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.
136 строки
6.5 KiB
C
136 строки
6.5 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_SEND_REQUEST_H
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#define MCA_PML_BASE_SEND_REQUEST_H
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#include "ompi_config.h"
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#include "ompi/mca/pml/pml.h"
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#include "ompi/mca/pml/base/pml_base_request.h"
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#include "ompi/datatype/datatype.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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OMPI_DECLSPEC extern opal_class_t mca_pml_base_send_request_t_class;
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/**
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* Base type for send requests
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*/
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struct mca_pml_base_send_request_t {
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mca_pml_base_request_t req_base; /** base request type - common data structure for use by wait/test */
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struct ompi_datatype_t* req_datatype; /**< pointer to datatype */
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void *req_addr; /**< pointer to send buffer - may not be application buffer */
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size_t req_count; /**< number of elements in send buffer */
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size_t req_bytes_packed; /**< packed size of a message given the datatype and count */
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mca_pml_base_send_mode_t req_send_mode; /**< type of send */
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ompi_convertor_t req_convertor; /**< convertor that describes this datatype */
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};
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typedef struct mca_pml_base_send_request_t mca_pml_base_send_request_t;
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/**
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* Initialize a send request with call parameters.
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*
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* @param request (IN) Send 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 peer (IN) Destination rank
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* @param tag (IN) User defined tag
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* @param comm (IN) Communicator
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* @param mode (IN) Send mode (STANDARD,BUFFERED,SYNCHRONOUS,READY)
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* @param persistent (IN) Is request persistent.
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*
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* Perform a any one-time initialization. Note that per-use initialization
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* is done in the send request start routine.
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*/
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#define MCA_PML_BASE_SEND_REQUEST_INIT( request, \
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addr, \
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count, \
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datatype, \
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peer, \
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tag, \
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comm, \
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mode, \
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persistent) \
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{ \
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/* increment reference counts */ \
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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_addr = addr; \
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(request)->req_count = count; \
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(request)->req_datatype = datatype; \
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(request)->req_send_mode = mode; \
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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 = (int32_t)peer; \
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(request)->req_base.req_tag = (int32_t)tag; \
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(request)->req_base.req_comm = comm; \
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/* (request)->req_base.req_proc is set on request allocation */ \
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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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(request)->req_base.req_ompi.req_status._cancelled = 0; \
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\
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/* initialize datatype convertor for this request */ \
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if(count > 0) { \
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/* We will create a convertor specialized for the */ \
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/* remote architecture and prepared with the datatype. */ \
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ompi_convertor_copy_and_prepare_for_send( \
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(request)->req_base.req_proc->proc_convertor, \
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(request)->req_base.req_datatype, \
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(request)->req_base.req_count, \
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(request)->req_base.req_addr, \
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&(request)->req_convertor ); \
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ompi_convertor_get_packed_size( &(request)->req_convertor, \
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&((request)->req_bytes_packed) );\
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} else { \
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(request)->req_bytes_packed = 0; \
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} \
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}
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/**
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* Release the ref counts on the communicator and datatype.
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*
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* @param request (IN) The send request.
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*/
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#define MCA_PML_BASE_SEND_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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