1 // Copyright (c) 2016 Sandstorm Development Group, Inc. and contributors
2 // Licensed under the MIT License:
3 //
4 // Permission is hereby granted, free of charge, to any person obtaining a copy
5 // of this software and associated documentation files (the "Software"), to deal
6 // in the Software without restriction, including without limitation the rights
7 // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8 // copies of the Software, and to permit persons to whom the Software is
9 // furnished to do so, subject to the following conditions:
10 //
11 // The above copyright notice and this permission notice shall be included in
12 // all copies or substantial portions of the Software.
13 //
14 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17 // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
20 // THE SOFTWARE.
21
22 #include "thread.h"
23 #include "test.h"
24 #include <atomic>
25
26 #if _WIN32
27 #define NOGDI
28 #include <windows.h>
29 #undef NOGDI
30 #else
31 #include <unistd.h>
32 #endif
33
34 namespace kj {
35 namespace {
36
37 #if _WIN32
delay()38 inline void delay() { Sleep(10); }
39 #else
40 inline void delay() { usleep(10000); }
41 #endif
42
43 KJ_TEST("detaching thread doesn't delete function") {
44 struct Functor {
45 // Functor that sets *b = true on destruction, not counting moves.
46
47 std::atomic<bool>* destroyed;
48 const std::atomic<bool>* canExit;
49
Functorkj::__anon3045cefb0111::Functor50 Functor(std::atomic<bool>* destroyed, const std::atomic<bool>* canExit)
51 : destroyed(destroyed), canExit(canExit) {}
52
~Functorkj::__anon3045cefb0111::Functor53 ~Functor() {
54 if (destroyed != nullptr) *destroyed = true;
55 }
56 KJ_DISALLOW_COPY(Functor);
Functorkj::__anon3045cefb0111::Functor57 Functor(Functor&& other): destroyed(other.destroyed), canExit(other.canExit) {
58 other.destroyed = nullptr;
59 }
60 Functor& operator=(Functor&& other) = delete;
61
operator ()kj::__anon3045cefb0111::Functor62 void operator()() {
63 while (!*canExit) delay();
64 }
65 };
66
67 std::atomic<bool> destroyed(false);
68 std::atomic<bool> canExit(false);
69 Functor f(&destroyed, &canExit);
70
71 kj::Thread(kj::mv(f)).detach();
72
73 // detach() should not have destroyed the function.
74 KJ_ASSERT(!destroyed);
75
76 // Delay a bit to make sure the thread has had time to start up, and then make sure the function
77 // still isn't destroyed.
78 delay();
79 delay();
80 KJ_ASSERT(!destroyed);
81
82 // Notify the thread that it's safe to exit.
83 canExit = true;
84 while (!destroyed) {
85 delay();
86 }
87 }
88
89 class CapturingExceptionCallback final: public ExceptionCallback {
90 public:
CapturingExceptionCallback(String & target)91 CapturingExceptionCallback(String& target): target(target) {}
92
logMessage(LogSeverity severity,const char * file,int line,int contextDepth,String && text)93 void logMessage(LogSeverity severity, const char* file, int line, int contextDepth,
94 String&& text) {
95 target = kj::mv(text);
96 }
97
98 private:
99 String& target;
100 };
101
102 class ThreadedExceptionCallback final: public ExceptionCallback {
103 public:
getThreadInitializer()104 Function<void(Function<void()>)> getThreadInitializer() override {
105 return [this](Function<void()> func) {
106 CapturingExceptionCallback context(captured);
107 func();
108 };
109 }
110
111 String captured;
112 };
113
114 KJ_TEST("threads pick up exception callback initializer") {
115 ThreadedExceptionCallback context;
116 KJ_EXPECT(context.captured != "foobar");
__anon3045cefb0302() 117 Thread([]() {
118 KJ_LOG(ERROR, "foobar");
119 });
120 KJ_EXPECT(context.captured == "foobar", context.captured);
121 }
122
123 } // namespace
124 } // namespace kj
125