leveldb_ttl

作者：韩晨旭 10225101440 李畅 10225102463

Verlauf

costan a7dc502e9f Rework once initialization in env_posix.cc. C++11 guarantees thread-safe initialization of static variables inside functions. This is a more restricted form of std::call_once or pthread_once_t (e.g., single call site), so the compiler might be able to generate better code [1]. Equally important, having less platform-dependent code in env_posix.cc makes it easier to port to other platforms. Due to the change above, this CL introduced a new approach for storing the singleton PosixEnv instance returned by Env::Default(). The new approach avoids a dynamic memory allocation, which eliminates the false positive from LeakSanitizer reported in https://github.com/google/leveldb/issues/539 and https://github.com/google/leveldb/issues/113 [1] https://stackoverflow.com/a/27206650/ ------------- Created by MOE: https://github.com/google/moe MOE_MIGRATED_REVID=214293129		vor 6 Jahren
..
arena.cc	Replace NULL with nullptr in C++ files.	vor 6 Jahren
arena.h	Resolve race when getting approximate-memory-usage property	vor 9 Jahren
arena_test.cc	Release LevelDB 1.15	vor 11 Jahren
bloom.cc	Fix size_t/int comparison/conversion issues in leveldb.	vor 9 Jahren
bloom_test.cc	Fix size_t/int comparison/conversion issues in leveldb.	vor 9 Jahren
cache.cc	Replace NULL with nullptr in C++ files.	vor 6 Jahren
cache_test.cc	Replace NULL with nullptr in C++ files.	vor 6 Jahren
coding.cc	Replace NULL with nullptr in C++ files.	vor 6 Jahren
coding.h	Replace NULL with nullptr in C++ files.	vor 6 Jahren
coding_test.cc	Replace NULL with nullptr in C++ files.	vor 6 Jahren
comparator.cc	Remove InitOnce from the port API.	vor 6 Jahren
crc32c.cc	Use portable CRC32C from google/crc32c.	vor 7 Jahren
crc32c.h	Remove extern from function declarations.	vor 6 Jahren
crc32c_test.cc	A number of fixes:	vor 13 Jahren
env.cc	Replace NULL with nullptr in C++ files.	vor 6 Jahren
env_posix.cc	Rework once initialization in env_posix.cc.	vor 6 Jahren
env_posix_test.cc	Replace NULL with nullptr in C++ files.	vor 6 Jahren
env_posix_test_helper.h	Limit the number of read-only files the POSIX Env will have open.	vor 8 Jahren
env_test.cc	Replace NULL with nullptr in C++ files.	vor 6 Jahren
filter_policy.cc	Added bloom filter support.	vor 12 Jahren
hash.cc	Release 1.18	vor 10 Jahren
hash.h	Remove extern from function declarations.	vor 6 Jahren
hash_test.cc	Release 1.18	vor 10 Jahren
histogram.cc	A number of fixes:	vor 13 Jahren
histogram.h	A number of fixes:	vor 13 Jahren
logging.cc	Add forgotten <limits> header to util/logging.cc.	vor 6 Jahren
logging.h	Remove extern from function declarations.	vor 6 Jahren
logging_test.cc	Add tests for ConsumeDecimalNumber.	vor 6 Jahren
mutexlock.h	C++11 cleanup for util/mutexlock.h.	vor 6 Jahren
no_destructor.h	Remove InitOnce from the port API.	vor 6 Jahren
no_destructor_test.cc	Remove InitOnce from the port API.	vor 6 Jahren
options.cc	Replace NULL with nullptr in C++ files.	vor 6 Jahren
posix_logger.h	Rework threading in env_posix.cc.	vor 6 Jahren
random.h	LevelDB 1.13	vor 11 Jahren
status.cc	Replace NULL with nullptr in C++ files.	vor 6 Jahren
status_test.cc	Add move constructor to Status.	vor 6 Jahren
testharness.cc	Replace NULL with nullptr in C++ files.	vor 6 Jahren
testharness.h	Fix includes in util/testharness.h.	vor 6 Jahren
testutil.cc	Remove extern from function declarations.	vor 6 Jahren
testutil.h	Replace NULL with nullptr in C++ files.	vor 6 Jahren