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267 lines
12 KiB
C++
267 lines
12 KiB
C++
//===- ProfileTest.cpp - XRay Profile unit tests ----------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/XRay/Profile.h"
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#include "gmock/gmock.h"
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#include "gtest/gtest.h"
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#include <numeric>
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namespace llvm {
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namespace xray {
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namespace {
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using ::testing::AllOf;
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using ::testing::ElementsAre;
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using ::testing::Eq;
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using ::testing::Field;
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using ::testing::Not;
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using ::testing::Pair;
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using ::testing::UnorderedElementsAre;
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TEST(ProfileTest, CreateProfile) { Profile P; }
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TEST(ProfileTest, InternPath) {
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Profile P;
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auto Path0 = P.internPath({3, 2, 1});
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auto Path1 = P.internPath({3, 2, 1});
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auto Path2 = P.internPath({2, 1});
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EXPECT_THAT(Path0, Eq(Path1));
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EXPECT_THAT(Path0, Not(Eq(Path2)));
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}
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TEST(ProfileTest, ExpandPath) {
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Profile P;
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auto PathID = P.internPath({3, 2, 1});
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auto PathOrError = P.expandPath(PathID);
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if (!PathOrError)
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FAIL() << "Error: " << PathOrError.takeError();
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EXPECT_THAT(PathOrError.get(), ElementsAre(3, 2, 1));
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}
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TEST(ProfileTest, AddBlocks) {
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Profile P;
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// Expect an error on adding empty blocks.
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EXPECT_TRUE(errorToBool(P.addBlock({})));
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// Thread blocks may not be empty.
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EXPECT_TRUE(errorToBool(P.addBlock({1, {}})));
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// Thread blocks with data must succeed.
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EXPECT_FALSE(errorToBool(P.addBlock(
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Profile::Block{Profile::ThreadID{1},
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{
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{P.internPath({2, 1}), Profile::Data{1, 1000}},
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{P.internPath({3, 2, 1}), Profile::Data{10, 100}},
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}})));
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}
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TEST(ProfileTest, CopyProfile) {
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Profile P0, P1;
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EXPECT_FALSE(errorToBool(P0.addBlock(
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Profile::Block{Profile::ThreadID{1},
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{
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{P0.internPath({2, 1}), Profile::Data{1, 1000}},
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{P0.internPath({3, 2, 1}), Profile::Data{10, 100}},
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}})));
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P1 = P0;
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EXPECT_THAT(
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P1, UnorderedElementsAre(AllOf(
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Field(&Profile::Block::Thread, Eq(Profile::ThreadID{1})),
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Field(&Profile::Block::PathData,
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UnorderedElementsAre(
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Pair(P1.internPath({2, 1}),
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AllOf(Field(&Profile::Data::CallCount, Eq(1u)),
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Field(&Profile::Data::CumulativeLocalTime,
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Eq(1000u)))),
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Pair(P1.internPath({3, 2, 1}),
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AllOf(Field(&Profile::Data::CallCount, Eq(10u)),
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Field(&Profile::Data::CumulativeLocalTime,
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Eq(100u)))))))));
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}
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TEST(ProfileTest, MoveProfile) {
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Profile P0, P1;
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EXPECT_FALSE(errorToBool(P0.addBlock(
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Profile::Block{Profile::ThreadID{1},
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{
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{P0.internPath({2, 1}), Profile::Data{1, 1000}},
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{P0.internPath({3, 2, 1}), Profile::Data{10, 100}},
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}})));
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P1 = std::move(P0);
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EXPECT_THAT(
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P1, UnorderedElementsAre(AllOf(
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Field(&Profile::Block::Thread, Eq(Profile::ThreadID{1})),
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Field(&Profile::Block::PathData,
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UnorderedElementsAre(
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Pair(P1.internPath({2, 1}),
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AllOf(Field(&Profile::Data::CallCount, Eq(1u)),
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Field(&Profile::Data::CumulativeLocalTime,
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Eq(1000u)))),
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Pair(P1.internPath({3, 2, 1}),
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AllOf(Field(&Profile::Data::CallCount, Eq(10u)),
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Field(&Profile::Data::CumulativeLocalTime,
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Eq(100u)))))))));
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EXPECT_THAT(P0, UnorderedElementsAre());
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}
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TEST(ProfileTest, MergeProfilesByThread) {
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Profile P0, P1;
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// Set up the blocks for two different threads in P0.
