1 /* Copyright (c) 2010-2023. 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_REQUEST_HPP_INCLUDED
7 #define SMPI_REQUEST_HPP_INCLUDED
10 #include "smpi_f2c.hpp"
14 namespace simgrid::smpi {
16 struct smpi_mpi_generalized_request_funcs_t {
17 MPI_Grequest_query_function *query_fn;
18 MPI_Grequest_free_function *free_fn;
19 MPI_Grequest_cancel_function *cancel_fn;
21 s4u::ConditionVariablePtr cond;
25 class Request : public F2C {
27 /* in the case of non-contiguous memory the user address should be keep
28 * to unserialize the data inside the user memory*/
30 /* this is especially for derived datatypes that we need to serialize/unserialize.
31 * It let us know how to unserialize at the end of the communication */
37 // to handle cases where we have an unknown sender
38 // We can't override src, tag, and size, because the request may be reused later
42 bool unmatched_types_;
45 simgrid::kernel::activity::ActivityImplPtr action_;
48 MPI_Request detached_sender_;
50 unsigned int message_id_;
52 std::unique_ptr<smpi_mpi_generalized_request_funcs_t> generalized_funcs;
53 std::vector<MPI_Request> nbc_requests_;
54 s4u::Host* src_host_ = nullptr; //!< save SimGrid's source host since it can finished before the recv
55 static bool match_common(MPI_Request req, MPI_Request sender, MPI_Request receiver);
56 static bool match_types(MPI_Datatype stype, MPI_Datatype rtype);
60 Request(const void* buf, int count, MPI_Datatype datatype, aid_t src, aid_t dst, int tag, MPI_Comm comm,
61 unsigned flags, MPI_Op op = MPI_REPLACE);
62 MPI_Comm comm() const { return comm_; }
63 size_t size() const { return size_; }
64 size_t real_size() const { return real_size_; }
65 aid_t src() const { return src_; }
66 aid_t dst() const { return dst_; }
67 int tag() const { return tag_; }
68 int flags() const { return flags_; }
69 bool detached() const { return detached_; }
70 std::string name() const override { return "MPI_Request"; }
71 MPI_Datatype type() const { return type_; }
72 void print_request(const char* message) const;
75 void init_buffer(int count);
77 void start_nbc_requests(std::vector<MPI_Request> reqs);
78 static int finish_nbc_requests(MPI_Request* req, int test);
79 std::vector<MPI_Request> get_nbc_requests() const;
80 static void finish_wait(MPI_Request* request, MPI_Status* status);
81 static void unref(MPI_Request* request);
82 static int wait(MPI_Request* req, MPI_Status* status);
83 static MPI_Request bsend_init(const void* buf, int count, MPI_Datatype datatype, int dst, int tag, MPI_Comm comm);
84 static MPI_Request send_init(const void* buf, int count, MPI_Datatype datatype, int dst, int tag, MPI_Comm comm);
85 static MPI_Request isend_init(const void* buf, int count, MPI_Datatype datatype, int dst, int tag, MPI_Comm comm);
86 static MPI_Request ssend_init(const void* buf, int count, MPI_Datatype datatype, int dst, int tag, MPI_Comm comm);
87 static MPI_Request rma_send_init(const void* buf, int count, MPI_Datatype datatype, int src, int dst, int tag,
88 MPI_Comm comm, MPI_Op op);
89 static MPI_Request recv_init(void* buf, int count, MPI_Datatype datatype, int src, int tag, MPI_Comm comm);
90 static MPI_Request rma_recv_init(void* buf, int count, MPI_Datatype datatype, int src, int dst, int tag,
91 MPI_Comm comm, MPI_Op op);
92 static MPI_Request irecv_init(void* buf, int count, MPI_Datatype datatype, int src, int tag, MPI_Comm comm);
93 static MPI_Request ibsend(const void* buf, int count, MPI_Datatype datatype, int dst, int tag, MPI_Comm comm);
94 static MPI_Request isend(const void* buf, int count, MPI_Datatype datatype, int dst, int tag, MPI_Comm comm);
95 static MPI_Request issend(const void* buf, int count, MPI_Datatype datatype, int dst, int tag, MPI_Comm comm);
96 static MPI_Request irecv(void* buf, int count, MPI_Datatype datatype, int src, int tag, MPI_Comm comm);
98 static int recv(void* buf, int count, MPI_Datatype datatype, int src, int tag, MPI_Comm comm, MPI_Status* status);
99 static void bsend(const void* buf, int count, MPI_Datatype datatype, int dst, int tag, MPI_Comm comm);
100 static void send(const void* buf, int count, MPI_Datatype datatype, int dst, int tag, MPI_Comm comm);
101 static void ssend(const void* buf, int count, MPI_Datatype datatype, int dst, int tag, MPI_Comm comm);
103 static void sendrecv(const void* sendbuf, int sendcount, MPI_Datatype sendtype, int dst, int sendtag, void* recvbuf,
104 int recvcount, MPI_Datatype recvtype, int src, int recvtag, MPI_Comm comm, MPI_Status* status);
106 static void startall(int count, MPI_Request* requests);
108 static int test(MPI_Request* request, MPI_Status* status, int* flag);
109 static int testsome(int incount, MPI_Request requests[], int* outcounts, int* indices, MPI_Status status[]);
110 static int testany(int count, MPI_Request requests[], int* index, int* flag, MPI_Status* status);
111 static int testall(int count, MPI_Request requests[], int* flag, MPI_Status status[]);
113 static void probe(int source, int tag, MPI_Comm comm, MPI_Status* status);
114 static void iprobe(int source, int tag, MPI_Comm comm, int* flag, MPI_Status* status);
116 static int waitany(int count, MPI_Request requests[], MPI_Status* status);
117 static int waitall(int count, MPI_Request requests[], MPI_Status status[]);
118 static int waitsome(int incount, MPI_Request requests[], int* indices, MPI_Status status[]);
120 static bool match_send(void* a, void* b, kernel::activity::CommImpl* ignored);
121 static bool match_recv(void* a, void* b, kernel::activity::CommImpl* ignored);
123 static int grequest_start( MPI_Grequest_query_function *query_fn, MPI_Grequest_free_function *free_fn, MPI_Grequest_cancel_function *cancel_fn, void *extra_state, MPI_Request *request);
124 static int grequest_complete( MPI_Request request);
125 static int get_status(const Request* req, int* flag, MPI_Status* status);
127 static void free_f(int id);
128 static Request* f2c(int);
131 } // namespace simgrid::smpi