| /* |
| * Copyright (C) 2007 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. |
| */ |
| |
| package com.android.internal.os; |
| |
| import static android.os.Process.*; |
| |
| import android.annotation.UnsupportedAppUsage; |
| import android.os.Process; |
| import android.os.StrictMode; |
| import android.os.SystemClock; |
| import android.system.ErrnoException; |
| import android.system.Os; |
| import android.system.OsConstants; |
| import android.util.Slog; |
| |
| import com.android.internal.util.FastPrintWriter; |
| |
| import java.io.File; |
| import java.io.PrintWriter; |
| import java.io.StringWriter; |
| import java.text.SimpleDateFormat; |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.Comparator; |
| import java.util.Date; |
| import java.util.List; |
| |
| public class ProcessCpuTracker { |
| private static final String TAG = "ProcessCpuTracker"; |
| private static final boolean DEBUG = false; |
| private static final boolean localLOGV = DEBUG || false; |
| |
| private static final int[] PROCESS_STATS_FORMAT = new int[] { |
| PROC_SPACE_TERM, |
| PROC_SPACE_TERM|PROC_PARENS, |
| PROC_SPACE_TERM, |
| PROC_SPACE_TERM, |
| PROC_SPACE_TERM, |
| PROC_SPACE_TERM, |
| PROC_SPACE_TERM, |
| PROC_SPACE_TERM, |
| PROC_SPACE_TERM, |
| PROC_SPACE_TERM|PROC_OUT_LONG, // 10: minor faults |
| PROC_SPACE_TERM, |
| PROC_SPACE_TERM|PROC_OUT_LONG, // 12: major faults |
| PROC_SPACE_TERM, |
| PROC_SPACE_TERM|PROC_OUT_LONG, // 14: utime |
| PROC_SPACE_TERM|PROC_OUT_LONG, // 15: stime |
| }; |
| |
| static final int PROCESS_STAT_MINOR_FAULTS = 0; |
| static final int PROCESS_STAT_MAJOR_FAULTS = 1; |
| static final int PROCESS_STAT_UTIME = 2; |
| static final int PROCESS_STAT_STIME = 3; |
| |
| /** Stores user time and system time in jiffies. */ |
| private final long[] mProcessStatsData = new long[4]; |
| |
| /** Stores user time and system time in jiffies. Used for |
| * public API to retrieve CPU use for a process. Must lock while in use. */ |
| private final long[] mSinglePidStatsData = new long[4]; |
| |
| private static final int[] PROCESS_FULL_STATS_FORMAT = new int[] { |
| PROC_SPACE_TERM, |
| PROC_SPACE_TERM|PROC_PARENS|PROC_OUT_STRING, // 2: name |
| PROC_SPACE_TERM, |
| PROC_SPACE_TERM, |
| PROC_SPACE_TERM, |
| PROC_SPACE_TERM, |
| PROC_SPACE_TERM, |
| PROC_SPACE_TERM, |
| PROC_SPACE_TERM, |
| PROC_SPACE_TERM|PROC_OUT_LONG, // 10: minor faults |
| PROC_SPACE_TERM, |
| PROC_SPACE_TERM|PROC_OUT_LONG, // 12: major faults |
| PROC_SPACE_TERM, |
| PROC_SPACE_TERM|PROC_OUT_LONG, // 14: utime |
| PROC_SPACE_TERM|PROC_OUT_LONG, // 15: stime |
| PROC_SPACE_TERM, |
| PROC_SPACE_TERM, |
| PROC_SPACE_TERM, |
| PROC_SPACE_TERM, |
| PROC_SPACE_TERM, |
| PROC_SPACE_TERM, |
| PROC_SPACE_TERM, |
| PROC_SPACE_TERM|PROC_OUT_LONG, // 23: vsize |
| }; |
| |
| static final int PROCESS_FULL_STAT_MINOR_FAULTS = 1; |
| static final int PROCESS_FULL_STAT_MAJOR_FAULTS = 2; |
| static final int PROCESS_FULL_STAT_UTIME = 3; |
| static final int PROCESS_FULL_STAT_STIME = 4; |
| static final int PROCESS_FULL_STAT_VSIZE = 5; |
| |
| private final String[] mProcessFullStatsStringData = new String[6]; |
| private final long[] mProcessFullStatsData = new long[6]; |
| |
| private static final int[] SYSTEM_CPU_FORMAT = new int[] { |
| PROC_SPACE_TERM|PROC_COMBINE, |
