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| author | kib <kib@FreeBSD.org> | 2013-08-30 07:43:34 +0000 |
|---|---|---|
| committer | kib <kib@FreeBSD.org> | 2013-08-30 07:43:34 +0000 |
| commit | 748f95c68727abdadaf3ea8816cc19784d05411d (patch) | |
| tree | acb64d2cb73acf38b896550a336a14d6a7b15f23 /sys/sys/bitset.h | |
| parent | f8c0849efff16d60a8ceaa0515e45d857fdbad0c (diff) | |
| download | FreeBSD-src-748f95c68727abdadaf3ea8816cc19784d05411d.zip FreeBSD-src-748f95c68727abdadaf3ea8816cc19784d05411d.tar.gz | |
Add BIT_AND_ATOMIC() and CPU_AND_ATOMIC().
Sponsored by: The FreeBSD Foundation
Reviewed by: alc
Tested by: pho, bf
Diffstat (limited to 'sys/sys/bitset.h')
| -rw-r--r-- | sys/sys/bitset.h | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/sys/sys/bitset.h b/sys/sys/bitset.h index dee5542..7c24ecd 100644 --- a/sys/sys/bitset.h +++ b/sys/sys/bitset.h @@ -135,7 +135,14 @@ atomic_set_long(&(p)->__bits[__bitset_word(_s, n)], \ __bitset_mask((_s), n)) -/* Convenience functions catering special cases. */ +/* Convenience functions catering special cases. */ +#define BIT_AND_ATOMIC(_s, d, s) do { \ + __size_t __i; \ + for (__i = 0; __i < __bitset_words((_s)); __i++) \ + atomic_clear_long(&(d)->__bits[__i], \ + ~(s)->__bits[__i]); \ +} while (0) + #define BIT_OR_ATOMIC(_s, d, s) do { \ __size_t __i; \ for (__i = 0; __i < __bitset_words((_s)); __i++) \ |
