1 /* smpi_datatype.cpp -- MPI primitives to handle datatypes */
2 /* Copyright (c) 2009-2021. The SimGrid Team. All rights reserved. */
4 /* This program is free software; you can redistribute it and/or modify it
5 * under the terms of the license (GNU LGPL) which comes with this package. */
8 #include "simgrid/modelchecker.h"
9 #include "smpi_datatype_derived.hpp"
10 #include "smpi_op.hpp"
11 #include "src/instr/instr_private.hpp"
12 #include "src/smpi/include/smpi_actor.hpp"
20 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(smpi_datatype, smpi, "Logging specific to SMPI (datatype)");
22 static std::unordered_map<std::string, simgrid::smpi::Datatype*> id2type_lookup;
24 #define CREATE_MPI_DATATYPE(name, id, type, flag) \
25 simgrid::smpi::Datatype _XBT_CONCAT(smpi_MPI_, name)((char*)"MPI_"#name, (id), sizeof(type), /* size */ \
27 sizeof(type), /* ub = lb + size */ \
28 DT_FLAG_BASIC | flag /* flags */ \
31 #define CREATE_MPI_DATATYPE_NULL(name, id) \
32 simgrid::smpi::Datatype _XBT_CONCAT(smpi_MPI_, name)((char*)"MPI_"#name, (id), 0, /* size */ \
34 0, /* ub = lb + size */ \
35 DT_FLAG_BASIC /* flags */ \
38 // Predefined data types
39 CREATE_MPI_DATATYPE_NULL(DATATYPE_NULL, -1)
40 CREATE_MPI_DATATYPE(DOUBLE, 0, double, DT_FLAG_FP)
41 CREATE_MPI_DATATYPE(INT, 1, int, DT_FLAG_C_INTEGER)
42 CREATE_MPI_DATATYPE(CHAR, 2, char, DT_FLAG_C_INTEGER)
43 CREATE_MPI_DATATYPE(SHORT, 3, short, DT_FLAG_C_INTEGER)
44 CREATE_MPI_DATATYPE(LONG, 4, long, DT_FLAG_C_INTEGER)
45 CREATE_MPI_DATATYPE(FLOAT, 5, float, DT_FLAG_FP)
46 CREATE_MPI_DATATYPE(BYTE, 6, int8_t, DT_FLAG_BYTE)
47 CREATE_MPI_DATATYPE(LONG_LONG, 7, long long, DT_FLAG_C_INTEGER)
48 CREATE_MPI_DATATYPE(SIGNED_CHAR, 8, signed char, DT_FLAG_C_INTEGER)
49 CREATE_MPI_DATATYPE(UNSIGNED_CHAR, 9, unsigned char, DT_FLAG_C_INTEGER)
50 CREATE_MPI_DATATYPE(UNSIGNED_SHORT, 10, unsigned short, DT_FLAG_C_INTEGER)
51 CREATE_MPI_DATATYPE(UNSIGNED, 11, unsigned int, DT_FLAG_C_INTEGER)
52 CREATE_MPI_DATATYPE(UNSIGNED_LONG, 12, unsigned long, DT_FLAG_C_INTEGER)
53 CREATE_MPI_DATATYPE(UNSIGNED_LONG_LONG, 13, unsigned long long, DT_FLAG_C_INTEGER)
54 CREATE_MPI_DATATYPE(LONG_DOUBLE, 14, long double, DT_FLAG_FP)
55 CREATE_MPI_DATATYPE(WCHAR, 15, wchar_t, DT_FLAG_BASIC)
56 CREATE_MPI_DATATYPE(C_BOOL, 16, bool, DT_FLAG_LOGICAL)
57 CREATE_MPI_DATATYPE(INT8_T, 17, int8_t, DT_FLAG_C_INTEGER)
58 CREATE_MPI_DATATYPE(INT16_T, 18, int16_t, DT_FLAG_C_INTEGER)
59 CREATE_MPI_DATATYPE(INT32_T, 19, int32_t, DT_FLAG_C_INTEGER)
60 CREATE_MPI_DATATYPE(INT64_T, 20, int64_t, DT_FLAG_C_INTEGER)
61 CREATE_MPI_DATATYPE(UINT8_T, 21, uint8_t, DT_FLAG_C_INTEGER)
62 CREATE_MPI_DATATYPE(UINT16_T, 22, uint16_t, DT_FLAG_C_INTEGER)
63 CREATE_MPI_DATATYPE(UINT32_T, 23, uint32_t, DT_FLAG_C_INTEGER)
