pml.h

MPI stands for the Message Passing Interface. Written by the MPI Forum (a large committee comprising

    int tag,
    struct ompi_communicator_t* comm,
    struct ompi_request_t **request
);

/**
 *  Post a receive and wait for completion. 
 *
 *  @param buf (IN)         User buffer
 *  @param count (IN)       Number of elements of the specified datatype
 *  @param datatype (IN)    User defined datatype
 *  @param src (IN)         Source rank w/in communicator
 *  @param tag (IN)         User defined tag
 *  @param comm (IN)        Communicator
 *  @param status (OUT)     Completion status
 *  @return                 OMPI_SUCCESS or failure status.
 */
typedef int (*mca_pml_base_module_recv_fn_t)(
    void *buf,
    size_t count,
    struct ompi_datatype_t *datatype,
    int src,
    int tag,
    struct ompi_communicator_t* comm,
    ompi_status_public_t* status
);

/**
 *  Initialize a persistent send request. 
 *
 *  @param buf (IN)         User buffer.
 *  @param count (IN)       Number of elements of the specified datatype.
 *  @param datatype (IN)    User defined datatype.
 *  @param dst (IN)         Peer rank w/in communicator.
 *  @param tag (IN)         User defined tag.
 *  @param mode (IN)        Send mode (STANDARD,BUFFERED,SYNCHRONOUS,READY)
 *  @param comm (IN)        Communicator.
 *  @param request (OUT)    Request handle.
 *  @return                 OMPI_SUCCESS or failure status.
 */
typedef int (*mca_pml_base_module_isend_init_fn_t)(
    void *buf,
    size_t count,
    struct ompi_datatype_t *datatype,
    int dst,
    int tag,
    mca_pml_base_send_mode_t mode,
    struct ompi_communicator_t* comm,
    struct ompi_request_t **request
);


/**
 *  Post a send request. 
 *
 *  @param buf (IN)         User buffer.
 *  @param count (IN)       Number of elements of the specified datatype.
 *  @param datatype (IN)    User defined datatype.
 *  @param dst (IN)         Peer rank w/in communicator.
 *  @param tag (IN)         User defined tag.
 *  @param mode (IN)        Send mode (STANDARD,BUFFERED,SYNCHRONOUS,READY)
 *  @param comm (IN)        Communicator.
 *  @param request (OUT)    Request handle.
 *  @return                 OMPI_SUCCESS or failure status.
 */
typedef int (*mca_pml_base_module_isend_fn_t)(
    void *buf,
    size_t count,
    struct ompi_datatype_t *datatype,
    int dst,
    int tag,
    mca_pml_base_send_mode_t mode,
    struct ompi_communicator_t* comm,
    struct ompi_request_t **request
);


/**
 *  Post a send request and wait for completion.
 *
 *  @param buf (IN)         User buffer.
 *  @param count (IN)       Number of elements of the specified datatype.
 *  @param datatype (IN)    User defined datatype.
 *  @param dst (IN)         Peer rank w/in communicator.
 *  @param tag (IN)         User defined tag.
 *  @param mode (IN)        Send mode (STANDARD,BUFFERED,SYNCHRONOUS,READY)
 *  @param comm (IN)        Communicator.
 *  @return                 OMPI_SUCCESS or failure status.
 */
typedef int (*mca_pml_base_module_send_fn_t)(
    void *buf,
    size_t count,
    struct ompi_datatype_t *datatype,
    int dst,
    int tag,
    mca_pml_base_send_mode_t mode,
    struct ompi_communicator_t* comm
);

/**
 * Initiate one or more persistent requests.
 *
 * @param count    Number of requests
 * @param request  Array of persistent requests
 * @return         OMPI_SUCCESS or failure status.
 */
typedef int (*mca_pml_base_module_start_fn_t)(
    size_t count,
    struct ompi_request_t** requests
);

/**
 * Probe to poll for pending recv.
 *
 * @param src (IN)        Source rank w/in communicator.
 * @param tag (IN)        User defined tag.
 * @param comm (IN)       Communicator.
 * @param matched (OUT)   Flag indicating if matching recv exists.
 * @param status (OUT)    Completion statuses.
 * @return                OMPI_SUCCESS or failure status.
 *
 */
typedef int (*mca_pml_base_module_iprobe_fn_t)(
    int src,
    int tag,
    struct ompi_communicator_t* comm,
    int *matched,
    ompi_status_public_t *status
);

