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author | Stefan Hajnoczi <stefanha@redhat.com> | 2020-09-23 11:56:46 +0100 |
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committer | Stefan Hajnoczi <stefanha@redhat.com> | 2020-09-23 16:07:44 +0100 |
commit | d73415a315471ac0b127ed3fad45c8ec5d711de1 (patch) | |
tree | bae20b3a39968fdfb4340b1a39b533333a8e6fd0 /block/throttle-groups.c | |
parent | ed7db34b5aedba4487fd949b2e545eef954f093e (diff) | |
download | qemu-d73415a315471ac0b127ed3fad45c8ec5d711de1.zip qemu-d73415a315471ac0b127ed3fad45c8ec5d711de1.tar.gz qemu-d73415a315471ac0b127ed3fad45c8ec5d711de1.tar.bz2 |
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-groups.c')
-rw-r--r-- | block/throttle-groups.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/block/throttle-groups.c b/block/throttle-groups.c index 4e28365..e2f2813 100644 --- a/block/throttle-groups.c +++ b/block/throttle-groups.c @@ -228,7 +228,7 @@ static ThrottleGroupMember *next_throttle_token(ThrottleGroupMember *tgm, * immediately if it has pending requests. Otherwise we could be * forcing it to wait for other member's throttled requests. */ if (tgm_has_pending_reqs(tgm, is_write) && - atomic_read(&tgm->io_limits_disabled)) { + qatomic_read(&tgm->io_limits_disabled)) { return tgm; } @@ -272,7 +272,7 @@ static bool throttle_group_schedule_timer(ThrottleGroupMember *tgm, ThrottleTimers *tt = &tgm->throttle_timers; bool must_wait; - if (atomic_read(&tgm->io_limits_disabled)) { + if (qatomic_read(&tgm->io_limits_disabled)) { return false; } @@ -417,7 +417,7 @@ static void coroutine_fn throttle_group_restart_queue_entry(void *opaque) g_free(data); - atomic_dec(&tgm->restart_pending); + qatomic_dec(&tgm->restart_pending); aio_wait_kick(); } @@ -434,7 +434,7 @@ static void throttle_group_restart_queue(ThrottleGroupMember *tgm, bool is_write * be no timer pending on this tgm at this point */ assert(!timer_pending(tgm->throttle_timers.timers[is_write])); - atomic_inc(&tgm->restart_pending); + qatomic_inc(&tgm->restart_pending); co = qemu_coroutine_create(throttle_group_restart_queue_entry, rd); aio_co_enter(tgm->aio_context, co); @@ -544,7 +544,7 @@ void throttle_group_register_tgm(ThrottleGroupMember *tgm, tgm->throttle_state = ts; tgm->aio_context = ctx; - atomic_set(&tgm->restart_pending, 0); + qatomic_set(&tgm->restart_pending, 0); qemu_mutex_lock(&tg->lock); /* If the ThrottleGroup is new set this ThrottleGroupMember as the token */ @@ -592,7 +592,7 @@ void throttle_group_unregister_tgm(ThrottleGroupMember *tgm) } /* Wait for throttle_group_restart_queue_entry() coroutines to finish */ - AIO_WAIT_WHILE(tgm->aio_context, atomic_read(&tgm->restart_pending) > 0); + AIO_WAIT_WHILE(tgm->aio_context, qatomic_read(&tgm->restart_pending) > 0); qemu_mutex_lock(&tg->lock); for (i = 0; i < 2; i++) { |