logd: Add minimum time bucket statistics
* Only enabled for dev builds because halves performance.
- Used to establish if /proc/sys/net/unix/max_dgram_qlen
is appropriate for the platform
(see logd/LogStatistics.cpp comments)
- enabled if logd.dgram_qlen.statistics is not zero/empty
Change-Id: Ib8ecfeb75b6f0f954c099a6b1032b8afb5efcbd4
diff --git a/logd/LogStatistics.h b/logd/LogStatistics.h
index d44afa2..6a26263 100644
--- a/logd/LogStatistics.h
+++ b/logd/LogStatistics.h
@@ -114,6 +114,11 @@
size_t mSizes[LOG_ID_MAX];
size_t mElements[LOG_ID_MAX];
+ bool dgram_qlen_statistics;
+
+ static const unsigned short mBuckets[14];
+ log_time mMinimum[sizeof(mBuckets) / sizeof(mBuckets[0])];
+
public:
const log_time start;
@@ -121,6 +126,11 @@
LidStatistics &id(log_id_t log_id) { return LogIds[log_id]; }
+ void enableDgramQlenStatistics() { dgram_qlen_statistics = true; }
+ static unsigned short dgram_qlen(unsigned short bucket);
+ unsigned long long minimum(unsigned short bucket);
+ void recordDiff(log_time diff, unsigned short bucket);
+
void add(unsigned short size, log_id_t log_id, uid_t uid, pid_t pid);
void subtract(unsigned short size, log_id_t log_id, uid_t uid, pid_t pid);