void
gomp_acc_remove_pointer (void *h, bool force_copyfrom, int async, int mapnum)
{
struct goacc_thread *thr = goacc_thread ();
struct gomp_device_descr *acc_dev = thr->dev;
splay_tree_key n;
struct target_mem_desc *t;
int minrefs = (mapnum == 1) ? 2 : 3;
gomp_mutex_lock (&acc_dev->lock);
n = lookup_host (acc_dev, h, 1);
if (!n)
{
gomp_mutex_unlock (&acc_dev->lock);
gomp_fatal ("%p is not a mapped block", (void *)h);
}
gomp_debug (0, " %s: restore mappings\n", __FUNCTION__);
t = n->tgt;
struct target_mem_desc *tp;
if (t->refcount == minrefs)
{
/* This is the last reference, so pull the descriptor off the
chain. This avoids gomp_unmap_vars via gomp_unmap_tgt from
freeing the device memory. */
t->tgt_end = 0;
t->to_free = 0;
for (tp = NULL, t = acc_dev->openacc.data_environ; t != NULL;
tp = t, t = t->prev)
{
if (n->tgt == t)
{
if (tp)
tp->prev = t->prev;
else
acc_dev->openacc.data_environ = t->prev;
break;
}
}
}
if (force_copyfrom)
t->list[0].copy_from = 1;
gomp_mutex_unlock (&acc_dev->lock);
/* If running synchronously, unmap immediately. */
if (async < acc_async_noval)
gomp_unmap_vars (t, true);
else
t->device_descr->openacc.register_async_cleanup_func (t, async);
gomp_debug (0, " %s: mappings restored\n", __FUNCTION__);
}
void
acc_unmap_data (void *h)
{
struct goacc_thread *thr = goacc_thread ();
struct gomp_device_descr *acc_dev = thr->dev;
/* No need to call lazy open, as the address must have been mapped. */
size_t host_size;
gomp_mutex_lock (&acc_dev->lock);
splay_tree_key n = lookup_host (acc_dev, h, 1);
struct target_mem_desc *t;
if (!n)
{
gomp_mutex_unlock (&acc_dev->lock);
gomp_fatal ("%p is not a mapped block", (void *)h);
}
host_size = n->host_end - n->host_start;
if (n->host_start != (uintptr_t) h)
{
gomp_mutex_unlock (&acc_dev->lock);
gomp_fatal ("[%p,%d] surrounds %p",
(void *) n->host_start, (int) host_size, (void *) h);
}
t = n->tgt;
if (t->refcount == 2)
{
struct target_mem_desc *tp;
/* This is the last reference, so pull the descriptor off the
chain. This avoids gomp_unmap_vars via gomp_unmap_tgt from
freeing the device memory. */
t->tgt_end = 0;
t->to_free = 0;
for (tp = NULL, t = acc_dev->openacc.data_environ; t != NULL;
tp = t, t = t->prev)
if (n->tgt == t)
{
if (tp)
tp->prev = t->prev;
else
acc_dev->openacc.data_environ = t->prev;
break;
}
}
gomp_mutex_unlock (&acc_dev->lock);
gomp_unmap_vars (t, true);
}
void
GOMP_PLUGIN_async_unmap_vars (void *ptr, int async)
{
struct target_mem_desc *tgt = ptr;
struct gomp_device_descr *devicep = tgt->device_descr;
devicep->openacc.async_set_async_func (async);
gomp_unmap_vars (tgt, true);
devicep->openacc.async_set_async_func (acc_async_sync);
}
void
GOACC_data_end (void)
{
struct goacc_thread *thr = goacc_thread ();
struct target_mem_desc *tgt = thr->mapped_data;
gomp_debug (0, " %s: restore mappings\n", __FUNCTION__);
thr->mapped_data = tgt->prev;
gomp_unmap_vars (tgt, true);
gomp_debug (0, " %s: mappings restored\n", __FUNCTION__);
}
void
GOACC_parallel (int device, void (*fn) (void *), const void *offload_table,
size_t mapnum, void **hostaddrs, size_t *sizes,
unsigned short *kinds,
int num_gangs, int num_workers, int vector_length,
int async, int num_waits, ...)