64 CREATE_MPI_DATATYPE(UINT64_T, 24, uint64_t, DT_FLAG_C_INTEGER)
65 CREATE_MPI_DATATYPE(C_FLOAT_COMPLEX, 25, float _Complex, DT_FLAG_COMPLEX)
66 CREATE_MPI_DATATYPE(C_DOUBLE_COMPLEX, 26, double _Complex, DT_FLAG_COMPLEX)
67 CREATE_MPI_DATATYPE(C_LONG_DOUBLE_COMPLEX, 27, long double _Complex, DT_FLAG_COMPLEX)
68 CREATE_MPI_DATATYPE(AINT, 28, MPI_Aint, DT_FLAG_MULTILANG)
69 CREATE_MPI_DATATYPE(OFFSET, 29, MPI_Offset, DT_FLAG_MULTILANG)
71 CREATE_MPI_DATATYPE(FLOAT_INT, 30, float_int, DT_FLAG_REDUCTION)
72 CREATE_MPI_DATATYPE(LONG_INT, 31, long_int, DT_FLAG_REDUCTION)
73 CREATE_MPI_DATATYPE(DOUBLE_INT, 32, double_int, DT_FLAG_REDUCTION)
74 CREATE_MPI_DATATYPE(SHORT_INT, 33, short_int, DT_FLAG_REDUCTION)
75 CREATE_MPI_DATATYPE(2INT, 34, int_int, DT_FLAG_REDUCTION)
76 CREATE_MPI_DATATYPE(2FLOAT, 35, float_float, DT_FLAG_REDUCTION)
77 CREATE_MPI_DATATYPE(2DOUBLE, 36, double_double, DT_FLAG_REDUCTION)
78 CREATE_MPI_DATATYPE(2LONG, 37, long_long, DT_FLAG_REDUCTION)
80 CREATE_MPI_DATATYPE(REAL, 38, float, DT_FLAG_FP)
81 CREATE_MPI_DATATYPE(REAL4, 39, float, DT_FLAG_FP)
82 CREATE_MPI_DATATYPE(REAL8, 40, double, DT_FLAG_FP)
83 CREATE_MPI_DATATYPE(REAL16, 41, long double, DT_FLAG_FP)
84 CREATE_MPI_DATATYPE(COMPLEX8, 42, float_float, DT_FLAG_COMPLEX)
85 CREATE_MPI_DATATYPE(COMPLEX16, 43, double_double, DT_FLAG_COMPLEX)
86 CREATE_MPI_DATATYPE(COMPLEX32, 44, double_double, DT_FLAG_COMPLEX)
87 CREATE_MPI_DATATYPE(INTEGER1, 45, int, DT_FLAG_F_INTEGER)
88 CREATE_MPI_DATATYPE(INTEGER2, 46, int16_t, DT_FLAG_F_INTEGER)
89 CREATE_MPI_DATATYPE(INTEGER4, 47, int32_t, DT_FLAG_F_INTEGER)
90 CREATE_MPI_DATATYPE(INTEGER8, 48, int64_t, DT_FLAG_F_INTEGER)
91 CREATE_MPI_DATATYPE(INTEGER16, 49, integer128_t, DT_FLAG_F_INTEGER)
93 CREATE_MPI_DATATYPE(LONG_DOUBLE_INT, 50, long_double_int, DT_FLAG_REDUCTION)
94 CREATE_MPI_DATATYPE(CXX_BOOL, 51, bool, DT_FLAG_LOGICAL)
95 CREATE_MPI_DATATYPE(CXX_FLOAT_COMPLEX, 52, std::complex<float>, DT_FLAG_COMPLEX)
96 CREATE_MPI_DATATYPE(CXX_DOUBLE_COMPLEX, 53, std::complex<double>, DT_FLAG_COMPLEX)
97 CREATE_MPI_DATATYPE(CXX_LONG_DOUBLE_COMPLEX, 54, std::complex<long double>, DT_FLAG_COMPLEX)
99 CREATE_MPI_DATATYPE_NULL(UB, 55)
100 CREATE_MPI_DATATYPE_NULL(LB, 56)
101 CREATE_MPI_DATATYPE(PACKED, 57, char, DT_FLAG_PREDEFINED)
103 CREATE_MPI_DATATYPE(PTR, 58, void*, DT_FLAG_PREDEFINED)
104 CREATE_MPI_DATATYPE(COUNT, 59, long long, DT_FLAG_MULTILANG)
105 MPI_Datatype MPI_PTR = &smpi_MPI_PTR;
111 std::unordered_map<int, smpi_key_elem> Datatype::keyvals_; // required by the Keyval class implementation
112 int Datatype::keyval_id_=0; // required by the Keyval class implementation
113 Datatype::Datatype(int ident, int size, MPI_Aint lb, MPI_Aint ub, int flags) : Datatype(size, lb, ub, flags)
115 id = std::to_string(ident);
