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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 /manual | |
| parent | 8114b95cef10a5a1fc3e529ab8b3a75f56fe889a (diff) | |
| download | glibc-d1babeb32de5dae8893c640bd925357b218d846c.tar glibc-d1babeb32de5dae8893c640bd925357b218d846c.tar.gz glibc-d1babeb32de5dae8893c640bd925357b218d846c.tar.bz2 glibc-d1babeb32de5dae8893c640bd925357b218d846c.zip | |
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 'manual')
| -rw-r--r-- | manual/ipc.texi | 2 | ||||
| -rw-r--r-- | manual/llio.texi | 4 |
2 files changed, 3 insertions, 3 deletions
diff --git a/manual/ipc.texi b/manual/ipc.texi index 46c049c3da..be74664af9 100644 --- a/manual/ipc.texi +++ b/manual/ipc.texi @@ -85,7 +85,7 @@ by @theglibc{}. @deftypefun int sem_wait (sem_t *@var{sem}); @safety{@prelim{}@mtsafe{}@assafe{}@acunsafe{@acucorrupt{}}} -@c atomic_increment (nwaiters) acucorrupt +@c atomic_fetch_add_relaxed (nwaiters) acucorrupt @c @c Given the use atomic operations this function seems @c to be AS-safe. It is AC-unsafe because there is still diff --git a/manual/llio.texi b/manual/llio.texi index 0dfcdad434..79cf4c1670 100644 --- a/manual/llio.texi +++ b/manual/llio.texi @@ -2528,7 +2528,7 @@ aiocb64}, since the LFS transparently replaces the old interface. @c _dl_allocate_tls_init ok @c GET_DTV ok @c mmap ok -@c atomic_increment_val ok +@c atomic_fetch_add_relaxed ok @c munmap ok @c change_stack_perm ok @c mprotect ok @@ -2567,7 +2567,7 @@ aiocb64}, since the LFS transparently replaces the old interface. @c do_clone @asulock @ascuheap @aculock @acsmem @c PREPARE_CREATE ok @c lll_lock (pd->lock) @asulock @aculock -@c atomic_increment ok +@c atomic_fetch_add_relaxed ok @c clone ok @c atomic_fetch_add_relaxed ok @c atomic_exchange_acq ok |