diff options
Diffstat (limited to 'libgomp/iter.c')
| -rw-r--r-- | libgomp/iter.c | 35 |
1 files changed, 31 insertions, 4 deletions
diff --git a/libgomp/iter.c b/libgomp/iter.c index 2d5dd2edd5a..f186058be46 100644 --- a/libgomp/iter.c +++ b/libgomp/iter.c @@ -1,4 +1,4 @@ -/* Copyright (C) 2005 Free Software Foundation, Inc. +/* Copyright (C) 2005, 2008 Free Software Foundation, Inc. Contributed by Richard Henderson <rth@redhat.com>. This file is part of the GNU OpenMP Library (libgomp). @@ -154,7 +154,7 @@ gomp_iter_dynamic_next_locked (long *pstart, long *pend) if (start == ws->end) return false; - chunk = ws->chunk_size * ws->incr; + chunk = ws->chunk_size; left = ws->end - start; if (ws->incr < 0) { @@ -186,11 +186,38 @@ gomp_iter_dynamic_next (long *pstart, long *pend) struct gomp_work_share *ws = thr->ts.work_share; long start, end, nend, chunk, incr; - start = ws->next; end = ws->end; incr = ws->incr; - chunk = ws->chunk_size * incr; + chunk = ws->chunk_size; + + if (__builtin_expect (ws->mode, 1)) + { + long tmp = __sync_fetch_and_add (&ws->next, chunk); + if (incr > 0) + { + if (tmp >= end) + return false; + nend = tmp + chunk; + if (nend > end) + nend = end; + *pstart = tmp; + *pend = nend; + return true; + } + else + { + if (tmp <= end) + return false; + nend = tmp + chunk; + if (nend < end) + nend = end; + *pstart = tmp; + *pend = nend; + return true; + } + } + start = ws->next; while (1) { long left = end - start; |