LineageOS/android_packages_modules_Connectivity
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ConnectivityService: improve wakelock logging

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This patch adds the following wakelock related counters to connectivity
service dumps included in bug reports:
 - total number of wakelok acquisitions and releases
 - total cumulative wakelock duration
 - longest time the lock was held

Bug: 65085354
Test: runtest frameworks-net, also manually dumped connectivity service
      and check new logging

Merged-In: I8f67750c2eea73abf3d44f7f6df484427a8ea3f9
Merged-In: I93c0eb7c8add966378647400e11e33765d952345
Merged-In: Iabe99993001e069b8a8077533bca1fa7fb2f59ba

(cherry picked from commit 88f49acd03)

Change-Id: I4d6bb43110916b440819813b478523546ac5570e
This commit is contained in:
Hugo Benichi
2017-09-05 13:25:07 +09:00
parent 4112ecb7a6
commit d1cb22f8c7
1 changed files with 19 additions and 0 deletions
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19
services/core/java/com/android/server/ConnectivityService.java
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@@ -458,6 +458,11 @@ public class ConnectivityService extends IConnectivityManager.Stub
private static final int MAX_WAKELOCK_LOGS = 20;
private final LocalLog mWakelockLogs = new LocalLog(MAX_WAKELOCK_LOGS);
private int mTotalWakelockAcquisitions = 0;
private int mTotalWakelockReleases = 0;
private long mTotalWakelockDurationMs = 0;
private long mMaxWakelockDurationMs = 0;
private long mLastWakeLockAcquireTimestamp = 0;
// Array of <Network,ReadOnlyLocalLogs> tracking network validation and results
private static final int MAX_VALIDATION_LOGS = 10;
@@ -1959,6 +1964,14 @@ public class ConnectivityService extends IConnectivityManager.Stub
pw.println();
pw.println("NetTransition WakeLock activity (most recent first):");
pw.increaseIndent();
pw.println("total acquisitions: " + mTotalWakelockAcquisitions);
pw.println("total releases: " + mTotalWakelockReleases);
pw.println("cumulative duration: " + (mTotalWakelockDurationMs / 1000) + "s");
pw.println("longest duration: " + (mMaxWakelockDurationMs / 1000) + "s");
if (mTotalWakelockAcquisitions > mTotalWakelockReleases) {
long duration = SystemClock.elapsedRealtime() - mLastWakeLockAcquireTimestamp;
pw.println("currently holding WakeLock for: " + (duration / 1000) + "s");
}
mWakelockLogs.reverseDump(fd, pw, args);
pw.decreaseIndent();
}
@@ -3012,6 +3025,8 @@ public class ConnectivityService extends IConnectivityManager.Stub
return;
}
mNetTransitionWakeLock.acquire();
mLastWakeLockAcquireTimestamp = SystemClock.elapsedRealtime();
mTotalWakelockAcquisitions++;
}
mWakelockLogs.log("ACQUIRE for " + forWhom);
Message msg = mHandler.obtainMessage(EVENT_EXPIRE_NET_TRANSITION_WAKELOCK);
@@ -3044,6 +3059,10 @@ public class ConnectivityService extends IConnectivityManager.Stub
return;
}
mNetTransitionWakeLock.release();
long lockDuration = SystemClock.elapsedRealtime() - mLastWakeLockAcquireTimestamp;
mTotalWakelockDurationMs += lockDuration;
mMaxWakelockDurationMs = Math.max(mMaxWakelockDurationMs, lockDuration);
mTotalWakelockReleases++;
}
mWakelockLogs.log(String.format("RELEASE (%s)", event));
}