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ed154f6dc4
leveldb/port
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gabor@google.com ed154f6dc4 Fixed a snappy compression wrapper bug (passing wrong variable). 
Change atomic_pointer.h to prefer a memory barrier based
implementation over a <cstdatomic> based implementation for
the following reasons:
(1) On a x86-32-bit gcc-4.4 build, <ctdatomic> was corrupting
    the AtomicPointer.
(2) On a x86-64-bit gcc build, a <ctstdatomic> based acquire-load
    takes ~15ns as opposed to the ~1ns for a memory-barrier
    based implementation.

Fixes issue 9 (corruption_test fails)
http://code.google.com/p/leveldb/issues/detail?id=9

Fixes issue 16 (CorruptionTest.MissingDescriptor fails)
http://code.google.com/p/leveldb/issues/detail?id=16



git-svn-id: https://leveldb.googlecode.com/svn/trunk@36 62dab493-f737-651d-591e-8d6aee1b9529
2011-06-30 23:17:03 +00:00
..
win reverting disastrous MOE commit, returning to r21 2011-04-19 23:11:15 +00:00
atomic_pointer.h Fixed a snappy compression wrapper bug (passing wrong variable). 2011-06-30 23:17:03 +00:00
port_android.cc reverting disastrous MOE commit, returning to r21 2011-04-19 23:11:15 +00:00
port_android.h @20776309 2011-04-20 22:48:11 +00:00
port_chromium.cc reverting disastrous MOE commit, returning to r21 2011-04-19 23:11:15 +00:00
port_chromium.h @20776309 2011-04-20 22:48:11 +00:00
port_example.h @20776309 2011-04-20 22:48:11 +00:00
port_posix.cc reverting disastrous MOE commit, returning to r21 2011-04-19 23:11:15 +00:00
port_posix.h Fixed a snappy compression wrapper bug (passing wrong variable). 2011-06-30 23:17:03 +00:00
port.h Platform detection during build, plus compatibility patches for machines without <cstdatomic>. 2011-06-29 00:30:50 +00:00
README reverting disastrous MOE commit, returning to r21 2011-04-19 23:11:15 +00:00
sha1_portable.cc reverting disastrous MOE commit, returning to r21 2011-04-19 23:11:15 +00:00
sha1_portable.h reverting disastrous MOE commit, returning to r21 2011-04-19 23:11:15 +00:00
sha1_test.cc reverting disastrous MOE commit, returning to r21 2011-04-19 23:11:15 +00:00

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.