| /* |
| * |
| * Copyright 2017 gRPC authors. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| * |
| */ |
| |
| #include "src/core/lib/debug/stats.h" |
| |
| #include <mutex> |
| #include <thread> |
| |
| #include <grpc/grpc.h> |
| #include <grpc/support/cpu.h> |
| #include <grpc/support/log.h> |
| #include <gtest/gtest.h> |
| |
| namespace grpc { |
| namespace testing { |
| |
| class Snapshot { |
| public: |
| Snapshot() { grpc_stats_collect(&begin_); } |
| |
| grpc_stats_data delta() { |
| grpc_stats_data now; |
| grpc_stats_collect(&now); |
| grpc_stats_data delta; |
| grpc_stats_diff(&now, &begin_, &delta); |
| return delta; |
| } |
| |
| private: |
| grpc_stats_data begin_; |
| }; |
| |
| TEST(StatsTest, IncCounters) { |
| for (int i = 0; i < GRPC_STATS_COUNTER_COUNT; i++) { |
| Snapshot snapshot; |
| |
| grpc_core::ExecCtx exec_ctx; |
| GRPC_STATS_INC_COUNTER((grpc_stats_counters)i); |
| |
| EXPECT_EQ(snapshot.delta().counters[i], 1); |
| } |
| } |
| |
| TEST(StatsTest, IncSpecificCounter) { |
| Snapshot snapshot; |
| |
| grpc_core::ExecCtx exec_ctx; |
| GRPC_STATS_INC_SYSCALL_POLL(); |
| |
| EXPECT_EQ(snapshot.delta().counters[GRPC_STATS_COUNTER_SYSCALL_POLL], 1); |
| } |
| |
| static int FindExpectedBucket(int i, int j) { |
| if (j < 0) { |
| return 0; |
| } |
| if (j >= grpc_stats_histo_bucket_boundaries[i][grpc_stats_histo_buckets[i]]) { |
| return grpc_stats_histo_buckets[i] - 1; |
| } |
| return std::upper_bound(grpc_stats_histo_bucket_boundaries[i], |
| grpc_stats_histo_bucket_boundaries[i] + |
| grpc_stats_histo_buckets[i], |
| j) - |
| grpc_stats_histo_bucket_boundaries[i] - 1; |
| } |
| |
| class HistogramTest : public ::testing::TestWithParam<int> {}; |
| |
| TEST_P(HistogramTest, IncHistogram) { |
| const int kHistogram = GetParam(); |
| std::vector<std::thread> threads; |
| int cur_bucket = 0; |
| auto run = [kHistogram](const std::vector<int>& test_values, |
| int expected_bucket) { |
| gpr_log(GPR_DEBUG, "expected_bucket:%d nvalues=%" PRIdPTR, expected_bucket, |
| test_values.size()); |
| for (auto j : test_values) { |
| Snapshot snapshot; |
| |
| grpc_core::ExecCtx exec_ctx; |
| grpc_stats_inc_histogram[kHistogram](j); |
| |
| auto delta = snapshot.delta(); |
| |
| EXPECT_EQ( |
| delta |
| .histograms[grpc_stats_histo_start[kHistogram] + expected_bucket], |
| 1) |
| << "\nhistogram:" << kHistogram |
| << "\nexpected_bucket:" << expected_bucket << "\nj:" << j; |
| } |
| }; |
| std::vector<int> test_values; |
| // largest bucket boundary for current histogram type. |
| int max_bucket_boundary = |
| grpc_stats_histo_bucket_boundaries[kHistogram] |
| [grpc_stats_histo_buckets[kHistogram] - |
| 1]; |
| for (int j = -1000; j < max_bucket_boundary + 1000;) { |
| int expected_bucket = FindExpectedBucket(kHistogram, j); |
| if (cur_bucket != expected_bucket) { |
| threads.emplace_back( |
| [test_values, run, cur_bucket]() { run(test_values, cur_bucket); }); |
| cur_bucket = expected_bucket; |
| test_values.clear(); |
| } |
| test_values.push_back(j); |
| if (j < max_bucket_boundary && |
| FindExpectedBucket(kHistogram, j + 1000) == expected_bucket && |
| FindExpectedBucket(kHistogram, j - 1000) == expected_bucket) { |
| // if we are far from bucket boundary, skip values to speed-up the tests |
| j += 500; |
| } else { |
| j++; |
| } |
| } |
| run(test_values, cur_bucket); |
| for (auto& t : threads) { |
| t.join(); |
| } |
| } |
| |
| INSTANTIATE_TEST_CASE_P(HistogramTestCases, HistogramTest, |
| ::testing::Range<int>(0, GRPC_STATS_HISTOGRAM_COUNT)); |
| |
| } // namespace testing |
| } // namespace grpc |
| |
| int main(int argc, char** argv) { |
| ::testing::InitGoogleTest(&argc, argv); |
| grpc_init(); |
| int ret = RUN_ALL_TESTS(); |
| grpc_shutdown(); |
| return ret; |
| } |