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269 lines
11 KiB
269 lines
11 KiB
/*
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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 "ProcStat.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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using ::android::base::StringPrintf;
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using ::android::base::WriteStringToFile;
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namespace {
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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:\nUserTime: %" PRIu64 " NiceTime: %" PRIu64 " SysTime: %" PRIu64
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" IdleTime: %" PRIu64 " IoWaitTime: %" PRIu64 " IrqTime: %" PRIu64
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" SoftIrqTime: %" PRIu64 " StealTime: %" PRIu64 " GuestTime: %" PRIu64
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" GuestNiceTime: %" PRIu64 "\nNumber of running processes: %" PRIu32
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"\nNumber of blocked processes: %" PRIu32,
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cpuStats.userTime, cpuStats.niceTime, cpuStats.sysTime, cpuStats.idleTime,
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cpuStats.ioWaitTime, cpuStats.irqTime, cpuStats.softIrqTime,
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cpuStats.stealTime, cpuStats.guestTime, cpuStats.guestNiceTime,
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info.runnableProcessesCnt, info.ioBlockedProcessesCnt);
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}
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} // namespace
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TEST(ProcStatTest, 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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"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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.userTime = 6200,
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.niceTime = 5700,
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.sysTime = 1700,
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.idleTime = 3100,
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.ioWaitTime = 1100,
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.irqTime = 5200,
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.softIrqTime = 3900,
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.stealTime = 0,
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.guestTime = 0,
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.guestNiceTime = 0,
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};
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expectedFirstDelta.runnableProcessesCnt = 17;
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expectedFirstDelta.ioBlockedProcessesCnt = 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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ProcStat procStat(tf.path);
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ASSERT_TRUE(procStat.enabled()) << "Temporary file is inaccessible";
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ASSERT_RESULT_OK(procStat.collect());
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const auto& actualFirstDelta = procStat.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 579020168\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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.userTime = 10000,
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.niceTime = 3000,
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.sysTime = 300,
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.idleTime = 1000,
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.ioWaitTime = 1100,
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.irqTime = 1000,
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.softIrqTime = 2000,
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.stealTime = 0,
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.guestTime = 0,
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.guestNiceTime = 0,
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};
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expectedSecondDelta.runnableProcessesCnt = 10;
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expectedSecondDelta.ioBlockedProcessesCnt = 2;
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ASSERT_TRUE(WriteStringToFile(secondSnapshot, tf.path));
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ASSERT_RESULT_OK(procStat.collect());
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const auto& actualSecondDelta = procStat.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(ProcStatTest, 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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ProcStat procStat(tf.path);
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ASSERT_TRUE(procStat.enabled()) << "Temporary file is inaccessible";
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EXPECT_FALSE(procStat.collect().ok()) << "No error returned for corrupted file";
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}
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TEST(ProcStatTest, 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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ProcStat procStat(tf.path);
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ASSERT_TRUE(procStat.enabled()) << "Temporary file is inaccessible";
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EXPECT_FALSE(procStat.collect().ok()) << "No error returned due to missing cpu line";
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}
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TEST(ProcStatTest, 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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ProcStat procStat(tf.path);
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ASSERT_TRUE(procStat.enabled()) << "Temporary file is inaccessible";
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EXPECT_FALSE(procStat.collect().ok()) << "No error returned due to missing procs_running line";
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}
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TEST(ProcStatTest, 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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ProcStat procStat(tf.path);
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ASSERT_TRUE(procStat.enabled()) << "Temporary file is inaccessible";
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EXPECT_FALSE(procStat.collect().ok()) << "No error returned due to missing procs_blocked line";
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}
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TEST(ProcStatTest, 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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ProcStat procStat(tf.path);
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ASSERT_TRUE(procStat.enabled()) << "Temporary file is inaccessible";
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EXPECT_FALSE(procStat.collect().ok()) << "No error returned due to unknown procs line";
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}
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TEST(ProcStatTest, TestProcStatContentsFromDevice) {
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ProcStat procStat;
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ASSERT_TRUE(procStat.enabled()) << kProcStatPath << " file is inaccessible";
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ASSERT_RESULT_OK(procStat.collect());
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const auto& info = procStat.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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EXPECT_GT(info.totalCpuTime(), 0);
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EXPECT_GT(info.totalProcessesCnt(), 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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