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/*
* Copyright 2020 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 "ProcStat.h"
#include <android-base/file.h>
#include <android-base/stringprintf.h>
#include <inttypes.h>
#include <string>
#include "gmock/gmock.h"
namespace android {
namespace automotive {
namespace watchdog {
using android::base::StringPrintf;
using android::base::WriteStringToFile;
namespace {
std::string toString(const ProcStatInfo& info) {
const auto& cpuStats = info.cpuStats;
return StringPrintf("Cpu Stats:\nUserTime: %" PRIu64 " NiceTime: %" PRIu64 " SysTime: %" PRIu64
" IdleTime: %" PRIu64 " IoWaitTime: %" PRIu64 " IrqTime: %" PRIu64
" SoftIrqTime: %" PRIu64 " StealTime: %" PRIu64 " GuestTime: %" PRIu64
" GuestNiceTime: %" PRIu64 "\nNumber of running processes: %" PRIu32
"\nNumber of blocked processes: %" PRIu32,
cpuStats.userTime, cpuStats.niceTime, cpuStats.sysTime, cpuStats.idleTime,
cpuStats.ioWaitTime, cpuStats.irqTime, cpuStats.softIrqTime,
cpuStats.stealTime, cpuStats.guestTime, cpuStats.guestNiceTime,
info.runnableProcessesCnt, info.ioBlockedProcessesCnt);
}
} // namespace
TEST(ProcStatTest, TestValidStatFile) {
constexpr char firstSnapshot[] =
"cpu 6200 5700 1700 3100 1100 5200 3900 0 0 0\n"
"cpu0 2400 2900 600 690 340 4300 2100 0 0 0\n"
"cpu1 1900 2380 510 760 51 370 1500 0 0 0\n"
"cpu2 900 400 400 1000 600 400 160 0 0 0\n"
"cpu3 1000 20 190 650 109 130 140 0 0 0\n"
"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 "
"0 0\n"
// Skipped most of the intr line as it is not important for testing the ProcStat parsing
// logic.
"ctxt 579020168\n"
"btime 1579718450\n"
"processes 113804\n"
"procs_running 17\n"
"procs_blocked 5\n"
"softirq 33275060 934664 11958403 5111 516325 200333 0 341482 10651335 0 8667407\n";
ProcStatInfo expectedFirstDelta;
expectedFirstDelta.cpuStats = {
.userTime = 6200,
.niceTime = 5700,
.sysTime = 1700,
.idleTime = 3100,
.ioWaitTime = 1100,
.irqTime = 5200,
.softIrqTime = 3900,
.stealTime = 0,
.guestTime = 0,
.guestNiceTime = 0,
};
expectedFirstDelta.runnableProcessesCnt = 17;
expectedFirstDelta.ioBlockedProcessesCnt = 5;
TemporaryFile tf;
ASSERT_NE(tf.fd, -1);
ASSERT_TRUE(WriteStringToFile(firstSnapshot, tf.path));
ProcStat procStat(tf.path);
ASSERT_TRUE(procStat.enabled()) << "Temporary file is inaccessible";
const auto& actualFirstDelta = procStat.collect();
EXPECT_RESULT_OK(actualFirstDelta);
EXPECT_EQ(expectedFirstDelta, *actualFirstDelta)
<< "First snapshot doesnt't match.\nExpected:\n"
<< toString(expectedFirstDelta) << "\nActual:\n"
<< toString(*actualFirstDelta);
constexpr char secondSnapshot[] =
"cpu 16200 8700 2000 4100 2200 6200 5900 0 0 0\n"
"cpu0 4400 3400 700 890 800 4500 3100 0 0 0\n"
"cpu1 5900 3380 610 960 100 670 2000 0 0 0\n"
"cpu2 2900 1000 450 1400 800 600 460 0 0 0\n"
"cpu3 3000 920 240 850 500 430 340 0 0 0\n"
"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 "
"0 0\n"
"ctxt 579020168\n"
"btime 1579718450\n"
"processes 113804\n"
"procs_running 10\n"
"procs_blocked 2\n"
"softirq 33275060 934664 11958403 5111 516325 200333 0 341482 10651335 0 8667407\n";
ProcStatInfo expectedSecondDelta;
expectedSecondDelta.cpuStats = {
.userTime = 10000,
.niceTime = 3000,
.sysTime = 300,
.idleTime = 1000,
.ioWaitTime = 1100,
.irqTime = 1000,
.softIrqTime = 2000,
.stealTime = 0,
.guestTime = 0,
.guestNiceTime = 0,
};
expectedSecondDelta.runnableProcessesCnt = 10;
expectedSecondDelta.ioBlockedProcessesCnt = 2;
ASSERT_TRUE(WriteStringToFile(secondSnapshot, tf.path));
const auto& actualSecondDelta = procStat.collect();
EXPECT_RESULT_OK(actualSecondDelta);
EXPECT_EQ(expectedSecondDelta, *actualSecondDelta)
<< "Second snapshot doesnt't match.\nExpected:\n"
<< toString(expectedSecondDelta) << "\nActual:\n"
<< toString(*actualSecondDelta);
}
TEST(ProcStatTest, TestErrorOnCorruptedStatFile) {
constexpr char contents[] =
"cpu 6200 5700 1700 3100 CORRUPTED DATA\n"
"cpu0 2400 2900 600 690 340 4300 2100 0 0 0\n"
"cpu1 1900 2380 510 760 51 370 1500 0 0 0\n"
"cpu2 900 400 400 1000 600 400 160 0 0 0\n"
"cpu3 1000 20 190 650 109 130 140 0 0 0\n"
"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 "
"0 0\n"
"ctxt 579020168\n"
"btime 1579718450\n"
"processes 113804\n"
