summaryrefslogtreecommitdiff
path: root/xpcom/tests/gtest/TestThreads.cpp
blob: a8d6d5e188f89a4967ec97496e9e74bea43fa4a3 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "nsThreadUtils.h"
#include <stdio.h>
#include <stdlib.h>
#include "nspr.h"
#include "nsCOMPtr.h"
#include "nsIServiceManager.h"
#include "nsXPCOM.h"
#include "mozilla/Monitor.h"
#include "gtest/gtest.h"

class nsRunner final : public nsIRunnable {
  ~nsRunner() {}
public:
    NS_DECL_THREADSAFE_ISUPPORTS

    NS_IMETHOD Run() override {
        nsCOMPtr<nsIThread> thread;
        nsresult rv = NS_GetCurrentThread(getter_AddRefs(thread));
        EXPECT_TRUE(NS_SUCCEEDED(rv));
        printf("running %d on thread %p\n", mNum, (void *)thread.get());

        // if we don't do something slow, we'll never see the other
        // worker threads run
        PR_Sleep(PR_MillisecondsToInterval(100));

        return rv;
    }

    explicit nsRunner(int num) : mNum(num) {
    }

protected:
    int mNum;
};

NS_IMPL_ISUPPORTS(nsRunner, nsIRunnable)

TEST(Threads, Main)
{
    nsresult rv;

    nsCOMPtr<nsIRunnable> event = new nsRunner(0);
    EXPECT_TRUE(event);

    nsCOMPtr<nsIThread> runner;
    rv = NS_NewThread(getter_AddRefs(runner), event);
    EXPECT_TRUE(NS_SUCCEEDED(rv));

    nsCOMPtr<nsIThread> thread;
    rv = NS_GetCurrentThread(getter_AddRefs(thread));
    EXPECT_TRUE(NS_SUCCEEDED(rv));

    rv = runner->Shutdown();     // wait for the runner to die before quitting
    EXPECT_TRUE(NS_SUCCEEDED(rv));

    PR_Sleep(PR_MillisecondsToInterval(100));       // hopefully the runner will quit here
}

class nsStressRunner final : public nsIRunnable {
public:
    NS_DECL_THREADSAFE_ISUPPORTS

    NS_IMETHOD Run() override {
        EXPECT_FALSE(mWasRun);
        mWasRun = true;
        PR_Sleep(1);
        if (!PR_AtomicDecrement(&gNum)) {
            printf("   last thread was %d\n", mNum);
        }
        return NS_OK;
    }

    explicit nsStressRunner(int num) : mNum(num), mWasRun(false) {
        PR_AtomicIncrement(&gNum);
    }

    static int32_t GetGlobalCount() {return gNum;}

private:
    ~nsStressRunner() {
        EXPECT_TRUE(mWasRun);
    }

protected:
    static int32_t gNum;
    int32_t mNum;
    bool mWasRun;
};

int32_t nsStressRunner::gNum = 0;

NS_IMPL_ISUPPORTS(nsStressRunner, nsIRunnable)

TEST(Threads, Stress)
{
    const int loops = 1000;
    const int threads = 50;

    for (int i = 0; i < loops; i++) {
        printf("Loop %d of %d\n", i+1, loops);

        int k;
        nsIThread** array = new nsIThread*[threads];

        EXPECT_EQ(nsStressRunner::GetGlobalCount(), 0);

        for (k = 0; k < threads; k++) {
            nsCOMPtr<nsIThread> t;
            nsresult rv = NS_NewThread(getter_AddRefs(t), new nsStressRunner(k));
            EXPECT_TRUE(NS_SUCCEEDED(rv));
            NS_ADDREF(array[k] = t);
        }

        for (k = threads-1; k >= 0; k--) {
            array[k]->Shutdown();
            NS_RELEASE(array[k]);    
        }
        delete [] array;
    }
}

mozilla::Monitor* gAsyncShutdownReadyMonitor;
mozilla::Monitor* gBeginAsyncShutdownMonitor;

class AsyncShutdownPreparer : public nsIRunnable {
public:
    NS_DECL_THREADSAFE_ISUPPORTS

