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995aba5867
This had gotten added in commit 378da98fcc
(r279621) "OpenACC reference count overhaul", but it doesn't have any use in
OpenACC.
libgomp/
* oacc-mem.c (goacc_exit_data_internal): Remove
'GOMP_MAP_ALWAYS_FROM' handling.
1338 lines
33 KiB
C
1338 lines
33 KiB
C
/* OpenACC Runtime initialization routines
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Copyright (C) 2013-2020 Free Software Foundation, Inc.
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Contributed by Mentor Embedded.
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This file is part of the GNU Offloading and Multi Processing Library
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(libgomp).
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Libgomp is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3, or (at your option)
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any later version.
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Libgomp is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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more details.
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Under Section 7 of GPL version 3, you are granted additional
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permissions described in the GCC Runtime Library Exception, version
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3.1, as published by the Free Software Foundation.
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You should have received a copy of the GNU General Public License and
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a copy of the GCC Runtime Library Exception along with this program;
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see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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<http://www.gnu.org/licenses/>. */
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#include "openacc.h"
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#include "libgomp.h"
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#include "gomp-constants.h"
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#include "oacc-int.h"
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#include <string.h>
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#include <assert.h>
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/* Return block containing [H->S), or NULL if not contained. The device lock
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for DEV must be locked on entry, and remains locked on exit. */
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static splay_tree_key
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lookup_host (struct gomp_device_descr *dev, void *h, size_t s)
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{
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struct splay_tree_key_s node;
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splay_tree_key key;
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node.host_start = (uintptr_t) h;
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node.host_end = (uintptr_t) h + s;
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key = splay_tree_lookup (&dev->mem_map, &node);
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return key;
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}
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/* Helper for lookup_dev. Iterate over splay tree. */
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static splay_tree_key
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lookup_dev_1 (splay_tree_node node, uintptr_t d, size_t s)
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{
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splay_tree_key key = &node->key;
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if (d >= key->tgt->tgt_start && d + s <= key->tgt->tgt_end)
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return key;
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key = NULL;
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if (node->left)
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key = lookup_dev_1 (node->left, d, s);
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if (!key && node->right)
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key = lookup_dev_1 (node->right, d, s);
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return key;
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}
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/* Return block containing [D->S), or NULL if not contained.
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This iterates over the splay tree. This is not expected to be a common
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operation.
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The device lock associated with MEM_MAP must be locked on entry, and remains
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locked on exit. */
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static splay_tree_key
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lookup_dev (splay_tree mem_map, void *d, size_t s)
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{
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if (!mem_map || !mem_map->root)
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return NULL;
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return lookup_dev_1 (mem_map->root, (uintptr_t) d, s);
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}
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/* OpenACC is silent on how memory exhaustion is indicated. We return
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NULL. */
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void *
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acc_malloc (size_t s)
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{
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if (!s)
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return NULL;
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goacc_lazy_initialize ();
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struct goacc_thread *thr = goacc_thread ();
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assert (thr->dev);
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if (thr->dev->capabilities & GOMP_OFFLOAD_CAP_SHARED_MEM)
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return malloc (s);
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acc_prof_info prof_info;
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acc_api_info api_info;
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bool profiling_p = GOACC_PROFILING_SETUP_P (thr, &prof_info, &api_info);
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void *res = thr->dev->alloc_func (thr->dev->target_id, s);
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if (profiling_p)
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{
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thr->prof_info = NULL;
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thr->api_info = NULL;
