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* qatar/master:
atomics: cosmetics: Restructure ifdefs for greater clarity
Merged-by: Michael Niedermayer <michaelni@gmx.at>
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Also fix the #endif comment in a few places and #include config.h to
avoid assuming it is #included implicitly.
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* commit 'f9f6402e9c9ce3642df981b48507df3a2d956f65':
configure: prettify atomics handling.
Conflicts:
configure
Merged-by: Michael Niedermayer <michaelni@gmx.at>
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Add simpler names and a shorthand for native atomics (as opposed to
pthreads fallback).
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The mingw win32 atomics appear to be faulty, so they should not be used
if the gcc ones are available.
Signed-off-by: Martin Storsjö <martin@martin.st>
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Not all gcc configurations have an implementation of all the atomic
operations, and some gcc configurations have some atomic builtins
implemented but not all.
Thus check for the most essential function, whose presence should
indicate that all others are present as well, since it can be used
to implement all the other ones.
Signed-off-by: Martin Storsjö <martin@martin.st>
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The mingw win32 atomics appear to be faulty, so they should not be used
if the gcc ones are available.
Signed-off-by: Martin Storsjö <martin@martin.st>
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* commit '65f1d45dcc71186ede72fff950996099d23359bd':
lavu: add support for atomic operations.
Conflicts:
configure
Merged-by: Michael Niedermayer <michaelni@gmx.at>
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Not all gcc configurations have an implementation of all the atomic
operations, and some gcc configurations have some atomic builtins
implemented but not all.
Thus check for the most essential function, whose presence should
indicate that all others are present as well, since it can be used
to implement all the other ones.
Signed-off-by: Martin Storsjö <martin@martin.st>
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These could be used for reference counting, or for keeping track of
decoding progress in references in multithreaded decoders.
Support is provided by gcc/msvc/suncc intrinsics, with a fallback using
pthread mutexes.
Signed-off-by: Anton Khirnov <anton@khirnov.net>
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