diff options
author | Stefan Hajnoczi <stefanha@redhat.com> | 2020-09-23 11:56:46 +0100 |
---|---|---|
committer | Stefan Hajnoczi <stefanha@redhat.com> | 2020-09-23 16:07:44 +0100 |
commit | d73415a315471ac0b127ed3fad45c8ec5d711de1 (patch) | |
tree | bae20b3a39968fdfb4340b1a39b533333a8e6fd0 /util/aio-win32.c | |
parent | ed7db34b5aedba4487fd949b2e545eef954f093e (diff) |
qemu/atomic.h: rename atomic_ to qatomic_
clang's C11 atomic_fetch_*() functions only take a C11 atomic type
pointer argument. QEMU uses direct types (int, etc) and this causes a
compiler error when a QEMU code calls these functions in a source file
that also included <stdatomic.h> via a system header file:
$ CC=clang CXX=clang++ ./configure ... && make
../util/async.c:79:17: error: address argument to atomic operation must be a pointer to _Atomic type ('unsigned int *' invalid)
Avoid using atomic_*() names in QEMU's atomic.h since that namespace is
used by <stdatomic.h>. Prefix QEMU's APIs with 'q' so that atomic.h
and <stdatomic.h> can co-exist. I checked /usr/include on my machine and
searched GitHub for existing "qatomic_" users but there seem to be none.
This patch was generated using:
$ git grep -h -o '\<atomic\(64\)\?_[a-z0-9_]\+' include/qemu/atomic.h | \
sort -u >/tmp/changed_identifiers
$ for identifier in $(</tmp/changed_identifiers); do
sed -i "s%\<$identifier\>%q$identifier%g" \
$(git grep -I -l "\<$identifier\>")
done
I manually fixed line-wrap issues and misaligned rST tables.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20200923105646.47864-1-stefanha@redhat.com>
Diffstat (limited to 'util/aio-win32.c')
-rw-r--r-- | util/aio-win32.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/util/aio-win32.c b/util/aio-win32.c index 49bd90e62e..e7b1d649e9 100644 --- a/util/aio-win32.c +++ b/util/aio-win32.c @@ -345,7 +345,7 @@ bool aio_poll(AioContext *ctx, bool blocking) * so disable the optimization now. */ if (blocking) { - atomic_set(&ctx->notify_me, atomic_read(&ctx->notify_me) + 2); + qatomic_set(&ctx->notify_me, qatomic_read(&ctx->notify_me) + 2); /* * Write ctx->notify_me before computing the timeout * (reading bottom half flags, etc.). Pairs with @@ -384,7 +384,8 @@ bool aio_poll(AioContext *ctx, bool blocking) ret = WaitForMultipleObjects(count, events, FALSE, timeout); if (blocking) { assert(first); - atomic_store_release(&ctx->notify_me, atomic_read(&ctx->notify_me) - 2); + qatomic_store_release(&ctx->notify_me, + qatomic_read(&ctx->notify_me) - 2); aio_notify_accept(ctx); } |