XOY-Leveldb

作者：谢瑞阳 10225101483 徐翔宇 10225101535

Verlauf

costan 2964b803b8 leveldb: Fix alignment code in SSE4.2-optimized CRC32C. When faced with a pointer that is misaligned by K bytes (pointer % 8 == K), the code previously moved forward by K bytes. In order to end up with an aligned pointer, the code must move by 8 - K bytes. This lands https://github.com/google/leveldb/pull/488 ------------- Created by MOE: https://github.com/google/moe MOE_MIGRATED_REVID=166295921			vor 7 Jahren
..
win	reverting disastrous MOE commit, returning to r21	删除	vor 13 Jahren
README	reverting disastrous MOE commit, returning to r21		vor 13 Jahren
atomic_pointer.h	Use __APPLE__ instead of OS_MACOS. The former is compiler-provided.		vor 7 Jahren
port.h	Remove static initializer; fix endian-ness detection; fix build on		vor 12 Jahren
port_example.h	Implement support for Intel crc32 instruction (SSE 4.2)		vor 7 Jahren
port_posix.cc	Including atomic_pointer.h in port_posix		vor 9 Jahren
port_posix.h	Use __APPLE__ instead of OS_MACOS. The former is compiler-provided.		vor 7 Jahren
port_posix_sse.cc	leveldb: Fix alignment code in SSE4.2-optimized CRC32C.		vor 7 Jahren
thread_annotations.h	Release 1.18		vor 10 Jahren

README

This directory contains interfaces and implementations that isolate the
rest of the package from platform details.

Code in the rest of the package includes "port.h" from this directory.
"port.h" in turn includes a platform specific "port_<platform>.h" file
that provides the platform specific implementation.

See port_posix.h for an example of what must be provided in a platform
specific header file.