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Prune files from /data/anr/ by number as well as age.

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tombstoned prunes based on both age and number of files. Until we can
fully switch over to tombstoned, emulate that here too.

Bug: http://b/73140330
Test: ran tests
Change-Id: I824034019e91d541fc7b7ba49d152e1ceaf37621
This commit is contained in:
Elliott Hughes
2018-03-22 14:06:37 -07:00
parent 72fa61b325
commit 08de1891c8
1 changed files with 9 additions and 8 deletions
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17
services/core/java/com/android/server/am/ActivityManagerService.java
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@@ -5678,15 +5678,16 @@ public class ActivityManagerService extends IActivityManager.Stub
* since it's the system_server that creates trace files for most ANRs.
*/
private static void maybePruneOldTraces(File tracesDir) {
final long now = System.currentTimeMillis();
final File[] traceFiles = tracesDir.listFiles();
final File[] files = tracesDir.listFiles();
if (files == null) return;
if (traceFiles != null) {
for (File file : traceFiles) {
if ((now - file.lastModified()) > DAY_IN_MILLIS) {
if (!file.delete()) {
Slog.w(TAG, "Unable to prune stale trace file: " + file);
}
final int max = SystemProperties.getInt("tombstoned.max_anr_count", 64);
final long now = System.currentTimeMillis();
Arrays.sort(files, Comparator.comparingLong(File::lastModified).reversed());
for (int i = 0; i < files.length; ++i) {
if (i > max || (now - files[i].lastModified()) > DAY_IN_MILLIS) {
if (!files[i].delete()) {
Slog.w(TAG, "Unable to prune stale trace file: " + files[i]);
}
}
}