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/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil -*- */
/*
* Copyright (c) 2004-2010 The Trustees of Indiana University and Indiana
* University Research and Technology
* Corporation. All rights reserved.
* Copyright (c) 2004-2005 The University of Tennessee and The University
* of Tennessee Research Foundation. All rights
* reserved.
* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
* University of Stuttgart. All rights reserved.
* Copyright (c) 2004-2005 The Regents of the University of California.
* All rights reserved.
* Copyright (c) 2011-2015 Los Alamos National Security, LLC. All rights
* reserved.
* Copyright (c) 2014-2017 Intel, Inc. All rights reserved.
* Copyright (c) 2015 Research Organization for Information Science
* and Technology (RIST). All rights reserved.
*
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
/**
* @file
*
* Runtime Messaging Layer (RML) Communication Interface
*
* The Runtime Messaging Layer (RML) provices basic point-to-point
* communication between ORTE processes. The system is available for
* most architectures, with some exceptions (the Cray XT3/XT4, for example).
*/
#ifndef ORTE_MCA_RML_RML_H_
#define ORTE_MCA_RML_RML_H_
#include "orte_config.h"
#include "orte/types.h"
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include "orte/mca/mca.h"
#include "opal/mca/crs/crs.h"
#include "opal/mca/crs/base/base.h"
#include "orte/mca/routed/routed.h"
#include "orte/mca/rml/rml_types.h"
BEGIN_C_DECLS
/* ******************************************************************** */
/* forward declare */
struct orte_rml_base_module_t;
struct orte_rml_component_t;
typedef struct {
opal_object_t super;
orte_process_name_t name;
opal_buffer_t data;
bool active;
} orte_rml_recv_cb_t;
OBJ_CLASS_DECLARATION(orte_rml_recv_cb_t);
/* Provide a generic callback function to release buffers
* following a non-blocking send as this happens all over
* the code base
*/
ORTE_DECLSPEC void orte_rml_send_callback(int status, orte_process_name_t* sender,
opal_buffer_t* buffer, orte_rml_tag_t tag,
void* cbdata);
ORTE_DECLSPEC void orte_rml_recv_callback(int status, orte_process_name_t* sender,
opal_buffer_t *buffer,
orte_rml_tag_t tag, void *cbdata);
/* ******************************************************************** */
/* RML CALLBACK FUNCTION DEFINITIONS */
/**
* Funtion prototype for callback from non-blocking iovec send and recv
*
* Funtion prototype for callback from non-blocking iovec send and recv.
* On send, the iovec pointer will be the same pointer passed to
* send_nb and count will equal the count given to send.
*
* On recv, the iovec pointer will be the address of a single iovec
* allocated and owned by the RML, not the process receiving the
* callback. Ownership of the data block can be transferred by setting
* a user variable to point to the data block, and setting the
* iovec->iov_base pointer to NULL.
*
* @note The parameter in/out parameters are relative to the user's callback
* function.
*
* @param[in] status Completion status
* @param[in] peer Opaque name of peer process
* @param[in] msg Pointer to the array of iovec that was sent
* or to a single iovec that has been recvd
* @param[in] count Number of iovecs in the array
* @param[in] tag User defined tag for matching send/recv
* @param[in] cbdata User data passed to send_nb()
*/
typedef void (*orte_rml_callback_fn_t)(int status,
orte_process_name_t* peer,
struct iovec* msg,
int count,
orte_rml_tag_t tag,
void* cbdata);
/**
* Funtion prototype for callback from non-blocking buffer send and receive
*
* Function prototype for callback from non-blocking buffer send and
* receive. On send, the buffer will be the same pointer passed to
* send_buffer_nb. On receive, the buffer will be allocated and owned
* by the RML, not the process receiving the callback.
*
* @note The parameter in/out parameters are relative to the user's callback
* function.
*
* @param[in] status Completion status
* @param[in] peer Name of peer process
* @param[in] buffer Message buffer
* @param[in] tag User defined tag for matching send/recv
* @param[in] cbdata User data passed to send_buffer_nb() or recv_buffer_nb()
*/
typedef void (*orte_rml_buffer_callback_fn_t)(int status,
orte_process_name_t* peer,
struct opal_buffer_t* buffer,
orte_rml_tag_t tag,
void* cbdata);
/**
* Function prototype for exception callback
*
* Function prototype for callback triggered when a communication error is detected.
*
* @note The parameter in/out parameters are relative to the user's callback
* function.
*
* @param[in] peer Name of peer process
* @param[in] exception Description of the error causing the exception
*/
typedef void (*orte_rml_exception_callback_t)(orte_process_name_t* peer,
orte_rml_exception_t exception);
/* ******************************************************************** */
/* RML INTERNAL MODULE API DEFINITION */
/**
* "Ping" another process to determine availability
*
* Ping another process to determine if it is available. This
* function only verifies that the process is alive and will allow a
* connection to the local process. It does *not* qualify as
* establishing communication with the remote process, as required by
* the note for set_contact_info().
