100 lines
2.8 KiB
C++
100 lines
2.8 KiB
C++
/* Copyright 2019 The TensorFlow Authors. All Rights Reserved.
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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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==============================================================================*/
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#include "tensorflow/lite/kernels/cpu_backend_threadpool.h"
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#include <vector>
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#include <gtest/gtest.h>
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#include "tensorflow/lite/kernels/cpu_backend_context.h"
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namespace tflite {
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namespace {
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class TestGenerateArrayOfIncrementingIntsTask
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: public cpu_backend_threadpool::Task {
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public:
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TestGenerateArrayOfIncrementingIntsTask(int* buffer, int start, int end)
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: buffer_(buffer), start_(start), end_(end) {}
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void Run() override {
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for (int i = start_; i < end_; i++) {
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buffer_[i] = i;
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}
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}
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private:
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int* buffer_;
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int start_;
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int end_;
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};
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void TestGenerateArrayOfIncrementingInts(int num_threads, int size) {
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// The buffer that our threads will write to.
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std::vector<int> buffer(size);
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// The tasks that our threads will run.
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std::vector<TestGenerateArrayOfIncrementingIntsTask> tasks;
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// Create task objects.
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int rough_size_per_thread = size / num_threads;
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int start = 0;
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for (int thread = 0; thread < num_threads; thread++) {
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int end = start + rough_size_per_thread;
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if (thread == num_threads - 1) {
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end = size;
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}
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tasks.emplace_back(buffer.data(), start, end);
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start = end;
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}
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ASSERT_EQ(num_threads, tasks.size());
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CpuBackendContext context;
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// This SetMaxNumThreads is only to satisfy an assertion in Execute.
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// What actually determines the number of threads used is the parameter
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// passed to Execute, since Execute does 1:1 mapping of tasks to threads.
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context.SetMaxNumThreads(num_threads);
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// Execute tasks on the threadpool.
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cpu_backend_threadpool::Execute(tasks.size(), tasks.data(), &context);
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// Check contents of the generated buffer.
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for (int i = 0; i < size; i++) {
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ASSERT_EQ(buffer[i], i);
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}
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}
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TEST(CpuBackendThreadpoolTest, OneThreadSize100) {
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TestGenerateArrayOfIncrementingInts(1, 100);
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}
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TEST(CpuBackendThreadpoolTest, ThreeThreadsSize1000000) {
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TestGenerateArrayOfIncrementingInts(3, 1000000);
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}
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TEST(CpuBackendThreadpoolTest, TenThreadsSize1234567) {
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TestGenerateArrayOfIncrementingInts(10, 1234567);
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}
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} // namespace
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} // namespace tflite
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int main(int argc, char** argv) {
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::testing::InitGoogleTest(&argc, argv);
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return RUN_ALL_TESTS();
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}
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