| PROC_SPACE_TERM|PROC_OUT_LONG, // 1: user time |
| PROC_SPACE_TERM|PROC_OUT_LONG, // 2: nice time |
| PROC_SPACE_TERM|PROC_OUT_LONG, // 3: sys time |
| PROC_SPACE_TERM|PROC_OUT_LONG, // 4: idle time |
| PROC_SPACE_TERM|PROC_OUT_LONG, // 5: iowait time |
| PROC_SPACE_TERM|PROC_OUT_LONG, // 6: irq time |
| PROC_SPACE_TERM|PROC_OUT_LONG // 7: softirq time |
| }; |
| |
| private final long[] mSystemCpuData = new long[7]; |
| |
| private static final int[] LOAD_AVERAGE_FORMAT = new int[] { |
| PROC_SPACE_TERM|PROC_OUT_FLOAT, // 0: 1 min |
| PROC_SPACE_TERM|PROC_OUT_FLOAT, // 1: 5 mins |
| PROC_SPACE_TERM|PROC_OUT_FLOAT // 2: 15 mins |
| }; |
| |
| private final float[] mLoadAverageData = new float[3]; |
| |
| private final boolean mIncludeThreads; |
| |
| // How long a CPU jiffy is in milliseconds. |
| private final long mJiffyMillis; |
| |
| private float mLoad1 = 0; |
| private float mLoad5 = 0; |
| private float mLoad15 = 0; |
| |
| // All times are in milliseconds. They are converted from jiffies to milliseconds |
| // when extracted from the kernel. |
| private long mCurrentSampleTime; |
| private long mLastSampleTime; |
| |
| private long mCurrentSampleRealTime; |
| private long mLastSampleRealTime; |
| |
| private long mCurrentSampleWallTime; |
| private long mLastSampleWallTime; |
| |
| private long mBaseUserTime; |
| private long mBaseSystemTime; |
| private long mBaseIoWaitTime; |
| private long mBaseIrqTime; |
| private long mBaseSoftIrqTime; |
| private long mBaseIdleTime; |
| private int mRelUserTime; |
| private int mRelSystemTime; |
| private int mRelIoWaitTime; |
| private int mRelIrqTime; |
| private int mRelSoftIrqTime; |
| private int mRelIdleTime; |
| private boolean mRelStatsAreGood; |
| |
| private int[] mCurPids; |
| private int[] mCurThreadPids; |
| |
| private final ArrayList<Stats> mProcStats = new ArrayList<Stats>(); |
| private final ArrayList<Stats> mWorkingProcs = new ArrayList<Stats>(); |
| private boolean mWorkingProcsSorted; |
| |
| private boolean mFirst = true; |
| |
| public interface FilterStats { |
| /** Which stats to pick when filtering */ |
| boolean needed(Stats stats); |
| } |
| |
| public static class Stats { |
| public final int pid; |
| public final int uid; |
| final String statFile; |
| final String cmdlineFile; |
| final String threadsDir; |
| final ArrayList<Stats> threadStats; |
| final ArrayList<Stats> workingThreads; |
| |
| public BatteryStatsImpl.Uid.Proc batteryStats; |
| |
| public boolean interesting; |
| |
| public String baseName; |
| @UnsupportedAppUsage |
| public String name; |
| public int nameWidth; |
| |
| // vsize capture when process first detected; can be used to |
| // filter out kernel processes. |
| public long vsize; |
| |
| /** |
| * Time in milliseconds. |
| */ |
| public long base_uptime; |
| |
| /** |
| * Time in milliseconds. |
| */ |
| @UnsupportedAppUsage |
| public long rel_uptime; |
| |
| /** |
| * Time in milliseconds. |
| */ |
| public long base_utime; |
| |
| /** |
| * Time in milliseconds. |
| */ |
| public long base_stime; |
| |
| /** |
| * Time in milliseconds. |
| */ |
| @UnsupportedAppUsage |
| public int rel_utime; |
| |
| /** |
| * Time in milliseconds. |
| */ |
| @UnsupportedAppUsage |
| public int rel_stime; |
| |
| public long base_minfaults; |
