summaryrefslogtreecommitdiffstats
path: root/core
diff options
context:
space:
mode:
Diffstat (limited to 'core')
-rw-r--r--core/java/android/app/ActivityManager.java33
-rw-r--r--core/java/android/app/ActivityManagerNative.java25
-rw-r--r--core/java/android/app/IActivityManager.java10
-rw-r--r--core/java/android/content/ComponentCallbacks2.java38
-rw-r--r--core/java/android/view/HardwareRenderer.java13
-rw-r--r--core/java/android/view/WindowManagerImpl.java36
6 files changed, 117 insertions, 38 deletions
diff --git a/core/java/android/app/ActivityManager.java b/core/java/android/app/ActivityManager.java
index d98d87b..59c803e 100644
--- a/core/java/android/app/ActivityManager.java
+++ b/core/java/android/app/ActivityManager.java
@@ -1145,7 +1145,14 @@ public class ActivityManager {
* @hide
*/
public int flags;
-
+
+ /**
+ * Last memory trim level reported to the process: corresponds to
+ * the values supplied to {@link android.content.ComponentCallbacks2#onTrimMemory(int)
+ * ComponentCallbacks2.onTrimMemory(int)}.
+ */
+ public int lastTrimLevel;
+
/**
* Constant for {@link #importance}: this process is running the
* foreground UI.
@@ -1212,7 +1219,7 @@ public class ActivityManager {
* be maintained in the future.
*/
public int lru;
-
+
/**
* Constant for {@link #importanceReasonCode}: nothing special has
* been specified for the reason for this level.
@@ -1282,6 +1289,7 @@ public class ActivityManager {
dest.writeInt(uid);
dest.writeStringArray(pkgList);
dest.writeInt(this.flags);
+ dest.writeInt(lastTrimLevel);
dest.writeInt(importance);
dest.writeInt(lru);
dest.writeInt(importanceReasonCode);
@@ -1296,6 +1304,7 @@ public class ActivityManager {
uid = source.readInt();
pkgList = source.readStringArray();
flags = source.readInt();
+ lastTrimLevel = source.readInt();
importance = source.readInt();
lru = source.readInt();
importanceReasonCode = source.readInt();
@@ -1349,7 +1358,25 @@ public class ActivityManager {
return null;
}
}
-
+
+ /**
+ * Return global memory state information for the calling process. This
+ * does not fill in all fields of the {@link RunningAppProcessInfo}. The
+ * only fields that will be filled in are
+ * {@link RunningAppProcessInfo#pid},
+ * {@link RunningAppProcessInfo#uid},
+ * {@link RunningAppProcessInfo#lastTrimLevel},
+ * {@link RunningAppProcessInfo#importance},
+ * {@link RunningAppProcessInfo#lru}, and
+ * {@link RunningAppProcessInfo#importanceReasonCode}.
+ */
+ static public void getMyMemoryState(RunningAppProcessInfo outState) {
+ try {
+ ActivityManagerNative.getDefault().getMyMemoryState(outState);
+ } catch (RemoteException e) {
+ }
+ }
+
/**
* Return information about the memory usage of one or more processes.
*
diff --git a/core/java/android/app/ActivityManagerNative.java b/core/java/android/app/ActivityManagerNative.java
index 24079a5..b952649 100644
--- a/core/java/android/app/ActivityManagerNative.java
+++ b/core/java/android/app/ActivityManagerNative.java
@@ -1126,7 +1126,17 @@ public abstract class ActivityManagerNative extends Binder implements IActivityM
reply.writeNoException();
return true;
}
-
+
+ case GET_MY_MEMORY_STATE_TRANSACTION: {
+ data.enforceInterface(IActivityManager.descriptor);
+ ActivityManager.RunningAppProcessInfo info =
+ new ActivityManager.RunningAppProcessInfo();
+ getMyMemoryState(info);
+ reply.writeNoException();
+ info.writeToParcel(reply, 0);
+ return true;
+ }
+
case GET_DEVICE_CONFIGURATION_TRANSACTION: {
data.enforceInterface(IActivityManager.descriptor);
ConfigurationInfo config = getDeviceConfigurationInfo();
@@ -2973,6 +2983,19 @@ class ActivityManagerProxy implements IActivityManager
reply.recycle();
}
+ public void getMyMemoryState(ActivityManager.RunningAppProcessInfo outInfo)
+ throws RemoteException
+ {
+ Parcel data = Parcel.obtain();
+ Parcel reply = Parcel.obtain();
+ data.writeInterfaceToken(IActivityManager.descriptor);
+ mRemote.transact(GET_MY_MEMORY_STATE_TRANSACTION, data, reply, 0);
+ reply.readException();
+ outInfo.readFromParcel(reply);
+ reply.recycle();
+ data.recycle();
+ }
+
public ConfigurationInfo getDeviceConfigurationInfo() throws RemoteException
{
Parcel data = Parcel.obtain();
diff --git a/core/java/android/app/IActivityManager.java b/core/java/android/app/IActivityManager.java
index 53a71db..ea2545f 100644
--- a/core/java/android/app/IActivityManager.java
+++ b/core/java/android/app/IActivityManager.java
@@ -278,13 +278,16 @@ public interface IActivityManager extends IInterface {
* SIGUSR1 is delivered. All others are ignored.
