AfflictionNetworks/narya
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Make the frames per second info available to callers.

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git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@2018 542714f4-19e9-0310-aa3c-eee0fc999fb1
This commit is contained in:
Michael Bayne
2002-12-04 01:25:17 +00:00
parent 6cabb846c5
commit 1d9de38b61
1 changed files with 35 additions and 14 deletions
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src/java/com/threerings/media/FrameManager.java
+35 -14
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@@ -1,5 +1,5 @@
//
// $Id: FrameManager.java,v 1.26 2002/12/03 19:42:21 mdb Exp $
// $Id: FrameManager.java,v 1.27 2002/12/04 01:25:17 mdb Exp $
package com.threerings.media;
@@ -168,6 +168,26 @@ public class FrameManager
return _timer.getElapsedMillis();
}
/**
* Returns the frequency with which the frame manager is attempting to
* call {@link #tick}.
*/
public float getAttemptedFramesPerSecond ()
{
return _fps[0];
}
/**
* Returns the frequency with which the frame manager is able to call
* {@link #tick} given that frames must be dropped if the previous
* call to {@link #tick} has not finished when the time comes for the
* next call.
*/
public float getAchievedFramesPerSecond ()
{
return _fps[1];
}
/**
* Starts up the per-frame tick
*/
@@ -582,6 +602,9 @@ public class FrameManager
/** The timer that dispatches our frame ticks. */
protected Timer _ticker;
/** Used to track and report frames per second. */
protected float[] _fps = new float[2];
/** The graphics object from our back buffer. */
protected Graphics _bgfx;
@@ -608,9 +631,7 @@ public class FrameManager
protected final synchronized boolean testAndSet ()
{
if (REPORT_FRAME_RATE) {
_tries++;
}
_tries++;
if (!_ticking) {
_ticking = true;
return true;
@@ -620,16 +641,16 @@ public class FrameManager
protected final synchronized void clearTicking (long elapsed)
{
if (REPORT_FRAME_RATE) {
if (++_ticks == 1500) {
long time = (elapsed - _lastTick);
float trps = _tries * 1000f / time;
float tips = _ticks * 1000f / time;
Log.info("Frame manager stats [tries/sec=" + trps +
", ticks/sec=" + tips + "].");
_lastTick = elapsed;
_ticks = _tries = 0;
if (++_ticks == 100) {
long time = (elapsed - _lastTick);
_fps[0] = _tries * 1000f / time;
_fps[1] = _ticks * 1000f / time;
if (REPORT_FRAME_RATE) {
Log.info("Frame manager stats [tries/sec=" + _fps[0] +
", ticks/sec=" + _fps[1] + "].");
}
_lastTick = elapsed;
_ticks = _tries = 0;
}
_ticking = false;
}
@@ -658,7 +679,7 @@ public class FrameManager
/** Used to compute metrics. */
protected long _lastTick;
/** Toggles whether or not metrics are tracked and reported. */
/** Toggles whether or not metrics are reported. */
protected static final boolean REPORT_FRAME_RATE = true;
};