henrike@webrtc.org | 0e118e7 | 2013-07-10 00:45:36 +0000 | [diff] [blame] | 1 | /* |
| 2 | * libjingle |
| 3 | * Copyright 2011, Google Inc. |
| 4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that the following conditions are met: |
| 7 | * |
| 8 | * 1. Redistributions of source code must retain the above copyright notice, |
| 9 | * this list of conditions and the following disclaimer. |
| 10 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
| 11 | * this list of conditions and the following disclaimer in the documentation |
| 12 | * and/or other materials provided with the distribution. |
| 13 | * 3. The name of the author may not be used to endorse or promote products |
| 14 | * derived from this software without specific prior written permission. |
| 15 | * |
| 16 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
| 17 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| 18 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
| 19 | * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 20 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| 21 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
| 22 | * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
| 23 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR |
| 24 | * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF |
| 25 | * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 26 | */ |
| 27 | |
| 28 | #include "talk/base/common.h" |
| 29 | #include "talk/base/gunit.h" |
| 30 | #include "talk/base/messagehandler.h" |
| 31 | #include "talk/base/messagequeue.h" |
| 32 | #include "talk/base/scoped_ptr.h" |
| 33 | #include "talk/base/sharedexclusivelock.h" |
| 34 | #include "talk/base/thread.h" |
| 35 | #include "talk/base/timeutils.h" |
| 36 | |
| 37 | namespace talk_base { |
| 38 | |
| 39 | static const uint32 kMsgRead = 0; |
| 40 | static const uint32 kMsgWrite = 0; |
| 41 | static const int kNoWaitThresholdInMs = 10; |
| 42 | static const int kWaitThresholdInMs = 80; |
| 43 | static const int kProcessTimeInMs = 100; |
| 44 | static const int kProcessTimeoutInMs = 5000; |
| 45 | |
| 46 | class SharedExclusiveTask : public MessageHandler { |
| 47 | public: |
| 48 | SharedExclusiveTask(SharedExclusiveLock* shared_exclusive_lock, |
| 49 | int* value, |
| 50 | bool* done) |
| 51 | : shared_exclusive_lock_(shared_exclusive_lock), |
| 52 | waiting_time_in_ms_(0), |
| 53 | value_(value), |
| 54 | done_(done) { |
| 55 | worker_thread_.reset(new Thread()); |
| 56 | worker_thread_->Start(); |
| 57 | } |
| 58 | |
| 59 | int waiting_time_in_ms() const { return waiting_time_in_ms_; } |
| 60 | |
| 61 | protected: |
| 62 | scoped_ptr<Thread> worker_thread_; |
| 63 | SharedExclusiveLock* shared_exclusive_lock_; |
| 64 | int waiting_time_in_ms_; |
| 65 | int* value_; |
| 66 | bool* done_; |
| 67 | }; |
| 68 | |
| 69 | class ReadTask : public SharedExclusiveTask { |
| 70 | public: |
| 71 | ReadTask(SharedExclusiveLock* shared_exclusive_lock, int* value, bool* done) |
| 72 | : SharedExclusiveTask(shared_exclusive_lock, value, done) { |
| 73 | } |
| 74 | |
| 75 | void PostRead(int* value) { |
| 76 | worker_thread_->Post(this, kMsgRead, new TypedMessageData<int*>(value)); |
| 77 | } |
| 78 | |
| 79 | private: |
| 80 | virtual void OnMessage(Message* message) { |
| 81 | ASSERT(talk_base::Thread::Current() == worker_thread_.get()); |
| 82 | ASSERT(message != NULL); |
| 83 | ASSERT(message->message_id == kMsgRead); |
| 84 | |
| 85 | TypedMessageData<int*>* message_data = |
| 86 | static_cast<TypedMessageData<int*>*>(message->pdata); |
| 87 | |
| 88 | uint32 start_time = Time(); |
| 89 | { |
| 90 | SharedScope ss(shared_exclusive_lock_); |
| 91 | waiting_time_in_ms_ = TimeDiff(Time(), start_time); |
| 92 | |
| 93 | Thread::SleepMs(kProcessTimeInMs); |
| 94 | *message_data->data() = *value_; |
| 95 | *done_ = true; |
| 96 | } |
| 97 | delete message->pdata; |
| 98 | message->pdata = NULL; |
| 99 | } |
| 100 | }; |
| 101 | |
| 102 | class WriteTask : public SharedExclusiveTask { |
| 103 | public: |
| 104 | WriteTask(SharedExclusiveLock* shared_exclusive_lock, int* value, bool* done) |
| 105 | : SharedExclusiveTask(shared_exclusive_lock, value, done) { |
| 106 | } |
| 107 | |
| 108 | void PostWrite(int value) { |
| 109 | worker_thread_->Post(this, kMsgWrite, new TypedMessageData<int>(value)); |
| 110 | } |
| 111 | |
| 112 | private: |
| 113 | virtual void OnMessage(Message* message) { |
