[FFmpeg-devel] mem leak on windows xp sp2
Tue Nov 24 19:47:22 CET 2009
I am pretty certain I have found a memory leak that occurs on windows xp
sp2. I have included a test file that I have run on windows xp, vista as
well as linux. The only one in which there is a memory leak is xp. So far,
I have found this using audio files (.mp3 or .wav).
Compile: gcc -otestffmpeg testffmpeg.c -I . -L -lavformat -lavcodec
Run: testffmpeg <pathandfilenameheretoaudiofile>
Get the file here: http://ffmpeg.pastebin.com/m5940ac6d
There are two pauses in the test program allowing to track the number of
bytes consumed by the process before and after the function call. Note that
the buffer in which the signal is put is allocated before and free'd after
these two pauses, so the extra memory used is not from this buffer.
The number of private bytes jumps from 143,257,600 to 157110272
The number of virtual bytes jumps from 152, 702, 976 to 168, 435, 712
When reading in many files in a loop, the excess memory accumulates rather
This appears to be the offending stack trace from umdh utility:
35955144 ( 35955144 - 0) 8727 allocs BackTrace234
+ 8727 ( 8727 - 0) BackTrace234 allocations
I hope I have provided enough information here. I am more than happy to
attempt a patch, if someone has any suggestions as to what the cause could
be. If not, does anyone have a workaround?
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