    NS_IMETHOD Run() override {
        EXPECT_FALSE(mWasRun);
        mWasRun = true;

        mozilla::MonitorAutoLock lock(*gAsyncShutdownReadyMonitor);
        lock.Notify();

        return NS_OK;
    }

    explicit AsyncShutdownPreparer() : mWasRun(false) {}

private:
    virtual ~AsyncShutdownPreparer() {
        EXPECT_TRUE(mWasRun);
    }

protected:
    bool mWasRun;
};

NS_IMPL_ISUPPORTS(AsyncShutdownPreparer, nsIRunnable)

class AsyncShutdownWaiter : public nsIRunnable {
public:
    NS_DECL_THREADSAFE_ISUPPORTS

    NS_IMETHOD Run() override {
        EXPECT_FALSE(mWasRun);
        mWasRun = true;

        nsCOMPtr<nsIThread> t;
        nsresult rv;

        {
          mozilla::MonitorAutoLock lock(*gBeginAsyncShutdownMonitor);

          rv = NS_NewThread(getter_AddRefs(t), new AsyncShutdownPreparer());
          EXPECT_TRUE(NS_SUCCEEDED(rv));

          lock.Wait();
        }

        rv = t->AsyncShutdown();
        EXPECT_TRUE(NS_SUCCEEDED(rv));

        return NS_OK;
    }

    explicit AsyncShutdownWaiter() : mWasRun(false) {}

private:
    virtual ~AsyncShutdownWaiter() {
        EXPECT_TRUE(mWasRun);
    }

protected:
    bool mWasRun;
};

NS_IMPL_ISUPPORTS(AsyncShutdownWaiter, nsIRunnable)

class SameThreadSentinel : public nsIRunnable {
public:
    NS_DECL_ISUPPORTS

    NS_IMETHOD Run() override {
        mozilla::MonitorAutoLock lock(*gBeginAsyncShutdownMonitor);
        lock.Notify();
        return NS_OK;
    }

private:
    virtual ~SameThreadSentinel() {}
};

NS_IMPL_ISUPPORTS(SameThreadSentinel, nsIRunnable)

TEST(Threads, AsyncShutdown)
{
  gAsyncShutdownReadyMonitor = new mozilla::Monitor("gAsyncShutdownReady");
  gBeginAsyncShutdownMonitor = new mozilla::Monitor("gBeginAsyncShutdown");

  nsCOMPtr<nsIThread> t;
  nsresult rv;

  {
    mozilla::MonitorAutoLock lock(*gAsyncShutdownReadyMonitor);

    rv = NS_NewThread(getter_AddRefs(t), new AsyncShutdownWaiter());
    EXPECT_TRUE(NS_SUCCEEDED(rv));

    lock.Wait();
  }

  NS_DispatchToCurrentThread(new SameThreadSentinel());
  rv = t->Shutdown();
  EXPECT_TRUE(NS_SUCCEEDED(rv));

  delete gAsyncShutdownReadyMonitor;
  delete gBeginAsyncShutdownMonitor;
}

static void threadProc(void *arg)
{
    // printf("   running thread %d\n", (int) arg);
    PR_Sleep(1);
    EXPECT_EQ(PR_JOINABLE_THREAD, PR_GetThreadState(PR_GetCurrentThread()));
}

TEST(Threads, StressNSPR)
{
    const int loops = 1000;
    const int threads = 50;

    for (int i = 0; i < loops; i++) {
        printf("Loop %d of %d\n", i+1, loops);

        intptr_t k;
        PRThread** array = new PRThread*[threads];

        for (k = 0; k < threads; k++) {
            array[k] = PR_CreateThread(PR_USER_THREAD,
                                       threadProc, (void*) k,
                                       PR_PRIORITY_NORMAL,
                                       PR_GLOBAL_THREAD,
                                       PR_JOINABLE_THREAD,
                                       0);
            EXPECT_TRUE(array[k]);
        }

        for (k = 0; k < threads; k++) {
            EXPECT_EQ(PR_JOINABLE_THREAD, PR_GetThreadState(array[k]));
        }

        for (k = threads-1; k >= 0; k--) {
            PR_JoinThread(array[k]);
        }
        delete [] array;
    }
}