| public long base_majfaults; |
| public int rel_minfaults; |
| public int rel_majfaults; |
| |
| public boolean active; |
| public boolean working; |
| public boolean added; |
| public boolean removed; |
| |
| Stats(int _pid, int parentPid, boolean includeThreads) { |
| pid = _pid; |
| if (parentPid < 0) { |
| final File procDir = new File("/proc", Integer.toString(pid)); |
| uid = getUid(procDir.toString()); |
| statFile = new File(procDir, "stat").toString(); |
| cmdlineFile = new File(procDir, "cmdline").toString(); |
| threadsDir = (new File(procDir, "task")).toString(); |
| if (includeThreads) { |
| threadStats = new ArrayList<Stats>(); |
| workingThreads = new ArrayList<Stats>(); |
| } else { |
| threadStats = null; |
| workingThreads = null; |
| } |
| } else { |
| final File procDir = new File("/proc", Integer.toString( |
| parentPid)); |
| final File taskDir = new File( |
| new File(procDir, "task"), Integer.toString(pid)); |
| uid = getUid(taskDir.toString()); |
| statFile = new File(taskDir, "stat").toString(); |
| cmdlineFile = null; |
| threadsDir = null; |
| threadStats = null; |
| workingThreads = null; |
| } |
| } |
| |
| private static int getUid(String path) { |
| try { |
| return Os.stat(path).st_uid; |
| } catch (ErrnoException e) { |
| Slog.w(TAG, "Failed to stat(" + path + "): " + e); |
| return -1; |
| } |
| } |
| } |
| |
| private final static Comparator<Stats> sLoadComparator = new Comparator<Stats>() { |
| public final int |
| compare(Stats sta, Stats stb) { |
| int ta = sta.rel_utime + sta.rel_stime; |
| int tb = stb.rel_utime + stb.rel_stime; |
| if (ta != tb) { |
| return ta > tb ? -1 : 1; |
| } |
| if (sta.added != stb.added) { |
| return sta.added ? -1 : 1; |
| } |
| if (sta.removed != stb.removed) { |
| return sta.added ? -1 : 1; |
| } |
| return 0; |
| } |
| }; |
| |
| |
| @UnsupportedAppUsage |
| public ProcessCpuTracker(boolean includeThreads) { |
| mIncludeThreads = includeThreads; |
| long jiffyHz = Os.sysconf(OsConstants._SC_CLK_TCK); |
| mJiffyMillis = 1000/jiffyHz; |
| } |
| |
| public void onLoadChanged(float load1, float load5, float load15) { |
| } |
| |
| public int onMeasureProcessName(String name) { |
| return 0; |
| } |
| |
| public void init() { |
| if (DEBUG) Slog.v(TAG, "Init: " + this); |
| mFirst = true; |
| update(); |
| } |
| |
| @UnsupportedAppUsage |
| public void update() { |
| if (DEBUG) Slog.v(TAG, "Update: " + this); |
| |
| final long nowUptime = SystemClock.uptimeMillis(); |
| final long nowRealtime = SystemClock.elapsedRealtime(); |
| final long nowWallTime = System.currentTimeMillis(); |
| |
| final long[] sysCpu = mSystemCpuData; |
| if (Process.readProcFile("/proc/stat", SYSTEM_CPU_FORMAT, |
| null, sysCpu, null)) { |
| // Total user time is user + nice time. |
| final long usertime = (sysCpu[0]+sysCpu[1]) * mJiffyMillis; |
| // Total system time is simply system time. |
| final long systemtime = sysCpu[2] * mJiffyMillis; |
| // Total idle time is simply idle time. |
| final long idletime = sysCpu[3] * mJiffyMillis; |
| // Total irq time is iowait + irq + softirq time. |
| final long iowaittime = sysCpu[4] * mJiffyMillis; |
| final long irqtime = sysCpu[5] * mJiffyMillis; |
| final long softirqtime = sysCpu[6] * mJiffyMillis; |
| |
| // This code is trying to avoid issues with idle time going backwards, |
