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/*
* Copyright (C) 2015 The Android Open Source Project
*
* 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 <gtest/gtest.h>
#include "sample_tree.h"
struct ExpectedSampleInMap {
int pid;
int tid;
const char* comm;
std::string dso_name;
uint64_t map_start_addr;
size_t sample_count;
};
static void SampleMatchExpectation(const SampleEntry& sample, const ExpectedSampleInMap& expected,
bool* has_error) {
*has_error = true;
ASSERT_TRUE(sample.thread != nullptr);
ASSERT_EQ(expected.pid, sample.thread->pid);
ASSERT_EQ(expected.tid, sample.thread->tid);
ASSERT_STREQ(expected.comm, sample.thread_comm);
ASSERT_TRUE(sample.map != nullptr);
ASSERT_EQ(expected.dso_name, sample.map->dso->path);
ASSERT_EQ(expected.map_start_addr, sample.map->start_addr);
ASSERT_EQ(expected.sample_count, sample.sample_count);
*has_error = false;
}
static void CheckSampleCallback(const SampleEntry& sample,
std::vector<ExpectedSampleInMap>& expected_samples, size_t* pos) {
ASSERT_LT(*pos, expected_samples.size());
bool has_error;
SampleMatchExpectation(sample, expected_samples[*pos], &has_error);
ASSERT_FALSE(has_error) << "Error matching sample at pos " << *pos;
++*pos;
}
static int CompareSampleFunction(const SampleEntry& sample1, const SampleEntry& sample2) {
if (sample1.thread->pid != sample2.thread->pid) {
return sample1.thread->pid - sample2.thread->pid;
}
if (sample1.thread->tid != sample2.thread->tid) {
return sample1.thread->tid - sample2.thread->tid;
}
if (strcmp(sample1.thread_comm, sample2.thread_comm) != 0) {
return strcmp(sample1.thread_comm, sample2.thread_comm);
}
if (sample1.map->dso->path != sample2.map->dso->path) {
return sample1.map->dso->path > sample2.map->dso->path ? 1 : -1;
}
if (sample1.map->start_addr != sample2.map->start_addr) {
return sample1.map->start_addr - sample2.map->start_addr;
}
return 0;
}
void VisitSampleTree(SampleTree* sample_tree,
const std::vector<ExpectedSampleInMap>& expected_samples) {
size_t pos = 0;
sample_tree->VisitAllSamples(
std::bind(&CheckSampleCallback, std::placeholders::_1, expected_samples, &pos));
ASSERT_EQ(expected_samples.size(), pos);
}
class SampleTreeTest : public testing::Test {
protected:
virtual void SetUp() {
thread_tree.AddThread(1, 1, "p1t1");
thread_tree.AddThread(1, 11, "p1t11");
thread_tree.AddThread(2, 2, "p2t2");
thread_tree.AddThreadMap(1, 1, 1, 5, 0, 0, "process1_thread1");
thread_tree.AddThreadMap(1, 1, 6, 5, 0, 0, "process1_thread1_map2");
thread_tree.AddThreadMap(1, 11, 1, 10, 0, 0, "process1_thread11");
thread_tree.AddThreadMap(2, 2, 1, 20, 0, 0, "process2_thread2");
thread_tree.AddKernelMap(10, 20, 0, 0, "kernel");
sample_tree = std::unique_ptr<SampleTree>(new SampleTree(&thread_tree, CompareSampleFunction));
}
void VisitSampleTree(const std::vector<ExpectedSampleInMap>& expected_samples) {
::VisitSampleTree(sample_tree.get(), expected_samples);
}
ThreadTree thread_tree;
std::unique_ptr<SampleTree> sample_tree;
};
TEST_F(SampleTreeTest, ip_in_map) {
sample_tree->AddSample(1, 1, 1, 0, 0, false);
sample_tree->AddSample(1, 1, 2, 0, 0, false);
