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platform_system_core
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logd: prune 10% or 256 entries max 

Bug: 22351810
Bug: 23327476
Change-Id: I902ba6b431d8b7cee2d65ee2f76e9f7c4f30b152
This commit is contained in:
Mark Salyzyn 2015-08-19 12:20:36 -07:00
parent e03d0322db
commit b39ed0c992
1 changed files with 7 additions and 11 deletions
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18
logd/LogBuffer.cpp
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@ -217,27 +217,23 @@ int LogBuffer::log(log_id_t log_id, log_time realtime,
return len;
}
// If we're using more than 256K of memory for log entries, prune
// at least 10% of the log entries. For sizes above 1M, prune at
// least 1% of the log entries.
// Prune at most 10% of the log entries or 256, whichever is less.
//
// mLogElementsLock must be held when this function is called.
void LogBuffer::maybePrune(log_id_t id) {
size_t sizes = stats.sizes(id);
unsigned long maxSize = log_buffer_size(id);
if (sizes > maxSize) {
size_t sizeOver, minElements, elements = stats.elements(id);
if (maxSize > (4 * LOG_BUFFER_SIZE)) {
sizeOver = sizes - ((maxSize * 99) / 100);
minElements = elements / 100;
} else {
sizeOver = sizes - ((maxSize * 9) / 10);
minElements = elements / 10;
}
size_t sizeOver = sizes - ((maxSize * 9) / 10);
size_t elements = stats.elements(id);
size_t minElements = elements / 10;
unsigned long pruneRows = elements * sizeOver / sizes;
if (pruneRows <= minElements) {
pruneRows = minElements;
}
if (pruneRows > 256) {
pruneRows = 256;
}
prune(id, pruneRows);
}
}