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}
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return res;
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}
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void
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acc_free (void *d)
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{
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splay_tree_key k;
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if (!d)
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return;
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struct goacc_thread *thr = goacc_thread ();
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assert (thr && thr->dev);
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struct gomp_device_descr *acc_dev = thr->dev;
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if (acc_dev->capabilities & GOMP_OFFLOAD_CAP_SHARED_MEM)
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return free (d);
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acc_prof_info prof_info;
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acc_api_info api_info;
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bool profiling_p = GOACC_PROFILING_SETUP_P (thr, &prof_info, &api_info);
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gomp_mutex_lock (&acc_dev->lock);
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/* We don't have to call lazy open here, as the ptr value must have
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been returned by acc_malloc. It's not permitted to pass NULL in
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(unless you got that null from acc_malloc). */
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if ((k = lookup_dev (&acc_dev->mem_map, d, 1)))
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{
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void *offset = d - k->tgt->tgt_start + k->tgt_offset;
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void *h = k->host_start + offset;
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size_t h_size = k->host_end - k->host_start;
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gomp_mutex_unlock (&acc_dev->lock);
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/* PR92503 "[OpenACC] Behavior of 'acc_free' if the memory space is still
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used in a mapping". */
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gomp_fatal ("refusing to free device memory space at %p that is still"
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" mapped at [%p,+%d]",
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d, h, (int) h_size);
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}
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else
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gomp_mutex_unlock (&acc_dev->lock);
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if (!acc_dev->free_func (acc_dev->target_id, d))
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gomp_fatal ("error in freeing device memory in %s", __FUNCTION__);
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if (profiling_p)
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{
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thr->prof_info = NULL;
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thr->api_info = NULL;
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}
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}
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static void
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memcpy_tofrom_device (bool from, void *d, void *h, size_t s, int async,
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const char *libfnname)
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{
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/* No need to call lazy open here, as the device pointer must have
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been obtained from a routine that did that. */
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struct goacc_thread *thr = goacc_thread ();
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assert (thr && thr->dev);
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if (thr->dev->capabilities & GOMP_OFFLOAD_CAP_SHARED_MEM)
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{
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if (from)
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memmove (h, d, s);
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else
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memmove (d, h, s);
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return;
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}
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acc_prof_info prof_info;
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acc_api_info api_info;
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bool profiling_p = GOACC_PROFILING_SETUP_P (thr, &prof_info, &api_info);
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if (profiling_p)
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{
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prof_info.async = async;
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prof_info.async_queue = prof_info.async;
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}
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goacc_aq aq = get_goacc_asyncqueue (async);
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if (from)
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gomp_copy_dev2host (thr->dev, aq, h, d, s);
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else
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gomp_copy_host2dev (thr->dev, aq, d, h, s, /* TODO: cbuf? */ NULL);
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if (profiling_p)
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{
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thr->prof_info = NULL;
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thr->api_info = NULL;
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}
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}
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void
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acc_memcpy_to_device (void *d, void *h, size_t s)
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{
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memcpy_tofrom_device (false, d, h, s, acc_async_sync, __FUNCTION__);
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}
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void
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acc_memcpy_to_device_async (void *d, void *h, size_t s, int async)
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{
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memcpy_tofrom_device (false, d, h, s, async, __FUNCTION__);
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}
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void
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acc_memcpy_from_device (void *h, void *d, size_t s)
