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platform_system_core
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am abc3d43a: am fba413d8: Merge changes I04fad67e,I5ab24bc7 

* commit 'abc3d43a9da698c5362eb0cb1eb594e241e1884d':
  logd: KISS & fix preserve a day
  logd: deal with sloppy leading expire messages
This commit is contained in:
Mark Salyzyn 2015-06-01 22:02:28 +00:00 committed by Android Git Automerger
parent ae9c829777 abc3d43a9d
commit 44376fe56f
1 changed files with 23 additions and 25 deletions
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48
logd/LogBuffer.cpp
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@ -388,7 +388,6 @@ void LogBuffer::prune(log_id_t id, unsigned long pruneRows, uid_t caller_uid) {
bool kick = false;
bool leading = true;
LogBufferElementLast last;
log_time start(log_time::EPOCH);
for(it = mLogElements.begin(); it != mLogElements.end();) {
LogBufferElement *e = *it;
@ -417,8 +416,6 @@ void LogBuffer::prune(log_id_t id, unsigned long pruneRows, uid_t caller_uid) {
continue;
}
leading = false;
if (hasBlacklist && mPrune.naughty(e)) {
last.clear(e);
it = erase(it);
@ -448,29 +445,24 @@ void LogBuffer::prune(log_id_t id, unsigned long pruneRows, uid_t caller_uid) {
}
if (e->getUid() != worst) {
if (start != log_time::EPOCH) {
if (leading) {
static const timespec too_old = {
EXPIRE_HOUR_THRESHOLD * 60 * 60, 0
};
start = e->getRealTime() + too_old;
LogBufferElementCollection::iterator last;
last = mLogElements.end();
--last;
if ((e->getRealTime() < ((*last)->getRealTime() - too_old))
|| (e->getRealTime() > (*last)->getRealTime())) {
break;
}
}
leading = false;
last.clear(e);
++it;
continue;
}
if ((start != log_time::EPOCH) && (e->getRealTime() > start)) {
// KISS. Really a heuristic rather than algorithmically strong,
// a crude mechanism, the following loops will move the oldest
// watermark possibly wiping out the extra EXPIRE_HOUR_THRESHOLD
// we just thought we were preserving. We count on the typical
// pruneRows of 10% of total not being a sledgehammer.
// A stronger algorithm would have us loop back to the top if
// we have worst-UID enabled and we start expiring messages
// below less than EXPIRE_HOUR_THRESHOLD old.
break;
}
pruneRows--;
if (pruneRows == 0) {
break;
@ -479,15 +471,21 @@ void LogBuffer::prune(log_id_t id, unsigned long pruneRows, uid_t caller_uid) {
kick = true;
unsigned short len = e->getMsgLen();
stats.drop(e);
e->setDropped(1);
if (last.merge(e, 1)) {
it = mLogElements.erase(it);
stats.erase(e);
delete e;
// do not create any leading drops
if (leading) {
it = erase(it);
} else {
last.add(e);
++it;
stats.drop(e);
e->setDropped(1);
if (last.merge(e, 1)) {
it = mLogElements.erase(it);
stats.erase(e);
delete e;
} else {
last.add(e);
++it;
}
}
if (worst_sizes < second_worst_sizes) {
break;