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.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.c')
-rw-r--r-- | block.c | 4 |
1 files changed, 2 insertions, 2 deletions
@@ -1694,7 +1694,7 @@ static int bdrv_open_common(BlockDriverState *bs, BlockBackend *file, } /* bdrv_new() and bdrv_close() make it so */ - assert(atomic_read(&bs->copy_on_read) == 0); + assert(qatomic_read(&bs->copy_on_read) == 0); if (bs->open_flags & BDRV_O_COPY_ON_READ) { if (!bs->read_only) { @@ -4436,7 +4436,7 @@ static void bdrv_close(BlockDriverState *bs) bs->file = NULL; g_free(bs->opaque); bs->opaque = NULL; - atomic_set(&bs->copy_on_read, 0); + qatomic_set(&bs->copy_on_read, 0); bs->backing_file[0] = '\0'; bs->backing_format[0] = '\0'; bs->total_sectors = 0; |