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{
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memcpy_tofrom_device (true, d, h, s, acc_async_sync, __FUNCTION__);
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}
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void
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acc_memcpy_from_device_async (void *h, void *d, size_t s, int async)
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{
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memcpy_tofrom_device (true, d, h, s, async, __FUNCTION__);
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}
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/* Return the device pointer that corresponds to host data H. Or NULL
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if no mapping. */
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void *
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acc_deviceptr (void *h)
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{
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splay_tree_key n;
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void *d;
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void *offset;
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goacc_lazy_initialize ();
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struct goacc_thread *thr = goacc_thread ();
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struct gomp_device_descr *dev = thr->dev;
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if (thr->dev->capabilities & GOMP_OFFLOAD_CAP_SHARED_MEM)
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return h;
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/* In the following, no OpenACC Profiling Interface events can possibly be
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generated. */
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gomp_mutex_lock (&dev->lock);
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n = lookup_host (dev, h, 1);
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if (!n)
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{
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gomp_mutex_unlock (&dev->lock);
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return NULL;
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}
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offset = h - n->host_start;
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d = n->tgt->tgt_start + n->tgt_offset + offset;
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gomp_mutex_unlock (&dev->lock);
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return d;
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}
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/* Return the host pointer that corresponds to device data D. Or NULL
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if no mapping. */
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void *
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acc_hostptr (void *d)
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{
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splay_tree_key n;
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void *h;
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void *offset;
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goacc_lazy_initialize ();
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struct goacc_thread *thr = goacc_thread ();
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struct gomp_device_descr *acc_dev = thr->dev;
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if (thr->dev->capabilities & GOMP_OFFLOAD_CAP_SHARED_MEM)
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return d;
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/* In the following, no OpenACC Profiling Interface events can possibly be
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generated. */
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gomp_mutex_lock (&acc_dev->lock);
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n = lookup_dev (&acc_dev->mem_map, d, 1);
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if (!n)
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{
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gomp_mutex_unlock (&acc_dev->lock);
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return NULL;
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}
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offset = d - n->tgt->tgt_start + n->tgt_offset;
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h = n->host_start + offset;
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gomp_mutex_unlock (&acc_dev->lock);
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return h;
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}
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/* Return 1 if host data [H,+S] is present on the device. */
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int
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acc_is_present (void *h, size_t s)
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{
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splay_tree_key n;
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if (!s || !h)
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return 0;
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goacc_lazy_initialize ();
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struct goacc_thread *thr = goacc_thread ();
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struct gomp_device_descr *acc_dev = thr->dev;
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if (thr->dev->capabilities & GOMP_OFFLOAD_CAP_SHARED_MEM)
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return h != NULL;
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/* In the following, no OpenACC Profiling Interface events can possibly be
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generated. */
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gomp_mutex_lock (&acc_dev->lock);
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n = lookup_host (acc_dev, h, s);
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if (n && ((uintptr_t)h < n->host_start
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|| (uintptr_t)h + s > n->host_end
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|| s > n->host_end - n->host_start))
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n = NULL;
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gomp_mutex_unlock (&acc_dev->lock);
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return n != NULL;
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}
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/* Create a mapping for host [H,+S] -> device [D,+S] */
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void
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acc_map_data (void *h, void *d, size_t s)
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{
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size_t mapnum = 1;
