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am aabf7a59: am d2d7d5c8: am 60fa4617: Merge changes I50eb7dcf,I7ae92ce1,Icb22db1c into jb-mr1-dev

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* commit 'aabf7a5940ab917a3d2835d32707dccc418a42a9':
  Don't enable input dispatch until the screen is visible.
  Dejank electron beam.
  Don't process UEvents in Dalvik unless they match a pattern.
This commit is contained in:
Jeff Brown
2012-10-11 00:17:56 -07:00
committed by Android Git Automerger
parent ba251d2816 aabf7a5940
commit f02070ca7d
4 changed files with 135 additions and 35 deletions
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46
core/java/android/os/UEventObserver.java
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@@ -16,6 +16,8 @@
package android.os;
import android.util.Log;
import java.util.ArrayList;
import java.util.HashMap;
@@ -37,14 +39,20 @@ import java.util.HashMap;
* @hide
*/
public abstract class UEventObserver {
private static final String TAG = "UEventObserver";
private static final boolean DEBUG = false;
private static UEventThread sThread;
private static native void native_setup();
private static native int next_event(byte[] buffer);
private static native void nativeSetup();
private static native String nativeWaitForNextEvent();
private static native void nativeAddMatch(String match);
private static native void nativeRemoveMatch(String match);
public UEventObserver() {
}
@Override
protected void finalize() throws Throwable {
try {
stopObserving();
@@ -78,10 +86,18 @@ public abstract class UEventObserver {
* This method can be called multiple times to register multiple matches.
* Only one call to stopObserving is required even with multiple registered
* matches.
* @param match A substring of the UEvent to match. Use "" to match all
* UEvent's
*
* @param match A substring of the UEvent to match. Try to be as specific
* as possible to avoid incurring unintended additional cost from processing
* irrelevant messages. Netlink messages can be moderately high bandwidth and
* are expensive to parse. For example, some devices may send one netlink message
* for each vsync period.
*/
public final void startObserving(String match) {
if (match == null || match.isEmpty()) {
throw new IllegalArgumentException("match substring must be non-empty");
}
final UEventThread t = getThread();
t.addObserver(match, this);
}
@@ -117,7 +133,7 @@ public abstract class UEventObserver {
while (offset < length) {
int equals = message.indexOf('=', offset);
int at = message.indexOf(0, offset);
int at = message.indexOf('\0', offset);
if (at < 0) break;
if (equals > offset && equals < at) {
@@ -158,15 +174,17 @@ public abstract class UEventObserver {
super("UEventObserver");
}
@Override
public void run() {
native_setup();
nativeSetup();
byte[] buffer = new byte[1024];
int len;
while (true) {
len = next_event(buffer);
if (len > 0) {
sendEvent(new String(buffer, 0, len));
String message = nativeWaitForNextEvent();
if (message != null) {
if (DEBUG) {
Log.d(TAG, message);
}
sendEvent(message);
}
}
}
@@ -176,7 +194,7 @@ public abstract class UEventObserver {
final int N = mKeysAndObservers.size();
for (int i = 0; i < N; i += 2) {
final String key = (String)mKeysAndObservers.get(i);
if (message.indexOf(key) != -1) {
if (message.contains(key)) {
final UEventObserver observer =
(UEventObserver)mKeysAndObservers.get(i + 1);
mTempObserversToSignal.add(observer);
@@ -199,6 +217,7 @@ public abstract class UEventObserver {
synchronized (mKeysAndObservers) {
mKeysAndObservers.add(match);
mKeysAndObservers.add(observer);
nativeAddMatch(match);
}
}
@@ -208,7 +227,8 @@ public abstract class UEventObserver {
for (int i = 0; i < mKeysAndObservers.size(); ) {
if (mKeysAndObservers.get(i + 1) == observer) {
mKeysAndObservers.remove(i + 1);
mKeysAndObservers.remove(i);
final String match = (String)mKeysAndObservers.remove(i);
nativeRemoveMatch(match);
} else {
i += 2;
}