Files
frameworks_base/services/java/com/android/server/am/ProcessMemInfo.java
Dianne Hackborn 8e69257a9c Implement #10749688: Improve low memory reporting
This significantly reworks the logging we do when
all cached processes are killed:

- We now collect the list of processes in-place so we
  have a snapshot of exactly when the low memory situation
  happened.
- In that snapshot we include the key process state: oom
  adj, proc state, adj reasons.
- The report then asynchronously collects pss information
  for those processes.
- The ultimate data printed to the log looks like a mix
  between the "dumpsys meminfo" and "dumpsys activity"
  output.  This code no longer uses "dumpsys meminfo"
  itself, so some of that data is no longer included,
  in particular pss organized by allocation type.

In doing this, I realized that the existing code that is
supposed to run "procstats" is not currently working.  And
at that point I realized, really, when we are collecting
this pss data we'd really like to include all those native
processes using ghod-only-knows how much RAM.  And guess
what, we have a list of processes available in
ProcessCpuTracker.

So we now also collect and print information for native
processes, and we also do this for "dumpsys meminfo" which
really seems like a good thing when we are printing summaries
of all pss and such.

I also improved the code for reading /proc/meminfo to be
able to load all the interesting fields from there, and
am now printing that as well.

Change-Id: I9e7d13e9c07a8249c7a7e12e5433973b2c0fdc11
2013-09-13 16:02:01 -07:00

38 lines
1.1 KiB
Java

/*
* Copyright (C) 2013 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.server.am;
public class ProcessMemInfo {
final String name;
final int pid;
final int oomAdj;
final int procState;
final String adjType;
final String adjReason;
long pss;
public ProcessMemInfo(String _name, int _pid, int _oomAdj, int _procState,
String _adjType, String _adjReason) {
name = _name;
pid = _pid;
oomAdj = _oomAdj;
procState = _procState;
adjType = _adjType;
adjReason = _adjReason;
}
}