1 /* Copyright (c) 2009-2018. The SimGrid Team. All rights reserved. */
3 /* This program is free software; you can redistribute it and/or modify it
4 * under the terms of the license (GNU LGPL) which comes with this package. */
6 #ifndef SMPI_DATATYPE_HPP
7 #define SMPI_DATATYPE_HPP
9 #include "smpi_f2c.hpp"
10 #include "smpi_keyvals.hpp"
13 #define DT_FLAG_DESTROYED 0x0001 /**< user destroyed but some other layers still have a reference */
14 #define DT_FLAG_COMMITED 0x0002 /**< ready to be used for a send/recv operation */
15 #define DT_FLAG_CONTIGUOUS 0x0004 /**< contiguous datatype */
16 #define DT_FLAG_OVERLAP 0x0008 /**< datatype is unpropper for a recv operation */
17 #define DT_FLAG_USER_LB 0x0010 /**< has a user defined LB */
18 #define DT_FLAG_USER_UB 0x0020 /**< has a user defined UB */
19 #define DT_FLAG_PREDEFINED 0x0040 /**< cannot be removed: initial and predefined datatypes */
20 #define DT_FLAG_NO_GAPS 0x0080 /**< no gaps around the datatype */
21 #define DT_FLAG_DATA 0x0100 /**< data or control structure */
22 #define DT_FLAG_ONE_SIDED 0x0200 /**< datatype can be used for one sided operations */
23 #define DT_FLAG_UNAVAILABLE 0x0400 /**< datatypes unavailable on the build (OS or compiler dependant) */
24 #define DT_FLAG_DERIVED 0x0800 /**< is the datatype derived ? */
26 * We should make the difference here between the predefined contiguous and non contiguous
27 * datatypes. The DT_FLAG_BASIC is held by all predefined contiguous datatypes.
29 #define DT_FLAG_BASIC (DT_FLAG_PREDEFINED | DT_FLAG_CONTIGUOUS | DT_FLAG_NO_GAPS | DT_FLAG_DATA | DT_FLAG_COMMITED)
31 extern const MPI_Datatype MPI_PTR;
33 //The following are datatypes for the MPI functions MPI_MAXLOC and MPI_MINLOC.
46 struct double_double {
66 struct long_double_int {
78 class Datatype : public F2C, public Keyval{
80 /* The id here is the (unique) datatype id used for this datastructure.
81 * It's default value is set to -1 since some code expects this return value
82 * when no other id has been assigned
84 std::string id = "-1";
92 static std::unordered_map<int, smpi_key_elem> keyvals_;
93 static int keyval_id_;
95 Datatype(int id, int size, MPI_Aint lb, MPI_Aint ub, int flags);
96 Datatype(char* name, int id, int size, MPI_Aint lb, MPI_Aint ub, int flags);
97 Datatype(int size, MPI_Aint lb, MPI_Aint ub, int flags);
98 Datatype(char* name, int size, MPI_Aint lb, MPI_Aint ub, int flags);
99 Datatype(Datatype* datatype, int* ret);
110 static void unref(MPI_Datatype datatype);
114 static const char* encode(MPI_Datatype dt);
115 static MPI_Datatype decode(std::string datatype_id);
116 bool is_replayable();
117 void addflag(int flag);
118 int extent(MPI_Aint* lb, MPI_Aint* extent);
119 MPI_Aint get_extent();
120 void get_name(char* name, int* length);
121 void set_name(char* name);
122 static int copy(void* sendbuf, int sendcount, MPI_Datatype sendtype, void* recvbuf, int recvcount,
123 MPI_Datatype recvtype);
124 virtual void serialize(void* noncontiguous, void* contiguous, int count);
125 virtual void unserialize(void* contiguous, void* noncontiguous, int count, MPI_Op op);
126 static int keyval_create(MPI_Type_copy_attr_function* copy_fn, MPI_Type_delete_attr_function* delete_fn, int* keyval,
128 static int keyval_free(int* keyval);
129 int pack(void* inbuf, int incount, void* outbuf, int outcount, int* position, MPI_Comm comm);
130 int unpack(void* inbuf, int insize, int* position, void* outbuf, int outcount, MPI_Comm comm);
132 static int create_contiguous(int count, MPI_Datatype old_type, MPI_Aint lb, MPI_Datatype* new_type);
133 static int create_vector(int count, int blocklen, int stride, MPI_Datatype old_type, MPI_Datatype* new_type);
134 static int create_hvector(int count, int blocklen, MPI_Aint stride, MPI_Datatype old_type, MPI_Datatype* new_type);
135 static int create_indexed(int count, int* blocklens, int* indices, MPI_Datatype old_type, MPI_Datatype* new_type);
136 static int create_hindexed(int count, int* blocklens, MPI_Aint* indices, MPI_Datatype old_type,
137 MPI_Datatype* new_type);
138 static int create_struct(int count, int* blocklens, MPI_Aint* indices, MPI_Datatype* old_types,
139 MPI_Datatype* new_type);
140 static int create_subarray(int ndims, int* array_of_sizes,
141 int* array_of_subsizes, int* array_of_starts,
142 int order, MPI_Datatype oldtype, MPI_Datatype *newtype);
143 static int create_resized(MPI_Datatype oldtype,MPI_Aint lb, MPI_Aint extent,
144 MPI_Datatype *newtype);
145 static Datatype* f2c(int id);