Use ashmem backed bitmaps for passing around notifications
Avoids many copies during IPC and duplicate Java heap consumption in
system_server, SystemUI, etc.
Bug: 18386420
Change-Id: Id5ac9406062d472f7848009d65f12131f5f4dac9
diff --git a/core/java/android/app/Notification.java b/core/java/android/app/Notification.java
index 5a0d246..af9decc 100644
--- a/core/java/android/app/Notification.java
+++ b/core/java/android/app/Notification.java
@@ -3586,12 +3586,19 @@
* object.
*/
public Notification build() {
+ if (mSmallIcon != null) {
+ mSmallIcon.convertToAshmem();
+ }
+ if (mLargeIcon != null) {
+ mLargeIcon.convertToAshmem();
+ }
mOriginatingUserId = mContext.getUserId();
mHasThreeLines = hasThreeLines();
Notification n = buildUnstyled();
if (mStyle != null) {
+ mStyle.purgeResources();
n = mStyle.buildStyled(n);
}
@@ -3790,6 +3797,8 @@
return wip;
}
+ public void purgeResources() {}
+
// The following methods are split out so we can re-create notification partially.
/**
* @hide
@@ -3901,8 +3910,18 @@
return this;
}
- private RemoteViews makeBigContentView() {
+ @Override
+ public void purgeResources() {
+ super.purgeResources();
+ if (mPicture != null && mPicture.isMutable()) {
+ mPicture = mPicture.createAshmemBitmap();
+ }
+ if (mBigLargeIcon != null) {
+ mBigLargeIcon.convertToAshmem();
+ }
+ }
+ private RemoteViews makeBigContentView() {
// Replace mLargeIcon with mBigLargeIcon if mBigLargeIconSet
// This covers the following cases:
// 1. mBigLargeIconSet -> mBigLargeIcon (null or non-null) applies, overrides