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/* -*- Mode: C; c-basic-offset:4 ; -*- */
/*
* Copyright (c) 2004-2017 The University of Tennessee and The University
* of Tennessee Research Foundation. All rights
* reserved.
* Copyright (c) 2009 Oak Ridge National Labs. All rights reserved.
* Copyright (c) 2015-2018 Research Organization for Information Science
* and Technology (RIST). All rights reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#ifdef HAVE_ALLOCA_H
# include <alloca.h>
#endif
#if !defined(MEM_OP_NAME)
# error
#endif /* !defined((MEM_OP_NAME) */
#if !defined(MEM_OP)
# error
#endif /* !defined(MEM_OP) */
#if !defined(MEM_OP_BLOCK_SIZE)
# error
#endif /* !defined(MEM_OP_BLOCK_SIZE) */
#ifndef STRINGIFY
# define STRINGIFY_(arg) # arg
# define STRINGIFY(arg) STRINGIFY_(arg)
#endif
#ifndef DT_CONCAT
# define DT__CONCAT(a, b) a##b
# define DT_CONCAT(a, b) DT__CONCAT(a, b)
#endif
#define _predefined_data DT_CONCAT(MEM_OP_NAME, _predefined_data)
#define _contiguous_loop DT_CONCAT(MEM_OP_NAME, _contiguous_loop)
#define _copy_content_same_ddt DT_CONCAT(MEM_OP_NAME, _copy_content_same_ddt)
static inline void _predefined_data(const dt_elem_desc_t *ELEM, const opal_datatype_t *DATATYPE,
unsigned char *SOURCE_BASE, size_t TOTAL_COUNT, size_t COUNT,
unsigned char *SOURCE, unsigned char *DESTINATION,
size_t *SPACE)
{
const ddt_elem_desc_t *_elem = &((ELEM)->elem);
unsigned char *_source = (SOURCE) + _elem->disp;
unsigned char *_destination = (DESTINATION) + _elem->disp;
size_t do_now = _elem->count, do_now_bytes;
assert((COUNT) == (do_now * _elem->blocklen));
/* We don't a prologue and epilogue here as we are __always__ working
* with full copies of the data description.
*/
/**
* Compute how many full blocklen we need to do and do them.
*/
do_now_bytes = _elem->blocklen * opal_datatype_basicDatatypes[_elem->common.type]->size;
assert((do_now * do_now_bytes) <= (*SPACE));
for (size_t _i = 0; _i < do_now; _i++) {
OPAL_DATATYPE_SAFEGUARD_POINTER(_source, do_now_bytes, (SOURCE_BASE), (DATATYPE),
(TOTAL_COUNT));
DO_DEBUG(opal_output(0, "copy %s( %p, %p, %" PRIsize_t " ) => space %" PRIsize_t "\n",
STRINGIFY(MEM_OP_NAME), (void *) _destination, (void *) _source,
do_now_bytes, *(SPACE) -_i * do_now_bytes););
MEM_OP(_destination, _source, do_now_bytes);
_destination += _elem->extent;
_source += _elem->extent;
}
*(SPACE) -= (do_now_bytes * do_now);
}
static inline void _contiguous_loop(const dt_elem_desc_t *ELEM, const opal_datatype_t *DATATYPE,
unsigned char *SOURCE_BASE, size_t TOTAL_COUNT, size_t COUNT,
unsigned char *SOURCE, unsigned char *DESTINATION,
size_t *SPACE)
{
ddt_loop_desc_t *_loop = (ddt_loop_desc_t *) (ELEM);
ddt_endloop_desc_t *_end_loop = (ddt_endloop_desc_t *) ((ELEM) + _loop->items);
unsigned char *_source = (SOURCE) + _end_loop->first_elem_disp;
unsigned char *_destination = (DESTINATION) + _end_loop->first_elem_disp;
size_t _copy_loops = (COUNT);
if (_loop->extent == (ptrdiff_t) _end_loop->size) { /* the loop is contiguous */
_copy_loops *= _end_loop->size;
OPAL_DATATYPE_SAFEGUARD_POINTER(_source, _copy_loops, (SOURCE_BASE), (DATATYPE),
(TOTAL_COUNT));
MEM_OP(_destination, _source, _copy_loops);
} else {
for (size_t _i = 0; _i < _copy_loops; _i++) {
OPAL_DATATYPE_SAFEGUARD_POINTER(_source, _end_loop->size, (SOURCE_BASE), (DATATYPE),
(TOTAL_COUNT));
DO_DEBUG(opal_output(0,
"copy 3. %s( %p, %p, %" PRIsize_t " ) => space %" PRIsize_t "\n",
STRINGIFY(MEM_OP_NAME), (void *) _destination, (void *) _source,
_end_loop->size, *(SPACE) -_i * _end_loop->size););
MEM_OP(_destination, _source, _end_loop->size);
_source += _loop->extent;
_destination += _loop->extent;
}
_copy_loops *= _end_loop->size;
}
*(SPACE) -= _copy_loops;
}
static inline int32_t _copy_content_same_ddt(const opal_datatype_t *datatype, int32_t count,
char *destination_base, char *source_base)
{
dt_stack_t *pStack; /* pointer to the position on the stack */
int32_t stack_pos; /* index of the stack level */
uint32_t pos_desc; /* actual position in the description of the derived datatype */
uint32_t count_desc; /* the number of items already done in the actual pos_desc */
dt_elem_desc_t *description;
dt_elem_desc_t *pElem;
size_t iov_len_local;
unsigned char *source = (unsigned char *) source_base,
*destination = (unsigned char *) destination_base;
DO_DEBUG(opal_output(0, "_copy_content_same_ddt( %p, %d, dst %p, src %p )\n", (void *) datatype,
count, (void *) destination_base, (void *) source_base););
iov_len_local = (size_t) count * datatype->size;
/* If we have to copy a contiguous datatype then simply
* do a MEM_OP.