118 Datatype::Datatype(int size, MPI_Aint lb, MPI_Aint ub, int flags) : size_(size), lb_(lb), ub_(ub), flags_(flags)
123 MC_ignore(&refcount_, sizeof refcount_);
127 // for predefined types, so refcount_ = 0.
128 Datatype::Datatype(const char* name, int ident, int size, MPI_Aint lb, MPI_Aint ub, int flags)
129 : name_(name), id(std::to_string(ident)), size_(size), lb_(lb), ub_(ub), flags_(flags), refcount_(0)
131 id2type_lookup.insert({id, this});
134 MC_ignore(&refcount_, sizeof refcount_);
138 Datatype::Datatype(Datatype* datatype, int* ret)
139 : size_(datatype->size_), lb_(datatype->lb_), ub_(datatype->ub_), flags_(datatype->flags_)
142 *ret = this->copy_attrs(datatype);
145 Datatype::~Datatype()
147 xbt_assert(refcount_ >= 0);
149 if(flags_ & DT_FLAG_PREDEFINED)
151 //prevent further usage
152 flags_ &= ~ DT_FLAG_COMMITED;
153 F2C::free_f(this->f2c_id());
154 //if still used, mark for deletion
156 flags_ |=DT_FLAG_DESTROYED;
159 cleanup_attr<Datatype>();
162 int Datatype::copy_attrs(Datatype* datatype){
163 flags_ &= ~DT_FLAG_PREDEFINED;
164 int ret = MPI_SUCCESS;
166 for (auto const& it : datatype->attributes()) {
167 auto elem_it = keyvals_.find(it.first);
168 if (elem_it != keyvals_.end()) {
169 smpi_key_elem& elem = elem_it->second;
171 void* value_out = nullptr;
172 if (elem.copy_fn.type_copy_fn == MPI_TYPE_DUP_FN) {
173 value_out = it.second;
175 } else if (elem.copy_fn.type_copy_fn != MPI_NULL_COPY_FN) {
176 ret = elem.copy_fn.type_copy_fn(datatype, it.first, elem.extra_state, it.second, &value_out, &flag);
178 if (elem.copy_fn.type_copy_fn_fort != MPI_NULL_COPY_FN) {
179 value_out = xbt_new(int, 1);
180 if (*(int*)*elem.copy_fn.type_copy_fn_fort == 1) { // MPI_TYPE_DUP_FN
181 memcpy(value_out, it.second, sizeof(int));
183 } else { // not null, nor dup
184 elem.copy_fn.type_copy_fn_fort(datatype, it.first, elem.extra_state, it.second, value_out, &flag, &ret);
185 if (ret != MPI_SUCCESS)
189 if (ret != MPI_SUCCESS) {
194 attributes().emplace(it.first, value_out);
198 set_contents(MPI_COMBINER_DUP, 0, nullptr, 0, nullptr, 1, &datatype);
202 int Datatype::clone(MPI_Datatype* type){
204 *type = new Datatype(this, &ret);
214 MC_ignore(&refcount_, sizeof refcount_);
218 void Datatype::unref(MPI_Datatype datatype)
220 if (datatype->refcount_ > 0)
221 datatype->refcount_--;
225 MC_ignore(&datatype->refcount_, sizeof datatype->refcount_);
228 if (datatype->refcount_ == 0 && not(datatype->flags_ & DT_FLAG_PREDEFINED))
232 void Datatype::commit()
234 flags_ |= DT_FLAG_COMMITED;
237 bool Datatype::is_valid() const
239 return (flags_ & DT_FLAG_COMMITED);
242 bool Datatype::is_basic() const
244 return (flags_ & DT_FLAG_BASIC);
247 bool Datatype::is_replayable() const
249 return (simgrid::instr::trace_format == simgrid::instr::TraceFormat::Ti) &&
