1 /* Copyright (c) 2010-2022. 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"
17 struct smpi_mpi_generalized_request_funcs_t {
18 MPI_Grequest_query_function *query_fn;
19 MPI_Grequest_free_function *free_fn;
20 MPI_Grequest_cancel_function *cancel_fn;
22 s4u::ConditionVariablePtr cond;
26 class Request : public F2C {
28 /* in the case of non-contiguous memory the user address should be keep
29 * to unserialize the data inside the user memory*/
31 /* this is especially for derived datatypes that we need to serialize/unserialize.
32 * It let us know how to unserialize at the end of the communication */
38 // to handle cases where we have an unknown sender
39 // We can't override src, tag, and size, because the request may be reused later
43 bool unmatched_types_;
46 simgrid::kernel::activity::ActivityImplPtr action_;
49 MPI_Request detached_sender_;
51 unsigned int message_id_;
53 std::unique_ptr<smpi_mpi_generalized_request_funcs_t> generalized_funcs;
54 std::vector<MPI_Request> nbc_requests_;
55 s4u::Host* src_host_ = nullptr; //!< save simgrid's source host since it can finished before the recv
56 static bool match_common(MPI_Request req, MPI_Request sender, MPI_Request receiver);
57 static bool match_types(MPI_Datatype stype, MPI_Datatype rtype);
61 Request(const void* buf, int count, MPI_Datatype datatype, aid_t src, aid_t dst, int tag, MPI_Comm comm,
62 unsigned flags, MPI_Op op = MPI_REPLACE);
63 MPI_Comm comm() const { return comm_; }
64 size_t size() const { return size_; }
65 size_t real_size() const { return real_size_; }
66 aid_t src() const { return src_; }
67 aid_t dst() const { return dst_; }
68 int tag() const { return tag_; }
69 int flags() const { return flags_; }
70 bool detached() const { return detached_; }
71 std::string name() const override { return std::string("MPI_Request"); }
72 MPI_Datatype type() const { return type_; }
73 void print_request(const char* message) const;
76 void init_buffer(int count);
78 void start_nbc_requests(std::vector<MPI_Request> reqs);
79 static int finish_nbc_requests(MPI_Request* req, int test);
80 std::vector<MPI_Request> get_nbc_requests() const;
81 static void finish_wait(MPI_Request* request, MPI_Status* status);
82 static void unref(MPI_Request* request);
83 static int wait(MPI_Request* req, MPI_Status* status);
84 static MPI_Request bsend_init(const void* buf, int count, MPI_Datatype datatype, int dst, int tag, MPI_Comm comm);
85 static MPI_Request send_init(const void* buf, int count, MPI_Datatype datatype, int dst, int tag, MPI_Comm comm);
86 static MPI_Request isend_init(const void* buf, int count, MPI_Datatype datatype, int dst, int tag, MPI_Comm comm);
87 static MPI_Request ssend_init(const void* buf, int count, MPI_Datatype datatype, int dst, int tag, MPI_Comm comm);
88 static MPI_Request rma_send_init(const void* buf, int count, MPI_Datatype datatype, int src, int dst, int tag,
89 MPI_Comm comm, MPI_Op op);
90 static MPI_Request recv_init(void* buf, int count, MPI_Datatype datatype, int src, int tag, MPI_Comm comm);
91 static MPI_Request rma_recv_init(void* buf, int count, MPI_Datatype datatype, int src, int dst, int tag,
92 MPI_Comm comm, MPI_Op op);
93 static MPI_Request irecv_init(void* buf, int count, MPI_Datatype datatype, int src, int tag, MPI_Comm comm);
94 static MPI_Request ibsend(const void* buf, int count, MPI_Datatype datatype, int dst, int tag, MPI_Comm comm);
95 static MPI_Request isend(const void* buf, int count, MPI_Datatype datatype, int dst, int tag, MPI_Comm comm);
96 static MPI_Request issend(const void* buf, int count, MPI_Datatype datatype, int dst, int tag, MPI_Comm comm);
97 static MPI_Request irecv(void* buf, int count, MPI_Datatype datatype, int src, int tag, MPI_Comm comm);
99 static int recv(void* buf, int count, MPI_Datatype datatype, int src, int tag, MPI_Comm comm, MPI_Status* status);
100 static void bsend(const void* buf, int count, MPI_Datatype datatype, int dst, int tag, MPI_Comm comm);
101 static void send(const void* buf, int count, MPI_Datatype datatype, int dst, int tag, MPI_Comm comm);
102 static void ssend(const void* buf, int count, MPI_Datatype datatype, int dst, int tag, MPI_Comm comm);
104 static void sendrecv(const void* sendbuf, int sendcount, MPI_Datatype sendtype, int dst, int sendtag, void* recvbuf,
105 int recvcount, MPI_Datatype recvtype, int src, int recvtag, MPI_Comm comm, MPI_Status* status);
107 static void startall(int count, MPI_Request* requests);
109 static int test(MPI_Request* request, MPI_Status* status, int* flag);
110 static int testsome(int incount, MPI_Request requests[], int* outcounts, int* indices, MPI_Status status[]);
111 static int testany(int count, MPI_Request requests[], int* index, int* flag, MPI_Status* status);
112 static int testall(int count, MPI_Request requests[], int* flag, MPI_Status status[]);
114 static void probe(int source, int tag, MPI_Comm comm, MPI_Status* status);
115 static void iprobe(int source, int tag, MPI_Comm comm, int* flag, MPI_Status* status);
117 static int waitany(int count, MPI_Request requests[], MPI_Status* status);
118 static int waitall(int count, MPI_Request requests[], MPI_Status status[]);
119 static int waitsome(int incount, MPI_Request requests[], int* indices, MPI_Status status[]);
121 static bool match_send(void* a, void* b, kernel::activity::CommImpl* ignored);
122 static bool match_recv(void* a, void* b, kernel::activity::CommImpl* ignored);
124 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);
125 static int grequest_complete( MPI_Request request);
126 static int get_status(const Request* req, int* flag, MPI_Status* status);
128 static void free_f(int id);
129 static Request* f2c(int);