612570134f
to let the PML (or io, more generally the low level request manager)
to have it's own release function (what was before the req_fini). This
function will only be called from the low level while the req_free will
be called from the upper level (MPI layer) in order to mark the request
as not used by the user anymore.
From the request point of view the requests will be marked as inactive
everytime we read their status (true for persistent as well). As
MPI_REQUEST_NULL is already marked as inactive, the test and wait functions
are simpler. The drawback is that now we have to change in the
ompi_request_{test|wait} the req_status of the request once we get it's
status.
This commit was SVN r9290.
102 строки
4.4 KiB
C
102 строки
4.4 KiB
C
/*
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* Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
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* University Research and Technology
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* Corporation. All rights reserved.
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* Copyright (c) 2004-2005 The University of Tennessee and The University
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* of Tennessee Research Foundation. All rights
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* reserved.
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* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
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* University of Stuttgart. All rights reserved.
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* Copyright (c) 2004-2005 The Regents of the University of California.
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* All rights reserved.
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* $COPYRIGHT$
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*
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* Additional copyrights may follow
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*
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* $HEADER$
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*/
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/**
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* @file
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*/
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#ifndef MCA_PML_BASE_RECV_REQUEST_H
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#define MCA_PML_BASE_RECV_REQUEST_H
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#include "ompi/mca/pml/base/pml_base_request.h"
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#include "ompi/datatype/convertor.h"
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#if defined(c_plusplus) || defined(__cplusplus)
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extern "C" {
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#endif
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/**
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* Base type for receive requests.
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*/
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struct mca_pml_base_recv_request_t {
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mca_pml_base_request_t req_base; /**< base request */
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ompi_convertor_t req_convertor; /**< convertor that describes this datatype */
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size_t req_bytes_packed; /**< size of message being received */
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};
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typedef struct mca_pml_base_recv_request_t mca_pml_base_recv_request_t;
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OMPI_DECLSPEC OBJ_CLASS_DECLARATION(mca_pml_base_recv_request_t);
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/**
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* Initialize a receive request with call parameters.
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*
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* @param request (IN) Receive request.
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* @param addr (IN) User buffer.
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* @param count (IN) Number of elements of indicated datatype.
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* @param datatype (IN) User defined datatype.
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* @param src (IN) Source rank w/in the communicator.
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* @param tag (IN) User defined tag.
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* @param comm (IN) Communicator.
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* @param persistent (IN) Is this a ersistent request.
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*/
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#define MCA_PML_BASE_RECV_REQUEST_INIT( \
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request, \
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addr, \
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count, \
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datatype, \
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src, \
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tag, \
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comm, \
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persistent) \
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{ \
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/* increment reference count on communicator */ \
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OBJ_RETAIN(comm); \
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OBJ_RETAIN(datatype); \
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\
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OMPI_REQUEST_INIT(&(request)->req_base.req_ompi, persistent); \
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(request)->req_bytes_packed = 0; \
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(request)->req_base.req_sequence = 0; \
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(request)->req_base.req_addr = addr; \
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(request)->req_base.req_count = count; \
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(request)->req_base.req_datatype = datatype; \
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(request)->req_base.req_peer = src; \
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(request)->req_base.req_tag = tag; \
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(request)->req_base.req_comm = comm; \
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(request)->req_base.req_proc = NULL; \
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(request)->req_base.req_pml_complete = (persistent ? true : false); \
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(request)->req_base.req_free_called = false; \
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}
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/**
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* Return a receive request. Handle the release of the communicator and the
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* attached datatype.
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*
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* @param request (IN) Receive request.
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*/
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#define MCA_PML_BASE_RECV_REQUEST_FINI( request ) \
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do { \
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OMPI_REQUEST_FINI(&(request)->req_base.req_ompi); \
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OBJ_RELEASE( (request)->req_base.req_comm); \
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OBJ_RELEASE( (request)->req_base.req_datatype ); \
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ompi_convertor_cleanup( &((request)->req_convertor) ); \
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} while (0)
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#if defined(c_plusplus) || defined(__cplusplus)
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}
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#endif
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#endif
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