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81 lines
2.3 KiB
81 lines
2.3 KiB
/* Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License. */
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#include "paddle/framework/channel.h"
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#include <chrono>
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#include <thread>
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#include "gtest/gtest.h"
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using paddle::framework::Channel;
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using paddle::framework::MakeChannel;
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using paddle::framework::CloseChannel;
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TEST(Channel, MakeAndClose) {
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using paddle::framework::details::Buffered;
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using paddle::framework::details::UnBuffered;
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{
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// MakeChannel should return a buffered channel is buffer_size > 0.
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auto ch = MakeChannel<int>(10);
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EXPECT_NE(dynamic_cast<Buffered<int>*>(ch), nullptr);
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EXPECT_EQ(dynamic_cast<UnBuffered<int>*>(ch), nullptr);
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CloseChannel(ch);
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delete ch;
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}
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{
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// MakeChannel should return an un-buffered channel is buffer_size = 0.
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auto ch = MakeChannel<int>(0);
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EXPECT_EQ(dynamic_cast<Buffered<int>*>(ch), nullptr);
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EXPECT_NE(dynamic_cast<UnBuffered<int>*>(ch), nullptr);
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CloseChannel(ch);
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delete ch;
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}
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}
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TEST(Channel, SufficientBufferSizeDoesntBlock) {
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const size_t buffer_size = 10;
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auto ch = MakeChannel<size_t>(buffer_size);
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for (size_t i = 0; i < buffer_size; ++i) {
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ch->Send(&i); // should not block
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}
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size_t out;
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for (size_t i = 0; i < buffer_size; ++i) {
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ch->Receive(&out); // should not block
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EXPECT_EQ(out, i);
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}
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CloseChannel(ch);
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delete ch;
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}
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TEST(Channel, ConcurrentSendNonConcurrentReceiveWithSufficientBufferSize) {
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const size_t buffer_size = 10;
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auto ch = MakeChannel<size_t>(buffer_size);
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size_t sum = 0;
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std::thread t([&]() {
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// Try to write more than buffer size.
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for (size_t i = 0; i < 2 * buffer_size; ++i) {
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ch->Send(&i); // should not block
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sum += i;
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}
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});
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std::this_thread::sleep_for(std::chrono::milliseconds(100)); // wait 0.5 sec
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EXPECT_EQ(sum, 45U);
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CloseChannel(ch);
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t.join();
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delete ch;
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}
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