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EXPECT_FALSE(errorToBool(P0.addBlock(
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Profile::Block{Profile::ThreadID{1},
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{{P0.internPath({2, 1}), Profile::Data{1, 1000}},
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{P0.internPath({4, 1}), Profile::Data{1, 1000}}}})));
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EXPECT_FALSE(errorToBool(P0.addBlock(
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Profile::Block{Profile::ThreadID{2},
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{{P0.internPath({3, 1}), Profile::Data{1, 1000}}}})));
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// Set up the blocks for two different threads in P1.
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EXPECT_FALSE(errorToBool(P1.addBlock(
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Profile::Block{Profile::ThreadID{1},
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{{P1.internPath({2, 1}), Profile::Data{1, 1000}}}})));
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EXPECT_FALSE(errorToBool(P1.addBlock(
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Profile::Block{Profile::ThreadID{2},
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{{P1.internPath({3, 1}), Profile::Data{1, 1000}},
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{P1.internPath({4, 1}), Profile::Data{1, 1000}}}})));
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Profile Merged = mergeProfilesByThread(P0, P1);
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EXPECT_THAT(
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Merged,
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UnorderedElementsAre(
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// We want to see two threads after the merge.
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AllOf(Field(&Profile::Block::Thread, Eq(Profile::ThreadID{1})),
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Field(&Profile::Block::PathData,
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UnorderedElementsAre(
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Pair(Merged.internPath({2, 1}),
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AllOf(Field(&Profile::Data::CallCount, Eq(2u)),
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Field(&Profile::Data::CumulativeLocalTime,
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Eq(2000u)))),
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Pair(Merged.internPath({4, 1}),
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AllOf(Field(&Profile::Data::CallCount, Eq(1u)),
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Field(&Profile::Data::CumulativeLocalTime,
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Eq(1000u))))))),
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AllOf(Field(&Profile::Block::Thread, Eq(Profile::ThreadID{2})),
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Field(&Profile::Block::PathData,
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UnorderedElementsAre(
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Pair(Merged.internPath({3, 1}),
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AllOf(Field(&Profile::Data::CallCount, Eq(2u)),
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Field(&Profile::Data::CumulativeLocalTime,
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Eq(2000u)))),
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Pair(Merged.internPath({4, 1}),
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AllOf(Field(&Profile::Data::CallCount, Eq(1u)),
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Field(&Profile::Data::CumulativeLocalTime,
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Eq(1000u)))))))));
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}
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TEST(ProfileTest, MergeProfilesByStack) {
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Profile P0, P1;
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EXPECT_FALSE(errorToBool(P0.addBlock(
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Profile::Block{Profile::ThreadID{1},
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{{P0.internPath({2, 1}), Profile::Data{1, 1000}}}})));
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EXPECT_FALSE(errorToBool(P1.addBlock(
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Profile::Block{Profile::ThreadID{2},
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{{P1.internPath({2, 1}), Profile::Data{1, 1000}}}})));
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Profile Merged = mergeProfilesByStack(P0, P1);
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EXPECT_THAT(Merged,
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ElementsAre(AllOf(
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// We expect that we lose the ThreadID dimension in this
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// algorithm.