*/
if (datatype->flags & OPAL_DATATYPE_FLAG_CONTIGUOUS) {
ptrdiff_t extent = (datatype->ub - datatype->lb);
/* Now that we know the datatype is contiguous, we should move the 2 pointers
* source and destination to the correct displacement.
*/
destination += datatype->true_lb;
source += datatype->true_lb;
if ((ptrdiff_t) datatype->size == extent) { /* all contiguous == no gaps around */
size_t total_length = iov_len_local;
size_t memop_chunk = MEM_OP_BLOCK_SIZE;
OPAL_DATATYPE_SAFEGUARD_POINTER(source, iov_len_local, (unsigned char *) source_base,
datatype, count);
while (total_length > 0) {
if (memop_chunk > total_length)
memop_chunk = total_length;
DO_DEBUG(opal_output(0, "copy c1. %s( %p, %p, %lu ) => space %lu\n",
STRINGIFY(MEM_OP_NAME), (void *) destination, (void *) source,
(unsigned long) memop_chunk, (unsigned long) total_length););
MEM_OP(destination, source, memop_chunk);
destination += memop_chunk;
source += memop_chunk;
total_length -= memop_chunk;
}
return 0; /* completed */
}
for (pos_desc = 0; (int32_t) pos_desc < count; pos_desc++) {
OPAL_DATATYPE_SAFEGUARD_POINTER(destination, datatype->size,
(unsigned char *) destination_base, datatype, count);
OPAL_DATATYPE_SAFEGUARD_POINTER(source, datatype->size, (unsigned char *) source_base,
datatype, count);
DO_DEBUG(opal_output(0, "copy c2. %s( %p, %p, %lu ) => space %lu\n",
STRINGIFY(MEM_OP_NAME), (void *) destination, (void *) source,
(unsigned long) datatype->size,
(unsigned long) (iov_len_local - (pos_desc * datatype->size))););
MEM_OP(destination, source, datatype->size);
destination += extent;
source += extent;
}
return 0; /* completed */
}
pStack = (dt_stack_t *) alloca(sizeof(dt_stack_t) * (datatype->loops + 1));
pStack->count = count;
pStack->index = -1;
pStack->disp = 0;
pos_desc = 0;
stack_pos = 0;
description = datatype->opt_desc.desc;
if (NULL == description) {
description = datatype->desc.desc;
}
UPDATE_INTERNAL_COUNTERS(description, 0, pElem, count_desc);
while (1) {
while (OPAL_LIKELY(pElem->elem.common.flags & OPAL_DATATYPE_FLAG_DATA)) {
/* now here we have a basic datatype */
_predefined_data(pElem, datatype, (unsigned char *) source_base, count, count_desc,
source, destination, &iov_len_local);
pos_desc++; /* advance to the next data */
UPDATE_INTERNAL_COUNTERS(description, pos_desc, pElem, count_desc);
}
if (OPAL_DATATYPE_END_LOOP == pElem->elem.common.type) { /* end of the current loop */
DO_DEBUG(opal_output(0,
"copy end_loop count %" PRIsize_t
" stack_pos %d pos_desc %d disp %ld space %lu\n",
pStack->count, stack_pos, pos_desc, pStack->disp,
(unsigned long) iov_len_local););
if (--(pStack->count) == 0) { /* end of loop */
if (stack_pos == 0) {
assert(iov_len_local == 0);
return 0; /* completed */
}
stack_pos--;
pStack--;
pos_desc++;
} else {
pos_desc = pStack->index + 1;
if (pStack->index == -1) {
pStack->disp += (datatype->ub - datatype->lb);
} else {
assert(OPAL_DATATYPE_LOOP == description[pStack->index].loop.common.type);
pStack->disp += description[pStack->index].loop.extent;
}
}
source = (unsigned char *) source_base + pStack->disp;
destination = (unsigned char *) destination_base + pStack->disp;
UPDATE_INTERNAL_COUNTERS(description, pos_desc, pElem, count_desc);
DO_DEBUG(opal_output(0,
"copy new_loop count %" PRIsize_t
" stack_pos %d pos_desc %d disp %ld space %lu\n",
pStack->count, stack_pos, pos_desc, pStack->disp,
(unsigned long) iov_len_local););
}
if (OPAL_DATATYPE_LOOP == pElem->elem.common.type) {
ptrdiff_t local_disp = (ptrdiff_t) source;
if (pElem->loop.common.flags & OPAL_DATATYPE_FLAG_CONTIGUOUS) {
_contiguous_loop(pElem, datatype, (unsigned char *) source_base, count, count_desc,
source, destination, &iov_len_local);
pos_desc += pElem->loop.items + 1;
goto update_loop_description;
}
local_disp = (ptrdiff_t) source - local_disp;
PUSH_STACK(pStack, stack_pos, pos_desc, OPAL_DATATYPE_LOOP, count_desc,
pStack->disp + local_disp);
pos_desc++;
update_loop_description: /* update the current state */
source = (unsigned char *) source_base + pStack->disp;
destination = (unsigned char *) destination_base + pStack->disp;
UPDATE_INTERNAL_COUNTERS(description, pos_desc, pElem, count_desc);
DDT_DUMP_STACK(pStack, stack_pos, pElem, "advance loop");
continue;
}
}
}
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