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Use C11 atomics instead atomic_add(_zero)

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Replace atomic_add and atomic_add_zero with atomic_fetch_add_relaxed.

Reviewed-by: DJ Delorie <dj@redhat.com>
This commit is contained in:
Wilco Dijkstra 2022-09-09 14:11:23 +01:00
parent 83859e1115
commit 53b251c9ff
2 changed files with 4 additions and 4 deletions
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2
malloc/malloc.c
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@ -3034,7 +3034,7 @@ munmap_chunk (mchunkptr p)
malloc_printerr ("munmap_chunk(): invalid pointer");
atomic_decrement (&mp_.n_mmaps);
atomic_add (&mp_.mmapped_mem, -total_size);
atomic_fetch_add_relaxed (&mp_.mmapped_mem, -total_size);
/* If munmap failed the process virtual memory address space is in a
bad shape. Just leave the block hanging around, the process will

6
sysdeps/unix/sysv/linux/check_pf.c
View File

@ -278,7 +278,7 @@ make_request (int fd, pid_t pid)
{
free (result);
atomic_add (&noai6ai_cached.usecnt, 2);
atomic_fetch_add_relaxed (&noai6ai_cached.usecnt, 2);
noai6ai_cached.seen_ipv4 = seen_ipv4;
noai6ai_cached.seen_ipv6 = seen_ipv6;
result = &noai6ai_cached;
@ -349,7 +349,7 @@ __check_pf (bool *seen_ipv4, bool *seen_ipv6,
*in6ai = data->in6ai;
if (olddata != NULL && olddata->usecnt > 0
&& atomic_add_zero (&olddata->usecnt, -1))
&& atomic_fetch_add_relaxed (&olddata->usecnt, -1) == 1)
free (olddata);
return;
@ -377,7 +377,7 @@ __free_in6ai (struct in6addrinfo *ai)
(struct cached_data *) ((char *) ai
- offsetof (struct cached_data, in6ai));
if (atomic_add_zero (&data->usecnt, -1))
if (atomic_fetch_add_relaxed (&data->usecnt, -1) == 1)
{
__libc_lock_lock (lock);