XOY-Leveldb

作者：谢瑞阳 10225101483 徐翔宇 10225101535

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			пре 8 година
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win	reverting disastrous MOE commit, returning to r21	删除	пре 14 година
README	reverting disastrous MOE commit, returning to r21		пре 14 година
atomic_pointer.h	Fix Android/MIPS build.		пре 10 година
port.h	Remove static initializer; fix endian-ness detection; fix build on		пре 13 година
port_example.h	Implement support for Intel crc32 instruction (SSE 4.2)		пре 8 година
port_posix.cc	Including atomic_pointer.h in port_posix		пре 9 година
port_posix.h	Implement support for Intel crc32 instruction (SSE 4.2)		пре 8 година
port_posix_sse.cc	Implement support for Intel crc32 instruction (SSE 4.2)		пре 8 година
thread_annotations.h	Release 1.18		пре 10 година

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.