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3df07d1703
rocksdb/util
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sdong 3df07d1703 ThreadPool to allow decrease number of threads and increase of number of threads is to be instantly scheduled 
Summary:
Add a feature to decrease the number of threads in thread pool.
Also instantly schedule more threads if number of threads is increased.

Here is the way it is implemented: each background thread needs its thread ID. After decreasing number of threads, all threads are woken up. The thread with the largest thread ID will terminate. If there are more threads to terminate, the thread will wake up all threads again.

Another change is made so that when number of threads is increased, more threads are created and all previous excessive threads are woken up to do the work.

Test Plan: Add a unit test.

Reviewers: haobo, dhruba

Reviewed By: haobo

CC: yhchiang, igor, nkg-, leveldb

Differential Revision: https://reviews.facebook.net/D18675
2014-05-19 11:52:12 -07:00
..
arena_test.cc Arena to inline 2KB of data in it. 2014-05-14 11:49:01 -07:00
arena.cc declare kInline size in arena.cc 2014-05-14 12:40:49 -07:00
arena.h Fix errors while building with clang 2014-05-15 12:34:53 +08:00
auto_roll_logger_test.cc Renamed InfoLogLevel::DEBUG to InfoLogLevel::DEBUG_LEVEL 2014-04-10 15:27:42 -07:00
auto_roll_logger.cc Merge branch 'master' into columnfamilies 2014-04-02 10:48:05 -07:00
auto_roll_logger.h Renamed InfoLogLevel::DEBUG to InfoLogLevel::DEBUG_LEVEL 2014-04-10 15:27:42 -07:00
autovector_test.cc autovector::resize 2014-05-08 13:50:49 -07:00
autovector.h autovector::resize 2014-05-08 13:50:49 -07:00
benchharness_test.cc Fix unsigned and signed integer compare 2014-04-29 12:29:22 -07:00
benchharness.cc Fix more signed/unsigned comparsions 2014-04-29 12:40:18 -07:00
benchharness.h log_and_apply_bench on a new benchmark framework 2014-05-05 11:11:48 -07:00
blob_store_test.cc Move the compiler back to 4.8.1 + more small fixes 2013-11-18 11:40:16 -08:00
blob_store.cc RocksDBLite 2014-04-15 13:39:26 -07:00
blob_store.h RocksDBLite 2014-04-15 13:39:26 -07:00
bloom_test.cc Fix more gflag namespace issues 2014-05-09 08:41:02 -07:00
bloom.cc Add appropriate LICENSE and Copyright message. 2013-10-16 17:48:41 -07:00
build_version.h Dont build version if compiling for IOS 2014-04-11 10:54:47 -07:00
cache_test.cc ApplyToAllCacheEntries 2014-05-02 16:24:04 -04:00
cache.cc ApplyToAllCacheEntries 2014-05-02 16:24:04 -04:00
coding_test.cc Misc cleanup on performance branch 2014-01-17 14:26:29 -08:00
coding.cc Merge branch 'master' into performance 2014-01-28 10:35:55 -08:00
coding.h Merge branch 'master' into performance 2014-01-28 10:35:55 -08:00
comparator.cc Add appropriate LICENSE and Copyright message. 2013-10-16 17:48:41 -07:00
crc32c_test.cc Add appropriate LICENSE and Copyright message. 2013-10-16 17:48:41 -07:00
crc32c.cc Dynamically choose SSE 4.2 2014-04-04 14:03:19 -07:00
crc32c.h Add appropriate LICENSE and Copyright message. 2013-10-16 17:48:41 -07:00
dynamic_bloom_test.cc Fix more gflag namespace issues 2014-05-09 08:41:02 -07:00
dynamic_bloom.cc Pass logger to memtable rep and TLB page allocation error logged to info logs 2014-05-05 16:43:37 -07:00
dynamic_bloom.h Pass logger to memtable rep and TLB page allocation error logged to info logs 2014-05-05 16:43:37 -07:00
env_hdfs.cc Improve EnvHdfs 2014-05-14 12:14:18 -07:00
env_posix.cc ThreadPool to allow decrease number of threads and increase of number of threads is to be instantly scheduled 2014-05-19 11:52:12 -07:00
env_test.cc ThreadPool to allow decrease number of threads and increase of number of threads is to be instantly scheduled 2014-05-19 11:52:12 -07:00
env.cc Renamed InfoLogLevel::DEBUG to InfoLogLevel::DEBUG_LEVEL 2014-04-10 15:27:42 -07:00
filelock_test.cc Add appropriate LICENSE and Copyright message. 2013-10-16 17:48:41 -07:00
filter_policy.cc Add appropriate LICENSE and Copyright message. 2013-10-16 17:48:41 -07:00
hash_cuckoo_rep.cc Pass logger to memtable rep and TLB page allocation error logged to info logs 2014-05-05 16:43:37 -07:00
