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February 2006

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2006.02.13 14:13 "Memory leak in TIFFOpen on Win32 ?", by Thierry Pierron

2006.02.13 15:25 "Re: Memory leak in TIFFOpen on Win32 ?", by Bernie Pallek

2006.02.13 16:05 "Re: Memory leak in TIFFOpen on Win32 ?", by Bob Friesenhahn

2006.02.13 18:50 "Re: Memory leak in TIFFOpen on Win32 ?", by Thierry Pierron

2006.02.13 14:13 "Memory leak in TIFFOpen on Win32 ?", by Thierry Pierron

Hi all,

Just try the following code :

#include <stdio.h>
#include <tiffio.h>

int main(int argc, char *argv[])
{
	int i;

	for (i = 10; i > 0; i --)
	{
		printf("Starting in %d ...\r", i); fflush(stdout);
		sleep(1);
	}

	for (i = 0; i < 10000; i ++)
	{
		TIFF * in = TIFFOpen("cyan.tif", "r");
		if (in) TIFFClose(in);
	}
	sleep(20);
	return 0;
}

What I notice is that memory usage increased without going down at any 
moment. I'm using GnuWin32 v3.8.0 self-installer package on Windows 
2000, and compiled this test with MinGW. The test file can be 
downloaded from http://216.113.38.184/download/cyan.tif   (3.9M). This 
is a 10800x13200 8bits monochrome tiled TIFF file, compressed with 
deflate method and which was generated by libTIFF itself (v3.7.3).

I also run this test on Linux and Mac OS X, with sources downloaded 
from ftp, and have not seen any problem.

Does someone else notice that strange side effect ?
-- 
Thierry Pierron
Polkadots Software Inc.
2501 Dollard
Lasalle, QC
H8N 1S2 Canada