| // but currently it gets into situations where it triggers most of the time. :( |
| if (true || (usertime >= mBaseUserTime && systemtime >= mBaseSystemTime |
| && iowaittime >= mBaseIoWaitTime && irqtime >= mBaseIrqTime |
| && softirqtime >= mBaseSoftIrqTime && idletime >= mBaseIdleTime)) { |
| mRelUserTime = (int)(usertime - mBaseUserTime); |
| mRelSystemTime = (int)(systemtime - mBaseSystemTime); |
| mRelIoWaitTime = (int)(iowaittime - mBaseIoWaitTime); |
| mRelIrqTime = (int)(irqtime - mBaseIrqTime); |
| mRelSoftIrqTime = (int)(softirqtime - mBaseSoftIrqTime); |
| mRelIdleTime = (int)(idletime - mBaseIdleTime); |
| mRelStatsAreGood = true; |
| |
| if (DEBUG) { |
| Slog.i("Load", "Total U:" + (sysCpu[0]*mJiffyMillis) |
| + " N:" + (sysCpu[1]*mJiffyMillis) |
| + " S:" + (sysCpu[2]*mJiffyMillis) + " I:" + (sysCpu[3]*mJiffyMillis) |
| + " W:" + (sysCpu[4]*mJiffyMillis) + " Q:" + (sysCpu[5]*mJiffyMillis) |
| + " O:" + (sysCpu[6]*mJiffyMillis)); |
| Slog.i("Load", "Rel U:" + mRelUserTime + " S:" + mRelSystemTime |
| + " I:" + mRelIdleTime + " Q:" + mRelIrqTime); |
| } |
| |
| mBaseUserTime = usertime; |
| mBaseSystemTime = systemtime; |
| mBaseIoWaitTime = iowaittime; |
| mBaseIrqTime = irqtime; |
| mBaseSoftIrqTime = softirqtime; |
| mBaseIdleTime = idletime; |
| |
| } else { |
| mRelUserTime = 0; |
| mRelSystemTime = 0; |
| mRelIoWaitTime = 0; |
| mRelIrqTime = 0; |
| mRelSoftIrqTime = 0; |
| mRelIdleTime = 0; |
| mRelStatsAreGood = false; |
| Slog.w(TAG, "/proc/stats has gone backwards; skipping CPU update"); |
| return; |
| } |
| } |
| |
| mLastSampleTime = mCurrentSampleTime; |
| mCurrentSampleTime = nowUptime; |
| mLastSampleRealTime = mCurrentSampleRealTime; |
| mCurrentSampleRealTime = nowRealtime; |
| mLastSampleWallTime = mCurrentSampleWallTime; |
| mCurrentSampleWallTime = nowWallTime; |
| |
| final StrictMode.ThreadPolicy savedPolicy = StrictMode.allowThreadDiskReads(); |
| try { |
| mCurPids = collectStats("/proc", -1, mFirst, mCurPids, mProcStats); |
| } finally { |
| StrictMode.setThreadPolicy(savedPolicy); |
| } |
| |
| final float[] loadAverages = mLoadAverageData; |
| if (Process.readProcFile("/proc/loadavg", LOAD_AVERAGE_FORMAT, |
| null, null, loadAverages)) { |
| float load1 = loadAverages[0]; |
| float load5 = loadAverages[1]; |
| float load15 = loadAverages[2]; |
| if (load1 != mLoad1 || load5 != mLoad5 || load15 != mLoad15) { |
| mLoad1 = load1; |
| mLoad5 = load5; |
| mLoad15 = load15; |
| onLoadChanged(load1, load5, load15); |
| } |
| } |
| |
| if (DEBUG) Slog.i(TAG, "*** TIME TO COLLECT STATS: " |
| + (SystemClock.uptimeMillis()-mCurrentSampleTime)); |
| |
| mWorkingProcsSorted = false; |
| mFirst = false; |
| } |
| |
| private int[] collectStats(String statsFile, int parentPid, boolean first, |
| int[] curPids, ArrayList<Stats> allProcs) { |
| |
| int[] pids = Process.getPids(statsFile, curPids); |
| int NP = (pids == null) ? 0 : pids.length; |
| int NS = allProcs.size(); |
| int curStatsIndex = 0; |
| for (int i=0; i<NP; i++) { |
| int pid = pids[i]; |
| if (pid < 0) { |
| NP = pid; |
| break; |
| } |
| Stats st = curStatsIndex < NS ? allProcs.get(curStatsIndex) : null; |
| |
| if (st != null && st.pid == pid) { |
| // Update an existing process... |
| st.added = false; |
| st.working = false; |
