leveldb_ttl

作者：韩晨旭 10225101440 李畅 10225102463

Historia

Adam Azarchs 75fceae700 Add O_CLOEXEC to open calls. This prevents file descriptors from leaking to child processes. When compiled for older (pre-2.6.23) kernels which lack support for O_CLOEXEC there is no change in behavior. With newer kernels, child processes will no longer inherit leveldb's file handles, which reduces the changes of accidentally corrupting the database. Fixes https://github.com/google/leveldb/issues/623			6 lat temu
..
win	reverting disastrous MOE commit, returning to r21	删除	13 lat temu
README	Replace port_posix with port_stdcxx.		6 lat temu
atomic_pointer.h	Take <atomic> for granted in port/atomic_pointer.h.		6 lat temu
port.h	Replace port_posix with port_stdcxx.		6 lat temu
port_config.h.in	Add O_CLOEXEC to open calls.		5 lat temu
port_example.h	Remove InitOnce from the port API.		6 lat temu
port_stdcxx.h	Remove InitOnce from the port API.		6 lat temu
thread_annotations.h	Enable thread safety annotations in open source version.		6 lat temu

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