Summary:
There are some time-related POSIX APIs that are not available on Windows
(e.g. `localtime_r`), which we have worked around by providing our own
implementations in `port/sys_time.h`. This workaround actually relies on
some ambiguity: on Windows, a call to `localtime_r` calls
`ROCKSDB_NAMESPACE::port::localtime_r` (which is pulled into
`ROCKSDB_NAMESPACE` by a using-declaration), while on other platforms
it calls the global `localtime_r`. This works fine as long as there is only one
candidate function; however, it breaks down when there is more than one
`localtime_r` visible in a scope.
The patch fixes this by introducing `ROCKSDB_NAMESPACE::port::{TimeVal, GetTimeOfDay, LocalTimeR}`
to eliminate any ambiguity.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/10045
Test Plan: `make check`
Reviewed By: riversand963
Differential Revision: D36639372
Pulled By: ltamasi
fbshipit-source-id: fc13dbfa421b7c8918111a6d9e24ce77e91a7c50
Summary:
When dynamically linking two binaries together, different builds of RocksDB from two sources might cause errors. To provide a tool for user to solve the problem, the RocksDB namespace is changed to a flag which can be overridden in build time.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6433
Test Plan: Build release, all and jtest. Try to build with ROCKSDB_NAMESPACE with another flag.
Differential Revision: D19977691
fbshipit-source-id: aa7f2d0972e1c31d75339ac48478f34f6cfcfb3e
Summary:
* Include `unistd.h` for `sleep(3)`
* Include `sys/time.h` for `gettimeofday(3)`
* Include `utils/random.h` for `Random64`
Error messages:
utilities/persistent_cache/hash_table_bench.cc: In constructor ‘rocksdb::HashTableBenchmark::HashTableBenchmark(rocksdb::HashTableImpl<long unsigned int, std::__cxx11::basic_string<char> >*, size_t, size_t, size_t, size_t)’:
utilities/persistent_cache/hash_table_bench.cc:76:28: error: ‘sleep’ was not declared in this scope
/* sleep override */ sleep(1);
^~~~~
utilities/persistent_cache/hash_table_bench.cc:76:28: note: suggested alternative: ‘strsep’
/* sleep override */ sleep(1);
^~~~~
strsep
utilities/persistent_cache/hash_table_bench.cc: In member function ‘void rocksdb::HashTableBenchmark::RunRead()’:
utilities/persistent_cache/hash_table_bench.cc:107:5: error: ‘Random64’ was not declared in this scope
Random64 rgen(time(nullptr));
^~~~~~~~
utilities/persistent_cache/hash_table_bench.cc:107:5: note: suggested alternative: ‘random_r’
Random64 rgen(time(nullptr));
^~~~~~~~
random_r
utilities/persistent_cache/hash_table_bench.cc:110:18: error: ‘rgen’ was not declared in this scope
size_t k = rgen.Next() % max_prepop_key;
^~~~
utilities/persistent_cache/hash_table_bench.cc: In static member function ‘static uint64_t rocksdb::HashTableBenchmark::NowInMillSec()’:
utilities/persistent_cache/hash_table_bench.cc:153:5: error: ‘gettimeofday’ was not declared in this scope
gettimeofday(&tv, /*tz=*/nullptr);
^~~~~~~~~~~~
make[2]: *** [CMakeFiles/hash_table_bench.dir/build.make:63: CMakeFiles/hash_table_bench.dir/utilities/persistent_cache/hash_table_bench.cc.o] Error 1
make[1]: *** [CMakeFiles/Makefile2:3346: CMakeFiles/hash_table_bench.dir/all] Error 2
make[1]: *** Waiting for unfinished jobs....
Closes https://github.com/facebook/rocksdb/pull/3283
Differential Revision: D6594850
Pulled By: ajkr
fbshipit-source-id: fd83957338c210cdfd253763347aafd39476824f
Summary:
I started adding gflags support for cmake on linux and got frustrated that I'd need to duplicate the build_detect_platform logic, which determines namespace based on attempting compilation. We can do it differently -- use the GFLAGS_NAMESPACE macro if available, and if not, that indicates it's an old gflags version without configurable namespace so we can simply hardcode "google".
