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 /block/throttle.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 'block/throttle.c')
| -rw-r--r-- | block/throttle.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/block/throttle.c b/block/throttle.c index 9a0f38149a..b685166ad4 100644 --- a/block/throttle.c +++ b/block/throttle.c @@ -217,7 +217,7 @@ static void throttle_reopen_abort(BDRVReopenState *reopen_state) static void coroutine_fn throttle_co_drain_begin(BlockDriverState *bs) { ThrottleGroupMember *tgm = bs->opaque; - if (atomic_fetch_inc(&tgm->io_limits_disabled) == 0) { + if (qatomic_fetch_inc(&tgm->io_limits_disabled) == 0) { throttle_group_restart_tgm(tgm); } } @@ -226,7 +226,7 @@ static void coroutine_fn throttle_co_drain_end(BlockDriverState *bs) { ThrottleGroupMember *tgm = bs->opaque; assert(tgm->io_limits_disabled); - atomic_dec(&tgm->io_limits_disabled); + qatomic_dec(&tgm->io_limits_disabled); } static const char *const throttle_strong_runtime_opts[] = { |