X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/281f8c29e177852dcb1591fc31e363e1176857c8..c80ea3788d692dc92728cefdd199e83a93a6fa25:/src/bindings/java/org/simgrid/msg/Msg.java diff --git a/src/bindings/java/org/simgrid/msg/Msg.java b/src/bindings/java/org/simgrid/msg/Msg.java index 93409c5cf8..b324db8aa4 100644 --- a/src/bindings/java/org/simgrid/msg/Msg.java +++ b/src/bindings/java/org/simgrid/msg/Msg.java @@ -1,132 +1,20 @@ -/* - * JNI interface to C code for MSG. - * - * Copyright (c) 2006-2013. The SimGrid Team. - * All right reserved. - * - * This program is free software; you can redistribute - * it and/or modify it under the terms of the license - * (GNU LGPL) which comes with this package. - */ +/* JNI interface to C code for MSG. */ -package org.simgrid.msg; +/* Copyright (c) 2006-2014. The SimGrid Team. + * All rights reserved. */ + +/* This program is free software; you can redistribute it and/or modify it + * under the terms of the license (GNU LGPL) which comes with this package. */ -import java.io.FileOutputStream; -import java.io.InputStream; -import java.io.OutputStream; -import java.io.File; +package org.simgrid.msg; +import org.simgrid.NativeLib; public final class Msg { - /* Statically load the library which contains all native functions used in here */ - static private boolean isNativeInited = false; - public static void nativeInit() { - if (isNativeInited) - return; - try { - /* prefer the version on disk, if existing */ - System.loadLibrary("simgrid-java"); - } catch (UnsatisfiedLinkError e) { - /* If not found, unpack the one bundled into the jar file and use it */ - loadLib("simgrid"); - loadLib("simgrid-java"); - } - isNativeInited = true; - } - static { - nativeInit(); - } - private static void loadLib (String name) { - String Os = System.getProperty("os.name"); - String Arch = System.getProperty("os.arch"); - // Some OS/Arch may be different between Java and Cmake, - // which generated the path - if (Os.toLowerCase().startsWith("win")) - Os = "Windows"; - else if (Os.contains("OS X")) - Os = "Darwin"; - if (Arch.equalsIgnoreCase("x86")) - Arch = "i386"; - else if (Arch.equalsIgnoreCase("x86_64")) - Arch = "amd64"; - String Path = "NATIVE/" + Os + "/" + Arch + "/"; - - String filename=name; - InputStream in = Msg.class.getClassLoader().getResourceAsStream(Path+filename); - - if (in == null) { - filename = "lib"+name+".so"; - in = Msg.class.getClassLoader().getResourceAsStream(Path+filename); - } - if (in == null) { - filename = name+".dll"; - in = Msg.class.getClassLoader().getResourceAsStream(Path+filename); - } - if (in == null) { - filename = "lib"+name+".dll"; - in = Msg.class.getClassLoader().getResourceAsStream(Path+filename); - } - if (in == null) { - filename = "lib"+name+".dylib"; - in = Msg.class.getClassLoader().getResourceAsStream(Path+filename); - } - if (in == null) { - throw new RuntimeException("Cannot find library "+name+" in path "+Path+". Sorry, but this jar does not seem to be usable on your machine."); - } -// Caching the file on disk: desactivated because it could fool the users -// if (new File(filename).isFile()) { -// // file was already unpacked -- use it directly -// System.load(new File(".").getAbsolutePath()+File.separator+filename); -// return; -// } - try { - // We must write the lib onto the disk before loading it -- stupid operating systems - File fileOut = new File(filename); -// if (!new File(".").canWrite()) { -// System.out.println("Cannot write in ."+File.separator+filename+"; unpacking the library into a temporary file instead"); - fileOut = File.createTempFile("simgrid-", ".tmp"); - // don't leak the file on disk, but remove it on JVM shutdown - Runtime.getRuntime().addShutdownHook(new Thread(new FileCleaner(fileOut.getAbsolutePath()))); -// } -// System.out.println("Unpacking SimGrid native library to " + fileOut.getAbsolutePath()); - OutputStream out = new FileOutputStream(fileOut); - - /* copy the library in position */ - byte[] buffer = new byte[4096]; - int bytes_read; - while ((bytes_read = in.read(buffer)) != -1) // Read until EOF - out.write(buffer, 0, bytes_read); - - /* close all file descriptors, and load that shit */ - in.close(); - out.close(); - System.load(fileOut.getAbsolutePath()); - } catch (Exception e) { - System.err.println("Cannot load the bindings to the simgrid library: "); - e.printStackTrace(); - System.err.println("This jar file does not seem to fit your system, sorry"); - System.exit(1); - } - } - /* A hackish mechanism used to remove the file containing our library when the JVM shuts down */ - private static class FileCleaner implements Runnable { - private String target; - public FileCleaner(String name) { - target = name; - } - public void run() { - try { - new File(target).delete(); - } catch(Exception e) { - System.out.println("Unable to clean temporary file "+target+" during shutdown."); - e.printStackTrace(); - } - } - } - /** Retrieve the simulation time - * @return The simulation time. - */ + /** Retrieve the simulation time + * @return The simulation time. + */ public final static native double getClock(); /** * Issue a debug logging message. @@ -140,8 +28,8 @@ public final class Msg { public final static native void verb(String s); /** Issue an information logging message - * @param s - */ + * @param s + */ public final static native void info(String s); /** * Issue an warning logging message. @@ -179,7 +67,7 @@ public final class Msg { * of a process or the current date is perfectly ok. */ public final static native void run() ; - + /** This function is useless nowadays, just stop calling it. */ @Deprecated public final static void clean(){} @@ -197,15 +85,15 @@ public final class Msg { /** * The method to deploy the simulation. * - * - * @param deploymentFile - */ + * + * @param deploymentFile + */ public final static native void deployApplication(String deploymentFile); - /** Example launcher. You can use it or provide your own launcher, as you wish - * @param args - * @throws MsgException - */ + /** Example launcher. You can use it or provide your own launcher, as you wish + * @param args + * @throws MsgException + */ static public void main(String[]args) throws MsgException { /* initialize the MSG simulation. Must be done before anything else (even logging). */ Msg.init(args); @@ -221,4 +109,9 @@ public final class Msg { /* Execute the simulation */ Msg.run(); } + + /* Class initializer, to initialize various JNI stuff */ + static { + org.simgrid.NativeLib.nativeInit(); + } }