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void *hostaddrs = h;
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void *devaddrs = d;
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size_t sizes = s;
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unsigned short kinds = GOMP_MAP_ALLOC;
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goacc_lazy_initialize ();
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struct goacc_thread *thr = goacc_thread ();
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struct gomp_device_descr *acc_dev = thr->dev;
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if (acc_dev->capabilities & GOMP_OFFLOAD_CAP_SHARED_MEM)
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{
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if (d != h)
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gomp_fatal ("cannot map data on shared-memory system");
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}
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else
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{
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struct goacc_thread *thr = goacc_thread ();
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if (!d || !h || !s)
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gomp_fatal ("[%p,+%d]->[%p,+%d] is a bad map",
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(void *)h, (int)s, (void *)d, (int)s);
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acc_prof_info prof_info;
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acc_api_info api_info;
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bool profiling_p = GOACC_PROFILING_SETUP_P (thr, &prof_info, &api_info);
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gomp_mutex_lock (&acc_dev->lock);
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if (lookup_host (acc_dev, h, s))
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{
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gomp_mutex_unlock (&acc_dev->lock);
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gomp_fatal ("host address [%p, +%d] is already mapped", (void *)h,
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(int)s);
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}
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if (lookup_dev (&thr->dev->mem_map, d, s))
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{
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gomp_mutex_unlock (&acc_dev->lock);
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gomp_fatal ("device address [%p, +%d] is already mapped", (void *)d,
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(int)s);
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}
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gomp_mutex_unlock (&acc_dev->lock);
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struct target_mem_desc *tgt
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= gomp_map_vars (acc_dev, mapnum, &hostaddrs, &devaddrs, &sizes,
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&kinds, true, GOMP_MAP_VARS_ENTER_DATA);
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assert (tgt);
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assert (tgt->list_count == 1);
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splay_tree_key n = tgt->list[0].key;
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assert (n);
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assert (n->refcount == 1);
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assert (n->virtual_refcount == 0);
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/* Special reference counting behavior. */
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n->refcount = REFCOUNT_INFINITY;
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if (profiling_p)
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{
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thr->prof_info = NULL;
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thr->api_info = NULL;
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}
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}
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}
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void
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acc_unmap_data (void *h)
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{
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struct goacc_thread *thr = goacc_thread ();
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struct gomp_device_descr *acc_dev = thr->dev;
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/* No need to call lazy open, as the address must have been mapped. */
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/* This is a no-op on shared-memory targets. */
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if (acc_dev->capabilities & GOMP_OFFLOAD_CAP_SHARED_MEM)
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return;
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acc_prof_info prof_info;
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acc_api_info api_info;
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bool profiling_p = GOACC_PROFILING_SETUP_P (thr, &prof_info, &api_info);
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gomp_mutex_lock (&acc_dev->lock);
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splay_tree_key n = lookup_host (acc_dev, h, 1);
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if (!n)
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{
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gomp_mutex_unlock (&acc_dev->lock);
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gomp_fatal ("%p is not a mapped block", (void *)h);
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}
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size_t host_size = n->host_end - n->host_start;
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if (n->host_start != (uintptr_t) h)
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{
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gomp_mutex_unlock (&acc_dev->lock);
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gomp_fatal ("[%p,%d] surrounds %p",
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(void *) n->host_start, (int) host_size, (void *) h);
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}
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/* TODO This currently doesn't catch 'REFCOUNT_INFINITY' usage different from
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'acc_map_data'. Maybe 'virtual_refcount' can be used for disambiguating
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the different 'REFCOUNT_INFINITY' cases, or simply separate
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'REFCOUNT_INFINITY' values per different usage ('REFCOUNT_ACC_MAP_DATA'
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etc.)? */
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else if (n->refcount != REFCOUNT_INFINITY)
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{
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gomp_mutex_unlock (&acc_dev->lock);
