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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 /linux-user/signal.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 'linux-user/signal.c')
-rw-r--r-- | linux-user/signal.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/linux-user/signal.c b/linux-user/signal.c index 8cf51ff..73de934 100644 --- a/linux-user/signal.c +++ b/linux-user/signal.c @@ -195,7 +195,7 @@ int block_signals(void) sigfillset(&set); sigprocmask(SIG_SETMASK, &set, 0); - return atomic_xchg(&ts->signal_pending, 1); + return qatomic_xchg(&ts->signal_pending, 1); } /* Wrapper for sigprocmask function @@ -688,7 +688,7 @@ int queue_signal(CPUArchState *env, int sig, int si_type, ts->sync_signal.info = *info; ts->sync_signal.pending = sig; /* signal that a new signal is pending */ - atomic_set(&ts->signal_pending, 1); + qatomic_set(&ts->signal_pending, 1); return 1; /* indicates that the signal was queued */ } @@ -1005,7 +1005,7 @@ void process_pending_signals(CPUArchState *cpu_env) sigset_t set; sigset_t *blocked_set; - while (atomic_read(&ts->signal_pending)) { + while (qatomic_read(&ts->signal_pending)) { /* FIXME: This is not threadsafe. */ sigfillset(&set); sigprocmask(SIG_SETMASK, &set, 0); @@ -1049,7 +1049,7 @@ void process_pending_signals(CPUArchState *cpu_env) * of unblocking might cause us to take another host signal which * will set signal_pending again). */ - atomic_set(&ts->signal_pending, 0); + qatomic_set(&ts->signal_pending, 0); ts->in_sigsuspend = 0; set = ts->signal_mask; sigdelset(&set, SIGSEGV); |