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Field(&Profile::Block::Thread, Eq(Profile::ThreadID{0})),
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Field(&Profile::Block::PathData,
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ElementsAre(Pair(
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Merged.internPath({2, 1}),
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AllOf(Field(&Profile::Data::CallCount, Eq(2u)),
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Field(&Profile::Data::CumulativeLocalTime,
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Eq(2000u)))))))));
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}
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TEST(ProfileTest, MergeProfilesByStackAccumulate) {
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std::vector<Profile> Profiles(3);
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EXPECT_FALSE(errorToBool(Profiles[0].addBlock(Profile::Block{
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Profile::ThreadID{1},
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{{Profiles[0].internPath({2, 1}), Profile::Data{1, 1000}}}})));
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EXPECT_FALSE(errorToBool(Profiles[1].addBlock(Profile::Block{
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Profile::ThreadID{2},
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{{Profiles[1].internPath({2, 1}), Profile::Data{1, 1000}}}})));
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EXPECT_FALSE(errorToBool(Profiles[2].addBlock(Profile::Block{
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Profile::ThreadID{3},
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{{Profiles[2].internPath({2, 1}), Profile::Data{1, 1000}}}})));
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Profile Merged = std::accumulate(Profiles.begin(), Profiles.end(), Profile(),
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mergeProfilesByStack);
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EXPECT_THAT(Merged,
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ElementsAre(AllOf(
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// We expect that we lose the ThreadID dimension in this
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// algorithm.
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Field(&Profile::Block::Thread, Eq(Profile::ThreadID{0})),
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Field(&Profile::Block::PathData,
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ElementsAre(Pair(
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Merged.internPath({2, 1}),
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AllOf(Field(&Profile::Data::CallCount, Eq(3u)),
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Field(&Profile::Data::CumulativeLocalTime,
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Eq(3000u)))))))));
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}
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TEST(ProfileTest, MergeProfilesByThreadAccumulate) {
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std::vector<Profile> Profiles(2);
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// Set up the blocks for two different threads in Profiles[0].
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EXPECT_FALSE(errorToBool(Profiles[0].addBlock(Profile::Block{
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Profile::ThreadID{1},
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{{Profiles[0].internPath({2, 1}), Profile::Data{1, 1000}},
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{Profiles[0].internPath({4, 1}), Profile::Data{1, 1000}}}})));
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EXPECT_FALSE(errorToBool(Profiles[0].addBlock(Profile::Block{
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Profile::ThreadID{2},
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{{Profiles[0].internPath({3, 1}), Profile::Data{1, 1000}}}})));
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// Set up the blocks for two different threads in Profiles[1].
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EXPECT_FALSE(errorToBool(Profiles[1].addBlock(Profile::Block{
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Profile::ThreadID{1},
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{{Profiles[1].internPath({2, 1}), Profile::Data{1, 1000}}}})));
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EXPECT_FALSE(errorToBool(Profiles[1].addBlock(Profile::Block{
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Profile::ThreadID{2},
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{{Profiles[1].internPath({3, 1}), Profile::Data{1, 1000}},
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{Profiles[1].internPath({4, 1}), Profile::Data{1, 1000}}}})));
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Profile Merged = std::accumulate(Profiles.begin(), Profiles.end(), Profile(),
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mergeProfilesByThread);
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EXPECT_THAT(
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Merged,
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UnorderedElementsAre(
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// We want to see two threads after the merge.
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AllOf(Field(&Profile::Block::Thread, Eq(Profile::ThreadID{1})),
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Field(&Profile::Block::PathData,
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UnorderedElementsAre(
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Pair(Merged.internPath({2, 1}),
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AllOf(Field(&Profile::Data::CallCount, Eq(2u)),
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Field(&Profile::Data::CumulativeLocalTime,
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Eq(2000u)))),
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Pair(Merged.internPath({4, 1}),
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AllOf(Field(&Profile::Data::CallCount, Eq(1u)),
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Field(&Profile::Data::CumulativeLocalTime,
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Eq(1000u))))))),
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AllOf(Field(&Profile::Block::Thread, Eq(Profile::ThreadID{2})),
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Field(&Profile::Block::PathData,
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UnorderedElementsAre(
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Pair(Merged.internPath({3, 1}),
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AllOf(Field(&Profile::Data::CallCount, Eq(2u)),
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Field(&Profile::Data::CumulativeLocalTime,
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Eq(2000u)))),
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Pair(Merged.internPath({4, 1}),
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AllOf(Field(&Profile::Data::CallCount, Eq(1u)),
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Field(&Profile::Data::CumulativeLocalTime,
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Eq(1000u)))))))));
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}
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// FIXME: Add a test creating a Trace and generating a Profile
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// FIXME: Add tests for ranking/sorting profile blocks by dimension
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} // namespace
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} // namespace xray
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} // namespace llvm
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