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/*
* Copyright (C) 2018 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.util;
import android.os.SystemClock;
import android.util.SparseBooleanArray;
import android.util.SparseLongArray;
import java.io.PrintWriter;
public class ProviderAccessStats {
private final Object mLock = new Object();
private final long mStartUptime = SystemClock.uptimeMillis();
private final SparseBooleanArray mAllCallingUids = new SparseBooleanArray();
private final SparseLongArray mQueryStats = new SparseLongArray(16);
private final SparseLongArray mBatchStats = new SparseLongArray(0);
private final SparseLongArray mInsertStats = new SparseLongArray(0);
private final SparseLongArray mUpdateStats = new SparseLongArray(0);
private final SparseLongArray mDeleteStats = new SparseLongArray(0);
private final SparseLongArray mInsertInBatchStats = new SparseLongArray(0);
private final SparseLongArray mUpdateInBatchStats = new SparseLongArray(0);
private final SparseLongArray mDeleteInBatchStats = new SparseLongArray(0);
private final SparseLongArray mOperationDurationMillis = new SparseLongArray(16);
private static class PerThreadData {
public int nestCount;
public long startUptimeMillis;
}
private final ThreadLocal<PerThreadData> mThreadLocal =
ThreadLocal.withInitial(() -> new PerThreadData());
private void incrementStats(int callingUid, SparseLongArray stats) {
synchronized (mLock) {
stats.put(callingUid, stats.get(callingUid) + 1);
mAllCallingUids.put(callingUid, true);
}
final PerThreadData data = mThreadLocal.get();
data.nestCount++;
if (data.nestCount == 1) {
data.startUptimeMillis = SystemClock.uptimeMillis();
}
}
private void incrementStats(int callingUid, boolean inBatch,
SparseLongArray statsNonBatch, SparseLongArray statsInBatch) {
incrementStats(callingUid, inBatch ? statsInBatch : statsNonBatch);
}
public final void incrementInsertStats(int callingUid, boolean inBatch) {
incrementStats(callingUid, inBatch, mInsertStats, mInsertInBatchStats);
}
public final void incrementUpdateStats(int callingUid, boolean inBatch) {
incrementStats(callingUid, inBatch, mUpdateStats, mUpdateInBatchStats);
}
public final void incrementDeleteStats(int callingUid, boolean inBatch) {
incrementStats(callingUid, inBatch, mDeleteStats, mDeleteInBatchStats);
}
public final void incrementQueryStats(int callingUid) {
incrementStats(callingUid, mQueryStats);
}
public final void incrementBatchStats(int callingUid) {
incrementStats(callingUid, mBatchStats);
}
public void finishOperation(int callingUid) {
final PerThreadData data = mThreadLocal.get();
data.nestCount--;
if (data.nestCount == 0) {
// Because we only have millisecond granularity, let's always attribute at least 1ms
// for each operation.
final long duration = Math.max(1, SystemClock.uptimeMillis() - data.startUptimeMillis);
synchronized (mLock) {
mOperationDurationMillis.put(callingUid,
mOperationDurationMillis.get(callingUid) + duration);
}
}
}
public void dump(PrintWriter pw, String prefix) {
synchronized (mLock) {
pw.print(" Process uptime: ");
pw.print((SystemClock.uptimeMillis() - mStartUptime) / (60 * 1000));
pw.println(" minutes");
pw.println();
pw.print(prefix);
pw.println("Client activities:");
pw.print(prefix);
pw.println(" UID Query Insert Update Delete Batch Insert Update Delete"
+ " Sec");
for (int i = 0; i < mAllCallingUids.size(); i++) {
final int uid = mAllCallingUids.keyAt(i);
pw.print(prefix);
pw.println(String.format(
" %-9d %6d %6d %6d %6d %6d %6d %6d %6d %12.3f",
uid,
mQueryStats.get(uid),
mInsertStats.get(uid),
mUpdateStats.get(uid),
mDeleteStats.get(uid),
mBatchStats.get(uid),
mInsertInBatchStats.get(uid),
mUpdateInBatchStats.get(uid),
mDeleteInBatchStats.get(uid),
(mOperationDurationMillis.get(uid) / 1000.0)
));
}
pw.println();
}
}
}
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