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gomp_fatal ("refusing to unmap block [%p,+%d] that has not been mapped"
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" by 'acc_map_data'",
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(void *) h, (int) host_size);
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}
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struct target_mem_desc *tgt = n->tgt;
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if (tgt->refcount == REFCOUNT_INFINITY)
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{
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gomp_mutex_unlock (&acc_dev->lock);
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gomp_fatal ("cannot unmap target block");
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}
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/* Above, we've verified that the mapping must have been set up by
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'acc_map_data'. */
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assert (tgt->refcount == 1);
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/* Nullifying these fields prevents 'gomp_unmap_tgt' via 'gomp_remove_var'
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from freeing the target memory. */
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tgt->tgt_end = 0;
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tgt->to_free = NULL;
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bool is_tgt_unmapped = gomp_remove_var (acc_dev, n);
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assert (is_tgt_unmapped);
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gomp_mutex_unlock (&acc_dev->lock);
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if (profiling_p)
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{
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thr->prof_info = NULL;
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thr->api_info = NULL;
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}
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}
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/* Enter dynamic mapping for a single datum. Return the device pointer. */
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|
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static void *
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goacc_enter_datum (void **hostaddrs, size_t *sizes, void *kinds, int async)
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{
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void *d;
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splay_tree_key n;
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if (!hostaddrs[0] || !sizes[0])
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gomp_fatal ("[%p,+%d] is a bad range", hostaddrs[0], (int) sizes[0]);
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goacc_lazy_initialize ();
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struct goacc_thread *thr = goacc_thread ();
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struct gomp_device_descr *acc_dev = thr->dev;
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if (acc_dev->capabilities & GOMP_OFFLOAD_CAP_SHARED_MEM)
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return hostaddrs[0];
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acc_prof_info prof_info;
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acc_api_info api_info;
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bool profiling_p = GOACC_PROFILING_SETUP_P (thr, &prof_info, &api_info);
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if (profiling_p)
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{
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prof_info.async = async;
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prof_info.async_queue = prof_info.async;
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}
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|
|
gomp_mutex_lock (&acc_dev->lock);
|
|
|
|
n = lookup_host (acc_dev, hostaddrs[0], sizes[0]);
|
|
if (n)
|
|
{
|
|
void *h = hostaddrs[0];
|
|
size_t s = sizes[0];
|
|
|
|
/* Present. */
|
|
d = (void *) (n->tgt->tgt_start + n->tgt_offset + h - n->host_start);
|
|
|
|
if ((h + s) > (void *)n->host_end)
|
|
{
|
|
gomp_mutex_unlock (&acc_dev->lock);
|
|
gomp_fatal ("[%p,+%d] not mapped", (void *)h, (int)s);
|
|
}
|
|
|
|
assert (n->refcount != REFCOUNT_LINK);
|
|
if (n->refcount != REFCOUNT_INFINITY)
|
|
{
|
|
n->refcount++;
|
|
n->virtual_refcount++;
|
|
}
|
|
|
|
gomp_mutex_unlock (&acc_dev->lock);
|
|
}
|
|
else
|
|
{
|
|
const size_t mapnum = 1;
|
|
|
|
gomp_mutex_unlock (&acc_dev->lock);
|
|
|
|
goacc_aq aq = get_goacc_asyncqueue (async);
|
|
|
|
struct target_mem_desc *tgt
|
|
= gomp_map_vars_async (acc_dev, aq, mapnum, hostaddrs, NULL, sizes,
|
|
kinds, true, GOMP_MAP_VARS_OPENACC_ENTER_DATA);
|
|
assert (tgt);
|
|
assert (tgt->list_count == 1);
|
|
n = tgt->list[0].key;
|
|
assert (n);
|
|
assert (n->refcount == 1);
|
|
assert (n->virtual_refcount == 0);
|
|
|
|
d = (void *) tgt->tgt_start;
|
|
}
|
|
|
|
if (profiling_p)
|
|
{
|
|
thr->prof_info = NULL;
|
|
thr->api_info = NULL;
|
|
}
|
|
|
|
return d;
|
|
}
|
|
|
|
void *
|
|
acc_create (void *h, size_t s)
|
|
{
|
|
unsigned short kinds[1] = { GOMP_MAP_ALLOC };
|
|
return goacc_enter_datum (&h, &s, &kinds, acc_async_sync);
|
|
}
|
|
|
|
void
|
|
acc_create_async (void *h, size_t s, int async)
|
|
{
|
|
unsigned short kinds[1] = { GOMP_MAP_ALLOC };
|
|
goacc_enter_datum (&h, &s, &kinds, async);
|
|
}
|
|
|
|
/* acc_present_or_create used to be what acc_create is now. */
|
|
/* acc_pcreate is acc_present_or_create by a different name. */
|
|
#ifdef HAVE_ATTRIBUTE_ALIAS
|
|
strong_alias (acc_create, acc_present_or_create)
|
|
strong_alias (acc_create, acc_pcreate)
|
|
#else
|
|
void *
|
|
acc_present_or_create (void *h, size_t s)
|
|
{
|
|
return acc_create (h, s);
|
|
}
|
|
|
|
void *
|
|
acc_pcreate (void *h, size_t s)
|
|
{
|
|
return acc_create (h, s);
|
|
}
|
|
#endif
|
|
|
|
void *
|
|
acc_copyin (void *h, size_t s)
|
|
{
|
|
unsigned short kinds[1] = { GOMP_MAP_TO };
|
|
return goacc_enter_datum (&h, &s, &kinds, acc_async_sync);
|
|
}
|
|
|
|
void
|
|
acc_copyin_async (void *h, size_t s, int async)
|
|
{
|
|
unsigned short kinds[1] = { GOMP_MAP_TO };
|
|
goacc_enter_datum (&h, &s, &kinds, async);
|
|
}
|
|
|
|
/* acc_present_or_copyin used to be what acc_copyin is now. */
|
|
/* acc_pcopyin is acc_present_or_copyin by a different name. */
|
|
#ifdef HAVE_ATTRIBUTE_ALIAS
|
|
strong_alias (acc_copyin, acc_present_or_copyin)
|
|
strong_alias (acc_copyin, acc_pcopyin)
|
|
#else
|
|
void *
|
|
acc_present_or_copyin (void *h, size_t s)
|
|
{
|
|
return acc_copyin (h, s);
|
|
}
|
|
|
|
void *
|
|
acc_pcopyin (void *h, size_t s)
|
|
{
|
|
return acc_copyin (h, s);
|
|
}
|
|
#endif
|
|
|
|
|
|
/* Exit a dynamic mapping for a single variable. */
|
|
|
|
static void
|
|
goacc_exit_datum (void *h, size_t s, unsigned short kind, int async)
|
|
{
|
|
/* No need to call lazy open, as the data must already have been
|
|