250 ((this == MPI_BYTE) || (this == MPI_DOUBLE) || (this == MPI_INT) || (this == MPI_CHAR) ||
251 (this == MPI_SHORT) || (this == MPI_LONG) || (this == MPI_FLOAT));
254 MPI_Datatype Datatype::decode(const std::string& datatype_id)
256 return id2type_lookup.find(datatype_id)->second;
259 void Datatype::addflag(int flag){
263 int Datatype::extent(MPI_Aint* lb, MPI_Aint* extent) const
270 void Datatype::get_name(char* name, int* length) const
272 *length = static_cast<int>(name_.length());
273 if (not name_.empty()) {
274 name_.copy(name, *length);
275 name[*length] = '\0';
279 void Datatype::set_name(const char* name)
284 int Datatype::pack(const void* inbuf, int incount, void* outbuf, int outcount, int* position, const Comm*)
286 if (outcount - *position < incount*static_cast<int>(size_))
287 return MPI_ERR_OTHER;
288 Datatype::copy(inbuf, incount, this, static_cast<char*>(outbuf) + *position, outcount, MPI_CHAR);
289 *position += incount * size_;
293 int Datatype::unpack(const void* inbuf, int insize, int* position, void* outbuf, int outcount, const Comm*)
295 if (outcount*static_cast<int>(size_)> insize)
296 return MPI_ERR_OTHER;
297 Datatype::copy(static_cast<const char*>(inbuf) + *position, insize, MPI_CHAR, outbuf, outcount, this);
298 *position += outcount * size_;
302 int Datatype::get_contents(int max_integers, int max_addresses, int max_datatypes, int* array_of_integers,
303 MPI_Aint* array_of_addresses, MPI_Datatype* array_of_datatypes) const
305 if(contents_==nullptr)
307 if (static_cast<unsigned>(max_integers) < contents_->integers_.size())
308 return MPI_ERR_COUNT;
309 std::copy(begin(contents_->integers_), end(contents_->integers_), array_of_integers);
310 if (static_cast<unsigned>(max_addresses) < contents_->addresses_.size())
311 return MPI_ERR_COUNT;
312 std::copy(begin(contents_->addresses_), end(contents_->addresses_), array_of_addresses);
313 if (static_cast<unsigned>(max_datatypes) < contents_->datatypes_.size())
314 return MPI_ERR_COUNT;
315 std::copy(begin(contents_->datatypes_), end(contents_->datatypes_), array_of_datatypes);
316 std::for_each(begin(contents_->datatypes_), end(contents_->datatypes_), std::mem_fn(&Datatype::ref));
320 int Datatype::get_envelope(int* num_integers, int* num_addresses, int* num_datatypes, int* combiner) const
322 if(contents_==nullptr){
326 *combiner = MPI_COMBINER_NAMED;
328 *num_integers = contents_->integers_.size();
329 *num_addresses = contents_->addresses_.size();
330 *num_datatypes = contents_->datatypes_.size();
331 *combiner = contents_->combiner_;
336 int Datatype::copy(const void* sendbuf, int sendcount, MPI_Datatype sendtype, void* recvbuf, int recvcount,
337 MPI_Datatype recvtype)
339 // FIXME Handle the case of a partial shared malloc.
