1 /* smpi_datatype.cpp -- MPI primitives to handle datatypes */
2 /* Copyright (c) 2009-2015. The SimGrid Team.
3 * All rights reserved. */
5 /* This program is free software; you can redistribute it and/or modify it
6 * under the terms of the license (GNU LGPL) which comes with this package. */
10 #include "simgrid/modelchecker.h"
16 #include <unordered_map>
19 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(smpi_datatype, smpi, "Logging specific to SMPI (datatype)");
21 #define CREATE_MPI_DATATYPE(name, type) \
22 static Datatype mpi_##name ( \
24 sizeof(type), /* size */ \
26 sizeof(type), /* ub = lb + size */ \
27 DT_FLAG_BASIC /* flags */ \
29 const MPI_Datatype name = &mpi_##name;
31 #define CREATE_MPI_DATATYPE_NULL(name) \
32 static Datatype mpi_##name ( \
36 0, /* ub = lb + size */ \
37 DT_FLAG_BASIC /* flags */ \
39 const MPI_Datatype name = &mpi_##name;
41 // Predefined data types
42 CREATE_MPI_DATATYPE(MPI_CHAR, char);
43 CREATE_MPI_DATATYPE(MPI_SHORT, short);
44 CREATE_MPI_DATATYPE(MPI_INT, int);
45 CREATE_MPI_DATATYPE(MPI_LONG, long);
46 CREATE_MPI_DATATYPE(MPI_LONG_LONG, long long);
47 CREATE_MPI_DATATYPE(MPI_SIGNED_CHAR, signed char);
48 CREATE_MPI_DATATYPE(MPI_UNSIGNED_CHAR, unsigned char);
49 CREATE_MPI_DATATYPE(MPI_UNSIGNED_SHORT, unsigned short);
50 CREATE_MPI_DATATYPE(MPI_UNSIGNED, unsigned int);
51 CREATE_MPI_DATATYPE(MPI_UNSIGNED_LONG, unsigned long);
52 CREATE_MPI_DATATYPE(MPI_UNSIGNED_LONG_LONG, unsigned long long);
53 CREATE_MPI_DATATYPE(MPI_FLOAT, float);
54 CREATE_MPI_DATATYPE(MPI_DOUBLE, double);
55 CREATE_MPI_DATATYPE(MPI_LONG_DOUBLE, long double);
56 CREATE_MPI_DATATYPE(MPI_WCHAR, wchar_t);
57 CREATE_MPI_DATATYPE(MPI_C_BOOL, bool);
58 CREATE_MPI_DATATYPE(MPI_BYTE, int8_t);
59 CREATE_MPI_DATATYPE(MPI_INT8_T, int8_t);
60 CREATE_MPI_DATATYPE(MPI_INT16_T, int16_t);
61 CREATE_MPI_DATATYPE(MPI_INT32_T, int32_t);
62 CREATE_MPI_DATATYPE(MPI_INT64_T, int64_t);
63 CREATE_MPI_DATATYPE(MPI_UINT8_T, uint8_t);
64 CREATE_MPI_DATATYPE(MPI_UINT16_T, uint16_t);
65 CREATE_MPI_DATATYPE(MPI_UINT32_T, uint32_t);
66 CREATE_MPI_DATATYPE(MPI_UINT64_T, uint64_t);
67 CREATE_MPI_DATATYPE(MPI_C_FLOAT_COMPLEX, float _Complex);
68 CREATE_MPI_DATATYPE(MPI_C_DOUBLE_COMPLEX, double _Complex);
69 CREATE_MPI_DATATYPE(MPI_C_LONG_DOUBLE_COMPLEX, long double _Complex);
70 CREATE_MPI_DATATYPE(MPI_AINT, MPI_Aint);
71 CREATE_MPI_DATATYPE(MPI_OFFSET, MPI_Offset);
73 CREATE_MPI_DATATYPE(MPI_FLOAT_INT, float_int);
74 CREATE_MPI_DATATYPE(MPI_LONG_INT, long_int);
75 CREATE_MPI_DATATYPE(MPI_DOUBLE_INT, double_int);
76 CREATE_MPI_DATATYPE(MPI_SHORT_INT, short_int);
77 CREATE_MPI_DATATYPE(MPI_2INT, int_int);
78 CREATE_MPI_DATATYPE(MPI_2FLOAT, float_float);
79 CREATE_MPI_DATATYPE(MPI_2DOUBLE, double_double);
80 CREATE_MPI_DATATYPE(MPI_2LONG, long_long);
82 CREATE_MPI_DATATYPE(MPI_REAL, float);
83 CREATE_MPI_DATATYPE(MPI_REAL4, float);
84 CREATE_MPI_DATATYPE(MPI_REAL8, float);
85 CREATE_MPI_DATATYPE(MPI_REAL16, double);
86 CREATE_MPI_DATATYPE_NULL(MPI_COMPLEX8);
87 CREATE_MPI_DATATYPE_NULL(MPI_COMPLEX16);
88 CREATE_MPI_DATATYPE_NULL(MPI_COMPLEX32);
89 CREATE_MPI_DATATYPE(MPI_INTEGER1, int);
90 CREATE_MPI_DATATYPE(MPI_INTEGER2, int16_t);
91 CREATE_MPI_DATATYPE(MPI_INTEGER4, int32_t);
92 CREATE_MPI_DATATYPE(MPI_INTEGER8, int64_t);
93 CREATE_MPI_DATATYPE(MPI_INTEGER16, integer128_t);
