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ProcessStateRecord: add oom_adj type tracing

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Enable the debug flag for trace output in system_server of all OomAdjuster state transitions.

Test: local trace
Bug: 247573320
Change-Id: Id4519038198012ed3eb43f21a5a99f9323a592a7
This commit is contained in:
Tim Murray
2022-11-11 12:23:50 -08:00
parent 379975d9e7
commit f4bc936d1c
1 changed files with 14 additions and 0 deletions
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14
services/core/java/com/android/server/am/ProcessStateRecord.java
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@@ -30,6 +30,7 @@ import android.annotation.ElapsedRealtimeLong;
import android.app.ActivityManager;
import android.content.ComponentName;
import android.os.SystemClock;
import android.os.Trace;
import android.util.Slog;
import android.util.TimeUtils;
@@ -43,6 +44,9 @@ import java.io.PrintWriter;
* The state info of the process, including proc state, oom adj score, et al.
*/
final class ProcessStateRecord {
// Enable this to trace all OomAdjuster state transitions
private static final boolean TRACE_OOM_ADJ = false;
private final ProcessRecord mApp;
private final ActivityManagerService mService;
private final ActivityManagerGlobalLock mProcLock;
@@ -916,6 +920,12 @@ final class ProcessStateRecord {
@GuardedBy("mService")
void setAdjType(String adjType) {
if (TRACE_OOM_ADJ) {
Trace.asyncTraceForTrackEnd(Trace.TRACE_TAG_ACTIVITY_MANAGER,
"oom:" + mApp.processName + "/u" + mApp.uid, 0);
Trace.asyncTraceForTrackBegin(Trace.TRACE_TAG_ACTIVITY_MANAGER,
"oom:" + mApp.processName + "/u" + mApp.uid, adjType, 0);
}
mAdjType = adjType;
}
@@ -1153,6 +1163,10 @@ final class ProcessStateRecord {
@GuardedBy({"mService", "mProcLock"})
void onCleanupApplicationRecordLSP() {
if (TRACE_OOM_ADJ) {
Trace.asyncTraceForTrackEnd(Trace.TRACE_TAG_ACTIVITY_MANAGER,
"oom:" + mApp.processName + "/u" + mApp.uid, 0);
}
setHasForegroundActivities(false);
mHasShownUi = false;
mForcingToImportant = null;