341 if (smpi_cfg_privatization() == SmpiPrivStrategies::MMAP) {
342 smpi_switch_data_segment(simgrid::s4u::Actor::self());
344 /* First check if we really have something to do */
346 std::vector<std::pair<size_t, size_t>> private_blocks;
347 if(smpi_is_shared(sendbuf,private_blocks,&offset)
348 && (private_blocks.size()==1
349 && (private_blocks[0].second - private_blocks[0].first)==(unsigned long)(sendcount * sendtype->get_extent()))){
350 XBT_VERB("sendbuf is shared. Ignoring copies");
353 if(smpi_is_shared(recvbuf,private_blocks,&offset)
354 && (private_blocks.size()==1
355 && (private_blocks[0].second - private_blocks[0].first)==(unsigned long)(recvcount * recvtype->get_extent()))){
356 XBT_VERB("recvbuf is shared. Ignoring copies");
360 if (recvcount > 0 && recvbuf != sendbuf) {
361 sendcount *= sendtype->size();
362 recvcount *= recvtype->size();
363 int count = sendcount < recvcount ? sendcount : recvcount;
364 XBT_DEBUG("Copying %d bytes from %p to %p", count, sendbuf, recvbuf);
365 if (not(sendtype->flags() & DT_FLAG_DERIVED) && not(recvtype->flags() & DT_FLAG_DERIVED)) {
366 if (not smpi_process()->replaying() && count > 0)
367 memcpy(recvbuf, sendbuf, count);
368 } else if (not(sendtype->flags() & DT_FLAG_DERIVED)) {
369 recvtype->unserialize(sendbuf, recvbuf, count / recvtype->size(), MPI_REPLACE);
370 } else if (not(recvtype->flags() & DT_FLAG_DERIVED)) {
371 sendtype->serialize(sendbuf, recvbuf, count / sendtype->size());
373 void * buf_tmp = xbt_malloc(count);
375 sendtype->serialize( sendbuf, buf_tmp,count/sendtype->size());
376 recvtype->unserialize( buf_tmp, recvbuf,count/recvtype->size(), MPI_REPLACE);
382 return sendcount > recvcount ? MPI_ERR_TRUNCATE : MPI_SUCCESS;
385 //Default serialization method : memcpy.
386 void Datatype::serialize(const void* noncontiguous_buf, void* contiguous_buf, int count)
388 auto* contiguous_buf_char = static_cast<char*>(contiguous_buf);
389 const auto* noncontiguous_buf_char = static_cast<const char*>(noncontiguous_buf) + lb_;
390 memcpy(contiguous_buf_char, noncontiguous_buf_char, count*size_);
393 void Datatype::unserialize(const void* contiguous_buf, void *noncontiguous_buf, int count, MPI_Op op){
394 const auto* contiguous_buf_char = static_cast<const char*>(contiguous_buf);
395 auto* noncontiguous_buf_char = static_cast<char*>(noncontiguous_buf) + lb_;
398 op->apply( contiguous_buf_char, noncontiguous_buf_char, &n, this);
401 int Datatype::create_contiguous(int count, MPI_Datatype old_type, MPI_Aint lb, MPI_Datatype* new_type){
402 if(old_type->flags_ & DT_FLAG_DERIVED){
403 //handle this case as a hvector with stride equals to the extent of the datatype
404 return create_hvector(count, 1, old_type->get_extent(), old_type, new_type);
407 *new_type = new Type_Contiguous(count * old_type->size(), lb, lb + count * old_type->size(),
408 DT_FLAG_DERIVED, count, old_type);
410 *new_type = new Datatype(count * old_type->size(), lb, lb + count * old_type->size(),0);
414 int Datatype::create_vector(int count, int block_length, int stride, MPI_Datatype old_type, MPI_Datatype* new_type)
423 ub=((count-1)*stride+block_length-1)*old_type->get_extent()+old_type->ub();
