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Commit 6fe06606 authored by Greg Hackmann's avatar Greg Hackmann Committed by Gerrit Code Review
Browse files

Merge "Trace SQLite operations"

parents d16f5f12 e12350fa

core/java/android/database/sqlite/SQLiteConnection.java

+22 −0
Original line number Diff line number Diff line
@@ -26,6 +26,7 @@ import android.database.sqlite.SQLiteDebug.DbStats; 
import android.os.CancellationSignal;

import android.os.OperationCanceledException;

import android.os.ParcelFileDescriptor;

import android.os.Trace;

import android.util.Log;

import android.util.LruCache;

import android.util.Printer;
@@ -1330,6 +1331,10 @@ public final class SQLiteConnection implements CancellationSignal.OnCancelListen 
                    }

                }

                operation.mCookie = newOperationCookieLocked(index);

                if (Trace.isTagEnabled(Trace.TRACE_TAG_DATABASE)) {

                    Trace.asyncTraceBegin(Trace.TRACE_TAG_DATABASE, operation.getTraceMethodName(),

                            operation.mCookie);

                }

                mIndex = index;

                return operation.mCookie;

            }
@@ -1367,6 +1372,10 @@ public final class SQLiteConnection implements CancellationSignal.OnCancelListen 
        private boolean endOperationDeferLogLocked(int cookie) {

            final Operation operation = getOperationLocked(cookie);

            if (operation != null) {

                if (Trace.isTagEnabled(Trace.TRACE_TAG_DATABASE)) {

                    Trace.asyncTraceEnd(Trace.TRACE_TAG_DATABASE, operation.getTraceMethodName(),

                            operation.mCookie);

                }

                operation.mEndTime = System.currentTimeMillis();

                operation.mFinished = true;

                return SQLiteDebug.DEBUG_LOG_SLOW_QUERIES && SQLiteDebug.shouldLogSlowQuery(
@@ -1439,6 +1448,12 @@ public final class SQLiteConnection implements CancellationSignal.OnCancelListen 
    }



    private static final class Operation {

        // Trim all SQL statements to 256 characters inside the trace marker.

        // This limit gives plenty of context while leaving space for other

        // entries in the trace buffer (and ensures atrace doesn't truncate the

        // marker for us, potentially losing metadata in the process).

        private static final int MAX_TRACE_METHOD_NAME_LEN = 256;



        public long mStartTime;

        public long mEndTime;

        public String mKind;
@@ -1492,6 +1507,13 @@ public final class SQLiteConnection implements CancellationSignal.OnCancelListen 
            return mException != null ? "failed" : "succeeded";

        }



        private String getTraceMethodName() {

            String methodName = mKind + " " + mSql;

            if (methodName.length() > MAX_TRACE_METHOD_NAME_LEN)

                return methodName.substring(0, MAX_TRACE_METHOD_NAME_LEN);

            return methodName;

        }



        private String getFormattedStartTime() {

            // Note: SimpleDateFormat is not thread-safe, cannot be compile-time created, and is

            //       relatively expensive to create during preloading. This method is only used

core/java/android/os/Trace.java

+2 −0
Original line number Diff line number Diff line
@@ -79,6 +79,8 @@ public final class Trace { 
    public static final long TRACE_TAG_PACKAGE_MANAGER = 1L << 18;

    /** @hide */

    public static final long TRACE_TAG_SYSTEM_SERVER = 1L << 19;

    /** @hide */

    public static final long TRACE_TAG_DATABASE = 1L << 20;



    private static final long TRACE_TAG_NOT_READY = 1L << 63;

    private static final int MAX_SECTION_NAME_LEN = 127;