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[RocksDB] LogBuffer Cleanup

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Summary: Moved LogBuffer class to an internal header. Removed some unneccesary indirection. Enabled log buffer for BackgroundCallFlush. Forced log buffer flush right after Unlock to improve time ordering of info log.

Test Plan: make check; db_bench compare LOG output

Reviewers: sdong

Reviewed By: sdong

CC: leveldb, igor

Differential Revision: https://reviews.facebook.net/D16707
This commit is contained in:
Haobo Xu
2014-03-09 22:01:13 -07:00
parent 04d2c26e17
commit 66da467983
8 changed files with 185 additions and 144 deletions
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24
include/rocksdb/env.h
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@@ -575,26 +575,6 @@ class Logger {
InfoLogLevel log_level_;
};
// A class to buffer info log entries and flush them in the end.
class LogBuffer {
public:
// log_level: the log level for all the logs
// info_log: logger to write the logs to
LogBuffer(const InfoLogLevel log_level, const shared_ptr<Logger>& info_log);
~LogBuffer();
// Add a log entry to the buffer.
void AddLogToBuffer(const char* format, va_list ap);
// Flush all buffered log to the info log.
void FlushBufferToLog() const;
private:
struct Rep;
Rep* rep_;
const InfoLogLevel log_level_;
const shared_ptr<Logger>& info_log_;
};
// Identifies a locked file.
class FileLock {
@@ -607,10 +587,6 @@ class FileLock {
void operator=(const FileLock&);
};
// Add log to the LogBuffer for a delayed info logging. It can be used when
// we want to add some logs inside a mutex.
extern void LogToBuffer(LogBuffer* log_buffer, const char* format, ...);
extern void LogFlush(const shared_ptr<Logger>& info_log);
extern void Log(const InfoLogLevel log_level,