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