XOY-Leveldb

作者：谢瑞阳 10225101483 徐翔宇 10225101535

Vēsture

costan ea175e28f8 Implement support for Intel crc32 instruction (SSE 4.2) This change authored by vadimskipin and submitted via: https://github.com/google/leveldb/pull/309 Changes made to support iOS builds and other architectures without support for SSE 4.2. db_bench reports original crc32 speed at: crc32c : 3.610 micros/op; 1082.0 MB/s (4K per op) with this change performance has increased to: crc32c : 0.843 micros/op; 4633.6 MB/s (4K per op) ------------- Created by MOE: https://github.com/google/moe MOE_MIGRATED_REVID=148694935		pirms 7 gadiem
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arena.cc	Resolve race when getting approximate-memory-usage property	pirms 9 gadiem
arena.h	Resolve race when getting approximate-memory-usage property	pirms 9 gadiem
arena_test.cc	Release LevelDB 1.15	pirms 11 gadiem
bloom.cc	Fix size_t/int comparison/conversion issues in leveldb.	pirms 9 gadiem
bloom_test.cc	Fix size_t/int comparison/conversion issues in leveldb.	pirms 9 gadiem
cache.cc	fix problems in LevelDB's caching code	pirms 8 gadiem
cache_test.cc	fix problems in LevelDB's caching code	pirms 8 gadiem
coding.cc	Update to leveldb 1.6	pirms 12 gadiem
coding.h	A number of fixes:	pirms 13 gadiem
coding_test.cc	Release LevelDB 1.15	pirms 11 gadiem
comparator.cc	Remove static initializer; fix endian-ness detection; fix build on	pirms 12 gadiem
crc32c.cc	Implement support for Intel crc32 instruction (SSE 4.2)	pirms 7 gadiem
crc32c.h	A number of fixes:	pirms 13 gadiem
crc32c_test.cc	A number of fixes:	pirms 13 gadiem
env.cc	LevelDB now attempts to reuse the preceding MANIFEST and log file when re-opened.	pirms 9 gadiem
env_posix.cc	Including <limits> for std::numeric_limits.	pirms 7 gadiem
env_posix_test_helper.h	Limit the number of read-only files the POSIX Env will have open.	pirms 8 gadiem
env_test.cc	Limit the number of read-only files the POSIX Env will have open.	pirms 8 gadiem
filter_policy.cc	Added bloom filter support.	pirms 12 gadiem
hash.cc	Release 1.18	pirms 10 gadiem
hash.h	reverting disastrous MOE commit, returning to r21	pirms 13 gadiem
hash_test.cc	Release 1.18	pirms 10 gadiem
histogram.cc	A number of fixes:	pirms 13 gadiem
histogram.h	A number of fixes:	pirms 13 gadiem
logging.cc	Release 1.18	pirms 10 gadiem
logging.h	Release 1.18	pirms 10 gadiem
mutexlock.h	Update to leveldb 1.6	pirms 12 gadiem
options.cc	Add option for max file size. The currend hard-coded value of 2M is inefficient in colossus.	pirms 8 gadiem
posix_logger.h	A number of fixes:	pirms 13 gadiem
random.h	LevelDB 1.13	pirms 11 gadiem
status.cc	A number of fixes:	pirms 13 gadiem
testharness.cc	Release LevelDB 1.15	pirms 11 gadiem
testharness.h	A number of fixes:	pirms 13 gadiem
testutil.cc	Release LevelDB 1.15	pirms 11 gadiem
testutil.h	LevelDB now attempts to reuse the preceding MANIFEST and log file when re-opened.	pirms 9 gadiem