1 /* Copyright (c) 2010-2021. 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 */
33 MPI_Datatype old_type_;
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
45 simgrid::kernel::activity::ActivityImplPtr action_;
48 MPI_Request detached_sender_;
51 int cancelled_; // tri-state
52 std::unique_ptr<smpi_mpi_generalized_request_funcs_t> generalized_funcs;
53 MPI_Request* nbc_requests_;
54 int nbc_requests_size_;
55 static bool match_common(MPI_Request req, MPI_Request sender, MPI_Request receiver);
59 Request(const void* buf, int count, MPI_Datatype datatype, int src, int dst, int tag, MPI_Comm comm, unsigned flags, MPI_Op op = MPI_REPLACE);
60 MPI_Comm comm() const { return comm_; }
61 size_t size() const { return size_; }
62 size_t real_size() const { return real_size_; }
63 int src() const { return src_; }
64 int dst() const { return dst_; }
65 int tag() const { return tag_; }
66 int flags() const { return flags_; }
67 bool detached() const { return detached_; }
68 MPI_Datatype type() const { return old_type_; }
69 void print_request(const char* message) const;
72 void init_buffer(int count);
74 void set_nbc_requests(MPI_Request* reqs, int size);
75 int get_nbc_requests_size() const;
76 MPI_Request* get_nbc_requests() const;
77 static void finish_wait(MPI_Request* request, MPI_Status* status);
78 static void unref(MPI_Request* request);
79 static int wait(MPI_Request* req, MPI_Status* status);
80 static MPI_Request bsend_init(const void* buf, int count, MPI_Datatype datatype, int dst, int tag, MPI_Comm comm);
81 static MPI_Request send_init(const void* buf, int count, MPI_Datatype datatype, int dst, int tag, MPI_Comm comm);
82 static MPI_Request isend_init(const void* buf, int count, MPI_Datatype datatype, int dst, int tag, MPI_Comm comm);
83 static MPI_Request ssend_init(const void* buf, int count, MPI_Datatype datatype, int dst, int tag, MPI_Comm comm);
84 static MPI_Request rma_send_init(const void* buf, int count, MPI_Datatype datatype, int src, int dst, int tag,
85 MPI_Comm comm, MPI_Op op);
86 static MPI_Request recv_init(void* buf, int count, MPI_Datatype datatype, int src, int tag, MPI_Comm comm);
87 static MPI_Request rma_recv_init(void* buf, int count, MPI_Datatype datatype, int src, int dst, int tag,
88 MPI_Comm comm, MPI_Op op);
89 static MPI_Request irecv_init(void* buf, int count, MPI_Datatype datatype, int src, int tag, MPI_Comm comm);
90 static MPI_Request ibsend(const void* buf, int count, MPI_Datatype datatype, int dst, int tag, MPI_Comm comm);
91 static MPI_Request isend(const void* buf, int count, MPI_Datatype datatype, int dst, int tag, MPI_Comm comm);
92 static MPI_Request issend(const void* buf, int count, MPI_Datatype datatype, int dst, int tag, MPI_Comm comm);
93 static MPI_Request irecv(void* buf, int count, MPI_Datatype datatype, int src, int tag, MPI_Comm comm);
95 static void recv(void* buf, int count, MPI_Datatype datatype, int src, int tag, MPI_Comm comm, MPI_Status* status);
96 static void bsend(const void* buf, int count, MPI_Datatype datatype, int dst, int tag, MPI_Comm comm);
97 static void send(const void* buf, int count, MPI_Datatype datatype, int dst, int tag, MPI_Comm comm);
98 static void ssend(const void* buf, int count, MPI_Datatype datatype, int dst, int tag, MPI_Comm comm);
100 static void sendrecv(const void* sendbuf, int sendcount, MPI_Datatype sendtype, int dst, int sendtag, void* recvbuf,
101 int recvcount, MPI_Datatype recvtype, int src, int recvtag, MPI_Comm comm, MPI_Status* status);
103 static void startall(int count, MPI_Request* requests);
105 static int test(MPI_Request* request, MPI_Status* status, int* flag);
106 static int testsome(int incount, MPI_Request requests[], int* outcounts, int* indices, MPI_Status status[]);
107 static int testany(int count, MPI_Request requests[], int* index, int* flag, MPI_Status* status);
108 static int testall(int count, MPI_Request requests[], int* flag, MPI_Status status[]);
110 static void probe(int source, int tag, MPI_Comm comm, MPI_Status* status);
111 static void iprobe(int source, int tag, MPI_Comm comm, int* flag, MPI_Status* status);
113 static int waitany(int count, MPI_Request requests[], MPI_Status* status);
114 static int waitall(int count, MPI_Request requests[], MPI_Status status[]);
115 static int waitsome(int incount, MPI_Request requests[], int* indices, MPI_Status status[]);
117 static bool match_send(void* a, void* b, kernel::activity::CommImpl* ignored);
118 static bool match_recv(void* a, void* b, kernel::activity::CommImpl* ignored);
120 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);
121 static int grequest_complete( MPI_Request request);
122 static int get_status(const Request* req, int* flag, MPI_Status* status);
124 static void free_f(int id);
125 static Request* f2c(int);