| curStatsIndex++; |
| if (DEBUG) Slog.v(TAG, "Existing " |
| + (parentPid < 0 ? "process" : "thread") |
| + " pid " + pid + ": " + st); |
| |
| if (st.interesting) { |
| final long uptime = SystemClock.uptimeMillis(); |
| |
| final long[] procStats = mProcessStatsData; |
| if (!Process.readProcFile(st.statFile.toString(), |
| PROCESS_STATS_FORMAT, null, procStats, null)) { |
| continue; |
| } |
| |
| final long minfaults = procStats[PROCESS_STAT_MINOR_FAULTS]; |
| final long majfaults = procStats[PROCESS_STAT_MAJOR_FAULTS]; |
| final long utime = procStats[PROCESS_STAT_UTIME] * mJiffyMillis; |
| final long stime = procStats[PROCESS_STAT_STIME] * mJiffyMillis; |
| |
| if (utime == st.base_utime && stime == st.base_stime) { |
| st.rel_utime = 0; |
| st.rel_stime = 0; |
| st.rel_minfaults = 0; |
| st.rel_majfaults = 0; |
| if (st.active) { |
| st.active = false; |
| } |
| continue; |
| } |
| |
| if (!st.active) { |
| st.active = true; |
| } |
| |
| if (parentPid < 0) { |
| getName(st, st.cmdlineFile); |
| if (st.threadStats != null) { |
| mCurThreadPids = collectStats(st.threadsDir, pid, false, |
| mCurThreadPids, st.threadStats); |
| } |
| } |
| |
| if (DEBUG) Slog.v("Load", "Stats changed " + st.name + " pid=" + st.pid |
| + " utime=" + utime + "-" + st.base_utime |
| + " stime=" + stime + "-" + st.base_stime |
| + " minfaults=" + minfaults + "-" + st.base_minfaults |
| + " majfaults=" + majfaults + "-" + st.base_majfaults); |
| |
| st.rel_uptime = uptime - st.base_uptime; |
| st.base_uptime = uptime; |
| st.rel_utime = (int)(utime - st.base_utime); |
| st.rel_stime = (int)(stime - st.base_stime); |
| st.base_utime = utime; |
| st.base_stime = stime; |
| st.rel_minfaults = (int)(minfaults - st.base_minfaults); |
| st.rel_majfaults = (int)(majfaults - st.base_majfaults); |
| st.base_minfaults = minfaults; |
| st.base_majfaults = majfaults; |
| st.working = true; |
| } |
| |
| continue; |
| } |
| |
| if (st == null || st.pid > pid) { |
| // We have a new process! |
| st = new Stats(pid, parentPid, mIncludeThreads); |
| allProcs.add(curStatsIndex, st); |
| curStatsIndex++; |
| NS++; |
| if (DEBUG) Slog.v(TAG, "New " |
| + (parentPid < 0 ? "process" : "thread") |
| + " pid " + pid + ": " + st); |
| |
| final String[] procStatsString = mProcessFullStatsStringData; |
| final long[] procStats = mProcessFullStatsData; |
| st.base_uptime = SystemClock.uptimeMillis(); |
| String path = st.statFile.toString(); |
| //Slog.d(TAG, "Reading proc file: " + path); |
| if (Process.readProcFile(path, PROCESS_FULL_STATS_FORMAT, procStatsString, |
| procStats, null)) { |
| // This is a possible way to filter out processes that |
| // are actually kernel threads... do we want to? Some |
| // of them do use CPU, but there can be a *lot* that are |
| // not doing anything. |
| st.vsize = procStats[PROCESS_FULL_STAT_VSIZE]; |
| if (true || procStats[PROCESS_FULL_STAT_VSIZE] != 0) { |
| st.interesting = true; |
| st.baseName = procStatsString[0]; |
| st.base_minfaults = procStats[PROCESS_FULL_STAT_MINOR_FAULTS]; |
| st.base_majfaults = procStats[PROCESS_FULL_STAT_MAJOR_FAULTS]; |
| st.base_utime = procStats[PROCESS_FULL_STAT_UTIME] * mJiffyMillis; |
| st.base_stime = procStats[PROCESS_FULL_STAT_STIME] * mJiffyMillis; |
| } else { |
| Slog.i(TAG, "Skipping kernel process pid " + pid |