95 CREATE_MPI_DATATYPE(MPI_LONG_DOUBLE_INT, long_double_int);
97 CREATE_MPI_DATATYPE_NULL(MPI_UB);
98 CREATE_MPI_DATATYPE_NULL(MPI_LB);
99 CREATE_MPI_DATATYPE(MPI_PACKED, char);
101 CREATE_MPI_DATATYPE(MPI_PTR, void*);
106 std::unordered_map<int, smpi_key_elem> Datatype::keyvals_;
107 int Datatype::keyval_id_=0;
109 Datatype::Datatype(int size,MPI_Aint lb, MPI_Aint ub, int flags) : name_(nullptr), size_(size), lb_(lb), ub_(ub), flags_(flags), refcount_(1){
112 MC_ignore(&(refcount_), sizeof(refcount_));
116 //for predefined types, so in_use = 0.
117 Datatype::Datatype(char* name, int size,MPI_Aint lb, MPI_Aint ub, int flags) : name_(name), size_(size), lb_(lb), ub_(ub), flags_(flags), refcount_(0){
120 MC_ignore(&(refcount_), sizeof(refcount_));
124 Datatype::Datatype(Datatype *datatype, int* ret) : name_(nullptr), lb_(datatype->lb_), ub_(datatype->ub_), flags_(datatype->flags_), refcount_(1)
126 flags_ &= ~DT_FLAG_PREDEFINED;
129 name_ = xbt_strdup(datatype->name_);
130 if(!(datatype->attributes_.empty())){
133 for(auto it = datatype->attributes_.begin(); it != datatype->attributes_.end(); it++){
134 smpi_key_elem elem = keyvals_.at((*it).first);
136 if (elem != nullptr && elem->copy_fn.type_copy_fn != MPI_NULL_COPY_FN) {
137 *ret = elem->copy_fn.type_copy_fn(datatype, (*it).first, nullptr, (*it).second, &value_out, &flag);
138 if (*ret != MPI_SUCCESS) {
143 attributes_.insert({(*it).first, value_out});
150 Datatype::~Datatype(){
151 xbt_assert(refcount_ >= 0);
153 if(flags_ & DT_FLAG_PREDEFINED)
156 //if still used, mark for deletion
158 flags_ |=DT_FLAG_DESTROYED;
162 cleanup_attr<Datatype>();
168 void Datatype::ref(){
174 MC_ignore(&(refcount_), sizeof(refcount_));
178 void Datatype::unref(MPI_Datatype datatype)
180 if (datatype->refcount_ > 0)
181 datatype->refcount_--;
183 if (datatype->refcount_ == 0 && !(datatype->flags_ & DT_FLAG_PREDEFINED))
188 MC_ignore(&(datatype->refcount_), sizeof(datatype->refcount_));
192 void Datatype::commit()
194 flags_ |= DT_FLAG_COMMITED;
198 bool Datatype::is_valid(){
199 return (flags_ & DT_FLAG_COMMITED);
202 size_t Datatype::size(){
206 int Datatype::flags(){
210 void Datatype::addflag(int flag){
214 MPI_Aint Datatype::lb(){
218 MPI_Aint Datatype::ub(){
222 char* Datatype::name(){
227 int Datatype::extent(MPI_Aint * lb, MPI_Aint * extent){
233 MPI_Aint Datatype::get_extent(){
237 void Datatype::get_name(char* name, int* length){
238 *length = strlen(name_);
239 strncpy(name, name_, *length+1);
242 void Datatype::set_name(char* name){
243 if(name_!=nullptr && (flags_ & DT_FLAG_PREDEFINED) == 0)
245 name_ = xbt_strdup(name);
248 int Datatype::pack(void* inbuf, int incount, void* outbuf, int outcount, int* position,MPI_Comm comm){
249 if (outcount - *position < incount*static_cast<int>(size_))
250 return MPI_ERR_BUFFER;
251 Datatype::copy(inbuf, incount, this, static_cast<char*>(outbuf) + *position, outcount, MPI_CHAR);
252 *position += incount * size_;
256 int Datatype::unpack(void* inbuf, int insize, int* position, void* outbuf, int outcount,MPI_Comm comm){
257 if (outcount*(int)size_> insize)
258 return MPI_ERR_BUFFER;
259 Datatype::copy(static_cast<char*>(inbuf) + *position, insize, MPI_CHAR, outbuf, outcount, this);
260 *position += outcount * size_;
265 int Datatype::copy(void *sendbuf, int sendcount, MPI_Datatype sendtype,
