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This removes the XP compatibility code, and switches entirely to SWR
locks, which are available starting at Windows Vista.
This removes CRITICAL_SECTION use, which allows us to add
PTHREAD_MUTEX_INITIALIZER, which will be useful later.
Windows XP is hereby not a supported build target anymore. It was
decided in a project vote that this is OK.
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Benchmark (with 2 cpus):
./ffmpeg -f rawvideo -s 1280x720 -t 1000 -i /dev/zero \
-filter_threads $threads -vf transpose=clock -f null null
threads=2:
old: 31.129s 31.446s 31.574s
new: 29.602s 29.636s 29.656s
threads=3 (nb_threads = nb_cpus + 1 is bad choice at this situation):
old: 40.132s 40.279s 40.279s
new: 39.308s 39.570s 39.693s
threads=4:
old: 31.306s 31.366s 31.654s
new: 30.231s 30.360s 30.451s
Signed-off-by: Muhammad Faiz <mfcc64@gmail.com>
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If ret is NULL, a dummy common holder is created to hold *all* the
parallel function returns, which gets written concurrently. This commit
simplify the whole logic by simply not writing to that holder when not
set.
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* commit '29c2d06d67724e994980045afa055c6c34611b30':
cosmetics: Drop empty comment lines
Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
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This was somehow forgotten in a8bb81a05c519dd3f36cc341e5fb448f6d17fa73.
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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
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This is similar to 5152196b2b47d446d9a509b9bfb318daa26a1f2b.
Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
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This is similar to 5152196b2b47d446d9a509b9bfb318daa26a1f2b.
Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
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* commit 'eb90a2091ffb94d8c29aaa5ff50f4192520254fc':
pthread: Fix deadlock during thread initialization
Conflicts:
libavcodec/pthread.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>
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Sometimes, if pthread_create() failed, then pthread_cond_wait() could
accidentally be called in the worker threads after the uninit function
had already called pthread_cond_broadcast(), leading to a deadlock.
Don't call pthread_cond_wait() if c->done is set.
Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
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* qatar/master:
lavfi: allow user-provided execute() callbacks
Conflicts:
libavfilter/avfilter.h
libavfilter/version.h
Merged-by: Michael Niedermayer <michaelni@gmx.at>
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* commit '50612484e058e8b241f0528584d64d9d2ccebf12':
pthread: Rename thread_init to avoid symbol collision
Conflicts:
libavcodec/pthread.c
libavfilter/pthread.c
See: 674d8a9629609a17fd6916164556cb012d6e6a1c
Merged-by: Michael Niedermayer <michaelni@gmx.at>
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The AIX threads library exposes a function with the same name.
Signed-off-by: Martin Storsjö <martin@martin.st>
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The aix header sys/thread.h contains a definition for thread_init().
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For useage in other places besides lavc. Needed after commit
90f9a5830b5d332de7ebb1ab45589f1870cbd65d
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
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Also print the message just once
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
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* commit '129bb238430ec45a3b5f8f1d384df590ddf7b62f':
lavfi: add a slice threading infrastructure
Conflicts:
Changelog
cmdutils.c
doc/APIchanges
libavfilter/Makefile
libavfilter/avfilter.c
libavfilter/avfilter.h
libavfilter/avfiltergraph.c
libavfilter/internal.h
libavfilter/version.h
Merged-by: Michael Niedermayer <michaelni@gmx.at>
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Mostly based on libavcodec's
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