| + " name " + procStatsString[0]); |
| st.baseName = procStatsString[0]; |
| } |
| } else { |
| Slog.w(TAG, "Skipping unknown process pid " + pid); |
| st.baseName = "<unknown>"; |
| st.base_utime = st.base_stime = 0; |
| st.base_minfaults = st.base_majfaults = 0; |
| } |
| |
| if (parentPid < 0) { |
| getName(st, st.cmdlineFile); |
| if (st.threadStats != null) { |
| mCurThreadPids = collectStats(st.threadsDir, pid, true, |
| mCurThreadPids, st.threadStats); |
| } |
| } else if (st.interesting) { |
| st.name = st.baseName; |
| st.nameWidth = onMeasureProcessName(st.name); |
| } |
| |
| if (DEBUG) Slog.v("Load", "Stats added " + st.name + " pid=" + st.pid |
| + " utime=" + st.base_utime + " stime=" + st.base_stime |
| + " minfaults=" + st.base_minfaults + " majfaults=" + st.base_majfaults); |
| |
| st.rel_utime = 0; |
| st.rel_stime = 0; |
| st.rel_minfaults = 0; |
| st.rel_majfaults = 0; |
| st.added = true; |
| if (!first && st.interesting) { |
| st.working = true; |
| } |
| continue; |
| } |
| |
| // This process has gone away! |
| st.rel_utime = 0; |
| st.rel_stime = 0; |
| st.rel_minfaults = 0; |
| st.rel_majfaults = 0; |
| st.removed = true; |
| st.working = true; |
| allProcs.remove(curStatsIndex); |
| NS--; |
| if (DEBUG) Slog.v(TAG, "Removed " |
| + (parentPid < 0 ? "process" : "thread") |
| + " pid " + pid + ": " + st); |
| // Decrement the loop counter so that we process the current pid |
| // again the next time through the loop. |
| i--; |
| continue; |
| } |
| |
| while (curStatsIndex < NS) { |
| // This process has gone away! |
| final Stats st = allProcs.get(curStatsIndex); |
| st.rel_utime = 0; |
| st.rel_stime = 0; |
| st.rel_minfaults = 0; |
| st.rel_majfaults = 0; |
| st.removed = true; |
| st.working = true; |
| allProcs.remove(curStatsIndex); |
| NS--; |
| if (localLOGV) Slog.v(TAG, "Removed pid " + st.pid + ": " + st); |
| } |
| |
| return pids; |
| } |
| |
| /** |
| * Returns the total time (in milliseconds) spent executing in |
| * both user and system code. Safe to call without lock held. |
| */ |
| public long getCpuTimeForPid(int pid) { |
| synchronized (mSinglePidStatsData) { |
| final String statFile = "/proc/" + pid + "/stat"; |
| final long[] statsData = mSinglePidStatsData; |
| if (Process.readProcFile(statFile, PROCESS_STATS_FORMAT, |
| null, statsData, null)) { |
| long time = statsData[PROCESS_STAT_UTIME] |
| + statsData[PROCESS_STAT_STIME]; |
| return time * mJiffyMillis; |
| } |
| return 0; |
| } |
| } |
| |
| /** |
| * @return time in milliseconds. |
| */ |
| final public int getLastUserTime() { |
| return mRelUserTime; |
| } |
| |
| /** |
| * @return time in milliseconds. |
| */ |
| final public int getLastSystemTime() { |
| return mRelSystemTime; |
| } |
| |
| /** |
| * @return time in milliseconds. |
| */ |
| final public int getLastIoWaitTime() { |
| return mRelIoWaitTime; |
| } |
| |
| /** |
| * @return time in milliseconds. |
| */ |
| final public int getLastIrqTime() { |
| return mRelIrqTime; |
| } |
| |
| /** |
| * @return time in milliseconds. |
| */ |
| final public int getLastSoftIrqTime() { |
| return mRelSoftIrqTime; |
| } |
| |
| /** |
| * @return time in milliseconds. |
| */ |
| final public int getLastIdleTime() { |
| return mRelIdleTime; |
| } |
| |
