diff options
Diffstat (limited to 'src/leveldb/db/db_impl.h')
-rw-r--r-- | src/leveldb/db/db_impl.h | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/src/leveldb/db/db_impl.h b/src/leveldb/db/db_impl.h index bd29dd8055..75fd30abe9 100644 --- a/src/leveldb/db/db_impl.h +++ b/src/leveldb/db/db_impl.h @@ -59,13 +59,19 @@ class DBImpl : public DB { // file at a level >= 1. int64_t TEST_MaxNextLevelOverlappingBytes(); + // Record a sample of bytes read at the specified internal key. + // Samples are taken approximately once every config::kReadBytesPeriod + // bytes. + void RecordReadSample(Slice key); + private: friend class DB; struct CompactionState; struct Writer; Iterator* NewInternalIterator(const ReadOptions&, - SequenceNumber* latest_snapshot); + SequenceNumber* latest_snapshot, + uint32_t* seed); Status NewDB(); @@ -135,6 +141,7 @@ class DBImpl : public DB { WritableFile* logfile_; uint64_t logfile_number_; log::Writer* log_; + uint32_t seed_; // For sampling. // Queue of writers. std::deque<Writer*> writers_; @@ -163,6 +170,7 @@ class DBImpl : public DB { // Have we encountered a background error in paranoid mode? Status bg_error_; + int consecutive_compaction_errors_; // Per level compaction stats. stats_[level] stores the stats for // compactions that produced data for the specified "level". |