Fix the performance collection in the http thread. A connection can be reused. Change the thread time collection based on per request.

core/java/android/net/http/ConnectionThread.java

@@ -32,8 +32,8 @@ class ConnectionThread extends Thread {
     static final int WAIT_TICK = 1000;
 
     // Performance probe
-    long mStartThreadTime;
     long mCurrentThreadTime;
+    long mTotalThreadTime;
 
     private boolean mWaiting;
     private volatile boolean mRunning = true;
@@ -71,10 +71,18 @@ class ConnectionThread extends Thread {
         android.os.Process.setThreadPriority(
                 android.os.Process.THREAD_PRIORITY_LESS_FAVORABLE);
 
-        mStartThreadTime = -1;
-        mCurrentThreadTime = SystemClock.currentThreadTimeMillis();
+        // these are used to get performance data. When it is not in the timing,
+        // mCurrentThreadTime is 0. When it starts timing, mCurrentThreadTime is
+        // first set to -1, it will be set to the current thread time when the
+        // next request starts.
+        mCurrentThreadTime = 0;
+        mTotalThreadTime = 0;
 
         while (mRunning) {
+            if (mCurrentThreadTime == -1) {
+                mCurrentThreadTime = SystemClock.currentThreadTimeMillis();
+            }
+
             Request request;
 
             /* Get a request to process */
@@ -86,14 +94,14 @@ class ConnectionThread extends Thread {
                     if (HttpLog.LOGV) HttpLog.v("ConnectionThread: Waiting for work");
                     mWaiting = true;
                     try {
-                        if (mStartThreadTime != -1) {
-                            mCurrentThreadTime = SystemClock
-                                    .currentThreadTimeMillis();
-                        }
                         mRequestFeeder.wait();
                     } catch (InterruptedException e) {
                     }
                     mWaiting = false;
+                    if (mCurrentThreadTime != 0) {
+                        mCurrentThreadTime = SystemClock
+                                .currentThreadTimeMillis();
+                    }
                 }
             } else {
                 if (HttpLog.LOGV) HttpLog.v("ConnectionThread: new request " +
@@ -123,6 +131,12 @@ class ConnectionThread extends Thread {
                     mConnection.closeConnection();
                 }
                 mConnection = null;
+
+                if (mCurrentThreadTime > 0) {
+                    long start = mCurrentThreadTime;
+                    mCurrentThreadTime = SystemClock.currentThreadTimeMillis();
+                    mTotalThreadTime += mCurrentThreadTime - start;
+                }
             }
 
         }

core/java/android/net/http/RequestQueue.java

@@ -279,7 +279,9 @@ public class RequestQueue implements RequestFeeder {
 
         public void startTiming() {
             for (int i = 0; i < mConnectionCount; i++) {
-                mThreads[i].mStartThreadTime = mThreads[i].mCurrentThreadTime;
+                ConnectionThread rt = mThreads[i];
+                rt.mCurrentThreadTime = -1;
+                rt.mTotalThreadTime = 0;
             }
             mTotalRequest = 0;
             mTotalConnection = 0;
@@ -289,12 +291,14 @@ public class RequestQueue implements RequestFeeder {
             int totalTime = 0;
             for (int i = 0; i < mConnectionCount; i++) {
                 ConnectionThread rt = mThreads[i];
-                totalTime += (rt.mCurrentThreadTime - rt.mStartThreadTime);
-                rt.mStartThreadTime = -1;
+                if (rt.mCurrentThreadTime != -1) {
+                    totalTime += rt.mTotalThreadTime;
+                }
+                rt.mCurrentThreadTime = 0;
             }
             Log.d("Http", "Http thread used " + totalTime + " ms " + " for "
                     + mTotalRequest + " requests and " + mTotalConnection
-                    + " connections");
+                    + " new connections");
         }
 
         void logState() {