*/
public void signalPersistentProcesses(int signal) throws RemoteException;
- // Retrieve info of applications installed on external media that are currently
- // running.
+ // Retrieve running application processes in the system
public List<ActivityManager.RunningAppProcessInfo> getRunningAppProcesses()
throws RemoteException;
- // Retrieve running application processes in the system
+ // Retrieve info of applications installed on external media that are currently
+ // running.
public List<ApplicationInfo> getRunningExternalApplications()
throws RemoteException;
+ // Get memory information about the calling process.
+ public void getMyMemoryState(ActivityManager.RunningAppProcessInfo outInfo)
+ throws RemoteException;
// Get device configuration
public ConfigurationInfo getDeviceConfigurationInfo() throws RemoteException;
@@ -606,4 +609,5 @@ public interface IActivityManager extends IInterface {
int KILL_ALL_BACKGROUND_PROCESSES_TRANSACTION = IBinder.FIRST_CALL_TRANSACTION+139;
int GET_CONTENT_PROVIDER_EXTERNAL_TRANSACTION = IBinder.FIRST_CALL_TRANSACTION+140;
int REMOVE_CONTENT_PROVIDER_EXTERNAL_TRANSACTION = IBinder.FIRST_CALL_TRANSACTION+141;
+ int GET_MY_MEMORY_STATE_TRANSACTION = IBinder.FIRST_CALL_TRANSACTION+142;
}
diff --git a/core/java/android/content/ComponentCallbacks2.java b/core/java/android/content/ComponentCallbacks2.java
index 8b9f97c..85294dd 100644
--- a/core/java/android/content/ComponentCallbacks2.java
+++ b/core/java/android/content/ComponentCallbacks2.java
@@ -52,15 +52,49 @@ public interface ComponentCallbacks2 extends ComponentCallbacks {
static final int TRIM_MEMORY_UI_HIDDEN = 20;
/**
+ * Level for {@link #onTrimMemory(int)}: the process is not an expendable
+ * background process, but the device is running extremely low on memory
+ * and is about to not be able to keep any background processes running.
+ * Your running process should free up as many non-critical resources as it
+ * can to allow that memory to be used elsewhere. The next thing that
+ * will happen after this is {@link #onLowMemory()} called to report that
+ * nothing at all can be kept in the background, a situation that can start
+ * to notably impact the user.
+ */
+ static final int TRIM_MEMORY_RUNNING_CRITICAL = 15;
+
+ /**
+ * Level for {@link #onTrimMemory(int)}: the process is not an expendable
+ * background process, but the device is running low on memory.
+ * Your running process should free up unneeded resources to allow that
+ * memory to be used elsewhere.
+ */
+ static final int TRIM_MEMORY_RUNNING_LOW = 10;
+
+
+ /**
+ * Level for {@link #onTrimMemory(int)}: the process is not an expendable
+ * background process, but the device is running moderately low on memory.
+ * Your running process may want to release some unneeded resources for
+ * use elsewhere.
+ */
+ static final int TRIM_MEMORY_RUNNING_MODERATE = 5;
+
+ /**
* Called when the operating system has determined that it is a good
* time for a process to trim unneeded memory from its process. This will
* happen for example when it goes in the background and there is not enough
- * memory to keep as many background processes running as desired.
+ * memory to keep as many background processes running as desired. You
+ * should never compare to exact values of the level, since new intermediate
+ * values may be added -- you will typically want to compare if the value
+ * is greater or equal to a level you are interested in.