mapped. */
|
|
|
|
kind &= 0xff;
|
|
|
|
struct goacc_thread *thr = goacc_thread ();
|
|
struct gomp_device_descr *acc_dev = thr->dev;
|
|
|
|
if (acc_dev->capabilities & GOMP_OFFLOAD_CAP_SHARED_MEM)
|
|
return;
|
|
|
|
acc_prof_info prof_info;
|
|
acc_api_info api_info;
|
|
bool profiling_p = GOACC_PROFILING_SETUP_P (thr, &prof_info, &api_info);
|
|
if (profiling_p)
|
|
{
|
|
prof_info.async = async;
|
|
prof_info.async_queue = prof_info.async;
|
|
}
|
|
|
|
gomp_mutex_lock (&acc_dev->lock);
|
|
|
|
splay_tree_key n = lookup_host (acc_dev, h, s);
|
|
if (!n)
|
|
/* PR92726, RP92970, PR92984: no-op. */
|
|
goto out;
|
|
|
|
if ((uintptr_t) h < n->host_start || (uintptr_t) h + s > n->host_end)
|
|
{
|
|
size_t host_size = n->host_end - n->host_start;
|
|
gomp_mutex_unlock (&acc_dev->lock);
|
|
gomp_fatal ("[%p,+%d] outside mapped block [%p,+%d]",
|
|
(void *) h, (int) s, (void *) n->host_start, (int) host_size);
|
|
}
|
|
|
|
bool finalize = (kind == GOMP_MAP_DELETE
|
|
|| kind == GOMP_MAP_FORCE_FROM);
|
|
if (finalize)
|
|
{
|
|
if (n->refcount != REFCOUNT_INFINITY)
|
|
n->refcount -= n->virtual_refcount;
|
|
n->virtual_refcount = 0;
|
|
}
|
|
|
|
if (n->virtual_refcount > 0)
|
|
{
|
|
if (n->refcount != REFCOUNT_INFINITY)
|
|
n->refcount--;
|
|
n->virtual_refcount--;
|
|
}
|
|
else if (n->refcount > 0 && n->refcount != REFCOUNT_INFINITY)
|
|
n->refcount--;
|
|
|
|
if (n->refcount == 0)
|
|
{
|
|
goacc_aq aq = get_goacc_asyncqueue (async);
|
|
|
|
bool copyout = (kind == GOMP_MAP_FROM
|
|
|| kind == GOMP_MAP_FORCE_FROM);
|
|
if (copyout)
|
|
{
|
|
void *d = (void *) (n->tgt->tgt_start + n->tgt_offset
|
|
+ (uintptr_t) h - n->host_start);
|
|
gomp_copy_dev2host (acc_dev, aq, h, d, s);
|
|
}
|
|
|
|
if (aq)
|
|
/* TODO We can't do the 'is_tgt_unmapped' checking -- see the
|
|
'gomp_unref_tgt' comment in
|
|
<http://mid.mail-archive.com/878snl36eu.fsf@euler.schwinge.homeip.net>;
|
|
PR92881. */
|
|
gomp_remove_var_async (acc_dev, n, aq);
|
|
else
|
|
{
|
|
size_t num_mappings = 0;
|
|
/* If the target_mem_desc represents a single data mapping, we can
|
|
check that it is freed when this splay tree key's refcount reaches
|
|
zero. Otherwise (e.g. for a 'GOMP_MAP_STRUCT' mapping with
|
|
multiple members), fall back to skipping the test. */
|
|
for (size_t l_i = 0; l_i < n->tgt->list_count; ++l_i)
|
|
if (n->tgt->list[l_i].key)
|
|
++num_mappings;
|
|
bool is_tgt_unmapped = gomp_remove_var (acc_dev, n);
|
|
assert (is_tgt_unmapped || num_mappings > 1);
|
|
}
|
|
}
|
|
|
|
out:
|
|
gomp_mutex_unlock (&acc_dev->lock);
|
|
|
|
if (profiling_p)
|
|
{
|
|
thr->prof_info = NULL;
|
|
thr->api_info = NULL;
|
|
}
|
|
}
|
|
|
|
void
|
|
acc_delete (void *h , size_t s)
|
|
{
|
|
goacc_exit_datum (h, s, GOMP_MAP_RELEASE, acc_async_sync);
|
|
}
|
|
|
|
void
|
|
acc_delete_async (void *h , size_t s, int async)
|
|
{
|
|
goacc_exit_datum (h, s, GOMP_MAP_RELEASE, async);
|
|
}
|
|
|
|
void
|
|
acc_delete_finalize (void *h , size_t s)
|
|
{
|
|
goacc_exit_datum (h, s, GOMP_MAP_DELETE, acc_async_sync);
|
|
}
|
|
|
|
void
|
|
acc_delete_finalize_async (void *h , size_t s, int async)
|
|
{
|
|
goacc_exit_datum (h, s, GOMP_MAP_DELETE, async);
|
|
}
|
|
|
|
void
|
|
acc_copyout (void *h, size_t s)
|
|
{
|
|
goacc_exit_datum (h, s, GOMP_MAP_FROM, acc_async_sync);
|
|
}
|
|
|
|
void
|
|
acc_copyout_async (void *h, size_t s, int async)
|
|
{
|
|
goacc_exit_datum (h, s, GOMP_MAP_FROM, async);
|
|
}
|
|
|
|
void
|
|
acc_copyout_finalize (void *h, size_t s)
|
|
{
|
|
goacc_exit_datum (h, s, GOMP_MAP_FORCE_FROM, acc_async_sync);
|
|
}
|
|
|
|
void
|
|
acc_copyout_finalize_async (void *h, size_t s, int async)
|
|
{
|
|
goacc_exit_datum (h, s, GOMP_MAP_FORCE_FROM, async);
|
|
}
|
|
|
|
static void
|
|
update_dev_host (int is_dev, void *h, size_t s, int async)
|
|
{
|
|
splay_tree_key n;
|
|
void *d;
|
|
|
|
goacc_lazy_initialize ();
|
|
|
|
struct goacc_thread *thr = goacc_thread ();
|
|
struct gomp_device_descr *acc_dev = thr->dev;
|
|
|
|
if (acc_dev->capabilities & GOMP_OFFLOAD_CAP_SHARED_MEM)
|
|
return;
|
|
|
|
/* Fortran optional arguments that are non-present result in a
|
|
NULL host address here. This can safely be ignored as it is
|
|
not possible to 'update' a non-present optional argument. */
|
|
if (h == NULL)
|
|
return;
|
|
|
|
acc_prof_info prof_info;
|
|
acc_api_info api_info;
|
|
bool profiling_p = GOACC_PROFILING_SETUP_P (thr, &prof_info, &api_info);
|
|
if (profiling_p)
|
|
{
|
|
prof_info.async = async;
|
|
prof_info.async_queue = prof_info.async;
|
|
}
|
|
|
|
gomp_mutex_lock (&acc_dev->lock);
|
|
|
|
n = lookup_host (acc_dev, h, s);
|
|
|
|
if (!n)
|
|
{
|
|
gomp_mutex_unlock (&acc_dev->lock);
|
|
gomp_fatal ("[%p,%d] is not mapped", h, (int)s);
|
|
}
|
|
|
|
d = (void *) (n->tgt->tgt_start + n->tgt_offset
|
|
+ (uintptr_t) h - n->host_start);
|
|
|
|
goacc_aq aq = get_goacc_asyncqueue (async);
|
|
|
|
if (is_dev)
|
|
gomp_copy_host2dev (acc_dev, aq, d, h, s, /* TODO: cbuf? */ NULL);
|
|
else
|
|
gomp_copy_dev2host (acc_dev, aq, h, d, s);
|
|
|
|
gomp_mutex_unlock (&acc_dev->lock);
|
|
|
|
if (profiling_p)
|
|
{
|
|
thr->prof_info = NULL;
|
|
thr->api_info = NULL;
|
|
}
|
|
}
|
|
|
|
void
|
|
acc_update_device (void *h, size_t s)
|
|
{
|
|
update_dev_host (1, h, s, acc_async_sync);
|
|
}
|
|
|
|
void
|
|
acc_update_device_async (void *h, size_t s, int async)
|
|
{
|
|
update_dev_host (1, h, s, async);
|
|
}
|
|
|
|
void
|
|
acc_update_self (void *h, size_t s)
|
|
{
|
|
update_dev_host (0, h, s, acc_async_sync);
|
|
}
|
|
|
|
void
|
|
acc_update_self_async (void *h, size_t s, int async)
|
|
{
|
|
update_dev_host (0, h, s, async);
|
|
}
|
|
|
|
void
|
|
acc_attach_async (void **hostaddr, int async)
|
|
{
|
|
struct goacc_thread *thr = goacc_thread ();
|
|
struct gomp_device_descr *acc_dev = thr->dev;
|
|
goacc_aq aq = get_goacc_asyncqueue (async);
|
|
|
|
struct splay_tree_key_s cur_node;
|
|
splay_tree_key n;
|
|
|
|
if (thr->dev->capabilities & GOMP_OFFLOAD_CAP_SHARED_MEM)
|
|
return;
|
|
|
|
gomp_mutex_lock (&acc_dev->lock);
|
|
|
|
cur_node.host_start = (uintptr_t) hostaddr;
|
|
cur_node.host_end = cur_node.host_start + sizeof (void *);
|
|
n = splay_tree_lookup (&acc_dev->mem_map, &cur_node);
|
|
|
|
if (n == NULL)
|
|
{
|
|
gomp_mutex_unlock (&acc_dev->lock);
|
|
gomp_fatal ("struct not mapped for acc_attach");
|
|
}
|
|
|
|
gomp_attach_pointer (acc_dev, aq, &acc_dev->mem_map, n, (uintptr_t) hostaddr,
|
|
0, NULL);
|
|
|
|
gomp_mutex_unlock (&acc_dev->lock);
|
|
}
|
|
|
|
void
|
|
acc_attach (void **hostaddr)
|
|
{
|
|
acc_attach_async (hostaddr, acc_async_sync);
|
|
}
|
|
|
|
static void
|
|
goacc_detach_internal (void **hostaddr, int async, bool finalize)
|
|
{
|
|
struct goacc_thread *thr = goacc_thread ();
|
|
struct gomp_device_descr *acc_dev = thr->dev;
|
|
struct splay_tree_key_s cur_node;
|
|
splay_tree_key n;
|
|
struct goacc_asyncqueue *aq = get_goacc_asyncqueue (async);
|
|
|
|
if (thr->dev->capabilities & GOMP_OFFLOAD_CAP_SHARED_MEM)
|
|
return;
|
|
|
|
gomp_mutex_lock (&acc_dev->lock);
|
|
|
|
cur_node.host_start = (uintptr_t) hostaddr;
|
|
cur_node.host_end = cur_node.host_start + sizeof (void *);
|
|
n = splay_tree_lookup (&acc_dev->mem_map, &cur_node);