*
* @param[in] contact_info The contact info string for the remote process
* @param[in] tv Timeout after which the ping should be failed
*
* @retval ORTE_SUCESS The process is available and will allow connections
* from the local process
* @retval ORTE_ERROR An unspecified error occurred during the update
*/
typedef int (*orte_rml_module_ping_fn_t)(struct orte_rml_base_module_t *mod,
const char* contact_info,
const struct timeval* tv);
/**
* Send an iovec non-blocking message
*
* Send an array of iovecs to the specified peer. The call
* will return immediately, although the iovecs may not be modified
* until the completion callback is triggered. The iovecs *may* be
* passed to another call to send_nb before the completion callback is
* triggered. The callback being triggered does not give any
* indication of remote completion.
*
* @param[in] peer Name of receiving process
* @param[in] msg Pointer to an array of iovecs to be sent
* @param[in] count Number of iovecs in array
* @param[in] tag User defined tag for matching send/recv
* @param[in] cbfunc Callback function on message comlpetion
* @param[in] cbdata User data to provide during completion callback
*
* @retval ORTE_SUCCESS The message was successfully started
* @retval ORTE_ERR_BAD_PARAM One of the parameters was invalid
* @retval ORTE_ERR_ADDRESSEE_UNKNOWN Contact information for the
* receiving process is not available
* @retval ORTE_ERROR An unspecified error occurred
*/
typedef int (*orte_rml_module_send_nb_fn_t)(struct orte_rml_base_module_t *mod,
orte_process_name_t* peer,
struct iovec* msg,
int count,
orte_rml_tag_t tag,
orte_rml_callback_fn_t cbfunc,
void* cbdata);
/**
* Send a buffer non-blocking message
*
* Send a buffer to the specified peer. The call
* will return immediately, although the buffer may not be modified
* until the completion callback is triggered. The buffer *may* be
* passed to another call to send_nb before the completion callback is
* triggered. The callback being triggered does not give any
* indication of remote completion.
*
* @param[in] peer Name of receiving process
* @param[in] buffer Pointer to buffer to be sent
* @param[in] tag User defined tag for matching send/recv
* @param[in] cbfunc Callback function on message comlpetion
* @param[in] cbdata User data to provide during completion callback
*
* @retval ORTE_SUCCESS The message was successfully started
* @retval ORTE_ERR_BAD_PARAM One of the parameters was invalid
* @retval ORTE_ERR_ADDRESSEE_UNKNOWN Contact information for the
* receiving process is not available
* @retval ORTE_ERROR An unspecified error occurred
*/
typedef int (*orte_rml_module_send_buffer_nb_fn_t)(struct orte_rml_base_module_t *mod,
orte_process_name_t* peer,
struct opal_buffer_t* buffer,
orte_rml_tag_t tag,
orte_rml_buffer_callback_fn_t cbfunc,
void* cbdata);
/**
* Purge the RML/OOB of contact info and pending messages
* to/from a specified process. Used when a process aborts
* and is to be restarted
*/
typedef void (*orte_rml_module_purge_fn_t)(orte_process_name_t *peer);
/**
* RML internal module interface - these will be implemented by all RML components
*/
typedef struct orte_rml_base_module_t {
/* pointer to the parent component for this module */
struct orte_rml_component_t *component;
/* the routed module to be used */
char *routed;
/** Ping process for connectivity check */
orte_rml_module_ping_fn_t ping;
/** Send non-blocking iovec message */
orte_rml_module_send_nb_fn_t send_nb;
/** Send non-blocking buffer message */
orte_rml_module_send_buffer_nb_fn_t send_buffer_nb;
/** Purge information */
orte_rml_module_purge_fn_t purge;
} orte_rml_base_module_t;
/* ******************************************************************** */
/* RML PUBLIC MODULE API DEFINITION */
/** Open conduit - call each component and see if they can provide a
* conduit that can satisfy all these attributes - return the conduit id
* (a negative value indicates error)
*/
typedef orte_rml_conduit_t (*orte_rml_API_open_conduit_fn_t)(opal_list_t *attributes);
/**
* Close a conduit - allow the component to cleanup.
*/
typedef void (*orte_rml_API_close_conduit_fn_t)(orte_rml_conduit_t id);
/**
* Query the library to provide all the supported interfaces/transport
* providers in the current node/system.
*
* @param[out] List of providers and their attributes.
*/
typedef int (*orte_rml_API_query_transports_fn_t)(opal_list_t *transports);
/* query the routed module for a given conduit */
typedef char* (*orte_rml_API_query_routed_fn_t)(orte_rml_conduit_t id);
/**
* "Ping" another process to determine availability
*
* Ping another process to determine if it is available. This
* function only verifies that the process is alive and will allow a
* connection to the local process. It does *not* qualify as
* establishing communication with the remote process, as required by
* the note for set_contact_info().