425 if(old_type->flags() & DT_FLAG_DERIVED || stride != block_length){
426 *new_type = new Type_Vector(count * block_length * old_type->size(), lb, ub, DT_FLAG_DERIVED, count, block_length,
430 /* in this situation the data are contiguous thus it's not required to serialize and unserialize it*/
431 *new_type = new Datatype(count * block_length * old_type->size(), 0, ((count -1) * stride + block_length)*
432 old_type->size(), DT_FLAG_CONTIGUOUS);
433 const std::array<int, 3> ints = {{count, block_length, stride}};
434 (*new_type)->set_contents(MPI_COMBINER_VECTOR, 3, ints.data(), 0, nullptr, 1, &old_type);
441 int Datatype::create_hvector(int count, int block_length, MPI_Aint stride, MPI_Datatype old_type, MPI_Datatype* new_type)
450 ub=((count-1)*stride)+(block_length-1)*old_type->get_extent()+old_type->ub();
452 if(old_type->flags() & DT_FLAG_DERIVED || stride != block_length*old_type->get_extent()){
453 *new_type = new Type_Hvector(count * block_length * old_type->size(), lb, ub, DT_FLAG_DERIVED, count, block_length,
457 /* in this situation the data are contiguous thus it's not required to serialize and unserialize it*/
458 *new_type = new Datatype(count * block_length * old_type->size(), 0, count * block_length * old_type->size(), DT_FLAG_CONTIGUOUS);
459 const std::array<int, 2> ints = {{count, block_length}};
460 (*new_type)->set_contents(MPI_COMBINER_HVECTOR, 2, ints.data(), 1, &stride, 1, &old_type);
466 int Datatype::create_indexed(int count, const int* block_lengths, const int* indices, MPI_Datatype old_type, MPI_Datatype* new_type){
468 bool contiguous=true;
472 lb=indices[0]*old_type->get_extent();
473 ub=indices[0]*old_type->get_extent() + block_lengths[0]*old_type->ub();
476 for (int i = 0; i < count; i++) {
477 if (block_lengths[i] < 0)
479 size += block_lengths[i];
481 if(indices[i]*old_type->get_extent()+old_type->lb()<lb)
482 lb = indices[i]*old_type->get_extent()+old_type->lb();
483 if(indices[i]*old_type->get_extent()+block_lengths[i]*old_type->ub()>ub)
484 ub = indices[i]*old_type->get_extent()+block_lengths[i]*old_type->ub();
486 if ( (i< count -1) && (indices[i]+block_lengths[i] != indices[i+1]) )
489 if(old_type->flags_ & DT_FLAG_DERIVED)
492 if (not contiguous) {
493 *new_type = new Type_Indexed(size * old_type->size(),lb,ub,
494 DT_FLAG_DERIVED|DT_FLAG_DATA, count, block_lengths, indices, old_type);
496 Datatype::create_contiguous(size, old_type, lb, new_type);
501 int Datatype::create_hindexed(int count, const int* block_lengths, const MPI_Aint* indices, MPI_Datatype old_type, MPI_Datatype* new_type){
503 bool contiguous=true;
507 lb=indices[0] + old_type->lb();
508 ub=indices[0] + block_lengths[0]*old_type->ub();
510 for (int i = 0; i < count; i++) {
511 if (block_lengths[i] < 0)
513 size += block_lengths[i];
515 if(indices[i]+old_type->lb()<lb)
516 lb = indices[i]+old_type->lb();
517 if(indices[i]+block_lengths[i]*old_type->ub()>ub)
518 ub = indices[i]+block_lengths[i]*old_type->ub();
520 if ( (i< count -1) && (indices[i]+block_lengths[i]*(static_cast<int>(old_type->size())) != indices[i+1]) )
523 if (old_type->flags_ & DT_FLAG_DERIVED || lb!=0)
