
1 /*
2  * Copyright (C) 2017 Apple Inc. All rights reserved.
3  *
4  * Redistribution and use in source and binary forms, with or without
5  * modification, are permitted provided that the following conditions
6  * are met:
7  * 1. Redistributions of source code must retain the above copyright
8  *    notice, this list of conditions and the following disclaimer.
9  * 2. Redistributions in binary form must reproduce the above copyright
10  *    notice, this list of conditions and the following disclaimer in the
11  *    documentation and/or other materials provided with the distribution.
12  *
13  * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
14  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
15  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
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20  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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22  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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24  */
25
26 #include "config.h"
27
28 #include <type_traits>
29 #include <wtf/DataLog.h>
30 #include <wtf/Threading.h>
31 #include <wtf/threads/Signals.h>
32
33 class ReflectedThread : public Thread {
34 public:
35     using Thread::m_mutex;
36     using Thread::m_handle;
37     using Thread::hasExited;
38 };
39
40 TEST(Signals, SignalsWorkOnExit)
41 {
42     static bool handlerRan = false;
43     installSignalHandler(Signal::Usr, [] (Signal, SigInfo&, PlatformRegisters&) -> SignalAction {
44         dataLogLn("here");
45         handlerRan = true;
46         return SignalAction::Handled;
47     });
48
49     Atomic<bool> receiverShouldKeepRunning(true);
50     Ref<Thread> receiverThread = (Thread::create("ThreadMessage receiver",
51         [&receiverShouldKeepRunning] () {
52             while (receiverShouldKeepRunning.load()) { }
53     }));
54
55     bool signalFired;
56     {
57         std::unique_lock<std::mutex> locker(static_cast<ReflectedThread&>(receiverThread.get()).m_mutex);
58         receiverShouldKeepRunning.store(false);
59         EXPECT_FALSE(static_cast<ReflectedThread&>(receiverThread.get()).hasExited());
60         sleep(1_s);
61         signalFired = !pthread_kill(static_cast<ReflectedThread&>(receiverThread.get()).m_handle, std::get<0>(toSystemSignal(Signal::Usr)));
62     }
63
64     receiverThread->waitForCompletion();
65     EXPECT_TRUE(handlerRan || !signalFired);
66 }