+++ /dev/null
-/* Copyright (c) 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. */
-
-package org.simgrid;
-
-import java.io.FileOutputStream;
-import java.io.InputStream;
-import java.io.IOException;
-import java.io.OutputStream;
-import java.io.File;
-import java.nio.file.Files;
-import java.nio.file.Path;
-
-public final class NativeLib {
- /* Statically load the library which contains all native functions used in here */
- private static boolean isNativeInited = false;
- static Path tempDir = null;
-
- private NativeLib() {
- throw new IllegalAccessError("Utility class");
- }
-
- public static void nativeInit() {
- if (isNativeInited)
- return;
-
- if (System.getProperty("os.name").toLowerCase().startsWith("win"))
- NativeLib.nativeInit("winpthread-1");
-
- NativeLib.nativeInit("simgrid");
- NativeLib.nativeInit("simgrid-java");
- isNativeInited = true;
- }
-
- public static void nativeInit(String name) {
- try {
- /* Prefer the version of the library bundled into the jar file and use it */
- loadLib(name);
- } catch (LinkageException embeededException) {
- /* If not found, try to see if we can find a version on disk */
- try {
- System.loadLibrary(name);
- } catch (UnsatisfiedLinkError systemException) {
- if (! "boost_context".equals(name)) { // Ignore when we cannot load boost_context
-
- System.err.println("\nCannot load the bindings to the "+name+" library in path "+getPath());
- Throwable cause = embeededException.getCause();
- if (cause instanceof java.lang.UnsatisfiedLinkError) {
- if (cause.getMessage().matches(".*libcgraph.so.*"))
- System.err.println("HINT: Try to install the libcgraph package (sudo apt-get install libcgraph).");
- else if (cause.getMessage().matches(".*libboost_context.so.*"))
- System.err.println("HINT: Try to install the boost-context package (sudo apt-get install libboost-context-dev).");
- else
- System.err.println("Try to install the missing dependencies, which name should appear above.");
- } else {
- System.err.println("This jar file does not seem to fit your system, and no usable SimGrid installation found on disk.");
- }
- System.err.println();
- cause.printStackTrace();
- System.exit(1);
- }
- }
- }
- }
-
- public static String getPath() {
- // Inspiration: https://github.com/xerial/snappy-java/blob/develop/src/main/java/org/xerial/snappy/OSInfo.java
- String prefix = "NATIVE";
- String os = System.getProperty("os.name");
- String arch = System.getProperty("os.arch");
-
- if (arch.matches("^i[3-6]86$"))
- arch = "x86";
- else if ("x86_64".equalsIgnoreCase(arch))
- arch = "amd64";
- else if ("AMD64".equalsIgnoreCase(arch))
- arch = "amd64";
-
- if (os.toLowerCase().startsWith("win")){
- os = "Windows";
- } else if (os.contains("OS X"))
- os = "Darwin";
-
- os = os.replace(' ', '_');
- arch = arch.replace(' ', '_');
-
- return prefix + "/" + os + "/" + arch + "/";
- }
-
- private static void loadLib (String name) throws LinkageException {
- String path = NativeLib.getPath();
-
- String filename=name;
- InputStream in = NativeLib.class.getClassLoader().getResourceAsStream(path+filename);
-
- if (in == null) {
- filename = "lib"+name+".so";
- in = NativeLib.class.getClassLoader().getResourceAsStream(path+filename);
- }
- if (in == null) {
- filename = name+".dll";
- in = NativeLib.class.getClassLoader().getResourceAsStream(path+filename);
- }
- if (in == null) {
- filename = "lib"+name+".dll";
- in = NativeLib.class.getClassLoader().getResourceAsStream(path+filename);
- }
- if (in == null) {
- filename = "lib"+name+".dylib";
- in = NativeLib.class.getClassLoader().getResourceAsStream(path+filename);
- }
- if (in == null) {
- throw new LinkageException("Cannot find library "+name+" in path "+path+". Sorry, but this jar does not seem to be usable on your machine.");
- }
- try {
- // We must write the lib onto the disk before loading it -- stupid operating systems
- if (tempDir == null) {
- tempDir = Files.createTempDirectory("simgrid-java-");
- // don't leak the files on disk, but remove it on JVM shutdown
- Runtime.getRuntime().addShutdownHook(new Thread(new FileCleaner(tempDir.toFile())));
- }
- File fileOut = new File(tempDir.toFile().getAbsolutePath() + File.separator + filename);
-
- /* copy the library in position */
- OutputStream out = new FileOutputStream(fileOut);
- byte[] buffer = new byte[4096];
- int bytesRead;
- while ((bytesRead = in.read(buffer)) != -1) // Read until EOF
- out.write(buffer, 0, bytesRead);
-
- /* close all file descriptors, and load that shit */
- in.close();
- out.close();
- System.load(fileOut.getAbsolutePath());
- } catch (SecurityException|UnsatisfiedLinkError|IOException e) {
- throw new LinkageException("Cannot load the bindings to the "+name+" library in path "+getPath(), e);
- }
- }
-
- /* A hackish mechanism used to remove the file containing our library when the JVM shuts down */
- private static class FileCleaner implements Runnable {
- private File dir;
- public FileCleaner(File dir) {
- this.dir = dir;
- }
- @Override
- public void run() {
- try {
- for (File f : dir.listFiles())
- if (! f.delete() )
- System.err.println("Unable to clean temporary file "+f.getAbsolutePath()+" during shutdown.");
- if (! dir.delete() )
- System.err.println("Unable to clean temporary file "+dir.getAbsolutePath()+" during shutdown.");
- } catch(Exception e) {
- System.err.println("Unable to clean temporary file "+dir.getAbsolutePath()+" during shutdown: "+e.getCause());
- e.printStackTrace();
- }
- }
- }
-
-
- public static void main(String[] args) {
- System.out.println("This jarfile searches the native code under: " +getPath());
- }
-}
-
-class LinkageException extends Exception {
- private static final long serialVersionUID = 1L;
- public LinkageException(String msg) {
- super(msg);
- }
-
- public LinkageException(String msg, Throwable e) {
- super(msg,e);
- }
-}