| final public boolean hasGoodLastStats() { |
| return mRelStatsAreGood; |
| } |
| |
| final public float getTotalCpuPercent() { |
| int denom = mRelUserTime+mRelSystemTime+mRelIrqTime+mRelIdleTime; |
| if (denom <= 0) { |
| return 0; |
| } |
| return ((float)(mRelUserTime+mRelSystemTime+mRelIrqTime)*100) / denom; |
| } |
| |
| final void buildWorkingProcs() { |
| if (!mWorkingProcsSorted) { |
| mWorkingProcs.clear(); |
| final int N = mProcStats.size(); |
| for (int i=0; i<N; i++) { |
| Stats stats = mProcStats.get(i); |
| if (stats.working) { |
| mWorkingProcs.add(stats); |
| if (stats.threadStats != null && stats.threadStats.size() > 1) { |
| stats.workingThreads.clear(); |
| final int M = stats.threadStats.size(); |
| for (int j=0; j<M; j++) { |
| Stats tstats = stats.threadStats.get(j); |
| if (tstats.working) { |
| stats.workingThreads.add(tstats); |
| } |
| } |
| Collections.sort(stats.workingThreads, sLoadComparator); |
| } |
| } |
| } |
| Collections.sort(mWorkingProcs, sLoadComparator); |
| mWorkingProcsSorted = true; |
| } |
| } |
| |
| final public int countStats() { |
| return mProcStats.size(); |
| } |
| |
| final public Stats getStats(int index) { |
| return mProcStats.get(index); |
| } |
| |
| final public List<Stats> getStats(FilterStats filter) { |
| final ArrayList<Stats> statses = new ArrayList<>(mProcStats.size()); |
| final int N = mProcStats.size(); |
| for (int p = 0; p < N; p++) { |
| Stats stats = mProcStats.get(p); |
| if (filter.needed(stats)) { |
| statses.add(stats); |
| } |
| } |
| return statses; |
| } |
| |
| @UnsupportedAppUsage |
| final public int countWorkingStats() { |
| buildWorkingProcs(); |
| return mWorkingProcs.size(); |
| } |
| |
| @UnsupportedAppUsage |
| final public Stats getWorkingStats(int index) { |
| return mWorkingProcs.get(index); |
| } |
| |
| final public String printCurrentLoad() { |
| StringWriter sw = new StringWriter(); |
| PrintWriter pw = new FastPrintWriter(sw, false, 128); |
| pw.print("Load: "); |
| pw.print(mLoad1); |
| pw.print(" / "); |
| pw.print(mLoad5); |
| pw.print(" / "); |
| pw.println(mLoad15); |
| pw.flush(); |
| return sw.toString(); |
| } |
| |
| final public String printCurrentState(long now) { |
| final SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.SSS"); |
| |
| buildWorkingProcs(); |
| |
| StringWriter sw = new StringWriter(); |
| PrintWriter pw = new FastPrintWriter(sw, false, 1024); |
| |
| pw.print("CPU usage from "); |
| if (now > mLastSampleTime) { |
| pw.print(now-mLastSampleTime); |
| pw.print("ms to "); |
| pw.print(now-mCurrentSampleTime); |
| pw.print("ms ago"); |
| } else { |
| pw.print(mLastSampleTime-now); |
| pw.print("ms to "); |
| pw.print(mCurrentSampleTime-now); |
| pw.print("ms later"); |
| } |
| pw.print(" ("); |
| pw.print(sdf.format(new Date(mLastSampleWallTime))); |
| pw.print(" to "); |
| pw.print(sdf.format(new Date(mCurrentSampleWallTime))); |
| pw.print(")"); |
| |
| long sampleTime = mCurrentSampleTime - mLastSampleTime; |
| long sampleRealTime = mCurrentSampleRealTime - mLastSampleRealTime; |
| long percAwake = sampleRealTime > 0 ? ((sampleTime*100) / sampleRealTime) : 0; |
| if (percAwake != 100) { |
| pw.print(" with "); |
| pw.print(percAwake); |
| pw.print("% awake"); |
| } |
| pw.println(":"); |
| |
| final int totalTime = mRelUserTime + mRelSystemTime + mRelIoWaitTime |
