322 lines
13 KiB
C++
322 lines
13 KiB
C++
/*
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* Copyright 2020 The Android Open Source Project
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*
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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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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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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 "ProcStatCollector.h"
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#include <android-base/file.h>
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#include <android-base/stringprintf.h>
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#include <gmock/gmock.h>
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#include <inttypes.h>
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#include <string>
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namespace android {
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namespace automotive {
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namespace watchdog {
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namespace {
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using ::android::base::StringPrintf;
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using ::android::base::WriteStringToFile;
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const int64_t kMillisPerClockTick = 1000 / sysconf(_SC_CLK_TCK);
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int64_t clockTicksToMillis(int64_t ticks) {
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return ticks * kMillisPerClockTick;
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}
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std::string toString(const ProcStatInfo& info) {
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const auto& cpuStats = info.cpuStats;
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return StringPrintf("Cpu Stats:\nUserTimeMillis: %" PRIu64 " NiceTimeMillis: %" PRIu64
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" SysTimeMillis: %" PRIu64 " IdleTimeMillis: %" PRIu64
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" IoWaitTimeMillis: %" PRIu64 " IrqTimeMillis: %" PRIu64
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" SoftIrqTimeMillis: %" PRIu64 " StealTimeMillis: %" PRIu64
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" GuestTimeMillis: %" PRIu64 " GuestNiceTimeMillis: %" PRIu64
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"\nNumber of running processes: %" PRIu32
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"\nNumber of blocked processes: %" PRIu32,
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cpuStats.userTimeMillis, cpuStats.niceTimeMillis, cpuStats.sysTimeMillis,
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cpuStats.idleTimeMillis, cpuStats.ioWaitTimeMillis, cpuStats.irqTimeMillis,
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cpuStats.softIrqTimeMillis, cpuStats.stealTimeMillis,
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cpuStats.guestTimeMillis, cpuStats.guestNiceTimeMillis,
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info.runnableProcessCount, info.ioBlockedProcessCount);
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}
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} // namespace
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TEST(ProcStatCollectorTest, TestValidStatFile) {
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constexpr char firstSnapshot[] =
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"cpu 6200 5700 1700 3100 1100 5200 3900 0 0 0\n"
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"cpu0 2400 2900 600 690 340 4300 2100 0 0 0\n"
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"cpu1 1900 2380 510 760 51 370 1500 0 0 0\n"
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"cpu2 900 400 400 1000 600 400 160 0 0 0\n"
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"cpu3 1000 20 190 650 109 130 140 0 0 0\n"
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"intr 694351583 0 0 0 297062868 0 5922464 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 "
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"0 0\n"
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/* Skipped most of the intr line as it is not important for testing the ProcStat parsing
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* logic.
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*/
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"ctxt 579020168\n"
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"btime 1579718450\n"
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"processes 113804\n"
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"procs_running 17\n"
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"procs_blocked 5\n"
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"softirq 33275060 934664 11958403 5111 516325 200333 0 341482 10651335 0 8667407\n";
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ProcStatInfo expectedFirstDelta;
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expectedFirstDelta.cpuStats = {
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.userTimeMillis = clockTicksToMillis(6200),
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.niceTimeMillis = clockTicksToMillis(5700),
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.sysTimeMillis = clockTicksToMillis(1700),
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.idleTimeMillis = clockTicksToMillis(3100),
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.ioWaitTimeMillis = clockTicksToMillis(1100),
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.irqTimeMillis = clockTicksToMillis(5200),
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.softIrqTimeMillis = clockTicksToMillis(3900),
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.stealTimeMillis = clockTicksToMillis(0),
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.guestTimeMillis = clockTicksToMillis(0),
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.guestNiceTimeMillis = clockTicksToMillis(0),
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};
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expectedFirstDelta.contextSwitchesCount = 579020168;
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expectedFirstDelta.runnableProcessCount = 17;
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expectedFirstDelta.ioBlockedProcessCount = 5;
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TemporaryFile tf;
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ASSERT_NE(tf.fd, -1);
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ASSERT_TRUE(WriteStringToFile(firstSnapshot, tf.path));
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ProcStatCollector collector(tf.path);
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collector.init();
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ASSERT_TRUE(collector.enabled()) << "Temporary file is inaccessible";
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ASSERT_RESULT_OK(collector.collect());
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const auto& actualFirstDelta = collector.deltaStats();
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EXPECT_EQ(expectedFirstDelta, actualFirstDelta) << "First snapshot doesn't match.\nExpected:\n"
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<< toString(expectedFirstDelta) << "\nActual:\n"
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<< toString(actualFirstDelta);
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constexpr char secondSnapshot[] =
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"cpu 16200 8700 2000 4100 2200 6200 5900 0 0 0\n"
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"cpu0 4400 3400 700 890 800 4500 3100 0 0 0\n"
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"cpu1 5900 3380 610 960 100 670 2000 0 0 0\n"
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"cpu2 2900 1000 450 1400 800 600 460 0 0 0\n"
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"cpu3 3000 920 240 850 500 430 340 0 0 0\n"
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"intr 694351583 0 0 0 297062868 0 5922464 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 "
