LevelDB_TTL_

小组成员：姚凯文（kevinyao0901），姜嘉琪

Historia

gabor@google.com f57e23351f Platform detection during build, plus compatibility patches for machines without <cstdatomic>. This revision adds two major changes: 1. build_detect_platform which generates build_config.mk with platform-dependent flags for the build process 2. /port/atomic_pointer.h with anAtomicPointerimplementation for platforms without <cstdatomic> Some of this code is loosely based on patches submitted to the LevelDB mailing list at https://groups.google.com/forum/#!forum/leveldb Tip of the hat to Dave Smith and Edouard A, who both sent patches. The presence of Snappy (http://code.google.com/p/snappy/) and cstdatomic are now both detected in the build_detect_platform script (1.) which gets executing during make. For (2.), instead of broadly importing atomicops_* from Chromium or the Google performance tools, we chose to just implement AtomicPointer and the limited atomic load and store operations it needs. This resulted in much less code and fewer files - everything is contained in atomic_pointer.h. git-svn-id: https://leveldb.googlecode.com/svn/trunk@34 62dab493-f737-651d-591e-8d6aee1b9529			13 vuotta sitten
..
win	reverting disastrous MOE commit, returning to r21	删除	14 vuotta sitten
README	reverting disastrous MOE commit, returning to r21		14 vuotta sitten
atomic_pointer.h	Platform detection during build, plus compatibility patches for machines without <cstdatomic>.		13 vuotta sitten
port.h	Platform detection during build, plus compatibility patches for machines without <cstdatomic>.		13 vuotta sitten
port_android.cc	reverting disastrous MOE commit, returning to r21		14 vuotta sitten
port_android.h	@20776309		14 vuotta sitten
port_chromium.cc	reverting disastrous MOE commit, returning to r21		14 vuotta sitten
port_chromium.h	@20776309		14 vuotta sitten
port_example.h	@20776309		14 vuotta sitten
port_osx.cc	Update from upstream @21551990		14 vuotta sitten
port_osx.h	Update from upstream @21551990		14 vuotta sitten
port_posix.cc	reverting disastrous MOE commit, returning to r21		14 vuotta sitten
port_posix.h	Platform detection during build, plus compatibility patches for machines without <cstdatomic>.		13 vuotta sitten
sha1_portable.cc	reverting disastrous MOE commit, returning to r21		14 vuotta sitten
sha1_portable.h	reverting disastrous MOE commit, returning to r21		14 vuotta sitten
sha1_test.cc	reverting disastrous MOE commit, returning to r21		14 vuotta sitten

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.