Add some detailed data as part of battery history.

Every time the battery level changes, a new extended
detailed use data structure is written to the history.
This currently only contains delta CPU use since the
last detailed entry (total CPU and to three uids), but
it gives us the infrastructure for adding more detailed
data in the future.

A detail entry for regular history looks like:

     Details: cpu=15730u+2307s (u0a57=11312u+502s, 1000=2344u+701s, 0=473u+991s)
              /proc/stat=15377 usr, 1797 sys, 197 io, 0 irq, 8 sirq, 23103 idle (42.9% of 6m 44s 820ms)

u is user-space cpu time, s is system/kernel time.

The equivalent check-in output is:

9,h,0,Dcpu=15730:2307/10057:11312:502/1000:2344:701/0:473:991
9,h,0,Dpst=15377,1797,197,0,8,23103

Also add a new "unplug" command to the battery service,
to easily put it into a state where it always considers
the device to be running on battery.

Change-Id: Ic76d966f11e592b9dd671879977bf999ebc11eef

1 files changed, 188 insertions, 0 deletions

diff --git a/core/java/android/os/BatteryStats.java b/core/java/android/os/BatteryStats.java
index cd45cfb..4dadda2 100644
--- a/core/java/android/os/BatteryStats.java
+++ b/core/java/android/os/BatteryStats.java
@@ -592,6 +592,86 @@ public abstract class BatteryStats implements Parcelable {
         }
     }
 
+    /**
+     * Optional detailed information that can go into a history step.  This is typically
+     * generated each time the battery level changes.
+     */
+    public final static class HistoryStepDetails {
+        // Time (in 1/100 second) spent in user space and the kernel since the last step.
+        public int userTime;
+        public int systemTime;
+
+        // Top three apps using CPU in the last step, with times in 1/100 second.
+        public int appCpuUid1;
+        public int appCpuUTime1;
+        public int appCpuSTime1;
+        public int appCpuUid2;
+        public int appCpuUTime2;
+        public int appCpuSTime2;
+        public int appCpuUid3;
+        public int appCpuUTime3;
+        public int appCpuSTime3;
+
+        // Information from /proc/stat
+        public int statUserTime;
+        public int statSystemTime;
+        public int statIOWaitTime;
+        public int statIrqTime;
+        public int statSoftIrqTime;
+        public int statIdlTime;
+
+        public HistoryStepDetails() {
+            clear();
+        }
+
+        public void clear() {
+            userTime = systemTime = 0;
+            appCpuUid1 = appCpuUid2 = appCpuUid3 = -1;
+            appCpuUTime1 = appCpuSTime1 = appCpuUTime2 = appCpuSTime2
+                    = appCpuUTime3 = appCpuSTime3 = 0;
+        }
+
+        public void writeToParcel(Parcel out) {
+            out.writeInt(userTime);
+            out.writeInt(systemTime);
+            out.writeInt(appCpuUid1);
+            out.writeInt(appCpuUTime1);
+            out.writeInt(appCpuSTime1);
+            out.writeInt(appCpuUid2);
+            out.writeInt(appCpuUTime2);
+            out.writeInt(appCpuSTime2);
+            out.writeInt(appCpuUid3);
+            out.writeInt(appCpuUTime3);
+            out.writeInt(appCpuSTime3);
+            out.writeInt(statUserTime);
+            out.writeInt(statSystemTime);
+            out.writeInt(statIOWaitTime);
+            out.writeInt(statIrqTime);
+            out.writeInt(statSoftIrqTime);
+            out.writeInt(statIdlTime);
+        }
+
+        public void readFromParcel(Parcel in) {
+            userTime = in.readInt();
+            systemTime = in.readInt();
+            appCpuUid1 = in.readInt();
+            appCpuUTime1 = in.readInt();
+            appCpuSTime1 = in.readInt();
+            appCpuUid2 = in.readInt();
+            appCpuUTime2 = in.readInt();
+            appCpuSTime2 = in.readInt();
+            appCpuUid3 = in.readInt();
+            appCpuUTime3 = in.readInt();
+            appCpuSTime3 = in.readInt();
+            statUserTime = in.readInt();
+            statSystemTime = in.readInt();
+            statIOWaitTime = in.readInt();
+            statIrqTime = in.readInt();
+            statSoftIrqTime = in.readInt();
+            statIdlTime = in.readInt();
+        }
+    }
+
     public final static class HistoryItem implements Parcelable {
         public HistoryItem next;
 
@@ -687,6 +767,9 @@ public abstract class BatteryStats implements Parcelable {
         // Kernel wakeup reason at this point.
         public HistoryTag wakeReasonTag;
 
+        // Non-null when there is more detailed information at this step.
+        public HistoryStepDetails stepDetails;
+
         public static final int EVENT_FLAG_START = 0x8000;
         public static final int EVENT_FLAG_FINISH = 0x4000;
 
