OutOfMemory in MuPdf

Question

Hello I am using MuPdf library in my project to view documents. The problem is that when you open 3-7 documents in a activity 11 inches on the tablet, i get memory overflow. When you load a new document, all references to the previous document are destroyed, but the image of the document from memory are not removed. objects are created in the memory image of 10-12 megabytes. on tablet the size of 7 inches this problem does not arise.

Maybe someone encountered this problem?

I'm also looking for a solution. I received a outofmemory error when i open and close in different page the pdf activity. If mupdf render in low quality there is no problem, but when it render in HQ (so mainly in portrait mode at full screen page in a tablet 10.1) it goes overvflow — markov00, May 13 '12 at 22:45
mupdf try to update from the repository, I have a problem disappeared. — alezhka, May 14 '12 at 08:43

score 2 · Answer 1 · edited Feb 28 '14 at 06:43

2

This problem is resolved by calling recycle() on bitmap in relaeseBitmaps() method of PageView.java

public void releaseBitmaps() {
        reinit();
        mEntireBm.recycle();
        mPatchBm.recycle();
        mEntireBm = null;
        mPatchBm = null;
    }

edited Feb 28 '14 at 06:43

Paresh Mayani

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answered Feb 28 '14 at 06:24

Amulya Maheshwari

41
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This solved the OutOfMemoryError I was getting after about ~10 PDF opens. Thanks for this! – retromuz Jul 07 '14 at 07:02

Sunny Kumar Aditya · Answer 2 · 2012-09-05T19:34:27.173

0

Inside mupdf.c find

"/* 128 MB store for low memory devices. Tweak as necessary. */" and

change the memory limit and try

I tried with 512 the rendering is faster than before

edited Sep 05 '12 at 19:34

answered Jun 05 '12 at 05:59

Sunny Kumar Aditya

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You cannot fix memory leaks this way! – retromuz Jul 07 '14 at 08:22

GoalGinger · Answer 3 · 2012-07-31T09:23:00.313

I added the following code to force garbage collector in PageView.java and it seems to work okay so far.

if (mEntireBm == null || mEntireBm.getWidth() != newSize.x
                              || mEntireBm.getHeight() != newSize.y) {
            mEntireBm = Bitmap.createBitmap(mSize.x, mSize.y, Bitmap.Config.ARGB_8888);
            System.gc();//Added
            Runtime.getRuntime().gc();//Added
        }

Edited: it crashes after open the file several times

score -1 · Answer 4 · answered Aug 07 '13 at 00:53

-1

Edit mupdf.c

Change: /* 128 MB store for low memory devices. Tweak as necessary. */ glo->ctx = ctx = fz_new_context(NULL, NULL, 128 << 20); to /* 128 MB store for low memory devices. Tweak as necessary. */ glo->ctx = ctx = fz_new_context(NULL, NULL, 32 << 20);

That`s all. Max heap memory amount ~50Mb.

answered Aug 07 '13 at 00:53

3draven

31
4

You cannot fix memory leaks this way. – retromuz Jul 07 '14 at 08:21

OutOfMemory in MuPdf

4 Answers4

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