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

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Andrew Kryczka a4a4a2dabd dedup ReadOptions in iterator hierarchy (#7210) ... Summary: Previously, a `ReadOptions` object was stored in every `BlockBasedTableIterator` and every `LevelIterator`. This redundancy consumes extra memory, resulting in the `Arena` making more allocations, and iteration observing worse cache performance. This PR migrates callers of `NewInternalIterator()` and `MakeInputIterator()` to provide a `ReadOptions` object guaranteed to outlive the returned iterator. When the iterator's lifetime will be managed by the user, this lifetime guarantee is achieved by storing the `ReadOptions` value in `ArenaWrappedDBIter`. Then, sub-iterators of `NewInternalIterator()` and `MakeInputIterator()` can hold a reference-to-const `ReadOptions`. Pull Request resolved: https://github.com/facebook/rocksdb/pull/7210 Test Plan: - `make check` under ASAN and valgrind - benchmark: on a DB with 2 L0 files and 3 L1+ levels, this PR reduced `Arena` allocation 4792 -> 4160 bytes. Reviewed By: anand1976 Differential Revision: D22861323 Pulled By: ajkr fbshipit-source-id: 54aebb3e89c872eeab0f5793b4b6e42878d093ce		4 years ago
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adaptive	Extend Get/MultiGet deadline support to table open (#6982)	4 years ago
block_based	dedup ReadOptions in iterator hierarchy (#7210)	4 years ago
cuckoo	Extend Get/MultiGet deadline support to table open (#6982)	4 years ago
plain	Fixed Factory construct just for calling .Name() (#7080)	4 years ago
block_fetcher.cc	Skip unnecessary allocation for mmap reads under 5000 bytes (#7043)	4 years ago
block_fetcher.h	Reduce memory copies when fetching and uncompressing blocks from SST files (#6689)	5 years ago
block_fetcher_test.cc	More Makefile Cleanup (#7097)	4 years ago
cleanable_test.cc	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)	5 years ago
format.cc	Extend Get/MultiGet deadline support to table open (#6982)	4 years ago
format.h	Extend Get/MultiGet deadline support to table open (#6982)	4 years ago
get_context.cc	Add timestamp to delete (#6253)	5 years ago
get_context.h	Stats for redundant insertions into block cache (#6681)	5 years ago
internal_iterator.h	Properly report IO errors when IndexType::kBinarySearchWithFirstKey is used (#6621)	5 years ago
iter_heap.h	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)	5 years ago
iterator.cc	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)	5 years ago
iterator_wrapper.h	Implement NextAndGetResult() in memtable and level iterator (#7179)	4 years ago
merger_test.cc	More Makefile Cleanup (#7097)	4 years ago
merging_iterator.cc	Properly report IO errors when IndexType::kBinarySearchWithFirstKey is used (#6621)	5 years ago
merging_iterator.h	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)	5 years ago
meta_blocks.cc	Separate internal and user key comparators in `BlockIter` (#6944)	4 years ago
meta_blocks.h	Extend Get/MultiGet deadline support to table open (#6982)	4 years ago
mock_table.cc	Add hash of key/value checks when paranoid_file_checks=true (#7134)	4 years ago
mock_table.h	Add hash of key/value checks when paranoid_file_checks=true (#7134)	4 years ago
multiget_context.h	Allow MultiGet users to limit cumulative value size (#6826)	5 years ago
persistent_cache_helper.cc	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)	5 years ago
persistent_cache_helper.h	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)	5 years ago
persistent_cache_options.h	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)	5 years ago
scoped_arena_iterator.h	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)	5 years ago
sst_file_dumper.cc	Fix GetFileDbIdentities (#7104)	4 years ago
sst_file_dumper.h	Fix GetFileDbIdentities (#7104)	4 years ago
sst_file_reader.cc	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)	5 years ago
sst_file_reader_test.cc	Allow table/sst_file_reader_test.cc to use custom Env (#6536)	5 years ago
sst_file_writer.cc	Store DB identity and DB session ID in SST files (#6983)	4 years ago
sst_file_writer_collectors.h	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)	5 years ago
table_builder.h	Store DB identity and DB session ID in SST files (#6983)	4 years ago
table_properties.cc	Store DB identity and DB session ID in SST files (#6983)	4 years ago
table_properties_internal.h	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)	5 years ago
table_reader.h	dedup ReadOptions in iterator hierarchy (#7210)	4 years ago
table_reader_bench.cc	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)	5 years ago
table_reader_caller.h	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)	5 years ago
table_test.cc	dedup ReadOptions in iterator hierarchy (#7210)	4 years ago
two_level_iterator.cc	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)	5 years ago
two_level_iterator.h	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)	5 years ago