/**
 * Blocking probe to wait for pending recv.
 *
 * @param src (IN)        Source rank w/in communicator.
 * @param tag (IN)        User defined tag.
 * @param comm (IN)       Communicator.
 * @param status (OUT)    Completion statuses.
 * @return                OMPI_SUCCESS or failure status.
 *
 */
typedef int (*mca_pml_base_module_probe_fn_t)(
    int src,
    int tag,
    struct ompi_communicator_t* comm,
    ompi_status_public_t *status
);

/**
 * Cancel pending operation.
 * 
 * @param request (IN)    Request
 * @return                OMPI_SUCCESS or failure status.
 *
 */
typedef int (*mca_pml_base_module_cancel_fn_t)(
    struct ompi_request_t* request
);


/**
 * Has a request been cancelled?
 * 
 * @param request (IN)    Request
 * @return                OMPI_SUCCESS or failure status.
 *
 */
typedef int (*mca_pml_base_module_cancelled_fn_t)(
    struct ompi_request_t* request,
    int *flag
);

/**
 * Release resources held by a persistent mode request.
 *
 * @param request (IN)    Request
 * @return                OMPI_SUCCESS or failure status.
 *
 */
typedef int (*mca_pml_base_module_free_fn_t)(
    struct ompi_request_t** request
);


/**
 * A special NULL request handle.
 *
 * @param request (OUT)   Request
 * @return                OMPI_SUCCESS or failure status.
 *
 */
typedef int (*mca_pml_base_module_null_fn_t)(
    struct ompi_request_t** request
);

/**
 * Diagnostics function.
 *
 * @param request (IN)    Communicator
 * @return                OMPI_SUCCESS or failure status.
 *
 */
typedef int (*mca_pml_base_module_dump_fn_t)(
    struct ompi_communicator_t* comm,
    int verbose
);


/**
 *  PML instance.
 */

struct mca_pml_base_module_1_0_0_t {

    /* downcalls from MCA to PML */
    mca_pml_base_module_add_procs_fn_t    pml_add_procs;
    mca_pml_base_module_del_procs_fn_t    pml_del_procs;
    mca_pml_base_module_enable_fn_t       pml_enable;
    mca_pml_base_module_progress_fn_t     pml_progress;

    /* downcalls from MPI to PML */
    mca_pml_base_module_add_comm_fn_t     pml_add_comm;
    mca_pml_base_module_del_comm_fn_t     pml_del_comm;
    mca_pml_base_module_irecv_init_fn_t   pml_irecv_init;
    mca_pml_base_module_irecv_fn_t        pml_irecv;
    mca_pml_base_module_recv_fn_t         pml_recv;
    mca_pml_base_module_isend_init_fn_t   pml_isend_init;
    mca_pml_base_module_isend_fn_t        pml_isend;
    mca_pml_base_module_send_fn_t         pml_send;
    mca_pml_base_module_iprobe_fn_t       pml_iprobe;
    mca_pml_base_module_probe_fn_t        pml_probe;
    mca_pml_base_module_start_fn_t        pml_start;

    /* diagnostics */
    mca_pml_base_module_dump_fn_t         pml_dump;

    /* maximum constant sizes */
    int                                   pml_max_contextid;
    int                                   pml_max_tag;
};
typedef struct mca_pml_base_module_1_0_0_t mca_pml_base_module_1_0_0_t;
typedef mca_pml_base_module_1_0_0_t mca_pml_base_module_t;

/*
 * Macro for use in components that are of type pml v1.0.0
 */
#define MCA_PML_BASE_VERSION_1_0_0 \
  /* pml v1.0 is chained to MCA v1.0 */ \
  MCA_BASE_VERSION_1_0_0, \
  /* pml v1.0 */ \
  "pml", 1, 0, 0

    /*
     * macro for doing direct call / call through struct
     */
#if MCA_pml_DIRECT_CALL

#include MCA_pml_DIRECT_CALL_HEADER

#define MCA_PML_CALL_STAMP(a, b) mca_pml_ ## a ## _ ## b
#define MCA_PML_CALL_EXPANDER(a, b) MCA_PML_CALL_STAMP(a,b)
#define MCA_PML_CALL(a) MCA_PML_CALL_EXPANDER(MCA_pml_DIRECT_CALL_COMPONENT, a)

#else
#define MCA_PML_CALL(a) mca_pml.pml_ ## a
#endif

OMPI_DECLSPEC extern mca_pml_base_module_t mca_pml;


#if defined(c_plusplus) || defined(__cplusplus)
}
#endif
#endif /* MCA_PML_H */