[x264-devel] threading problem on NetBSD

[hbent at cs.oberlin.edu]

Hi all,

I am running NetBSD 4.99.72 and have been having problems with x264
stalling any time I use more than one thread.  It will get a varying
length of the way through the file I'm trying to encode - it seems to
differ each time - and just stop, dead.  I built x264 with --enable-debug
and attached gdb to the process once it stopped, and here's what I got:

(gdb) where
#0  0xbbaeac67 in _lwp_park () from /usr/lib/libc.so.12
#1  0xbbbc8b14 in pthread_cond_wait () from /usr/lib/libpthread.so.0
#2  0x080630f5 in x264_frame_cond_wait (frame=0xbb3fe010,
i_lines_completed=40)
    at common/frame.c:868
#3  0x08077f52 in x264_macroblock_analyse (h=0xbb94c010) at
encoder/analyse.c:272
#4  0x080555b9 in x264_slice_write (h=0xbb94c010) at encoder/encoder.c:1156
#5  0x08055c34 in x264_stack_align ()
#6  0x0805162f in x264_slices_write (h=0xbb94c010) at encoder/encoder.c:1299
#7  0xbbbcaaf7 in pthread_create () from /usr/lib/libpthread.so.0
#8  0xbbb0cfe0 in swapcontext () from /usr/lib/libc.so.12

I would be happy to provide any more information that might be needed for
debugging this problem.

-Henry Bent