"procs_running 17\n"
"procs_blocked 5\n"
"softirq 33275060 934664 11958403 5111 516325 200333 0 341482 10651335 0 8667407\n";
TemporaryFile tf;
ASSERT_NE(tf.fd, -1);
ASSERT_TRUE(WriteStringToFile(contents, tf.path));
ProcStat procStat(tf.path);
ASSERT_TRUE(procStat.enabled()) << "Temporary file is inaccessible";
EXPECT_FALSE(procStat.collect().ok()) << "No error returned for corrupted file";
}
TEST(ProcStatTest, TestErrorOnMissingCpuLine) {
constexpr char contents[] =
"cpu0 2400 2900 600 690 340 4300 2100 0 0 0\n"
"cpu1 1900 2380 510 760 51 370 1500 0 0 0\n"
"cpu2 900 400 400 1000 600 400 160 0 0 0\n"
"cpu3 1000 20 190 650 109 130 140 0 0 0\n"
"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 "
"0 0\n"
"ctxt 579020168\n"
"btime 1579718450\n"
"processes 113804\n"
"procs_running 17\n"
"procs_blocked 5\n"
"softirq 33275060 934664 11958403 5111 516325 200333 0 341482 10651335 0 8667407\n";
TemporaryFile tf;
ASSERT_NE(tf.fd, -1);
ASSERT_TRUE(WriteStringToFile(contents, tf.path));
ProcStat procStat(tf.path);
ASSERT_TRUE(procStat.enabled()) << "Temporary file is inaccessible";
EXPECT_FALSE(procStat.collect().ok()) << "No error returned due to missing cpu line";
}
TEST(ProcStatTest, TestErrorOnMissingProcsRunningLine) {
constexpr char contents[] =
"cpu 16200 8700 2000 4100 1250 6200 5900 0 0 0\n"
"cpu0 2400 2900 600 690 340 4300 2100 0 0 0\n"
"cpu1 1900 2380 510 760 51 370 1500 0 0 0\n"
"cpu2 900 400 400 1000 600 400 160 0 0 0\n"
"cpu3 1000 20 190 650 109 130 140 0 0 0\n"
"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 "
"0 0\n"
"ctxt 579020168\n"
"btime 1579718450\n"
"processes 113804\n"
"procs_blocked 5\n"
"softirq 33275060 934664 11958403 5111 516325 200333 0 341482 10651335 0 8667407\n";
TemporaryFile tf;
ASSERT_NE(tf.fd, -1);
ASSERT_TRUE(WriteStringToFile(contents, tf.path));
ProcStat procStat(tf.path);
ASSERT_TRUE(procStat.enabled()) << "Temporary file is inaccessible";
EXPECT_FALSE(procStat.collect().ok()) << "No error returned due to missing procs_running line";
}
TEST(ProcStatTest, TestErrorOnMissingProcsBlockedLine) {
constexpr char contents[] =
"cpu 16200 8700 2000 4100 1250 6200 5900 0 0 0\n"
"cpu0 2400 2900 600 690 340 4300 2100 0 0 0\n"
"cpu1 1900 2380 510 760 51 370 1500 0 0 0\n"
"cpu2 900 400 400 1000 600 400 160 0 0 0\n"
"cpu3 1000 20 190 650 109 130 140 0 0 0\n"
"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 "
"0 0\n"
"ctxt 579020168\n"
"btime 1579718450\n"
"processes 113804\n"
"procs_running 17\n"
"softirq 33275060 934664 11958403 5111 516325 200333 0 341482 10651335 0 8667407\n";
TemporaryFile tf;
ASSERT_NE(tf.fd, -1);
ASSERT_TRUE(WriteStringToFile(contents, tf.path));
ProcStat procStat(tf.path);
ASSERT_TRUE(procStat.enabled()) << "Temporary file is inaccessible";
EXPECT_FALSE(procStat.collect().ok()) << "No error returned due to missing procs_blocked line";
}
TEST(ProcStatTest, TestErrorOnUnknownProcsLine) {
constexpr char contents[] =
"cpu 16200 8700 2000 4100 1250 6200 5900 0 0 0\n"
"cpu0 2400 2900 600 690 340 4300 2100 0 0 0\n"
"cpu1 1900 2380 510 760 51 370 1500 0 0 0\n"
"cpu2 900 400 400 1000 600 400 160 0 0 0\n"
"cpu3 1000 20 190 650 109 130 140 0 0 0\n"
"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 "
"0 0\n"
"ctxt 579020168\n"
"btime 1579718450\n"
"processes 113804\n"
"procs_running 17\n"
"procs_blocked 5\n"
"procs_sleeping 15\n"
"softirq 33275060 934664 11958403 5111 516325 200333 0 341482 10651335 0 8667407\n";
TemporaryFile tf;
ASSERT_NE(tf.fd, -1);
ASSERT_TRUE(WriteStringToFile(contents, tf.path));
ProcStat procStat(tf.path);
ASSERT_TRUE(procStat.enabled()) << "Temporary file is inaccessible";
EXPECT_FALSE(procStat.collect().ok()) << "No error returned due to unknown procs line";
}
TEST(ProcStatTest, TestProcStatContentsFromDevice) {
ProcStat procStat;
ASSERT_TRUE(procStat.enabled()) << kProcStatPath << " file is inaccessible";
const auto& info = procStat.collect();
ASSERT_RESULT_OK(info);
// The below checks should pass because the /proc/stats file should have the CPU time spent
// since bootup and there should be at least one running process.
EXPECT_GT(info->totalCpuTime(), 0);
EXPECT_GT(info->totalProcessesCnt(), 0);
}
} // namespace watchdog
} // namespace automotive
} // namespace android