266 void *recvbuf, int recvcount, MPI_Datatype recvtype){
268 if(smpi_privatize_global_variables){
269 smpi_switch_data_segment(smpi_process_index());
271 /* First check if we really have something to do */
272 if (recvcount > 0 && recvbuf != sendbuf) {
273 sendcount *= sendtype->size();
274 recvcount *= recvtype->size();
275 count = sendcount < recvcount ? sendcount : recvcount;
277 if(!(sendtype->flags() & DT_FLAG_DERIVED) && !(recvtype->flags() & DT_FLAG_DERIVED)) {
278 if(!smpi_process_get_replaying())
279 memcpy(recvbuf, sendbuf, count);
281 else if (!(sendtype->flags() & DT_FLAG_DERIVED))
283 recvtype->unserialize( sendbuf, recvbuf, recvcount/recvtype->size(), MPI_REPLACE);
285 else if (!(recvtype->flags() & DT_FLAG_DERIVED))
287 sendtype->serialize(sendbuf, recvbuf, sendcount/sendtype->size());
290 void * buf_tmp = xbt_malloc(count);
292 sendtype->serialize( sendbuf, buf_tmp,count/sendtype->size());
293 recvtype->unserialize( buf_tmp, recvbuf,count/recvtype->size(), MPI_REPLACE);
299 return sendcount > recvcount ? MPI_ERR_TRUNCATE : MPI_SUCCESS;
302 //Default serialization method : memcpy.
303 void Datatype::serialize( void* noncontiguous_buf, void *contiguous_buf, int count){
304 char* contiguous_buf_char = static_cast<char*>(contiguous_buf);
305 char* noncontiguous_buf_char = static_cast<char*>(noncontiguous_buf)+lb_;
306 memcpy(contiguous_buf_char, noncontiguous_buf_char, count*size_);
310 void Datatype::unserialize( void* contiguous_buf, void *noncontiguous_buf, int count, MPI_Op op){
311 char* contiguous_buf_char = static_cast<char*>(contiguous_buf);
312 char* noncontiguous_buf_char = static_cast<char*>(noncontiguous_buf)+lb_;
315 op->apply( contiguous_buf_char, noncontiguous_buf_char, &n, this);
318 int Datatype::create_contiguous(int count, MPI_Datatype old_type, MPI_Aint lb, MPI_Datatype* new_type){
319 if(old_type->flags_ & DT_FLAG_DERIVED){
320 //handle this case as a hvector with stride equals to the extent of the datatype
321 return create_hvector(count, 1, old_type->get_extent(), old_type, new_type);
324 *new_type = new Type_Contiguous(count * old_type->size(), lb, lb + count * old_type->size(),
325 DT_FLAG_DERIVED, count, old_type);
327 *new_type = new Datatype(count * old_type->size(), lb, lb + count * old_type->size(),0);
331 int Datatype::create_vector(int count, int block_length, int stride, MPI_Datatype old_type, MPI_Datatype* new_type)
340 ub=((count-1)*stride+block_length-1)*old_type->get_extent()+old_type->ub();
342 if(old_type->flags() & DT_FLAG_DERIVED || stride != block_length){
343 *new_type = new Type_Vector(count * (block_length) * old_type->size(), lb, ub,
344 DT_FLAG_DERIVED, count, block_length, stride, old_type);
347 /* in this situation the data are contiguous thus it's not required to serialize and unserialize it*/
348 *new_type = new Datatype(count * block_length * old_type->size(), 0, ((count -1) * stride + block_length)*
349 old_type->size(), DT_FLAG_CONTIGUOUS);
356 int Datatype::create_hvector(int count, int block_length, MPI_Aint stride, MPI_Datatype old_type, MPI_Datatype* new_type)
365 ub=((count-1)*stride)+(block_length-1)*old_type->get_extent()+old_type->ub();
367 if(old_type->flags() & DT_FLAG_DERIVED || stride != block_length*old_type->get_extent()){
