基于Java的程序监控API Java Simon.zip

#summary readme.txt included in the download = Java Simon - Simple Monitors for Java = Version: 3.2.1 This software is distributed under the terms of the FSF Lesser Gnu Public License: * check "lgpl.txt" in the root directory of the project * or check it online http://www.gnu.org/licenses/lgpl.html Check this readme online for updates: http://code.google.com/p/javasimon/wiki/Readme For development and building see: http://code.google.com/p/javasimon/wiki/Development == Getting started == Easiest way to start with Java Simon is adding Maven depndencies into your Maven project. See http://code.google.com/p/javasimon/wiki/MavenSupport for more. A monitors in Java Simon is called "Simon". There are two types of Simons available: `Counter` and `Stopwatch`. Counter tracks single long value, its maximum and minimum. Stopwatch measures time and tracks number of measurements (splits), total time, split minimum and maximum, etc. === Simon Manager === You obtain Simons from the `SimonManager`: {{{ Stopwatch stopwatch = SimonManager.getStopwatch("org.javasimon.examples.HelloWorld-stopwatch"); }}} Here we obtained stopwatch Simon. If the Simon is accessed first time it is created. If you access existing Simon, type of the Simon must match - you can't create counter with the same name (unless you destroy the Simon first). === Stopwatch === Using stopwatch is simple: {{{ Split split = stopwatch.start(); // returns split object // here goes the measured code long time = split.stop(); // returns the split time in ns }}} After few runs of your measured code you can get additional information from stopwatch: {{{ long totalNanos = stopwatch.getTotal(); long maxSplit = stopwatch.getMax(); long minSplit = stopwatch.getMin(); }}} You can use convenient utility to print the results (note ns/us/ms/s unit after the number): {{{ System.out.println("Total time: " + SimonUtils.presentNanoTime(totalNanos)); }}} Or simply print the Simon itself, it has nice `toString` output. For more check other Resources (lower), you may head to GettingStarted wiki page: http://code.google.com/p/javasimon/wiki/GettingStarted == Resources == Project is hosted on Google Code as "javasimon": * Homepage: http://www.javasimon.org * Project page: http://code.google.com/p/javasimon/ * Download: http://code.google.com/p/javasimon/downloads/list * Javadoc API: http://javasimon.googlecode.com/svn/javadoc/api-3.2/index.html * Source browser: http://code.google.com/p/javasimon/source/browse/ * Issue tracker: http://code.google.com/p/javasimon/issues/list * Ohloh page: http://www.ohloh.net/p/javasimon Project uses following libraries (for Ant build, check dependencies in POMs for Maven build): * TestNG: http://testng.org/ (test only) * `testng-6.5.2.jar` * `jcommander-1.12.jar` * Spring (core/aop/beans/web/webmvc/test/...): http://www.springsource.org/ (Spring integration) * `org.springframework.*-3.1.1.RELEASE.jar` * `aopalliance-1.0.jar` * `commons-logging-1.1.1.jar` * SLF4J logging: http://www.slf4j.org/ (logging callback in core module, may not be required during runtime) * `slf4j-api-1.6.4.jar` * H2 Database: http://www.h2database.com/ (examples) * `h2-1.3.166.jar` * Java EE libraries for Java EE module compilation: * `servlet-api-2.5.jar` * `javaee-api-6.0.jar` * `geronimo-servlet_3.0_spec-1.0.jar` (this one is needed for test run) == Java Simon name == *Java Simon* is the official name of the project with _Simple Monitoring API_ as a subtitle. Codename of the project is *javasimon*. We use word Simon as a synonym for a "monitor" in javadoc or on our wiki - of course we use it only for monitors based on the API. We write Simon mostly with capital S, Java Simon with space and javasimon as a one word with all lowercase. Word javasimon is probably best to use in search engines.