*
* @param level The context of the trim, giving a hint of the amount of
* trimming the application may like to perform. May be
* {@link #TRIM_MEMORY_COMPLETE}, {@link #TRIM_MEMORY_MODERATE},
- * {@link #TRIM_MEMORY_BACKGROUND}, or {@link #TRIM_MEMORY_UI_HIDDEN}.
+ * {@link #TRIM_MEMORY_BACKGROUND}, {@link #TRIM_MEMORY_UI_HIDDEN},
+ * {@link #TRIM_MEMORY_RUNNING_CRITICAL}, {@link #TRIM_MEMORY_RUNNING_LOW},
+ * or {@link #TRIM_MEMORY_RUNNING_MODERATE}.
*/
void onTrimMemory(int level);
}
diff --git a/core/java/android/view/HardwareRenderer.java b/core/java/android/view/HardwareRenderer.java
index ec95863..bf91700 100644
--- a/core/java/android/view/HardwareRenderer.java
+++ b/core/java/android/view/HardwareRenderer.java
@@ -1284,15 +1284,10 @@ public abstract class HardwareRenderer {
usePbufferSurface(managedContext.getContext());
}
- switch (level) {
- case ComponentCallbacks2.TRIM_MEMORY_UI_HIDDEN:
- case ComponentCallbacks2.TRIM_MEMORY_BACKGROUND:
- case ComponentCallbacks2.TRIM_MEMORY_MODERATE:
- GLES20Canvas.flushCaches(GLES20Canvas.FLUSH_CACHES_MODERATE);
- break;
- case ComponentCallbacks2.TRIM_MEMORY_COMPLETE:
- GLES20Canvas.flushCaches(GLES20Canvas.FLUSH_CACHES_FULL);
- break;
+ if (level >= ComponentCallbacks2.TRIM_MEMORY_COMPLETE) {
+ GLES20Canvas.flushCaches(GLES20Canvas.FLUSH_CACHES_FULL);
+ } else if (level >= ComponentCallbacks2.TRIM_MEMORY_UI_HIDDEN) {
+ GLES20Canvas.flushCaches(GLES20Canvas.FLUSH_CACHES_MODERATE);
}
}
diff --git a/core/java/android/view/WindowManagerImpl.java b/core/java/android/view/WindowManagerImpl.java
index d482b35..0e4a30f 100644
--- a/core/java/android/view/WindowManagerImpl.java
+++ b/core/java/android/view/WindowManagerImpl.java
@@ -432,29 +432,25 @@ public class WindowManagerImpl implements WindowManager {
*/
public void trimMemory(int level) {
if (HardwareRenderer.isAvailable()) {
- switch (level) {
- case ComponentCallbacks2.TRIM_MEMORY_COMPLETE:
- case ComponentCallbacks2.TRIM_MEMORY_MODERATE:
- // On low and medium end gfx devices
- if (!ActivityManager.isHighEndGfx(getDefaultDisplay())) {
- // Destroy all hardware surfaces and resources associated to
- // known windows
- synchronized (this) {
- if (mViews == null) return;
- int count = mViews.length;
- for (int i = 0; i < count; i++) {
- mRoots[i].terminateHardwareResources();
- }
+ // On low and medium end gfx devices
+ if (!ActivityManager.isHighEndGfx(getDefaultDisplay())) {
+ if (level >= ComponentCallbacks2.TRIM_MEMORY_MODERATE) {
+ // Destroy all hardware surfaces and resources associated to
+ // known windows
+ synchronized (this) {
+ if (mViews == null) return;
+ int count = mViews.length;
+ for (int i = 0; i < count; i++) {
+ mRoots[i].terminateHardwareResources();
}
- // Force a full memory flush
- HardwareRenderer.trimMemory(ComponentCallbacks2.TRIM_MEMORY_COMPLETE);
- mNeedsEglTerminate = true;
- break;
}
- // high end gfx devices fall through to next case
- default:
- HardwareRenderer.trimMemory(level);
+ // Force a full memory flush
+ HardwareRenderer.trimMemory(ComponentCallbacks2.TRIM_MEMORY_COMPLETE);
+ mNeedsEglTerminate = true;
+ return;
+ }
}
+ HardwareRenderer.trimMemory(level);
}
}
generated by cgit v1.1 at 2025-08-15 05:41:35 +0000