- try {
- // We must write the lib onto the disk before loading it -- stupid operating systems
- File fileOut = new File(filename);
- fileOut = File.createTempFile(name+"-", ".tmp");
- // don't leak the file on disk, but remove it on JVM shutdown
- Runtime.getRuntime().addShutdownHook(new Thread(new FileCleaner(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 "+name+" library: ");
- e.printStackTrace();
- System.err.println("This jar file does not seem to fit your system, sorry");
- System.exit(1);
+
+ 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);
+ }