hash_cuckoo_rep.h Pass logger to memtable rep and TLB page allocation error logged to info logs 2014-05-05 16:43:37 -07:00
hash_linklist_rep.cc HashLinkedList::Iterator: remove an ununsed class variable 2014-05-08 13:28:52 -07:00
hash_linklist_rep.h Pass logger to memtable rep and TLB page allocation error logged to info logs 2014-05-05 16:43:37 -07:00
hash_skiplist_rep.cc Pass logger to memtable rep and TLB page allocation error logged to info logs 2014-05-05 16:43:37 -07:00
hash_skiplist_rep.h Pass logger to memtable rep and TLB page allocation error logged to info logs 2014-05-05 16:43:37 -07:00
hash.cc Add a hash-index component for block 2014-03-03 21:11:49 -08:00
hash.h Add appropriate LICENSE and Copyright message. 2013-10-16 17:48:41 -07:00
histogram_test.cc Add appropriate LICENSE and Copyright message. 2013-10-16 17:48:41 -07:00
histogram.cc Statistics code cleanup 2014-01-17 12:46:06 -08:00
histogram.h Statistics code cleanup 2014-01-17 12:46:06 -08:00
ldb_cmd_execute_result.h Revert "Don't compile ldb tool into static library" 2014-04-15 11:29:02 -07:00
ldb_cmd.cc Support for adding TTL-ed column family 2014-04-28 20:34:20 -07:00
ldb_cmd.h Support for adding TTL-ed column family 2014-04-28 20:34:20 -07:00
ldb_tool.cc RocksDBLite 2014-04-15 13:39:26 -07:00
log_buffer.cc Fix data corruption by LogBuffer 2014-03-21 15:32:48 -07:00
log_buffer.h Fix errors while building with clang 2014-05-15 12:34:53 +08:00
log_write_bench.cc Fix more gflag namespace issues 2014-05-09 08:41:02 -07:00
logging.cc Clean up compaction logging 2014-05-14 12:13:50 -07:00
logging.h Clean up compaction logging 2014-05-14 12:13:50 -07:00
manual_compaction_test.cc Fix CompactRange to apply filter to every key 2014-01-14 16:19:09 -08:00
murmurhash.cc Add appropriate LICENSE and Copyright message. 2013-10-16 17:48:41 -07:00
murmurhash.h Add a hash-index component for block 2014-03-03 21:11:49 -08:00
mutexlock.h Add appropriate LICENSE and Copyright message. 2013-10-16 17:48:41 -07:00
options.cc TablePropertiesCollectorFactory 2014-05-13 12:30:55 -07:00
perf_context_imp.h macros for perf_context 2014-04-08 10:58:07 -07:00
perf_context.cc macros for perf_context 2014-04-08 10:58:07 -07:00
posix_logger.h Renamed InfoLogLevel::DEBUG to InfoLogLevel::DEBUG_LEVEL 2014-04-10 15:27:42 -07:00
random.h Add appropriate LICENSE and Copyright message. 2013-10-16 17:48:41 -07:00
signal_test.cc Print out stack trace in mac, too 2014-04-23 09:11:35 -04:00
skiplistrep.cc Pass logger to memtable rep and TLB page allocation error logged to info logs 2014-05-05 16:43:37 -07:00
slice.cc FixedPrefixTransform to include prefix length in its name 2014-05-13 16:08:21 -07:00
statistics.cc convert Tickers back to array with padding and alignment 2014-01-29 15:08:41 -08:00
statistics.h cache SuperVersion in thread local storage to avoid mutex lock 2014-02-27 11:38:55 -08:00
stats_logger.h Add appropriate LICENSE and Copyright message. 2013-10-16 17:48:41 -07:00
status.cc IOError cleanup 2014-02-12 11:42:54 -08:00
stl_wrappers.h Killing Transform Rep 2013-12-03 12:42:15 -08:00
stop_watch.h Statistics code cleanup 2014-01-17 12:46:06 -08:00
string_util.cc Turn on -Wmissing-prototypes 2014-04-09 21:17:14 -07:00
string_util.h Turn on -Wmissing-prototypes 2014-04-09 21:17:14 -07:00
sync_point.cc Don't compile sync_point if NDEBUG 2014-04-17 10:49:58 -07:00
sync_point.h Fix ifdef NDEBUG 2014-04-17 14:29:28 -07:00
testharness.cc Better stack trace in MAC 2014-04-25 09:50:51 -04:00
testharness.h Print out stack trace in mac, too 2014-04-23 09:11:35 -04:00
testutil.cc Add appropriate LICENSE and Copyright message. 2013-10-16 17:48:41 -07:00
testutil.h [Performance Branch] PlainTable to encode rows with seqID 0, value type using 1 internal byte. 2014-02-03 12:19:30 -08:00
thread_local_test.cc simplify ThreadLocalPtr a little bit 2014-04-22 21:13:34 -07:00
thread_local.cc simplify ThreadLocalPtr a little bit 2014-04-22 21:13:34 -07:00
thread_local.h simplify ThreadLocalPtr a little bit 2014-04-22 21:13:34 -07:00
vectorrep.cc Pass logger to memtable rep and TLB page allocation error logged to info logs 2014-05-05 16:43:37 -07:00
xxhash.cc xxHash 2014-05-01 14:09:32 -04:00
xxhash.h xxHash 2014-05-01 14:09:32 -04:00