From 21b4aa5d20fd07207e73270cadffed5c63fb4343 Mon Sep 17 00:00:00 2001 From: Jens Axboe Date: Wed, 6 Mar 2019 09:03:50 -0700 Subject: io_uring: add a few test tools 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 --- tools/io_uring/barrier.h | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) create mode 100644 tools/io_uring/barrier.h (limited to 'tools/io_uring/barrier.h') diff --git a/tools/io_uring/barrier.h b/tools/io_uring/barrier.h new file mode 100644 index 000000000000..ef00f6722ba9 --- /dev/null +++ b/tools/io_uring/barrier.h @@ -0,0 +1,16 @@ +#ifndef LIBURING_BARRIER_H +#define LIBURING_BARRIER_H + +#if defined(__x86_64) || defined(__i386__) +#define read_barrier() __asm__ __volatile__("":::"memory") +#define write_barrier() __asm__ __volatile__("":::"memory") +#else +/* + * Add arch appropriate definitions. Be safe and use full barriers for + * archs we don't have support for. + */ +#define read_barrier() __sync_synchronize() +#define write_barrier() __sync_synchronize() +#endif + +#endif -- cgit v1.2.3