-/* Copyright (c) 2014-2016. The SimGrid Team. All rights reserved. */
+/* Copyright (c) 2014-2019. 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.File;
import java.nio.file.Files;
import java.nio.file.Path;
+import java.util.stream.Stream;
-/** Helper class loading the native functions of SimGrid that we use for downcalls
- *
- * Almost all org.simgrid.msg.* classes contain a static bloc (thus executed when the class is loaded)
+/** Helper class loading the native functions of SimGrid that we use for downcalls
+ *
+ * Almost all org.simgrid.msg.* classes contain a static bloc (thus executed when the class is loaded)
* containing a call to this.
*/
public final class NativeLib {
private static boolean isNativeInited = false;
- static Path tempDir = null; // where the embeeded libraries are unpacked before loading them
+ private static Path tempDir = null; // where the embeeded libraries are unpacked before loading them
/** A static-only "class" don't need no constructor */
private NativeLib() {
throw new IllegalAccessError("Utility class");
}
- /** Hidden debug main() function
- *
+ /** Hidden debug main() function
+ *
* It is not the Main-Class defined in src/bindings/java/MANIFEST.in (org.simgrid.msg.Msg is),
* so it won't get executed by default. But that's helpful to debug linkage errors, if you
* know that it exists. It's used by cmake during the configure, to inform the user.
System.err.println("\nCannot load the bindings to the "+name+" library in path "+getPath()+" and no usable SimGrid installation found on disk.");
if (cause != null) {
- if (cause.getMessage().matches(".*libcgraph.so.*"))
+ if (cause.getMessage().contains("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.*"))
+ else if (cause.getMessage().contains("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, if any. Read carefully the following error message.");
System.err.println();
cause.printStackTrace();
} 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("This jar file does not seem to fit your system, and no usable SimGrid installation found on disk for "+name+".");
}
System.exit(1);
}
// We must write the lib onto the disk before loading it -- stupid operating systems
if (tempDir == null) {
+
+ if (System.getProperty("os.name").toLowerCase().startsWith("win")) {
+ // The cleanup at exit fails on Windows where it is impossible to delete files which are still in
+ // use. Try to remove stale temporary files from previous executions, and limit disk usage.
+ Path tmpdir = (new File(System.getProperty("java.io.tmpdir"))).toPath();
+ Files.find(tmpdir, 1, (Path p, java.nio.file.attribute.BasicFileAttributes a) ->
+ a.isDirectory() && !p.equals(tmpdir) &&
+ p.getFileName().toString().startsWith("simgrid-java-"))
+ .map(Path::toFile)
+ .map(FileCleaner::new)
+ .forEach(FileCleaner::run);
+ }
+
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())));
}
/* For each possible filename of the given library on all possible OSes, try it */
- for (String filename : new String[]
- { name,
+ for (String filename : new String[]
+ { name,
"lib"+name+".so", /* linux */
name+".dll", "lib"+name+".dll", /* windows (pure and mingw) */
- "lib"+name+".dylib" /* mac osx */}) {
+ "lib"+name+".dylib" /* macOS */}) {
- File fileOut = new File(tempDir.toFile().getAbsolutePath() + File.separator + filename);
+ File fileOut = new File(tempDir.toFile(), filename);
try ( // Try-with-resources. These stream will be autoclosed when needed.
InputStream in = NativeLib.class.getClassLoader().getResourceAsStream(path+filename);
- OutputStream out = new FileOutputStream(fileOut);
) {
- if (in == null)
- continue; // Try the next name: no such file found
-
- /* copy the library in position */
- byte[] buffer = new byte[4096];
- int bytesRead;
- while ((bytesRead = in.read(buffer)) != -1) // Read until EOF
- out.write(buffer, 0, bytesRead);
-
- out.close(); // Windows cannot open it twice, so close it first. Shame.
-
- /* load that shit */
- System.load(fileOut.getAbsolutePath());
-
- /* It loaded! we're good */
- return true;
-
+ if (in != null) {
+ /* copy the library in position */
+ Files.copy(in, fileOut.toPath());
+
+ /* load that library */
+ System.load(fileOut.getAbsolutePath());
+
+ /* It loaded! we're good */
+ return true;
+ }
}
}
else if ("x86_64".equalsIgnoreCase(arch) || "AMD64".equalsIgnoreCase(arch))
arch = "amd64";
- if (os.toLowerCase().startsWith("win")){
+ if (os.toLowerCase().startsWith("win")) {
os = "Windows";
- } else if (os.contains("OS X"))
+ } else if (os.contains("OS X")) {
os = "Darwin";
-
+ }
os = os.replace(' ', '_');
arch = arch.replace(' ', '_');
}
@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.");
+ try (Stream<Path> paths = Files.walk(dir.toPath())) {
+ paths.sorted(java.util.Comparator.reverseOrder())
+ .map(java.nio.file.Path::toFile)
+ //.peek(System.err::println) // Prints what gets removed
+ .forEach(java.io.File::delete);
} catch(Exception e) {
- System.err.println("Unable to clean temporary file "+dir.getAbsolutePath()+" during shutdown: "+e.getCause());
+ System.err.println("Error while cleaning temporary file " + dir.getAbsolutePath() +
+ ": " + e.getCause());
e.printStackTrace();
- }
+ }
}
}
}
