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21b4aa5d20
This adds two test programs in tools/io_uring/ that demonstrate both the raw io_uring API (and all features) through a small benchmark app, io_uring-bench, and the liburing exposed API in a simplified cp(1) implementation through io_uring-cp. Signed-off-by: Jens Axboe <axboe@kernel.dk>
17 lines
441 B
C
17 lines
441 B
C
#ifndef LIBURING_BARRIER_H
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#define LIBURING_BARRIER_H
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#if defined(__x86_64) || defined(__i386__)
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#define read_barrier() __asm__ __volatile__("":::"memory")
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#define write_barrier() __asm__ __volatile__("":::"memory")
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#else
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/*
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* Add arch appropriate definitions. Be safe and use full barriers for
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* archs we don't have support for.
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*/
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#define read_barrier() __sync_synchronize()
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#define write_barrier() __sync_synchronize()
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#endif
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#endif
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