433f8a7694
receive queues are shared among all PMLs, they are declared in the base PML, and the selected PML is in charge of initializing and releasing them. The CM PML is slightly different compared with OB1 or DR. Internally it use 2 different types of requests: light and heavy. However, now with this patch both types of requests are stored in the same queue, and cast appropriately on the allocation macro. This means we might use less memory than we allocate, but in exchange we got full support for most of the parallel debuggers. Another thing with this patch, is that now for all PML (CM included) the basic PML requests start with the same fields, and they are declared in the same order in the request structure. Moreover, the fields have been moved in such a way that only one volatile/atomic will exist per line of cache (hopefully). This commit was SVN r15346.
130 строки
6.2 KiB
C
130 строки
6.2 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) 2004-2007 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 (c) 2006 Cisco Systems, Inc. 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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#include "ompi/peruse/peruse-internal.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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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_base.req_ompi.req_mpi_object.comm = comm; \
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(request)->req_bytes_packed = 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_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_sequence = 0; \
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(request)->req_base.req_datatype = datatype; \
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/* What about req_type ? */ \
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(request)->req_base.req_pml_complete = OPAL_INT_TO_BOOL(persistent); \
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(request)->req_base.req_free_called = false; \
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\
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PERUSE_TRACE_COMM_EVENT (PERUSE_COMM_REQ_ACTIVATE, \
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&((request)->req_base), \
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PERUSE_RECV); \
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}
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/**
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*
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*
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*/
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#define MCA_PML_BASE_RECV_START( request ) \
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do { \
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(request)->req_pml_complete = false; \
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\
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/* always set the req_status.MPI_TAG to ANY_TAG before starting the \
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* request. This field is used if cancelled to find out if the request \
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* has been matched or not. \
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*/ \
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(request)->req_ompi.req_status.MPI_SOURCE = OMPI_ANY_SOURCE; \
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(request)->req_ompi.req_status.MPI_TAG = OMPI_ANY_TAG; \
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(request)->req_ompi.req_status.MPI_ERROR = OMPI_SUCCESS; \
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(request)->req_ompi.req_status._count = 0; \
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(request)->req_ompi.req_status._cancelled = 0; \
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\
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(request)->req_ompi.req_complete = false; \
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(request)->req_ompi.req_state = OMPI_REQUEST_ACTIVE; \
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} while (0)
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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_base.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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