Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 90142c95 authored by Dmitri Plotnikov's avatar Dmitri Plotnikov
Browse files

Adding a system property to log slow queries 

Change-Id: I4d139e222319f56169924e14aa967f07b233c00e
parent a4fe2aca

core/java/android/database/sqlite/SQLiteDatabase.java

+26 −9
Original line number Diff line number Diff line
@@ -22,10 +22,11 @@ import android.database.DatabaseUtils; 
import android.database.SQLException;

import android.os.Debug;

import android.os.SystemClock;

import android.os.SystemProperties;

import android.text.TextUtils;

import android.util.Config;

import android.util.Log;

import android.util.EventLog;

import android.util.Log;



import java.io.File;

import java.util.HashMap;
@@ -221,6 +222,10 @@ public class SQLiteDatabase extends SQLiteClosable { 
    // that logging is not enabled.

    /* package */ final boolean mLogStats;



    // System property that enables logging of slow queries. Specify the threshold in ms.

    private static final String LOG_SLOW_QUERIES_PROPERTY = "db.log.slow_query_threshold";

    private final int mSlowQueryThreshold;



    /**

     * @param closable

     */
@@ -1202,20 +1207,29 @@ public class SQLiteDatabase extends SQLiteClosable { 
            String editTable) {

        long timeStart = 0;



        if (Config.LOGV) {

        if (Config.LOGV || mSlowQueryThreshold != -1) {

            timeStart = System.currentTimeMillis();

        }



        SQLiteCursorDriver driver = new SQLiteDirectCursorDriver(this, sql, editTable);



        Cursor cursor = null;

        try {

            return driver.query(

            cursor = driver.query(

                    cursorFactory != null ? cursorFactory : mFactory,

                    selectionArgs);

        } finally {

            if (Config.LOGV) {

            if (Config.LOGV || mSlowQueryThreshold != -1) {



                // Force query execution

                if (cursor != null) {

                    cursor.moveToFirst();

                    cursor.moveToPosition(-1);

                }



                long duration = System.currentTimeMillis() - timeStart;



                if (Config.LOGV || duration >= mSlowQueryThreshold) {

                    Log.v(SQLiteCursor.TAG,

                          "query (" + duration + " ms): " + driver.toString() + ", args are "

                                  + (selectionArgs != null
@@ -1224,6 +1238,8 @@ public class SQLiteDatabase extends SQLiteClosable { 
                }

            }

        }

        return cursor;

    }



    /**

     * Runs the provided SQL and returns a cursor over the result set.
@@ -1671,6 +1687,7 @@ public class SQLiteDatabase extends SQLiteClosable { 
        mFlags = flags;

        mPath = path;

        mLogStats = "1".equals(android.os.SystemProperties.get("db.logstats"));

        mSlowQueryThreshold = SystemProperties.getInt(LOG_SLOW_QUERIES_PROPERTY, -1);



        mLeakedException = new IllegalStateException(path +

            " SQLiteDatabase created and never closed");