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author | Egil Moeller <egil.moller@freecode.no> | 2010-03-21 23:33:06 +0100 |
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committer | Egil Moeller <egil.moller@freecode.no> | 2010-03-21 23:33:06 +0100 |
commit | d56b9b3b82cdebcaeb00eec0fcb4326ad21adaa8 (patch) | |
tree | b1dfe31956f3fc86e3408f1efac5e12acf65b11a /infrastructure/net.appjet.ajstdlib/timer.scala | |
parent | c1894c8e0a52f4e3d2f89fa92f0066bbf0fcf1b1 (diff) | |
parent | 103d4926ae6c61824dc0b48be7bf66f08830ed47 (diff) | |
download | etherpad-d56b9b3b82cdebcaeb00eec0fcb4326ad21adaa8.tar.gz etherpad-d56b9b3b82cdebcaeb00eec0fcb4326ad21adaa8.tar.bz2 etherpad-d56b9b3b82cdebcaeb00eec0fcb4326ad21adaa8.zip |
Merge branch 'master' of git@github.com:ether/pad
Diffstat (limited to 'infrastructure/net.appjet.ajstdlib/timer.scala')
-rw-r--r-- | infrastructure/net.appjet.ajstdlib/timer.scala | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/infrastructure/net.appjet.ajstdlib/timer.scala b/infrastructure/net.appjet.ajstdlib/timer.scala new file mode 100644 index 0000000..dac8fb6 --- /dev/null +++ b/infrastructure/net.appjet.ajstdlib/timer.scala @@ -0,0 +1,85 @@ +/** + * Copyright 2009 Google Inc. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS-IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package net.appjet.ajstdlib; + +import scala.collection.mutable.{HashMap,ListBuffer}; +import java.util.concurrent.locks.ReentrantLock; + +object timer { + + var _timings = new HashMap[String,ListBuffer[double]]; + var _lock = new ReentrantLock; + var _callstack = new ThreadLocal[ListBuffer[String]]; + + def start(opname: String) = { + var _localcallstack = _callstack.get(); + if (_localcallstack == null) { + _callstack.set(new ListBuffer[String]); + _localcallstack = _callstack.get(); + } + _localcallstack += opname; + var _oplabel = _localcallstack.mkString("."); + val startTime: long = System.nanoTime(); + + new { + def done() { + val elapsedTimeMs: double = (System.nanoTime() - startTime) / 1.0e6; + + _lock.lock(); + try { + var times = _timings.getOrElse(_oplabel, new ListBuffer[double]); + /* + if (times.size > 100000) { + times = new ListBuffer[double]; + }*/ + times += elapsedTimeMs; + _timings.put(_oplabel, times); + _localcallstack.remove(_localcallstack.length-1); + } finally { + _lock.unlock(); + } + } + } + } + + def getOpNames(): Array[String] = { + _lock.lock(); + try { + return _timings.keys.toList.toArray; + } finally { + _lock.unlock(); + } + } + + def getStats(opname: String): Array[double] = { + _lock.lock(); + + try { + var times:ListBuffer[double] = _timings(opname); + var total = times.foldRight(0.0)(_ + _); + return Array(times.size, total, (total / times.size)); + } finally { + _lock.unlock(); + } + } + + def reset() { + _lock.lock(); + _timings = new HashMap[String,ListBuffer[double]]; + _lock.unlock(); + } +} |