sample_tree->AddSample(1, 1, 5, 0, 0, false);
std::vector<ExpectedSampleInMap> expected_samples = {
{1, 1, "p1t1", "process1_thread1", 1, 3},
};
VisitSampleTree(expected_samples);
}
TEST_F(SampleTreeTest, different_pid) {
sample_tree->AddSample(1, 1, 1, 0, 0, false);
sample_tree->AddSample(2, 2, 1, 0, 0, false);
std::vector<ExpectedSampleInMap> expected_samples = {
{1, 1, "p1t1", "process1_thread1", 1, 1}, {2, 2, "p2t2", "process2_thread2", 1, 1},
};
VisitSampleTree(expected_samples);
}
TEST_F(SampleTreeTest, different_tid) {
sample_tree->AddSample(1, 1, 1, 0, 0, false);
sample_tree->AddSample(1, 11, 1, 0, 0, false);
std::vector<ExpectedSampleInMap> expected_samples = {
{1, 1, "p1t1", "process1_thread1", 1, 1}, {1, 11, "p1t11", "process1_thread11", 1, 1},
};
VisitSampleTree(expected_samples);
}
TEST_F(SampleTreeTest, different_comm) {
sample_tree->AddSample(1, 1, 1, 0, 0, false);
thread_tree.AddThread(1, 1, "p1t1_comm2");
sample_tree->AddSample(1, 1, 1, 0, 0, false);
std::vector<ExpectedSampleInMap> expected_samples = {
{1, 1, "p1t1", "process1_thread1", 1, 1}, {1, 1, "p1t1_comm2", "process1_thread1", 1, 1},
};
VisitSampleTree(expected_samples);
}
TEST_F(SampleTreeTest, different_map) {
sample_tree->AddSample(1, 1, 1, 0, 0, false);
sample_tree->AddSample(1, 1, 6, 0, 0, false);
std::vector<ExpectedSampleInMap> expected_samples = {
{1, 1, "p1t1", "process1_thread1", 1, 1}, {1, 1, "p1t1", "process1_thread1_map2", 6, 1},
};
VisitSampleTree(expected_samples);
}
TEST_F(SampleTreeTest, unmapped_sample) {
sample_tree->AddSample(1, 1, 0, 0, 0, false);
sample_tree->AddSample(1, 1, 31, 0, 0, false);
sample_tree->AddSample(1, 1, 70, 0, 0, false);
// Match the unknown map.
std::vector<ExpectedSampleInMap> expected_samples = {
{1, 1, "p1t1", "unknown", 0, 3},
};
VisitSampleTree(expected_samples);
}
TEST_F(SampleTreeTest, map_kernel) {
sample_tree->AddSample(1, 1, 10, 0, 0, true);
sample_tree->AddSample(1, 1, 10, 0, 0, false);
std::vector<ExpectedSampleInMap> expected_samples = {
{1, 1, "p1t1", "kernel", 10, 1}, {1, 1, "p1t1", "process1_thread1_map2", 6, 1},
};
VisitSampleTree(expected_samples);
}
TEST(sample_tree, overlapped_map) {
ThreadTree thread_tree;
SampleTree sample_tree(&thread_tree, CompareSampleFunction);
thread_tree.AddThread(1, 1, "thread1");
thread_tree.AddThreadMap(1, 1, 1, 10, 0, 0, "map1"); // Add map 1.
sample_tree.AddSample(1, 1, 5, 0, 0, false); // Hit map 1.
thread_tree.AddThreadMap(1, 1, 5, 20, 0, 0, "map2"); // Add map 2.
sample_tree.AddSample(1, 1, 6, 0, 0, false); // Hit map 2.
sample_tree.AddSample(1, 1, 4, 0, 0, false); // Hit unknown map.
thread_tree.AddThreadMap(1, 1, 2, 7, 0, 0, "map3"); // Add map 3.
sample_tree.AddSample(1, 1, 7, 0, 0, false); // Hit map 3.
sample_tree.AddSample(1, 1, 10, 0, 0, false); // Hit unknown map.
std::vector<ExpectedSampleInMap> expected_samples = {
{1, 1, "thread1", "map1", 1, 1},
{1, 1, "thread1", "map2", 5, 1},
{1, 1, "thread1", "map3", 2, 1},
{1, 1, "thread1", "unknown", 0, 2},
};
VisitSampleTree(&sample_tree, expected_samples);
}
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