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"0 0\n"
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"ctxt 810020192\n"
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"btime 1579718450\n"
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"processes 113804\n"
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"procs_running 10\n"
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"procs_blocked 2\n"
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"softirq 33275060 934664 11958403 5111 516325 200333 0 341482 10651335 0 8667407\n";
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ProcStatInfo expectedSecondDelta;
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expectedSecondDelta.cpuStats = {
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.userTimeMillis = clockTicksToMillis(10000),
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.niceTimeMillis = clockTicksToMillis(3000),
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.sysTimeMillis = clockTicksToMillis(300),
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.idleTimeMillis = clockTicksToMillis(1000),
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.ioWaitTimeMillis = clockTicksToMillis(1100),
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.irqTimeMillis = clockTicksToMillis(1000),
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.softIrqTimeMillis = clockTicksToMillis(2000),
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.stealTimeMillis = clockTicksToMillis(0),
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.guestTimeMillis = clockTicksToMillis(0),
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.guestNiceTimeMillis = clockTicksToMillis(0),
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};
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expectedFirstDelta.contextSwitchesCount = 810020192;
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expectedSecondDelta.runnableProcessCount = 10;
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expectedSecondDelta.ioBlockedProcessCount = 2;
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ASSERT_TRUE(WriteStringToFile(secondSnapshot, tf.path));
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ASSERT_RESULT_OK(collector.collect());
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const auto& actualSecondDelta = collector.deltaStats();
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EXPECT_EQ(expectedSecondDelta, actualSecondDelta)
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<< "Second snapshot doesnt't match.\nExpected:\n"
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<< toString(expectedSecondDelta) << "\nActual:\n"
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<< toString(actualSecondDelta);
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}
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TEST(ProcStatCollectorTest, TestErrorOnCorruptedStatFile) {
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constexpr char contents[] =
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"cpu 6200 5700 1700 3100 CORRUPTED DATA\n"
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"cpu0 2400 2900 600 690 340 4300 2100 0 0 0\n"
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"cpu1 1900 2380 510 760 51 370 1500 0 0 0\n"
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"cpu2 900 400 400 1000 600 400 160 0 0 0\n"
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"cpu3 1000 20 190 650 109 130 140 0 0 0\n"
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"intr 694351583 0 0 0 297062868 0 5922464 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 "
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"0 0\n"
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"ctxt 579020168\n"
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"btime 1579718450\n"
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"processes 113804\n"
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"procs_running 17\n"
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"procs_blocked 5\n"
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"softirq 33275060 934664 11958403 5111 516325 200333 0 341482 10651335 0 8667407\n";
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TemporaryFile tf;
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ASSERT_NE(tf.fd, -1);
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ASSERT_TRUE(WriteStringToFile(contents, tf.path));
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ProcStatCollector collector(tf.path);
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collector.init();
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ASSERT_TRUE(collector.enabled()) << "Temporary file is inaccessible";
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EXPECT_FALSE(collector.collect().ok()) << "No error returned for corrupted file";
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}
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TEST(ProcStatCollectorTest, TestErrorOnMissingCpuLine) {
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constexpr char contents[] =
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"cpu0 2400 2900 600 690 340 4300 2100 0 0 0\n"
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"cpu1 1900 2380 510 760 51 370 1500 0 0 0\n"
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"cpu2 900 400 400 1000 600 400 160 0 0 0\n"
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"cpu3 1000 20 190 650 109 130 140 0 0 0\n"
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"intr 694351583 0 0 0 297062868 0 5922464 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 "
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"0 0\n"
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"ctxt 579020168\n"
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"btime 1579718450\n"
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"processes 113804\n"
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"procs_running 17\n"
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"procs_blocked 5\n"
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"softirq 33275060 934664 11958403 5111 516325 200333 0 341482 10651335 0 8667407\n";
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TemporaryFile tf;
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ASSERT_NE(tf.fd, -1);
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ASSERT_TRUE(WriteStringToFile(contents, tf.path));
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ProcStatCollector collector(tf.path);
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collector.init();
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ASSERT_TRUE(collector.enabled()) << "Temporary file is inaccessible";
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EXPECT_FALSE(collector.collect().ok()) << "No error returned due to missing cpu line";
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}
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TEST(ProcStatCollectorTest, TestErrorOnMissingCtxtLine) {
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constexpr char contents[] =
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"cpu 16200 8700 2000 4100 1250 6200 5900 0 0 0\n"
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"cpu0 2400 2900 600 690 340 4300 2100 0 0 0\n"
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"cpu1 1900 2380 510 760 51 370 1500 0 0 0\n"
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"cpu2 900 400 400 1000 600 400 160 0 0 0\n"
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"cpu3 1000 20 190 650 109 130 140 0 0 0\n"
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"intr 694351583 0 0 0 297062868 0 5922464 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 "
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"0 0\n"
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"btime 1579718450\n"
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"processes 113804\n"
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"procs_running 17\n"
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"procs_blocked 5\n"
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"softirq 33275060 934664 11958403 5111 516325 200333 0 341482 10651335 0 8667407\n";
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TemporaryFile tf;
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ASSERT_NE(tf.fd, -1);