{
bool host_fallback = device == GOMP_DEVICE_HOST_FALLBACK;
va_list ap;
struct goacc_thread *thr;
struct gomp_device_descr *acc_dev;
struct target_mem_desc *tgt;
void **devaddrs;
unsigned int i;
struct splay_tree_key_s k;
splay_tree_key tgt_fn_key;
void (*tgt_fn);
if (num_gangs != 1)
gomp_fatal ("num_gangs (%d) different from one is not yet supported",
num_gangs);
if (num_workers != 1)
gomp_fatal ("num_workers (%d) different from one is not yet supported",
num_workers);
gomp_debug (0, "%s: mapnum=%zd, hostaddrs=%p, sizes=%p, kinds=%p, async=%d\n",
__FUNCTION__, mapnum, hostaddrs, sizes, kinds, async);
select_acc_device (device);
thr = goacc_thread ();
acc_dev = thr->dev;
/* Host fallback if "if" clause is false or if the current device is set to
the host. */
if (host_fallback)
{
goacc_save_and_set_bind (acc_device_host);
fn (hostaddrs);
goacc_restore_bind ();
return;
}
else if (acc_device_type (acc_dev->type) == acc_device_host)
{
fn (hostaddrs);
return;
}
va_start (ap, num_waits);
if (num_waits > 0)
goacc_wait (async, num_waits, ap);
va_end (ap);
acc_dev->openacc.async_set_async_func (async);
if (!(acc_dev->capabilities & GOMP_OFFLOAD_CAP_NATIVE_EXEC))
{
k.host_start = (uintptr_t) fn;
k.host_end = k.host_start + 1;
gomp_mutex_lock (&acc_dev->mem_map.lock);
tgt_fn_key = splay_tree_lookup (&acc_dev->mem_map.splay_tree, &k);
gomp_mutex_unlock (&acc_dev->mem_map.lock);
if (tgt_fn_key == NULL)
gomp_fatal ("target function wasn't mapped");
tgt_fn = (void (*)) tgt_fn_key->tgt->tgt_start;
}
else
tgt_fn = (void (*)) fn;
tgt = gomp_map_vars (acc_dev, mapnum, hostaddrs, NULL, sizes, kinds, true,
false);
devaddrs = alloca (sizeof (void *) * mapnum);
for (i = 0; i < mapnum; i++)
devaddrs[i] = (void *) (tgt->list[i]->tgt->tgt_start
+ tgt->list[i]->tgt_offset);
acc_dev->openacc.exec_func (tgt_fn, mapnum, hostaddrs, devaddrs, sizes, kinds,
num_gangs, num_workers, vector_length, async,
tgt);
/* If running synchronously, unmap immediately. */
if (async < acc_async_noval)
gomp_unmap_vars (tgt, true);
else
{
gomp_copy_from_async (tgt);
acc_dev->openacc.register_async_cleanup_func (tgt);
}
acc_dev->openacc.async_set_async_func (acc_async_sync);
}
void
GOACC_parallel_keyed (int device, void (*fn) (void *),
size_t mapnum, void **hostaddrs, size_t *sizes,
unsigned short *kinds, ...)
