Hi, I am working with the Movie library and import processing.video.*.

My program is pretty simple (~100 lines). It does nothing but read a bunch of video files and display them. But it invariably leaks memory and eventually segfaults or throws an exception. I have read the known problems doc, but did not find anything. I am running Processing 1.0.9 on MacOSX version 10.5.8. I've sprinkled System.gc() in various logical places, but that doesn't make a difference.

Here are the errors I see:

Either:

Invalid memory access of location 0xffffffff eip=0x9677c57f

Or:

Exception in thread "Animation Thread" java.lang.ArrayIndexOutOfBoundsException
     at java.lang.System.arraycopy(Native Method)
     at processing.core.PGraphics2D.simple_image(PGraphics2D.java:1487)
     at processing.core.PGraphics2D.imageImpl(PGraphics2D.java:1407)
     at processing.core.PGraphics.image(PGraphics.java:2221)
     at processing.core.PGraphics.image(PGraphics.java:2197)
     at processing.core.PApplet.image(PApplet.java:7286)
     at sketch_dec11a.draw(sketch_dec11a.java:68)
     at processing.core.PApplet.handleDraw(PApplet.java:1425)
     at processing.core.PApplet.run(PApplet.java:1327)
     at java.lang.Thread.run(Thread.java:613)
java(11115,0xa08d2720) malloc: *** error for object 0x77a1fe80: double free
*** set a breakpoint in malloc_error_break to debug

Here is the program:

import processing.video.*;
import java.util.Vector;

// a very simple sketch that leaks memory all over the place,
// eventually segfaulting or throwing an exception.
int tileWidth = 640;
int tileHeight = 480;
Movie movie;
int numFiles = 0;
int[] order;
int curMovie = 0;
Vector fileNames = new Vector();

void setup() {
 // list all the files and pick those ending in .AVI
 File[] allFiles = new
     File("/Users/stein/Documents/Processing/summer05/Clips/").listFiles();
 for (int i = 0; i < allFiles.length; i++) {
   String movieFileName = allFiles[i].getAbsolutePath();
   if (movieFileName.endsWith(".AVI")) {
     fileNames.add(movieFileName);
   }
 }
 size(tileWidth, tileHeight, P2D);
 // load the movie into the slot
 int movieNum = (curMovie ++) % fileNames.size();
 String movieFileName = fileNames.get(movieNum).toString();
 print("loading " + movieFileName + "\n");
 movie = new Movie(this, movieFileName);
 movie.play();
 movie.speed(16.0);
}

void draw() {
 if (movie.duration() == movie.time()) {
   // done. load a new movie
   movie.stop();
   movie = null;
   System.gc();
   int movieNum = (curMovie ++) % fileNames.size();
   String movieFileName = fileNames.get(movieNum).toString();
   movie = new Movie(this, movieFileName);
   movie.play();
   movie.speed(16.0);
 }
 image(movie, 0, 0, tileWidth, tileHeight);
 System.gc();
}

void movieEvent(Movie m) {
 m.read();
}

That is not it. I put a try-catch around that and the exception is not there.

Anyways, the exception is just a symptom of the memory leak.

Memory just grows and grows until the system breaks in some way. Here is another way it breaks (at this point it's using about 2.4GB of VM):

Exception
*** error: can't allocate region
*** set a breakpoint in malloc_error_break to debug

in thread "Thread-311" java.lang.OutOfMemoryError: requested 307200 bytes for jint in /SourceCache/HotSpot15/HotSpot15-141/src/share/vm/prims/jni.cpp. Out of swap space?

I've done various things like sprinkling System.gc() throughout the code, and explicitly setting the movie to null before re-initializing it.