LevelDB-course-Lab

小组成员：10215300402-朱维清 & 10222140408 谷杰

Victor Costan 27dc99fb26 Fix EnvPosix tests on Travis CI. The previous attempt of having EnvPosix use O_CLOEXEC (close-on-exec()) when opening file descriptors added tests that relied on procfs, which is Linux-specific. These tests failed on macOS. Unfortunately, the test failures were not caught due to a (since fixed) error in our Travis CI configuration. This CL re-structures the tests to only rely on POSIX features. Since there is no POSIX-compliant way to get a file name/path out of a file descriptor, this CL breaks up the O_CLOEXEC test into multiple tests, where each Env method that creates an FD gets its own test. This is intended to make it easier to find and fix errors in Env implementations. This CL also fixes the implementation of NewLogger() to use O_CLOEXEC on macOS. The current implementation passes "we" to fopen(), but the macOS standard C library does not implement the "e" flag yet. PiperOrigin-RevId: 247088953		5 vuotta sitten
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arena.cc	Correct class/structure declaration order.	5 vuotta sitten
arena.h	Correct class/structure declaration order.	5 vuotta sitten
arena_test.cc	Format all files IAW the Google C++ Style Guide.	5 vuotta sitten
bloom.cc	Correct class/structure declaration order.	5 vuotta sitten
bloom_test.cc	Correct class/structure declaration order.	5 vuotta sitten
cache.cc	Format all files IAW the Google C++ Style Guide.	5 vuotta sitten
cache_test.cc	Correct class/structure declaration order.	5 vuotta sitten
coding.cc	Clean up util/coding.{h,cc}.	5 vuotta sitten
coding.h	Clean up util/coding.{h,cc}.	5 vuotta sitten
coding_test.cc	Format all files IAW the Google C++ Style Guide.	5 vuotta sitten
comparator.cc	Style cleanup.	5 vuotta sitten
crc32c.cc	Format all files IAW the Google C++ Style Guide.	5 vuotta sitten
crc32c.h	Format all files IAW the Google C++ Style Guide.	5 vuotta sitten
crc32c_test.cc	Format all files IAW the Google C++ Style Guide.	5 vuotta sitten
env.cc	Style cleanup.	5 vuotta sitten
env_posix.cc	Fix EnvPosix tests on Travis CI.	5 vuotta sitten
env_posix_test.cc	Fix EnvPosix tests on Travis CI.	5 vuotta sitten
env_posix_test_helper.h	Limit the number of read-only files the POSIX Env will have open.	8 vuotta sitten
env_test.cc	Correct class/structure declaration order.	5 vuotta sitten
env_windows.cc	Correct class/structure declaration order.	5 vuotta sitten
env_windows_test.cc	Correct class/structure declaration order.	5 vuotta sitten
env_windows_test_helper.h	Switch corruption_test to use InMemEnv.	5 vuotta sitten
filter_policy.cc	Format all files IAW the Google C++ Style Guide.	5 vuotta sitten
hash.cc	Format all files IAW the Google C++ Style Guide.	5 vuotta sitten
hash.h	Remove extern from function declarations.	6 vuotta sitten
hash_test.cc	Format all files IAW the Google C++ Style Guide.	5 vuotta sitten
histogram.cc	Format all files IAW the Google C++ Style Guide.	5 vuotta sitten
histogram.h	Correct class/structure declaration order.	5 vuotta sitten
logging.cc	Format all files IAW the Google C++ Style Guide.	5 vuotta sitten
logging.h	Format all files IAW the Google C++ Style Guide.	5 vuotta sitten
logging_test.cc	Format all files IAW the Google C++ Style Guide.	5 vuotta sitten
mutexlock.h	Format all files IAW the Google C++ Style Guide.	5 vuotta sitten
no_destructor.h	Format all files IAW the Google C++ Style Guide.	5 vuotta sitten
no_destructor_test.cc	Format all files IAW the Google C++ Style Guide.	5 vuotta sitten
options.cc	Format all files IAW the Google C++ Style Guide.	5 vuotta sitten
posix_logger.h	Format all files IAW the Google C++ Style Guide.	5 vuotta sitten
random.h	Format all files IAW the Google C++ Style Guide.	5 vuotta sitten
status.cc	Format all files IAW the Google C++ Style Guide.	5 vuotta sitten
status_test.cc	Format all files IAW the Google C++ Style Guide.	5 vuotta sitten
testharness.cc	Format all files IAW the Google C++ Style Guide.	5 vuotta sitten
testharness.h	Format all files IAW the Google C++ Style Guide.	5 vuotta sitten
testutil.cc	Format all files IAW the Google C++ Style Guide.	5 vuotta sitten
testutil.h	Format all files IAW the Google C++ Style Guide.	5 vuotta sitten
windows_logger.h	Format all files IAW the Google C++ Style Guide.	5 vuotta sitten