| 114 | ASSERT(talk_base::Thread::Current() == worker_thread_.get()); |
| 115 | ASSERT(message != NULL); |
| 116 | ASSERT(message->message_id == kMsgWrite); |
| 117 | |
| 118 | TypedMessageData<int>* message_data = |
| 119 | static_cast<TypedMessageData<int>*>(message->pdata); |
| 120 | |
| 121 | uint32 start_time = Time(); |
| 122 | { |
| 123 | ExclusiveScope es(shared_exclusive_lock_); |
| 124 | waiting_time_in_ms_ = TimeDiff(Time(), start_time); |
| 125 | |
| 126 | Thread::SleepMs(kProcessTimeInMs); |
| 127 | *value_ = message_data->data(); |
| 128 | *done_ = true; |
| 129 | } |
| 130 | delete message->pdata; |
| 131 | message->pdata = NULL; |
| 132 | } |
| 133 | }; |
| 134 | |
| 135 | // Unit test for SharedExclusiveLock. |
| 136 | class SharedExclusiveLockTest |
| 137 | : public testing::Test { |
| 138 | public: |
| 139 | SharedExclusiveLockTest() : value_(0) { |
| 140 | } |
| 141 | |
| 142 | virtual void SetUp() { |
| 143 | shared_exclusive_lock_.reset(new SharedExclusiveLock()); |
| 144 | } |
| 145 | |
| 146 | protected: |
| 147 | scoped_ptr<SharedExclusiveLock> shared_exclusive_lock_; |
| 148 | int value_; |
| 149 | }; |
| 150 | |
phoglund@webrtc.org | 95ed196 | 2014-05-27 08:08:00 +0000 | [diff] [blame] | 151 | // Flaky: https://code.google.com/p/webrtc/issues/detail?id=3318 |
| 152 | TEST_F(SharedExclusiveLockTest, DISABLED_TestSharedShared) { |
henrike@webrtc.org | 0e118e7 | 2013-07-10 00:45:36 +0000 | [diff] [blame] | 153 | int value0, value1; |
| 154 | bool done0, done1; |
| 155 | ReadTask reader0(shared_exclusive_lock_.get(), &value_, &done0); |
| 156 | ReadTask reader1(shared_exclusive_lock_.get(), &value_, &done1); |
| 157 | |
| 158 | // Test shared locks can be shared without waiting. |
| 159 | { |
| 160 | SharedScope ss(shared_exclusive_lock_.get()); |
| 161 | value_ = 1; |
| 162 | done0 = false; |
| 163 | done1 = false; |
| 164 | reader0.PostRead(&value0); |
| 165 | reader1.PostRead(&value1); |
| 166 | Thread::SleepMs(kProcessTimeInMs); |
| 167 | } |
| 168 | |
| 169 | EXPECT_TRUE_WAIT(done0, kProcessTimeoutInMs); |
| 170 | EXPECT_EQ(1, value0); |
| 171 | EXPECT_LE(reader0.waiting_time_in_ms(), kNoWaitThresholdInMs); |
| 172 | EXPECT_TRUE_WAIT(done1, kProcessTimeoutInMs); |
| 173 | EXPECT_EQ(1, value1); |
| 174 | EXPECT_LE(reader1.waiting_time_in_ms(), kNoWaitThresholdInMs); |
| 175 | } |
| 176 | |
| 177 | TEST_F(SharedExclusiveLockTest, TestSharedExclusive) { |
| 178 | bool done; |
| 179 | WriteTask writer(shared_exclusive_lock_.get(), &value_, &done); |
| 180 | |
| 181 | // Test exclusive lock needs to wait for shared lock. |
| 182 | { |
| 183 | SharedScope ss(shared_exclusive_lock_.get()); |
| 184 | value_ = 1; |
| 185 | done = false; |
| 186 | writer.PostWrite(2); |
| 187 | Thread::SleepMs(kProcessTimeInMs); |
| 188 | EXPECT_EQ(1, value_); |
| 189 | } |
| 190 | |
| 191 | EXPECT_TRUE_WAIT(done, kProcessTimeoutInMs); |
| 192 | EXPECT_EQ(2, value_); |
| 193 | EXPECT_GE(writer.waiting_time_in_ms(), kWaitThresholdInMs); |
| 194 | } |
| 195 | |
| 196 | TEST_F(SharedExclusiveLockTest, TestExclusiveShared) { |
| 197 | int value; |
| 198 | bool done; |
| 199 | ReadTask reader(shared_exclusive_lock_.get(), &value_, &done); |
| 200 | |
| 201 | // Test shared lock needs to wait for exclusive lock. |
| 202 | { |
| 203 | ExclusiveScope es(shared_exclusive_lock_.get()); |
| 204 | value_ = 1; |
| 205 | done = false; |
| 206 | reader.PostRead(&value); |
| 207 | Thread::SleepMs(kProcessTimeInMs); |
| 208 | value_ = 2; |
| 209 | } |
| 210 | |
| 211 | EXPECT_TRUE_WAIT(done, kProcessTimeoutInMs); |
| 212 | EXPECT_EQ(2, value); |
| 213 | EXPECT_GE(reader.waiting_time_in_ms(), kWaitThresholdInMs); |
| 214 | } |
| 215 | |
| 216 | TEST_F(SharedExclusiveLockTest, TestExclusiveExclusive) { |
| 217 | bool done; |
| 218 | WriteTask writer(shared_exclusive_lock_.get(), &value_, &done); |
| 219 | |
| 220 | // Test exclusive lock needs to wait for exclusive lock. |
| 221 | { |
| 222 | ExclusiveScope es(shared_exclusive_lock_.get()); |
| 223 | value_ = 1; |
| 224 | done = false; |
| 225 | writer.PostWrite(2); |
| 226 | Thread::SleepMs(kProcessTimeInMs); |
| 227 | EXPECT_EQ(1, value_); |
| 228 | } |
| 229 | |
| 230 | EXPECT_TRUE_WAIT(done, kProcessTimeoutInMs); |
| 231 | EXPECT_EQ(2, value_); |
| 232 | EXPECT_GE(writer.waiting_time_in_ms(), kWaitThresholdInMs); |
| 233 | } |
| 234 | |
| 235 | } // namespace talk_base |