|
|
|
|
if (n == NULL)
|
|
{
|
|
gomp_mutex_unlock (&acc_dev->lock);
|
|
gomp_fatal ("struct not mapped for acc_detach");
|
|
}
|
|
|
|
gomp_detach_pointer (acc_dev, aq, n, (uintptr_t) hostaddr, finalize, NULL);
|
|
|
|
gomp_mutex_unlock (&acc_dev->lock);
|
|
}
|
|
|
|
void
|
|
acc_detach (void **hostaddr)
|
|
{
|
|
goacc_detach_internal (hostaddr, acc_async_sync, false);
|
|
}
|
|
|
|
void
|
|
acc_detach_async (void **hostaddr, int async)
|
|
{
|
|
goacc_detach_internal (hostaddr, async, false);
|
|
}
|
|
|
|
void
|
|
acc_detach_finalize (void **hostaddr)
|
|
{
|
|
goacc_detach_internal (hostaddr, acc_async_sync, true);
|
|
}
|
|
|
|
void
|
|
acc_detach_finalize_async (void **hostaddr, int async)
|
|
{
|
|
goacc_detach_internal (hostaddr, async, true);
|
|
}
|
|
|
|
/* Some types of (pointer) variables use several consecutive mappings, which
|
|
must be treated as a group for enter/exit data directives. This function
|
|
returns the last mapping in such a group (inclusive), or POS for singleton
|
|
mappings. */
|
|
|
|
static int
|
|
find_group_last (int pos, size_t mapnum, size_t *sizes, unsigned short *kinds)
|
|
{
|
|
unsigned char kind0 = kinds[pos] & 0xff;
|
|
int first_pos = pos;
|
|
|
|
switch (kind0)
|
|
{
|
|
case GOMP_MAP_TO_PSET:
|
|
while (pos + 1 < mapnum && (kinds[pos + 1] & 0xff) == GOMP_MAP_POINTER)
|
|
pos++;
|
|
/* We expect at least one GOMP_MAP_POINTER after a GOMP_MAP_TO_PSET. */
|
|
assert (pos > first_pos);
|
|
break;
|
|
|
|
case GOMP_MAP_STRUCT:
|
|
pos += sizes[pos];
|
|
break;
|
|
|
|
case GOMP_MAP_POINTER:
|
|
case GOMP_MAP_ALWAYS_POINTER:
|
|
/* These mappings are only expected after some other mapping. If we
|
|
see one by itself, something has gone wrong. */
|
|
gomp_fatal ("unexpected mapping");
|
|
break;
|
|
|
|
default:
|
|
/* GOMP_MAP_ALWAYS_POINTER can only appear directly after some other
|
|
mapping. */
|
|
if (pos + 1 < mapnum)
|
|
{
|
|
unsigned char kind1 = kinds[pos + 1] & 0xff;
|
|
if (kind1 == GOMP_MAP_ALWAYS_POINTER)
|
|
return pos + 1;
|
|
}
|
|
|
|
/* We can have zero or more GOMP_MAP_POINTER mappings after a to/from
|
|
(etc.) mapping. */
|
|
while (pos + 1 < mapnum && (kinds[pos + 1] & 0xff) == GOMP_MAP_POINTER)
|
|
pos++;
|
|
}
|
|
|
|
return pos;
|
|
}
|
|
|
|
/* Map variables for OpenACC "enter data". We can't just call
|
|
gomp_map_vars_async once, because individual mapped variables might have
|
|
"exit data" called for them at different times. */
|
|
|
|
static void
|
|
goacc_enter_data_internal (struct gomp_device_descr *acc_dev, size_t mapnum,
|
|
void **hostaddrs, size_t *sizes,
|
|
unsigned short *kinds, goacc_aq aq)
|
|
{
|
|
for (size_t i = 0; i < mapnum; i++)
|
|
{
|
|
int group_last = find_group_last (i, mapnum, sizes, kinds);
|
|
|
|
gomp_map_vars_async (acc_dev, aq,
|
|
(group_last - i) + 1,
|
|
&hostaddrs[i], NULL,
|
|
&sizes[i], &kinds[i], true,
|
|
GOMP_MAP_VARS_OPENACC_ENTER_DATA);
|
|
|
|
i = group_last;
|
|
}
|
|
}
|
|
|
|
/* Unmap variables for OpenACC "exit data". */
|
|
|
|
static void
|
|
goacc_exit_data_internal (struct gomp_device_descr *acc_dev, size_t mapnum,
|
|
void **hostaddrs, size_t *sizes,
|
|
unsigned short *kinds, goacc_aq aq)
|
|
{
|
|
gomp_mutex_lock (&acc_dev->lock);
|
|
|
|
/* Handle "detach" before copyback/deletion of mapped data. */
|
|
for (size_t i = 0; i < mapnum; ++i)
|
|
{
|
|
unsigned char kind = kinds[i] & 0xff;
|
|
bool finalize = false;
|
|
switch (kind)
|
|
{
|
|
case GOMP_MAP_FORCE_DETACH:
|
|
finalize = true;
|
|
/* Fallthrough. */
|
|
|
|
case GOMP_MAP_DETACH:
|
|
{
|
|
struct splay_tree_key_s cur_node;
|
|
uintptr_t hostaddr = (uintptr_t) hostaddrs[i];
|
|
cur_node.host_start = hostaddr;
|
|
cur_node.host_end = cur_node.host_start + sizeof (void *);
|
|
splay_tree_key n
|
|
= splay_tree_lookup (&acc_dev->mem_map, &cur_node);
|
|
|
|
if (n == NULL)
|
|
{
|
|
gomp_mutex_unlock (&acc_dev->lock);
|
|
gomp_fatal ("struct not mapped for detach operation");
|
|
}
|
|
|
|
gomp_detach_pointer (acc_dev, aq, n, hostaddr, finalize, NULL);
|
|
}
|
|
break;
|
|
default:
|
|
;
|
|
}
|
|
}
|
|
|
|
for (size_t i = 0; i < mapnum; ++i)
|
|
{
|
|
unsigned char kind = kinds[i] & 0xff;
|
|
bool copyfrom = false;
|
|
bool finalize = false;
|
|
|
|
if (kind == GOMP_MAP_FORCE_FROM
|
|
|| kind == GOMP_MAP_DELETE
|
|
|| kind == GOMP_MAP_FORCE_DETACH)
|
|
finalize = true;
|
|
|
|
switch (kind)
|
|
{
|
|
case GOMP_MAP_FROM:
|
|
case GOMP_MAP_FORCE_FROM:
|
|
copyfrom = true;
|
|
/* Fallthrough. */
|
|
|
|
case GOMP_MAP_TO_PSET:
|
|
case GOMP_MAP_POINTER:
|
|
case GOMP_MAP_DELETE:
|
|
case GOMP_MAP_RELEASE:
|
|
case GOMP_MAP_DETACH:
|
|
case GOMP_MAP_FORCE_DETACH:
|
|
{
|
|
struct splay_tree_key_s cur_node;
|
|
size_t size;
|
|
if (kind == GOMP_MAP_POINTER
|
|
|| kind == GOMP_MAP_DETACH
|
|
|| kind == GOMP_MAP_FORCE_DETACH)
|
|
size = sizeof (void *);
|
|
else
|
|
size = sizes[i];
|
|
cur_node.host_start = (uintptr_t) hostaddrs[i];
|
|
cur_node.host_end = cur_node.host_start + size;
|
|
splay_tree_key n
|
|
= splay_tree_lookup (&acc_dev->mem_map, &cur_node);
|
|
|
|
if (n == NULL)
|
|
continue;
|
|
|
|
if (finalize)
|
|
{
|
|
if (n->refcount != REFCOUNT_INFINITY)
|
|
n->refcount -= n->virtual_refcount;
|
|
n->virtual_refcount = 0;
|
|
}
|
|
|
|
if (n->virtual_refcount > 0)
|
|
{
|
|
if (n->refcount != REFCOUNT_INFINITY)
|
|
n->refcount--;
|
|
n->virtual_refcount--;
|
|
}
|
|
else if (n->refcount > 0 && n->refcount != REFCOUNT_INFINITY)
|
|
n->refcount--;
|
|
|
|
if (copyfrom
|
|
&& (kind != GOMP_MAP_FROM || n->refcount == 0))
|
|
gomp_copy_dev2host (acc_dev, aq, (void *) cur_node.host_start,
|
|
(void *) (n->tgt->tgt_start + n->tgt_offset
|
|
+ cur_node.host_start
|
|
- n->host_start),
|
|
cur_node.host_end - cur_node.host_start);
|
|
|
|
if (n->refcount == 0)
|
|
{
|
|
if (aq)
|
|
/* TODO We can't do the 'is_tgt_unmapped' checking -- see the
|
|
'gomp_unref_tgt' comment in
|
|
<http://mid.mail-archive.com/878snl36eu.fsf@euler.schwinge.homeip.net>;
|
|
PR92881. */
|
|
gomp_remove_var_async (acc_dev, n, aq);
|
|
else
|
|
{
|
|
size_t num_mappings = 0;
|
|
/* If the target_mem_desc represents a single data mapping,
|
|
we can check that it is freed when this splay tree key's
|
|
refcount reaches zero. Otherwise (e.g. for a
|
|
'GOMP_MAP_STRUCT' mapping with multiple members), fall
|
|
back to skipping the test. */
|
|
for (size_t l_i = 0; l_i < n->tgt->list_count; ++l_i)
|
|
if (n->tgt->list[l_i].key)
|
|
++num_mappings;
|
|
bool is_tgt_unmapped = gomp_remove_var (acc_dev, n);
|
|
assert (is_tgt_unmapped || num_mappings > 1);
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
|
|
case GOMP_MAP_STRUCT:
|
|
/* Skip the 'GOMP_MAP_STRUCT' itself, and use the regular processing
|
|
for all its entries. This special handling exists for GCC 10.1
|
|
compatibility; afterwards, we're not generating these no-op
|
|
'GOMP_MAP_STRUCT's anymore. */
|
|
break;
|
|
|
|
default:
|
|
gomp_fatal (">>>> goacc_exit_data_internal UNHANDLED kind 0x%.2x",
|
|
kind);
|
|
}
|
|
}
|
|
|
|
gomp_mutex_unlock (&acc_dev->lock);
|
|
}
|
|
|
|
void
|
|
GOACC_enter_exit_data (int flags_m, size_t mapnum, void **hostaddrs,
|
|
size_t *sizes, unsigned short *kinds, int async,
|
|
int num_waits, ...)
