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-rw-r--r--gcc-4.4.3/libgomp/sections.c143
1 files changed, 0 insertions, 143 deletions
diff --git a/gcc-4.4.3/libgomp/sections.c b/gcc-4.4.3/libgomp/sections.c
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--- a/gcc-4.4.3/libgomp/sections.c
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-/* Copyright (C) 2005, 2007, 2008, 2009 Free Software Foundation, Inc.
- Contributed by Richard Henderson <rth@redhat.com>.
-
- This file is part of the GNU OpenMP Library (libgomp).
-
- Libgomp is free software; you can redistribute it and/or modify it
- under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 3, or (at your option)
- any later version.
-
- Libgomp is distributed in the hope that it will be useful, but WITHOUT ANY
- WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
- FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- more details.
-
- Under Section 7 of GPL version 3, you are granted additional
- permissions described in the GCC Runtime Library Exception, version
- 3.1, as published by the Free Software Foundation.
-
- You should have received a copy of the GNU General Public License and
- a copy of the GCC Runtime Library Exception along with this program;
- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
- <http://www.gnu.org/licenses/>. */
-
-/* This file handles the SECTIONS construct. */
-
-#include "libgomp.h"
-
-
-/* Initialize the given work share construct from the given arguments. */
-
-static inline void
-gomp_sections_init (struct gomp_work_share *ws, unsigned count)
-{
- ws->sched = GFS_DYNAMIC;
- ws->chunk_size = 1;
- ws->end = count + 1;
- ws->incr = 1;
- ws->next = 1;
-}
-
-/* This routine is called when first encountering a sections construct
- that is not bound directly to a parallel construct. The first thread
- that arrives will create the work-share construct; subsequent threads
- will see the construct exists and allocate work from it.
-
- COUNT is the number of sections in this construct.
-
- Returns the 1-based section number for this thread to perform, or 0 if
- all work was assigned to other threads prior to this thread's arrival. */
-
-unsigned
-GOMP_sections_start (unsigned count)
-{
- struct gomp_thread *thr = gomp_thread ();
- long s, e, ret;
-
- if (gomp_work_share_start (false))
- {
- gomp_sections_init (thr->ts.work_share, count);
- gomp_work_share_init_done ();
- }
-
-#ifdef HAVE_SYNC_BUILTINS
- if (gomp_iter_dynamic_next (&s, &e))
- ret = s;
- else
- ret = 0;
-#else
- gomp_mutex_lock (&thr->ts.work_share->lock);
- if (gomp_iter_dynamic_next_locked (&s, &e))
- ret = s;
- else
- ret = 0;
- gomp_mutex_unlock (&thr->ts.work_share->lock);
-#endif
-
- return ret;
-}
-
-/* This routine is called when the thread completes processing of the
- section currently assigned to it. If the work-share construct is
- bound directly to a parallel construct, then the construct may have
- been set up before the parallel. In which case, this may be the
- first iteration for the thread.
-
- Returns the 1-based section number for this thread to perform, or 0 if
- all work was assigned to other threads prior to this thread's arrival. */
-
-unsigned
-GOMP_sections_next (void)
-{
- long s, e, ret;
-
-#ifdef HAVE_SYNC_BUILTINS
- if (gomp_iter_dynamic_next (&s, &e))
- ret = s;
- else
- ret = 0;
-#else
- struct gomp_thread *thr = gomp_thread ();
-
- gomp_mutex_lock (&thr->ts.work_share->lock);
- if (gomp_iter_dynamic_next_locked (&s, &e))
- ret = s;
- else
- ret = 0;
- gomp_mutex_unlock (&thr->ts.work_share->lock);
-#endif
-
- return ret;
-}
-
-/* This routine pre-initializes a work-share construct to avoid one
- synchronization once we get into the loop. */
-
-void
-GOMP_parallel_sections_start (void (*fn) (void *), void *data,
- unsigned num_threads, unsigned count)
-{
- struct gomp_team *team;
-
- num_threads = gomp_resolve_num_threads (num_threads, count);
- team = gomp_new_team (num_threads);
- gomp_sections_init (&team->work_shares[0], count);
- gomp_team_start (fn, data, num_threads, team);
-}
-
-/* The GOMP_section_end* routines are called after the thread is told
- that all sections are complete. This first version synchronizes
- all threads; the nowait version does not. */
-
-void
-GOMP_sections_end (void)
-{
- gomp_work_share_end ();
-}
-
-void
-GOMP_sections_end_nowait (void)
-{
- gomp_work_share_end_nowait ();
-}