+class Request : public F2C {
+ void* buf_;
+ /* in the case of non-contiguous memory the user address should be keep
+ * to unserialize the data inside the user memory*/
+ void* old_buf_;
+ /* this is especially for derived datatypes that we need to serialize/unserialize.
+ * It let us know how to unserialize at the end of the communication */
+ MPI_Datatype type_;
+ size_t size_;
+ aid_t src_;
+ aid_t dst_;
+ int tag_;
+ // to handle cases where we have an unknown sender
+ // We can't override src, tag, and size, because the request may be reused later
+ aid_t real_src_;
+ int real_tag_;
+ bool truncated_;
+ bool unmatched_types_;
+ size_t real_size_;
+ MPI_Comm comm_;
+ simgrid::kernel::activity::ActivityImplPtr action_;
+ unsigned flags_;
+ bool detached_;
+ MPI_Request detached_sender_;
+ int refcount_;
+ std::vector<unsigned int> message_id_;
+ MPI_Op op_;
+ std::unique_ptr<smpi_mpi_generalized_request_funcs_t> generalized_funcs;
+ std::vector<MPI_Request> nbc_requests_;
+ s4u::Host* src_host_ = nullptr; //!< save SimGrid's source host since it can finished before the recv
+ static bool match_common(MPI_Request req, MPI_Request sender, MPI_Request receiver);
+ static bool match_types(MPI_Datatype stype, MPI_Datatype rtype);
+
+public:
+ Request() = default;
+ Request(const void* buf, int count, MPI_Datatype datatype, aid_t src, aid_t dst, int tag, MPI_Comm comm,
+ unsigned flags, MPI_Op op = MPI_REPLACE);
+ MPI_Comm comm() const { return comm_; }
+ size_t size() const { return size_; }
+ size_t real_size() const { return real_size_; }
+ aid_t src() const { return src_; }
+ aid_t dst() const { return dst_; }
+ int tag() const { return tag_; }
+ int flags() const { return flags_; }
+ bool detached() const { return detached_; }
+ std::string name() const override { return "MPI_Request"; }
+ MPI_Datatype type() const { return type_; }
+ void print_request(const char* message) const;
+ void start();
+ void cancel();
+ void init_buffer(int count);
+ void ref();
+ void start_nbc_requests(std::vector<MPI_Request> reqs);
+ static int finish_nbc_requests(MPI_Request* req, int test);
+ std::vector<MPI_Request> get_nbc_requests() const;
+ static void finish_wait(MPI_Request* request, MPI_Status* status);
+ static void unref(MPI_Request* request);
+ static int wait(MPI_Request* req, MPI_Status* status);
+ static MPI_Request bsend_init(const void* buf, int count, MPI_Datatype datatype, int dst, int tag, MPI_Comm comm);
+ static MPI_Request send_init(const void* buf, int count, MPI_Datatype datatype, int dst, int tag, MPI_Comm comm);
+ static MPI_Request isend_init(const void* buf, int count, MPI_Datatype datatype, int dst, int tag, MPI_Comm comm);
+ static MPI_Request ssend_init(const void* buf, int count, MPI_Datatype datatype, int dst, int tag, MPI_Comm comm);
+ static MPI_Request rma_send_init(const void* buf, int count, MPI_Datatype datatype, int src, int dst, int tag,
+ MPI_Comm comm, MPI_Op op);
+ static MPI_Request recv_init(void* buf, int count, MPI_Datatype datatype, int src, int tag, MPI_Comm comm);
+ static MPI_Request rma_recv_init(void* buf, int count, MPI_Datatype datatype, int src, int dst, int tag,
+ MPI_Comm comm, MPI_Op op);
+ static MPI_Request irecv_init(void* buf, int count, MPI_Datatype datatype, int src, int tag, MPI_Comm comm);
+ static MPI_Request ibsend(const void* buf, int count, MPI_Datatype datatype, int dst, int tag, MPI_Comm comm);
+ static MPI_Request isend(const void* buf, int count, MPI_Datatype datatype, int dst, int tag, MPI_Comm comm);
+ static MPI_Request issend(const void* buf, int count, MPI_Datatype datatype, int dst, int tag, MPI_Comm comm);
+ static MPI_Request irecv(void* buf, int count, MPI_Datatype datatype, int src, int tag, MPI_Comm comm);
+
+ static int recv(void* buf, int count, MPI_Datatype datatype, int src, int tag, MPI_Comm comm, MPI_Status* status);
+ static void bsend(const void* buf, int count, MPI_Datatype datatype, int dst, int tag, MPI_Comm comm);
+ static void send(const void* buf, int count, MPI_Datatype datatype, int dst, int tag, MPI_Comm comm);
+ static void ssend(const void* buf, int count, MPI_Datatype datatype, int dst, int tag, MPI_Comm comm);
+
+ static void sendrecv(const void* sendbuf, int sendcount, MPI_Datatype sendtype, int dst, int sendtag, void* recvbuf,
+ int recvcount, MPI_Datatype recvtype, int src, int recvtag, MPI_Comm comm, MPI_Status* status);
+
+ static void startall(int count, MPI_Request* requests);
+
+ static int test(MPI_Request* request, MPI_Status* status, int* flag);
+ static int testsome(int incount, MPI_Request requests[], int* outcounts, int* indices, MPI_Status status[]);
+ static int testany(int count, MPI_Request requests[], int* index, int* flag, MPI_Status* status);
+ static int testall(int count, MPI_Request requests[], int* flag, MPI_Status status[]);
+
+ static void probe(int source, int tag, MPI_Comm comm, MPI_Status* status);
+ static void iprobe(int source, int tag, MPI_Comm comm, int* flag, MPI_Status* status);
+
+ static int waitany(int count, MPI_Request requests[], MPI_Status* status);
+ static int waitall(int count, MPI_Request requests[], MPI_Status status[]);
+ static int waitsome(int incount, MPI_Request requests[], int* indices, MPI_Status status[]);
+
+ static bool match_send(void* a, void* b, kernel::activity::CommImpl* ignored);
+ static bool match_recv(void* a, void* b, kernel::activity::CommImpl* ignored);
+
+ 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);
+ static int grequest_complete( MPI_Request request);
+ static int get_status(const Request* req, int* flag, MPI_Status* status);
+
+ static void free_f(int id);
+ static Request* f2c(int);
+};