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| author | Wilco Dijkstra <wdijkstr@arm.com> | 2022-09-22 15:32:40 +0100 |
|---|---|---|
| committer | Wilco Dijkstra <wdijkstr@arm.com> | 2022-09-23 15:59:56 +0100 |
| commit | d1babeb32de5dae8893c640bd925357b218d846c (patch) | |
| tree | c5ee8e42e03e6a4caf2eb645d5f9b7a8bdbdb6e1 /sysdeps/unix/sysv/linux/check_pf.c | |
| parent | 8114b95cef10a5a1fc3e529ab8b3a75f56fe889a (diff) | |
| download | glibc-d1babeb32de5dae8893c640bd925357b218d846c.zip glibc-d1babeb32de5dae8893c640bd925357b218d846c.tar.gz glibc-d1babeb32de5dae8893c640bd925357b218d846c.tar.bz2 | |
Use C11 atomics instead of atomic_increment(_val)
Replace atomic_increment and atomic_increment_val with atomic_fetch_add_relaxed.
One case in sem_post.c uses release semantics (see comment above it).
The others are simple counters and do not protect any shared data from
concurrent accesses.
Passes regress on AArch64.
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Diffstat (limited to 'sysdeps/unix/sysv/linux/check_pf.c')
| -rw-r--r-- | sysdeps/unix/sysv/linux/check_pf.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/sysdeps/unix/sysv/linux/check_pf.c b/sysdeps/unix/sysv/linux/check_pf.c index 4d486ca..0b77a2d 100644 --- a/sysdeps/unix/sysv/linux/check_pf.c +++ b/sysdeps/unix/sysv/linux/check_pf.c @@ -72,8 +72,8 @@ static uint32_t nl_timestamp; uint32_t __bump_nl_timestamp (void) { - if (atomic_increment_val (&nl_timestamp) == 0) - atomic_increment (&nl_timestamp); + if (atomic_fetch_add_relaxed (&nl_timestamp, 1) + 1 == 0) + atomic_fetch_add_relaxed (&nl_timestamp, 1); return nl_timestamp; } @@ -309,7 +309,7 @@ __check_pf (bool *seen_ipv4, bool *seen_ipv6, if (cache_valid_p ()) { data = cache; - atomic_increment (&cache->usecnt); + atomic_fetch_add_relaxed (&cache->usecnt, 1); } else { |