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;
* containing a call to this.
*/
public final class NativeLib {
+ private static final boolean windowsOs = System.getProperty("os.name").toLowerCase().startsWith("win");
private static boolean isNativeInited = false;
private static Path tempDir = null; // where the embeeded libraries are unpacked before loading them
if (isNativeInited)
return;
- if (System.getProperty("os.name").toLowerCase().startsWith("win"))
+ if (windowsOs)
NativeLib.nativeInit("winpthread-1");
NativeLib.nativeInit("simgrid");
// We must write the lib onto the disk before loading it -- stupid operating systems
if (tempDir == null) {
- tempDir = Files.createTempDirectory("simgrid-java-");
+ final String tempPrefix = "simgrid-java-";
+
+ if (windowsOs) {
+ // 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();
+ try (Stream<Path> paths = Files.find(tmpdir, 1,
+ (Path p, java.nio.file.attribute.BasicFileAttributes a) ->
+ a.isDirectory() && !p.equals(tmpdir) &&
+ p.getFileName().toString().startsWith(tempPrefix))) {
+ paths.map(Path::toFile)
+ .map(FileCleaner::new)
+ .forEach(FileCleaner::run);
+
+ }
+ }
+
+ tempDir = Files.createTempDirectory(tempPrefix);
// don't leak the files on disk, but remove it on JVM shutdown
Runtime.getRuntime().addShutdownHook(new Thread(new FileCleaner(tempDir.toFile())));
}
name+".dll", "lib"+name+".dll", /* windows (pure and mingw) */
"lib"+name+".dylib" /* macOS */}) {
- File fileOut = new File(tempDir.toFile().getAbsolutePath() + File.separator + filename);
- boolean done = false;
+ 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) {
/* 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);
- done = true;
- }
- }
- if (done) {
- /* load that library */
- System.load(fileOut.getAbsolutePath());
+ Files.copy(in, fileOut.toPath());
- /* It loaded! we're good */
- return true;
+ /* load that library */
+ System.load(fileOut.getAbsolutePath());
+
+ /* It loaded! we're good */
+ return true;
+ }
}
}
//.peek(System.err::println) // Prints what gets removed
.forEach(java.io.File::delete);
} catch(Exception e) {
- System.err.println("Error while cleaning temporary file "+dir.getAbsolutePath()+" during shutdown: "+e.getCause());
+ System.err.println("Error while cleaning temporary file " + dir.getAbsolutePath() +
+ ": " + e.getCause());
e.printStackTrace();
}
}