|
|
{
|
|
int flags = GOACC_FLAGS_UNMARSHAL (flags_m);
|
|
|
|
struct goacc_thread *thr;
|
|
struct gomp_device_descr *acc_dev;
|
|
bool data_enter = false;
|
|
size_t i;
|
|
|
|
goacc_lazy_initialize ();
|
|
|
|
thr = goacc_thread ();
|
|
acc_dev = thr->dev;
|
|
|
|
/* Determine if this is an "acc enter data". */
|
|
for (i = 0; i < mapnum; ++i)
|
|
{
|
|
unsigned char kind = kinds[i] & 0xff;
|
|
|
|
if (kind == GOMP_MAP_POINTER
|
|
|| kind == GOMP_MAP_TO_PSET
|
|
|| kind == GOMP_MAP_STRUCT)
|
|
continue;
|
|
|
|
if (kind == GOMP_MAP_FORCE_ALLOC
|
|
|| kind == GOMP_MAP_FORCE_PRESENT
|
|
|| kind == GOMP_MAP_ATTACH
|
|
|| kind == GOMP_MAP_FORCE_TO
|
|
|| kind == GOMP_MAP_TO
|
|
|| kind == GOMP_MAP_ALLOC)
|
|
{
|
|
data_enter = true;
|
|
break;
|
|
}
|
|
|
|
if (kind == GOMP_MAP_RELEASE
|
|
|| kind == GOMP_MAP_DELETE
|
|
|| kind == GOMP_MAP_DETACH
|
|
|| kind == GOMP_MAP_FORCE_DETACH
|
|
|| kind == GOMP_MAP_FROM
|
|
|| kind == GOMP_MAP_FORCE_FROM)
|
|
break;
|
|
|
|
gomp_fatal (">>>> GOACC_enter_exit_data UNHANDLED kind 0x%.2x",
|
|
kind);
|
|
}
|
|
|
|
bool profiling_p = GOACC_PROFILING_DISPATCH_P (true);
|
|
|
|
acc_prof_info prof_info;
|
|
if (profiling_p)
|
|
{
|
|
thr->prof_info = &prof_info;
|
|
|
|
prof_info.event_type
|
|
= data_enter ? acc_ev_enter_data_start : acc_ev_exit_data_start;
|
|
prof_info.valid_bytes = _ACC_PROF_INFO_VALID_BYTES;
|
|
prof_info.version = _ACC_PROF_INFO_VERSION;
|
|
prof_info.device_type = acc_device_type (acc_dev->type);
|
|
prof_info.device_number = acc_dev->target_id;
|
|
prof_info.thread_id = -1;
|
|
prof_info.async = async;
|
|
prof_info.async_queue = prof_info.async;
|
|
prof_info.src_file = NULL;
|
|
prof_info.func_name = NULL;
|
|
prof_info.line_no = -1;
|
|
prof_info.end_line_no = -1;
|
|
prof_info.func_line_no = -1;
|
|
prof_info.func_end_line_no = -1;
|
|
}
|
|
acc_event_info enter_exit_data_event_info;
|
|
if (profiling_p)
|
|
{
|
|
enter_exit_data_event_info.other_event.event_type
|
|
= prof_info.event_type;
|
|
enter_exit_data_event_info.other_event.valid_bytes
|
|
= _ACC_OTHER_EVENT_INFO_VALID_BYTES;
|
|
enter_exit_data_event_info.other_event.parent_construct
|
|
= data_enter ? acc_construct_enter_data : acc_construct_exit_data;
|
|
enter_exit_data_event_info.other_event.implicit = 0;
|
|
enter_exit_data_event_info.other_event.tool_info = NULL;
|
|
}
|
|
acc_api_info api_info;
|
|
if (profiling_p)
|
|
{
|
|
thr->api_info = &api_info;
|
|
|
|
api_info.device_api = acc_device_api_none;
|
|
api_info.valid_bytes = _ACC_API_INFO_VALID_BYTES;
|
|
api_info.device_type = prof_info.device_type;
|
|
api_info.vendor = -1;
|
|
api_info.device_handle = NULL;
|
|
api_info.context_handle = NULL;
|
|
api_info.async_handle = NULL;
|
|
}
|
|
|
|
if (profiling_p)
|
|
goacc_profiling_dispatch (&prof_info, &enter_exit_data_event_info,
|
|
&api_info);
|
|
|
|
if ((acc_dev->capabilities & GOMP_OFFLOAD_CAP_SHARED_MEM)
|
|
|| (flags & GOACC_FLAG_HOST_FALLBACK))
|
|
{
|
|
prof_info.device_type = acc_device_host;
|
|
api_info.device_type = prof_info.device_type;
|
|
|
|
goto out_prof;
|
|
}
|
|
|
|
if (num_waits)
|
|
{
|
|
va_list ap;
|
|
|
|
va_start (ap, num_waits);
|
|
goacc_wait (async, num_waits, &ap);
|
|
va_end (ap);
|
|
}
|
|
|
|
goacc_aq aq = get_goacc_asyncqueue (async);
|
|
|
|
if (data_enter)
|
|
goacc_enter_data_internal (acc_dev, mapnum, hostaddrs, sizes, kinds, aq);
|
|
else
|
|
goacc_exit_data_internal (acc_dev, mapnum, hostaddrs, sizes, kinds, aq);
|
|
|
|
out_prof:
|
|
if (profiling_p)
|
|
{
|
|
prof_info.event_type
|
|
= data_enter ? acc_ev_enter_data_end : acc_ev_exit_data_end;
|
|
enter_exit_data_event_info.other_event.event_type = prof_info.event_type;
|
|
goacc_profiling_dispatch (&prof_info, &enter_exit_data_event_info,
|
|
&api_info);
|
|
|
|
thr->prof_info = NULL;
|
|
thr->api_info = NULL;
|
|
}
|
|
}
|