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ASSERT_TRUE(WriteStringToFile(contents, tf.path));
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ProcStatCollector collector(tf.path);
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collector.init();
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ASSERT_TRUE(collector.enabled()) << "Temporary file is inaccessible";
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EXPECT_FALSE(collector.collect().ok()) << "No error returned due to missing ctxt line";
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}
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TEST(ProcStatCollectorTest, TestErrorOnMissingProcsRunningLine) {
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constexpr char contents[] =
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"cpu 16200 8700 2000 4100 1250 6200 5900 0 0 0\n"
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"cpu0 2400 2900 600 690 340 4300 2100 0 0 0\n"
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"cpu1 1900 2380 510 760 51 370 1500 0 0 0\n"
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"cpu2 900 400 400 1000 600 400 160 0 0 0\n"
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"cpu3 1000 20 190 650 109 130 140 0 0 0\n"
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"intr 694351583 0 0 0 297062868 0 5922464 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 "
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"0 0\n"
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"ctxt 579020168\n"
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"btime 1579718450\n"
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"processes 113804\n"
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"procs_blocked 5\n"
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"softirq 33275060 934664 11958403 5111 516325 200333 0 341482 10651335 0 8667407\n";
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TemporaryFile tf;
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ASSERT_NE(tf.fd, -1);
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ASSERT_TRUE(WriteStringToFile(contents, tf.path));
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ProcStatCollector collector(tf.path);
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collector.init();
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ASSERT_TRUE(collector.enabled()) << "Temporary file is inaccessible";
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EXPECT_FALSE(collector.collect().ok()) << "No error returned due to missing procs_running line";
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}
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TEST(ProcStatCollectorTest, TestErrorOnMissingProcsBlockedLine) {
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constexpr char contents[] =
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"cpu 16200 8700 2000 4100 1250 6200 5900 0 0 0\n"
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"cpu0 2400 2900 600 690 340 4300 2100 0 0 0\n"
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"cpu1 1900 2380 510 760 51 370 1500 0 0 0\n"
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"cpu2 900 400 400 1000 600 400 160 0 0 0\n"
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"cpu3 1000 20 190 650 109 130 140 0 0 0\n"
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"intr 694351583 0 0 0 297062868 0 5922464 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 "
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"0 0\n"
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"ctxt 579020168\n"
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"btime 1579718450\n"
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"processes 113804\n"
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"procs_running 17\n"
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"softirq 33275060 934664 11958403 5111 516325 200333 0 341482 10651335 0 8667407\n";
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TemporaryFile tf;
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ASSERT_NE(tf.fd, -1);
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ASSERT_TRUE(WriteStringToFile(contents, tf.path));
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ProcStatCollector collector(tf.path);
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collector.init();
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ASSERT_TRUE(collector.enabled()) << "Temporary file is inaccessible";
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EXPECT_FALSE(collector.collect().ok()) << "No error returned due to missing procs_blocked line";
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}
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TEST(ProcStatCollectorTest, TestErrorOnUnknownProcsLine) {
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constexpr char contents[] =
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"cpu 16200 8700 2000 4100 1250 6200 5900 0 0 0\n"
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"cpu0 2400 2900 600 690 340 4300 2100 0 0 0\n"
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"cpu1 1900 2380 510 760 51 370 1500 0 0 0\n"
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"cpu2 900 400 400 1000 600 400 160 0 0 0\n"
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"cpu3 1000 20 190 650 109 130 140 0 0 0\n"
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"intr 694351583 0 0 0 297062868 0 5922464 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 "
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"0 0\n"
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"ctxt 579020168\n"
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"btime 1579718450\n"
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"processes 113804\n"
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"procs_running 17\n"
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"procs_blocked 5\n"
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"procs_sleeping 15\n"
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"softirq 33275060 934664 11958403 5111 516325 200333 0 341482 10651335 0 8667407\n";
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TemporaryFile tf;
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ASSERT_NE(tf.fd, -1);
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ASSERT_TRUE(WriteStringToFile(contents, tf.path));
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ProcStatCollector collector(tf.path);
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collector.init();
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ASSERT_TRUE(collector.enabled()) << "Temporary file is inaccessible";
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EXPECT_FALSE(collector.collect().ok()) << "No error returned due to unknown procs line";
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}
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TEST(ProcStatCollectorTest, TestProcStatContentsFromDevice) {
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ProcStatCollector collector;
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collector.init();
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ASSERT_TRUE(collector.enabled()) << kProcStatPath << " file is inaccessible";
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ASSERT_RESULT_OK(collector.collect());
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const auto& info = collector.deltaStats();
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/* The below checks should pass because the /proc/stats file should have the CPU time spent
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* since bootup and there should be at least one running process.
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*/
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EXPECT_GT(info.totalCpuTimeMillis(), 0);
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EXPECT_GT(info.totalProcessCount(), static_cast<uint32_t>(0));
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}
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} // namespace watchdog
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} // namespace automotive
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} // namespace android
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