rocksdb

fork of https://github.com/oxigraph/rocksdb and https://github.com/facebook/rocksdb for nextgraph and oxigraph

History

Dmitri Smirnov 36300fbbe3 Enable per-request buffer allocation in RandomAccessFile This change impacts only non-buffered I/O on Windows. Currently, there is a buffer per RandomAccessFile instance that is protected by a lock. The reason we maintain the buffer is non-buffered I/O requires an aligned buffer to work. XPerf traces demonstrate that we accumulate a considerable wait time while waiting for that lock. This change enables to set random access buffer size to zero which would indicate a per request allocation. We are expecting that allocation expense would be much less than I/O costs plus wait time due to the fact that the memory heap would tend to re-use page aligned allocations especially with the use of Jemalloc. This change does not affect buffer use as a read_ahead_buffer for compaction purposes.		9 years ago
..
win	Enable per-request buffer allocation in RandomAccessFile	9 years ago
README	reverting disastrous MOE commit, returning to r21	14 years ago
dirent.h	"make format" against last 10 commits	9 years ago
likely.h	cache SuperVersion in thread local storage to avoid mutex lock	11 years ago
port.h	Lint everything	9 years ago
port_example.h	Deprecate AtomicPointer	10 years ago
port_posix.cc	support for concurrent adds to memtable	9 years ago
port_posix.h	Align statistics	9 years ago
stack_trace.cc	Build for CYGWIN	10 years ago
stack_trace.h	Print out stack trace in mac, too	11 years ago
sys_time.h	"make format" against last 10 commits	9 years ago
util_logger.h	"make format" against last 10 commits	9 years ago

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.