fork of https://github.com/oxigraph/rocksdb and https://github.com/facebook/rocksdb for nextgraph and oxigraph

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mrambacher 3dff28cf9b Use SystemClock* instead of std::shared_ptr<SystemClock> in lower level routines (#8033) ... Summary: For performance purposes, the lower level routines were changed to use a SystemClock* instead of a std::shared_ptr<SystemClock>. The shared ptr has some performance degradation on certain hardware classes. For most of the system, there is no risk of the pointer being deleted/invalid because the shared_ptr will be stored elsewhere. For example, the ImmutableDBOptions stores the Env which has a std::shared_ptr<SystemClock> in it. The SystemClock* within the ImmutableDBOptions is essentially a "short cut" to gain access to this constant resource. There were a few classes (PeriodicWorkScheduler?) where the "short cut" property did not hold. In those cases, the shared pointer was preserved. Using db_bench readrandom perf_level=3 on my EC2 box, this change performed as well or better than 6.17: 6.17: readrandom : 28.046 micros/op 854902 ops/sec; 61.3 MB/s (355999 of 355999 found) 6.18: readrandom : 32.615 micros/op 735306 ops/sec; 52.7 MB/s (290999 of 290999 found) PR: readrandom : 27.500 micros/op 871909 ops/sec; 62.5 MB/s (367999 of 367999 found) (Note that the times for 6.18 are prior to revert of the SystemClock). Pull Request resolved: https://github.com/facebook/rocksdb/pull/8033 Reviewed By: pdillinger Differential Revision: D27014563 Pulled By: mrambacher fbshipit-source-id: ad0459eba03182e454391b5926bf5cdd45657b67		4 years ago
..
blob_constants.h	Move BlobDB related files under db/ to db/blob/ (#6519)	5 years ago
blob_file_addition.cc	Move BlobDB related files under db/ to db/blob/ (#6519)	5 years ago
blob_file_addition.h	Move BlobDB related files under db/ to db/blob/ (#6519)	5 years ago
blob_file_addition_test.cc	Move BlobDB related files under db/ to db/blob/ (#6519)	5 years ago
blob_file_builder.cc	Use SystemClock* instead of std::shared_ptr<SystemClock> in lower level routines (#8033)	4 years ago
blob_file_builder.h	Use SystemClock* instead of std::shared_ptr<SystemClock> in lower level routines (#8033)	4 years ago
blob_file_builder_test.cc	Use SystemClock* instead of std::shared_ptr<SystemClock> in lower level routines (#8033)	4 years ago
blob_file_cache.cc	Add support for IOTracing in blob files (#7958)	4 years ago
blob_file_cache.h	Add support for IOTracing in blob files (#7958)	4 years ago
blob_file_cache_test.cc	Use SystemClock* instead of std::shared_ptr<SystemClock> in lower level routines (#8033)	4 years ago
blob_file_garbage.cc	Move BlobDB related files under db/ to db/blob/ (#6519)	5 years ago
blob_file_garbage.h	Move BlobDB related files under db/ to db/blob/ (#6519)	5 years ago
blob_file_garbage_test.cc	Move BlobDB related files under db/ to db/blob/ (#6519)	5 years ago
blob_file_meta.cc	Maintain the set of linked SSTs in BlobFileMetaData (#6945)	4 years ago
blob_file_meta.h	Maintain the set of linked SSTs in BlobFileMetaData (#6945)	4 years ago
blob_file_reader.cc	Use SystemClock* instead of std::shared_ptr<SystemClock> in lower level routines (#8033)	4 years ago
blob_file_reader.h	Update compaction statistics to include the amount of data read from blob files (#8022)	4 years ago
blob_file_reader_test.cc	Use SystemClock* instead of std::shared_ptr<SystemClock> in lower level routines (#8033)	4 years ago
blob_index.h	Introduce a blob file reader class (#7461)	4 years ago
blob_log_format.cc	Introduce BlobFileCache and add support for blob files to Get() (#7540)	4 years ago
blob_log_format.h	Introduce BlobFileCache and add support for blob files to Get() (#7540)	4 years ago
blob_log_sequential_reader.cc	Use SystemClock* instead of std::shared_ptr<SystemClock> in lower level routines (#8033)	4 years ago
blob_log_sequential_reader.h	Use SystemClock* instead of std::shared_ptr<SystemClock> in lower level routines (#8033)	4 years ago
blob_log_writer.cc	Use SystemClock* instead of std::shared_ptr<SystemClock> in lower level routines (#8033)	4 years ago
blob_log_writer.h	Use SystemClock* instead of std::shared_ptr<SystemClock> in lower level routines (#8033)	4 years ago
db_blob_basic_test.cc	Compaction filter support for (new) BlobDB (#7974)	4 years ago
db_blob_compaction_test.cc	Update compaction statistics to include the amount of data read from blob files (#8022)	4 years ago
db_blob_corruption_test.cc	Extend VerifyFileChecksums API for blob files (#7979)	4 years ago
db_blob_index_test.cc	Add further tests to ASSERT_STATUS_CHECKED (2) (#7698)	4 years ago