| + mRelIrqTime + mRelSoftIrqTime + mRelIdleTime; |
| |
| if (DEBUG) Slog.i(TAG, "totalTime " + totalTime + " over sample time " |
| + (mCurrentSampleTime-mLastSampleTime)); |
| |
| int N = mWorkingProcs.size(); |
| for (int i=0; i<N; i++) { |
| Stats st = mWorkingProcs.get(i); |
| printProcessCPU(pw, st.added ? " +" : (st.removed ? " -": " "), |
| st.pid, st.name, (int)st.rel_uptime, |
| st.rel_utime, st.rel_stime, 0, 0, 0, st.rel_minfaults, st.rel_majfaults); |
| if (!st.removed && st.workingThreads != null) { |
| int M = st.workingThreads.size(); |
| for (int j=0; j<M; j++) { |
| Stats tst = st.workingThreads.get(j); |
| printProcessCPU(pw, |
| tst.added ? " +" : (tst.removed ? " -": " "), |
| tst.pid, tst.name, (int)st.rel_uptime, |
| tst.rel_utime, tst.rel_stime, 0, 0, 0, 0, 0); |
| } |
| } |
| } |
| |
| printProcessCPU(pw, "", -1, "TOTAL", totalTime, mRelUserTime, mRelSystemTime, |
| mRelIoWaitTime, mRelIrqTime, mRelSoftIrqTime, 0, 0); |
| |
| pw.flush(); |
| return sw.toString(); |
| } |
| |
| private void printRatio(PrintWriter pw, long numerator, long denominator) { |
| long thousands = (numerator*1000)/denominator; |
| long hundreds = thousands/10; |
| pw.print(hundreds); |
| if (hundreds < 10) { |
| long remainder = thousands - (hundreds*10); |
| if (remainder != 0) { |
| pw.print('.'); |
| pw.print(remainder); |
| } |
| } |
| } |
| |
| private void printProcessCPU(PrintWriter pw, String prefix, int pid, String label, |
| int totalTime, int user, int system, int iowait, int irq, int softIrq, |
| int minFaults, int majFaults) { |
| pw.print(prefix); |
| if (totalTime == 0) totalTime = 1; |
| printRatio(pw, user+system+iowait+irq+softIrq, totalTime); |
| pw.print("% "); |
| if (pid >= 0) { |
| pw.print(pid); |
| pw.print("/"); |
| } |
| pw.print(label); |
| pw.print(": "); |
| printRatio(pw, user, totalTime); |
| pw.print("% user + "); |
| printRatio(pw, system, totalTime); |
| pw.print("% kernel"); |
| if (iowait > 0) { |
| pw.print(" + "); |
| printRatio(pw, iowait, totalTime); |
| pw.print("% iowait"); |
| } |
| if (irq > 0) { |
| pw.print(" + "); |
| printRatio(pw, irq, totalTime); |
| pw.print("% irq"); |
| } |
| if (softIrq > 0) { |
| pw.print(" + "); |
| printRatio(pw, softIrq, totalTime); |
| pw.print("% softirq"); |
| } |
| if (minFaults > 0 || majFaults > 0) { |
| pw.print(" / faults:"); |
| if (minFaults > 0) { |
| pw.print(" "); |
| pw.print(minFaults); |
| pw.print(" minor"); |
| } |
| if (majFaults > 0) { |
| pw.print(" "); |
| pw.print(majFaults); |
| pw.print(" major"); |
| } |
| } |
| pw.println(); |
| } |
| |
| private void getName(Stats st, String cmdlineFile) { |
| String newName = st.name; |
| if (st.name == null || st.name.equals("app_process") |
| || st.name.equals("<pre-initialized>")) { |
| String cmdName = ProcStatsUtil.readTerminatedProcFile(cmdlineFile, (byte) '\0'); |
| if (cmdName != null && cmdName.length() > 1) { |
| newName = cmdName; |
| int i = newName.lastIndexOf("/"); |
| if (i > 0 && i < newName.length()-1) { |
| newName = newName.substring(i+1); |
| } |
| } |
| if (newName == null) { |
| newName = st.baseName; |
| } |
| } |
| if (st.name == null || !newName.equals(st.name)) { |
| st.name = newName; |
| st.nameWidth = onMeasureProcessName(st.name); |
| } |
| } |
| } |
