diff options
Diffstat (limited to 'scripts/atomic/fallbacks/inc_unless_negative')
| -rwxr-xr-x | scripts/atomic/fallbacks/inc_unless_negative | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/scripts/atomic/fallbacks/inc_unless_negative b/scripts/atomic/fallbacks/inc_unless_negative new file mode 100755 index 0000000000..7b4b098688 --- /dev/null +++ b/scripts/atomic/fallbacks/inc_unless_negative @@ -0,0 +1,10 @@ +cat <<EOF + ${int} c = raw_${atomic}_read(v); + + do { + if (unlikely(c < 0)) + return false; + } while (!raw_${atomic}_try_cmpxchg(v, &c, c + 1)); + + return true; +EOF |