Closes https://github.com/facebook/rocksdb/pull/3212
Differential Revision: D6456973
Pulled By: ajkr
fbshipit-source-id: 3e6d5bde3ca00d4496a120a7caf4687399f5d656
Summary:
The general convention in RocksDB is to use GFLAGS instead of google. Fixing the anomaly.
Closes https://github.com/facebook/rocksdb/pull/1470
Differential Revision: D4149213
Pulled By: kradhakrishnan
fbshipit-source-id: 2dafa53
* enable cmake to work on linux and osx also
* port part of build_detect_platform not covered by thirdparty.inc
to cmake.
- detect fallocate()
- detect malloc_usable_size()
- detect JeMalloc
- detect snappy
* check for asan,tsan,ubsan
* create 'build_version.cc' in build directory.
* add `check` target to support 'make check'.
* add `tools` target to match its counterpart in Makefile.
* use `date` on non-win32 platforms.
* pass different cflags on non-win32 platforms
* detect pthead library using FindThread cmake module.
* enable CMP0042 to silence the cmake warning on osx
* reorder the linked libraries. because testutillib references gtest, to
enable the linker to find the referenced symbols, we need to put gtest
after testutillib.
Signed-off-by: Marcus Watts <mwatts@redhat.com>
Signed-off-by: Kefu Chai <kchai@redhat.com>
* hash_table_bench.cc: fix build without gflags
Signed-off-by: Kefu Chai <kchai@redhat.com>
* remove gtest from librocksdb linkage
testharness.cc is included in librocksdb sources, and it uses gtest. but
gtest is not supposed to be part of the public API of librocksdb. so, in
this change, the testharness.cc is moved out out librocksdb, and is
built as an object target, then linked with the tools and tests instead.
Signed-off-by: Marcus Watts <mwatts@redhat.com>
Signed-off-by: Kefu Chai <kchai@redhat.com>
Summary:
Fix 2 issues that was breaking Windows build
1) double to size_t potential downcast warning
2) port_posix is not ready for windows, avoiding building hash_table_bench to
avoid build break
Test Plan: compile in Windoes and make check
Reviewers: sdong, andrewkr
Subscribers: andrewkr, dhruba, leveldb
Differential Revision: https://reviews.facebook.net/D59265
Summary: Add hash table (under persistent cache) to CMake list
Test Plan: Run hash_test in windows and make check in Linux
Reviewers: sdong
Subscribers: andrewkr, dhruba, leveldb
Differential Revision: https://reviews.facebook.net/D59151
Summary:
Persistent read cache isn't very applicable for lite builds. Wrapping
the code with #ifndef ROCKSDB_LITE .. #endif
Test Plan: Run unit, lite, lite_test
Reviewers: sdong
Subscribers: andrewkr, dhruba, leveldb
Differential Revision: https://reviews.facebook.net/D58563
Summary:
We expect the persistent read cache to perform at speeds upto 8 GB/s. In order
to accomplish that, we need build a index mechanism which operate in the order
of multiple millions per sec rate.
This patch provide the basic data structure to accomplish that:
(1) Hash table implementation with lock contention spread
It is based on the StripedHashSet<T> implementation in
The Art of multiprocessor programming by Maurice Henry & Nir Shavit
(2) LRU implementation
Place holder algorithm for further optimizing
(3) Evictable Hash Table implementation
Building block for building index data structure that evicts data like files
etc
TODO:
(1) Figure if the sharded hash table and LRU can be used instead
(2) Figure if we need to support configurable eviction algorithm for
EvictableHashTable
Test Plan: Run unit tests
Subscribers: andrewkr, dhruba, leveldb
Differential Revision: https://reviews.facebook.net/D55785