368 *new_type = new Type_Hvector(count * (block_length) * old_type->size(), lb, ub,
369 DT_FLAG_DERIVED, count, block_length, stride, old_type);
372 /* in this situation the data are contiguous thus it's not required to serialize and unserialize it*/
373 *new_type = new Datatype(count * block_length * old_type->size(), 0, count * block_length * old_type->size(), DT_FLAG_CONTIGUOUS);
379 int Datatype::create_indexed(int count, int* block_lengths, int* indices, MPI_Datatype old_type, MPI_Datatype* new_type){
381 bool contiguous=true;
385 lb=indices[0]*old_type->get_extent();
386 ub=indices[0]*old_type->get_extent() + block_lengths[0]*old_type->ub();
389 for (int i = 0; i < count; i++) {
390 if (block_lengths[i] < 0)
392 size += block_lengths[i];
394 if(indices[i]*old_type->get_extent()+old_type->lb()<lb)
395 lb = indices[i]*old_type->get_extent()+old_type->lb();
396 if(indices[i]*old_type->get_extent()+block_lengths[i]*old_type->ub()>ub)
397 ub = indices[i]*old_type->get_extent()+block_lengths[i]*old_type->ub();
399 if ( (i< count -1) && (indices[i]+block_lengths[i] != indices[i+1]) )
402 if(old_type->flags_ & DT_FLAG_DERIVED)
406 *new_type = new Type_Indexed(size * old_type->size(),lb,ub,
407 DT_FLAG_DERIVED|DT_FLAG_DATA, count, block_lengths, indices, old_type);
409 Datatype::create_contiguous(size, old_type, lb, new_type);
414 int Datatype::create_hindexed(int count, int* block_lengths, MPI_Aint* indices, MPI_Datatype old_type, MPI_Datatype* new_type){
416 bool contiguous=true;
420 lb=indices[0] + old_type->lb();
421 ub=indices[0] + block_lengths[0]*old_type->ub();
423 for (int i = 0; i < count; i++) {
424 if (block_lengths[i] < 0)
426 size += block_lengths[i];
428 if(indices[i]+old_type->lb()<lb)
429 lb = indices[i]+old_type->lb();
430 if(indices[i]+block_lengths[i]*old_type->ub()>ub)
431 ub = indices[i]+block_lengths[i]*old_type->ub();
433 if ( (i< count -1) && (indices[i]+block_lengths[i]*(static_cast<int>(old_type->size())) != indices[i+1]) )
436 if (old_type->flags_ & DT_FLAG_DERIVED || lb!=0)
440 *new_type = new Type_Hindexed(size * old_type->size(),lb,ub,
441 DT_FLAG_DERIVED|DT_FLAG_DATA, count, block_lengths, indices, old_type);
443 Datatype::create_contiguous(size, old_type, lb, new_type);
448 int Datatype::create_struct(int count, int* block_lengths, MPI_Aint* indices, MPI_Datatype* old_types, MPI_Datatype* new_type){
450 bool contiguous=true;
455 lb=indices[0] + old_types[0]->lb();
456 ub=indices[0] + block_lengths[0]*old_types[0]->ub();
458 bool forced_lb=false;
459 bool forced_ub=false;
460 for (int i = 0; i < count; i++) {
461 if (block_lengths[i]<0)
463 if (old_types[i]->flags_ & DT_FLAG_DERIVED)
466 size += block_lengths[i]*old_types[i]->size();
467 if (old_types[i]==MPI_LB){
471 if (old_types[i]==MPI_UB){
476 if(!forced_lb && indices[i]+old_types[i]->lb()<lb)
478 if(!forced_ub && indices[i]+block_lengths[i]*old_types[i]->ub()>ub)
479 ub = indices[i]+block_lengths[i]*old_types[i]->ub();
481 if ( (i< count -1) && (indices[i]+block_lengths[i]*static_cast<int>(old_types[i]->size()) != indices[i+1]) )
485 *new_type = new Type_Struct(size, lb,ub, DT_FLAG_DERIVED|DT_FLAG_DATA,
486 count, block_lengths, indices, old_types);
488 Datatype::create_contiguous(size, MPI_CHAR, lb, new_type);
493 Datatype* Datatype::f2c(int id){
494 return static_cast<Datatype*>(F2C::f2c(id));