{
bool host_fallback = device == GOMP_DEVICE_HOST_FALLBACK;
va_list ap;
struct goacc_thread *thr;
struct gomp_device_descr *acc_dev;
struct target_mem_desc *tgt;
void **devaddrs;
unsigned int i;
struct splay_tree_key_s k;
splay_tree_key tgt_fn_key;
void (*tgt_fn);
int async = GOMP_ASYNC_SYNC;
unsigned dims[GOMP_DIM_MAX];
unsigned tag;
#ifdef HAVE_INTTYPES_H
gomp_debug (0, "%s: mapnum=%"PRIu64", hostaddrs=%p, size=%p, kinds=%p\n",
__FUNCTION__, (uint64_t) mapnum, hostaddrs, sizes, kinds);
#else
gomp_debug (0, "%s: mapnum=%lu, hostaddrs=%p, sizes=%p, kinds=%p\n",
__FUNCTION__, (unsigned long) mapnum, hostaddrs, sizes, kinds);
#endif
goacc_lazy_initialize ();
thr = goacc_thread ();
acc_dev = thr->dev;
/* Host fallback if "if" clause is false or if the current device is set to
the host. */
if (host_fallback)
{
goacc_save_and_set_bind (acc_device_host);
fn (hostaddrs);
goacc_restore_bind ();
return;
}
else if (acc_device_type (acc_dev->type) == acc_device_host)
{
fn (hostaddrs);
return;
}
va_start (ap, kinds);
/* TODO: This will need amending when device_type is implemented. */
while ((tag = va_arg (ap, unsigned)) != 0)
{
if (GOMP_LAUNCH_DEVICE (tag))
gomp_fatal ("device_type '%d' offload parameters, libgomp is too old",
GOMP_LAUNCH_DEVICE (tag));
switch (GOMP_LAUNCH_CODE (tag))
{
case GOMP_LAUNCH_DIM:
{
unsigned mask = GOMP_LAUNCH_OP (tag);
for (i = 0; i != GOMP_DIM_MAX; i++)
if (mask & GOMP_DIM_MASK (i))
dims[i] = va_arg (ap, unsigned);
}
break;
case GOMP_LAUNCH_ASYNC:
{
/* Small constant values are encoded in the operand. */
async = GOMP_LAUNCH_OP (tag);
if (async == GOMP_LAUNCH_OP_MAX)
async = va_arg (ap, unsigned);
break;
}
case GOMP_LAUNCH_WAIT:
{
unsigned num_waits = GOMP_LAUNCH_OP (tag);
if (num_waits)
goacc_wait (async, num_waits, &ap);
break;
}
default:
gomp_fatal ("unrecognized offload code '%d',"
" libgomp is too old", GOMP_LAUNCH_CODE (tag));
}
}
va_end (ap);
acc_dev->openacc.async_set_async_func (async);
if (!(acc_dev->capabilities & GOMP_OFFLOAD_CAP_NATIVE_EXEC))
{
k.host_start = (uintptr_t) fn;
k.host_end = k.host_start + 1;
gomp_mutex_lock (&acc_dev->lock);
tgt_fn_key = splay_tree_lookup (&acc_dev->mem_map, &k);
gomp_mutex_unlock (&acc_dev->lock);
if (tgt_fn_key == NULL)
gomp_fatal ("target function wasn't mapped");
tgt_fn = (void (*)) tgt_fn_key->tgt_offset;
}
else
tgt_fn = (void (*)) fn;
tgt = gomp_map_vars (acc_dev, mapnum, hostaddrs, NULL, sizes, kinds, true,
GOMP_MAP_VARS_OPENACC);
devaddrs = gomp_alloca (sizeof (void *) * mapnum);
for (i = 0; i < mapnum; i++)
devaddrs[i] = (void *) (tgt->list[i].key->tgt->tgt_start
+ tgt->list[i].key->tgt_offset);
acc_dev->openacc.exec_func (tgt_fn, mapnum, hostaddrs, devaddrs,
async, dims, tgt);
/* If running synchronously, unmap immediately. */
if (async < acc_async_noval)
gomp_unmap_vars (tgt, true);
else
{
gomp_copy_from_async (tgt);
acc_dev->openacc.register_async_cleanup_func (tgt);
}
acc_dev->openacc.async_set_async_func (acc_async_sync);
}