When an app takes a long time to handle broadcasts, we start deferring
further broadcasts to it to make sure that other broadcast traffic in
the system can continue to make progress. Global delivery order is
technically rearranged, but delivery order from the point of view of any
given app remains consistent with issuance order.
When alarm broadcasts are issued, we prioritize delivery of deferred
alarms to the alarm recipients (i.e. we suspend the deferral policy and
catch up as promptly as possible) in order to minimize wake time spent
waiting for the alarm broadcast to be delivered. Once an app with a
deferred broadcast backlog is no longer the target of an in-flight
alarm, we re-impose deferral policy on it.
This policy intentionally trades off increased broadcast delivery
latency to apps that take a "long" time to handle broadcasts, in
exchange for lowering delivery latency to all other apps in the system
that would previously have had to wait behind the slow app.
In addition, broadcast dispatch policy parameters can now be overlaid
via the usual global Settings mechanism. In particular, configuring the
"bcast_slow_time" parameter to a value in milliseconds higher than the
queue's broadcast timeout period will disable the new slow-receiver
policies.
Bug: 111404343
Test: device boots & runs
Test: tests/ActivityTests
Change-Id: I76ac79bdf41ca3cfcc48515bca779ea0f5744c0b
Test: Launch DisableScreenshotsActivity, go to recents, make sure
content is blue. Reopen activity from home, make sure starting
window is blue.
Bug: 31339431
Change-Id: I29689774c3cdcb784d8f5bfa4f947a6f35b91e01
Test: runtest frameworks-services -c
com.android.server.wm.TaskSnapshotControllerTest
Test: Launch DisableScreenshotsActivity, go to recents, make sure
content is white.
Bug: 31339431
Change-Id: I329925d2fca389e561da3389a67fe888b5bb1033
...to an explicit toggle to enable in Settings
Add a new permission flag, saying the permission can be automatically
granted to pre-api-23 apps. Apply this to SYSTEM_ALERT_WINDOW.
Change-Id: I24a0ceabe7e9f5e458a864d30eda2696ad14a699
Since these alarms allow you to bypass the idle restrictions,
we don't want them to be so open-ended like other alarms. This
implements a policy where the alarm manager will only deliver these
types of alarms every X minutes to each application. For this
initial implementation, X is 1 minute under normal operation and
15 minutes when in idle mode.
To do this, I needed to introduce a new internal allow-while-idle
flag for system alarms, which applications can't get, and doesn't
have these new restrictions.
Also tweaked how the alarm manager handles the alarm window, so it
doesn't change if the alarm gets rescheduld; the window is now always
what as computed based on the time when the alarm was first
given to it.
Finally, fix TimeUtils to be able to correctly print times that
are > 999 days.
Change-Id: Ibad8c6a7c14b0624b54e82267be23224b4c31e84
This adds a new ActivityOption for the caller to ask the
system to track the time the user is in the app it launches,
delivering the result when they are done.
The time interval tracked is from when the app launches the
activity until the user leaves that app's flow. They are
considered to stay in the flow as long as new activities
are being launched or returned to from the original flow,
even if they cross package or task boundaries. For example,
if the originator starts an activity to view an image, and
while there the user selects to share, which launches gmail
in a new task, and they complete the share, the time during
that entire operation will be included.
The user is considered to complete the operation once they
switch to another activity that is not part of the tracked
flow. For example, use the notification shade, launcher, or
recents to launch or switch to another app. Simply going
in to these navigation elements does not break the flow
(although the launcher and recents stops time tracking of
the session), it is the act of going somewhere else that
completes the tracking.
The data is delivered to the app through a PendingIntent,
which includes the total time the app was in the flow along
with a time break-down by app package.
Change-Id: If1cf8892d422c52ec5042eba0e15a8e7e8f83abf
Keep around GET_TASKS as a permission available to apps, so apps still
think they have it and don't get all uppity because they don't.
Add a new REAL_GET_TASKS that is the actual permission now.
Plus some temporary compatibility code until everyone can transition
fromn GET_TASKS to REAL_GET_TASKS.
Change-Id: I12c1102eed24844685dcbd2fa3b612811603958f
Improve the warning logs when setting up preferred activities
to help identify when there are issues and what they are. Also
improve the algorithm a little to still apply permissions when
resetting them and there are additional third party apps, as long
as the additional app is something like another browser and the
preferred activity being set is more specific (has a better match).
And add an example of using manifest-based preferred activities
in to ActivityTest -- and yes it DOES work! :p
Change-Id: I1ff39e03a5df6526206e0c3882085396b355d814
In application processes, monitor for when we start getting close
to the Dalvik heap limit, and ask the activity manager to try to
prune old activity instances in that case.
Add an explicit API for apps to ask that they have their own
activity instances cleaned up, if they want.
Fix some bugs in launching activities that were not correctly
applying the "multi task" behavior in the appropriate situations
of document-centric recents.
Clean up the activity manager's process removal code to all share
a common path.
Add a new "Spam" option to ActivityTests, which continually creates
new tasks, checking that the activity manager will now prune old
tasks rather than letting the app run out of RAM.
And while I was was doing this, I found problems with the path
for bringing an empty task to the foreground -- it could make
a new task instead of re-starting the root activity in the
existing task. This is fixed, and some code in the recents
UI for working around the bug is removed.
And as long as I am doing that, we now have nice hooks in to
the activity manager for AppTask to give some APIs for better
managing the task, so add those along with more tests for these
APIs in ActivityTests.
We should look at also having the activity manager try to prune
old tasks when it sees app processes being killed, to better balance
memory use across multiple processes when some processes may host
many documents. That however is for another CL...
Change-Id: I2bb81c3f92819350c868c7a7470b35817eb9bea9
It is wrong to turn the token into a null appWindowToken; we
need to create a new top-level token as if they had passed in null.
Change-Id: I870d8167c6ed456ea8fd58b149809ec9e0103bce
- You can now use android:singleUser with receivers and providers.
- New API to send ordered broadcasts as a user.
- New Process.myUserHandle() API.
For now I am trying out "user handle" as the name for the numbers
representing users.
Change-Id: I754c713ab172494bb4251bc7a37a17324a2e235e
- Expose the existing Context.sendBroadcast() as
Context.sendBroadcastAsUser().
- Add new android:singleUser attribute for services.
- Add new INTERACT_ACROSS_USERS_FULL permission for full
system-level access to cross-user interface (allows
sendBroadcastAsUser() to send to any receiver).
- Add new INTERACT_ACROSS_USERS_FULL permission for
more restricted cross-user interaction: this is required
for android:singleUser, and allows you to use
sendBroadcastAsUser() but only to send to your own
receivers.
Change-Id: I0de88f6718e9505f4de72e3f45d29c0f503b76e9
You can remove sub-tasks inside of a task, or an entire task.
When removing an entire task, you can have its process killed
as well.
When the process is killed, any running services will get an
onTaskRemoved() callback for them to do cleanup before their
process is killed (and the service possibly restarted).
Or they can set a new android:stopWithTask attribute to just
have the service automatically (cleanly) stopped at this point.
Change-Id: I1891bc2da006fa53b99c52f9040f1145650e6808
We now only keep a thumbnail for the task, not for each
activity. However if you use FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET,
we will make a new secondary thumbnail for that series of
activities. There is a new API for the app to get these
secondary thumbnails.
Also set a default thumbnail size for non-xlarge screens
so we have thumbnails on phones. (We need some smarter
code in the platform for computing the actual thumbnail
dimensions of the current device). And add a test app
to show recent tasks + thumbnails.
Change-Id: Ic36759f6635522118a2cb7f156662229a610c492