526 if (not contiguous) {
527 *new_type = new Type_Hindexed(size * old_type->size(),lb,ub,
528 DT_FLAG_DERIVED|DT_FLAG_DATA, count, block_lengths, indices, old_type);
530 Datatype::create_contiguous(size, old_type, lb, new_type);
535 int Datatype::create_struct(int count, const int* block_lengths, const MPI_Aint* indices, const MPI_Datatype* old_types, MPI_Datatype* new_type){
537 bool contiguous=true;
542 lb=indices[0] + old_types[0]->lb();
543 ub=indices[0] + block_lengths[0]*old_types[0]->ub();
545 bool forced_lb=false;
546 bool forced_ub=false;
547 for (int i = 0; i < count; i++) {
548 if (block_lengths[i]<0)
550 if (old_types[i]->flags_ & DT_FLAG_DERIVED)
553 size += block_lengths[i]*old_types[i]->size();
554 if (old_types[i]==MPI_LB){
558 if (old_types[i]==MPI_UB){
563 if (not forced_lb && indices[i] + old_types[i]->lb() < lb)
565 if (not forced_ub && indices[i] + block_lengths[i] * old_types[i]->ub() > ub)
566 ub = indices[i]+block_lengths[i]*old_types[i]->ub();
568 if ( (i< count -1) && (indices[i]+block_lengths[i]*static_cast<int>(old_types[i]->size()) != indices[i+1]) )
571 if (not contiguous) {
572 *new_type = new Type_Struct(size, lb,ub, DT_FLAG_DERIVED|DT_FLAG_DATA,
573 count, block_lengths, indices, old_types);
575 Datatype::create_contiguous(size, MPI_CHAR, lb, new_type);
580 int Datatype::create_subarray(int ndims, const int* array_of_sizes,
581 const int* array_of_subsizes, const int* array_of_starts,
582 int order, MPI_Datatype oldtype, MPI_Datatype *newtype){
585 for (int i = 0; i < ndims; i++) {
586 if (array_of_subsizes[i] > array_of_sizes[i]){
587 XBT_WARN("subarray : array_of_subsizes > array_of_sizes for dim %d",i);
590 if (array_of_starts[i] + array_of_subsizes[i] > array_of_sizes[i]){
591 XBT_WARN("subarray : array_of_starts + array_of_subsizes > array_of_sizes for dim %d",i);
596 MPI_Aint extent = oldtype->get_extent();
601 if( order==MPI_ORDER_C ) {
611 MPI_Aint size = (MPI_Aint)array_of_sizes[i] * (MPI_Aint)array_of_sizes[i+step];
612 MPI_Aint lb = (MPI_Aint)array_of_starts[i] + (MPI_Aint)array_of_starts[i+step] *(MPI_Aint)array_of_sizes[i];
614 create_vector( array_of_subsizes[i+step], array_of_subsizes[i], array_of_sizes[i],
619 for( i += 2 * step; i != end; i += step ) {
620 create_hvector( array_of_subsizes[i], 1, size * extent,
623 lb += size * array_of_starts[i];
624 size *= array_of_sizes[i];
628 const MPI_Aint lbs = lb * extent;
630 //handle LB and UB with a resized call
631 create_hindexed(1, &sizes, &lbs, tmp, newtype);
635 create_resized(tmp, 0, extent, newtype);
641 int Datatype::create_resized(MPI_Datatype oldtype,MPI_Aint lb, MPI_Aint extent, MPI_Datatype *newtype){
642 const std::array<int, 3> blocks = {{1, 1, 1}};
643 const std::array<MPI_Aint, 3> disps = {{lb, 0, lb + extent}};
644 const std::array<MPI_Datatype, 3> types = {{MPI_LB, oldtype, MPI_UB}};
646 *newtype = new simgrid::smpi::Type_Struct(oldtype->size(), lb, lb + extent, DT_FLAG_DERIVED, 3, blocks.data(),
647 disps.data(), types.data());
649 (*newtype)->addflag(~DT_FLAG_COMMITED);
653 Datatype* Datatype::f2c(int id)
655 return static_cast<Datatype*>(F2C::f2c(id));
659 } // namespace simgrid