On Tue, Apr 04, 2017 at 09:09:36AM -0400, Ronald S. Bultje wrote: > This fixes the following tsan warnings when running fate-dnxhr-parse: > > WARNING: ThreadSanitizer: data race (pid=29917) > Write of size 8 at 0x0000025b12d8 by thread T2 (mutexes: write M1543): > #0 ff_idctdsp_init src/libavcodec/idctdsp.c:313 (ffmpeg+0x00000044b68e) > [..] > Previous write of size 8 at 0x0000025b12d8 by thread T1 (mutexes: write > M1541): > #0 ff_idctdsp_init src/libavcodec/idctdsp.c:313 (ffmpeg+0x00000044b68e) > --- > libavcodec/idctdsp.c | 8 ++++---- > libavcodec/idctdsp.h | 17 +++++++++++++++-- > 2 files changed, 19 insertions(+), 6 deletions(-)
does this have any performance effect and why do 2 threads write into the same variable ? It seems rather suspicious that 2 diferent threads write into the same pointer [...] -- Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB The worst form of inequality is to try to make unequal things equal. -- Aristotle
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