@@ -3692,10 +3775,115 @@ public abstract class BatteryStats implements Parcelable {
                     }
                 }
                 pw.println();
+                if (rec.stepDetails != null) {
+                    if (!checkin) {
+                        pw.print("                 Details: cpu=");
+                        pw.print(rec.stepDetails.userTime);
+                        pw.print("u+");
+                        pw.print(rec.stepDetails.systemTime);
+                        pw.print("s");
+                        if (rec.stepDetails.appCpuUid1 >= 0) {
+                            pw.print(" (");
+                            printStepCpuUidDetails(pw, rec.stepDetails.appCpuUid1,
+                                    rec.stepDetails.appCpuUTime1, rec.stepDetails.appCpuSTime1);
+                            if (rec.stepDetails.appCpuUid2 >= 0) {
+                                pw.print(", ");
+                                printStepCpuUidDetails(pw, rec.stepDetails.appCpuUid2,
+                                        rec.stepDetails.appCpuUTime2, rec.stepDetails.appCpuSTime2);
+                            }
+                            if (rec.stepDetails.appCpuUid3 >= 0) {
+                                pw.print(", ");
+                                printStepCpuUidDetails(pw, rec.stepDetails.appCpuUid3,
+                                        rec.stepDetails.appCpuUTime3, rec.stepDetails.appCpuSTime3);
+                            }
+                            pw.print(')');
+                        }
+                        pw.println();
+                        pw.print("                          /proc/stat=");
+                        pw.print(rec.stepDetails.statUserTime);
+                        pw.print(" usr, ");
+                        pw.print(rec.stepDetails.statSystemTime);
+                        pw.print(" sys, ");
+                        pw.print(rec.stepDetails.statIOWaitTime);
+                        pw.print(" io, ");
+                        pw.print(rec.stepDetails.statIrqTime);
+                        pw.print(" irq, ");
+                        pw.print(rec.stepDetails.statSoftIrqTime);
+                        pw.print(" sirq, ");
+                        pw.print(rec.stepDetails.statIdlTime);
+                        pw.print(" idle");
+                        int totalRun = rec.stepDetails.statUserTime + rec.stepDetails.statSystemTime
+                                + rec.stepDetails.statIOWaitTime + rec.stepDetails.statIrqTime
+                                + rec.stepDetails.statSoftIrqTime;
+                        int total = totalRun + rec.stepDetails.statIdlTime;
+                        if (total > 0) {
+                            pw.print(" (");
+                            float perc = ((float)totalRun) / ((float)total) * 100;
+                            pw.print(String.format("%.1f%%", perc));
+                            pw.print(" of ");
+                            StringBuilder sb = new StringBuilder(64);
+                            formatTimeMsNoSpace(sb, total*10);
+                            pw.print(sb);
+                            pw.print(")");
+                        }
+                        pw.println();
+                    } else {
+                        pw.print(BATTERY_STATS_CHECKIN_VERSION); pw.print(',');
+                        pw.print(HISTORY_DATA); pw.print(",0,Dcpu=");
+                        pw.print(rec.stepDetails.userTime);
+                        pw.print(":");
+                        pw.print(rec.stepDetails.systemTime);
+                        if (rec.stepDetails.appCpuUid1 >= 0) {
+                            printStepCpuUidCheckinDetails(pw, rec.stepDetails.appCpuUid1,
+                                    rec.stepDetails.appCpuUTime1, rec.stepDetails.appCpuSTime1);
+                            if (rec.stepDetails.appCpuUid2 >= 0) {
+                                printStepCpuUidCheckinDetails(pw, rec.stepDetails.appCpuUid2,
+                                        rec.stepDetails.appCpuUTime2, rec.stepDetails.appCpuSTime2);
+                            }
+                            if (rec.stepDetails.appCpuUid3 >= 0) {
+                                printStepCpuUidCheckinDetails(pw, rec.stepDetails.appCpuUid3,
+                                        rec.stepDetails.appCpuUTime3, rec.stepDetails.appCpuSTime3);
+                            }
+                        }
+                        pw.println();
+                        pw.print(BATTERY_STATS_CHECKIN_VERSION); pw.print(',');
+                        pw.print(HISTORY_DATA); pw.print(",0,Dpst=");
+                        pw.print(rec.stepDetails.statUserTime);
+                        pw.print(',');
+                        pw.print(rec.stepDetails.statSystemTime);
+                        pw.print(',');
+                        pw.print(rec.stepDetails.statIOWaitTime);
+                        pw.print(',');
+                        pw.print(rec.stepDetails.statIrqTime);
+                        pw.print(',');
+                        pw.print(rec.stepDetails.statSoftIrqTime);
+                        pw.print(',');
+                        pw.print(rec.stepDetails.statIdlTime);
+                        pw.println();
+                    }
+                }
                 oldState = rec.states;
                 oldState2 = rec.states2;
             }
         }
+
+        private void printStepCpuUidDetails(PrintWriter pw, int uid, int utime, int stime) {
+            UserHandle.formatUid(pw, uid);
+            pw.print("=");
+            pw.print(utime);
+            pw.print("u+");
+            pw.print(stime);
+            pw.print("s");
+        }
+
+        private void printStepCpuUidCheckinDetails(PrintWriter pw, int uid, int utime, int stime) {
+            pw.print('/');
+            pw.print(uid);
+            pw.print(":");
+            pw.print(utime);
+            pw.print(":");
+            pw.print(stime);
+        }
     }
 
     private void printSizeValue(PrintWriter pw, long size) {