commit ec39a3f6dfd207cb40df15c841703198d35d9dc1
author Tom Cherry <tomcherry@google.com> Thu Jul 09 09:51:16 2020 -0700
committer Tom Cherry <tomcherry@google.com> Fri Jul 17 15:08:21 2020 -0700
tree 680e3e78adc3d109ef53f111b91d74a4759d136d
parent 1270608dbf08f6969b33c84848cf3bb86ae62a58

logd: record and replay log messages

To profile different log buffer types and configuration, this change
adds the ability to record log messages and adds a tool that will
replay those log messages through different log buffer implementations
and collect stats about the execution.

Test: log messages replay correctly
Change-Id: I0dc6c545b782fa7732e325dde109c496b137d0dd

logd/LogStatistics.h

diff --git a/logd/LogStatistics.h b/logd/LogStatistics.h
index d440a8c..e222d3f 100644
--- a/logd/LogStatistics.h
+++ b/logd/LogStatistics.h
@@ -515,7 +515,8 @@
     }
 
   public:
-    LogStatistics(bool enable_statistics, bool track_total_size);
+    LogStatistics(bool enable_statistics, bool track_total_size,
+                  std::optional<log_time> start_time = {});
 
     void AddTotal(log_id_t log_id, uint16_t size) EXCLUDES(lock_);
 
@@ -556,6 +557,7 @@
         return SizesTotal;
     }
 
+    std::string ReportInteresting() const EXCLUDES(lock_);
     std::string Format(uid_t uid, pid_t pid, unsigned int logMask) const EXCLUDES(lock_);
 
     const char* PidToName(pid_t pid) const EXCLUDES(lock_);