*
* @param[in] contact_info The contact info string for the remote process
* @param[in] tv Timeout after which the ping should be failed
*
* @retval ORTE_SUCESS The process is available and will allow connections
* from the local process
* @retval ORTE_ERROR An unspecified error occurred during the update
*/
typedef int (*orte_rml_API_ping_fn_t)(orte_rml_conduit_t conduit_id,
const char* contact_info,
const struct timeval* tv);
/**
* Send an iovec non-blocking message
*
* Send an array of iovecs to the specified peer. The call
* will return immediately, although the iovecs may not be modified
* until the completion callback is triggered. The iovecs *may* be
* passed to another call to send_nb before the completion callback is
* triggered. The callback being triggered does not give any
* indication of remote completion.
*
* @param[in] peer Name of receiving process
* @param[in] msg Pointer to an array of iovecs to be sent
* @param[in] count Number of iovecs in array
* @param[in] tag User defined tag for matching send/recv
* @param[in] cbfunc Callback function on message comlpetion
* @param[in] cbdata User data to provide during completion callback
*
* @retval ORTE_SUCCESS The message was successfully started
* @retval ORTE_ERR_BAD_PARAM One of the parameters was invalid
* @retval ORTE_ERR_ADDRESSEE_UNKNOWN Contact information for the
* receiving process is not available
* @retval ORTE_ERROR An unspecified error occurred
*/
typedef int (*orte_rml_API_send_nb_fn_t)(orte_rml_conduit_t conduit_id,
orte_process_name_t* peer,
struct iovec* msg,
int count,
orte_rml_tag_t tag,
orte_rml_callback_fn_t cbfunc,
void* cbdata);
/**
* Send a buffer non-blocking message
*
* Send a buffer to the specified peer. The call
* will return immediately, although the buffer may not be modified
* until the completion callback is triggered. The buffer *may* be
* passed to another call to send_nb before the completion callback is
* triggered. The callback being triggered does not give any
* indication of remote completion.
*
* @param[in] peer Name of receiving process
* @param[in] buffer Pointer to buffer to be sent
* @param[in] tag User defined tag for matching send/recv
* @param[in] cbfunc Callback function on message comlpetion
* @param[in] cbdata User data to provide during completion callback
*
* @retval ORTE_SUCCESS The message was successfully started
* @retval ORTE_ERR_BAD_PARAM One of the parameters was invalid
* @retval ORTE_ERR_ADDRESSEE_UNKNOWN Contact information for the
* receiving process is not available
* @retval ORTE_ERROR An unspecified error occurred
*/
typedef int (*orte_rml_API_send_buffer_nb_fn_t)(orte_rml_conduit_t conduit_id,
orte_process_name_t* peer,
struct opal_buffer_t* buffer,
orte_rml_tag_t tag,
orte_rml_buffer_callback_fn_t cbfunc,
void* cbdata);
/**
* Purge the RML/OOB of contact info and pending messages
* to/from a specified process. Used when a process aborts
* and is to be restarted
*/
typedef void (*orte_rml_API_purge_fn_t)(orte_process_name_t *peer);
/**
* Receive an iovec non-blocking message
*
* @param[in] peer Peer process or ORTE_NAME_WILDCARD for wildcard receive
* @param[in] tag User defined tag for matching send/recv
* @param[in] persistent Boolean flag indicating whether or not this is a one-time recv
* @param[in] cbfunc Callback function on message comlpetion
* @param[in] cbdata User data to provide during completion callback
*/
typedef void (*orte_rml_API_recv_nb_fn_t)(orte_process_name_t* peer,
orte_rml_tag_t tag,
bool persistent,
orte_rml_callback_fn_t cbfunc,
void* cbdata);
/**
* Receive a buffer non-blocking message
*
* @param[in] peer Peer process or ORTE_NAME_WILDCARD for wildcard receive
* @param[in] tag User defined tag for matching send/recv
* @param[in] persistent Boolean flag indicating whether or not this is a one-time recv
* @param[in] cbfunc Callback function on message comlpetion
* @param[in] cbdata User data to provide during completion callback
*/
typedef void (*orte_rml_API_recv_buffer_nb_fn_t)(orte_process_name_t* peer,
orte_rml_tag_t tag,
bool persistent,
orte_rml_buffer_callback_fn_t cbfunc,
void* cbdata);
/**
* Cancel a posted non-blocking receive
*
* Attempt to cancel a posted non-blocking receive.
*
* @param[in] peer Peer process or ORTE_NAME_WILDCARD, exactly as passed
* to the non-blocking receive call
* @param[in] tag Posted receive tag
*/
typedef void (*orte_rml_API_recv_cancel_fn_t)(orte_process_name_t* peer,
orte_rml_tag_t tag);
/**
* RML API interface
*/
typedef struct {
/** Open Conduit **/
orte_rml_API_open_conduit_fn_t open_conduit;
/** Shutdown the conduit and clean up resources */
orte_rml_API_close_conduit_fn_t close_conduit;
/** Ping process for connectivity check */
orte_rml_API_ping_fn_t ping;
/** Send non-blocking iovec message */
orte_rml_API_send_nb_fn_t send_nb;
/** Send non-blocking buffer message */
orte_rml_API_send_buffer_nb_fn_t send_buffer_nb;
/** Receive non-blocking iovec message */
orte_rml_API_recv_nb_fn_t recv_nb;
/** Receive non-blocking buffer message */
orte_rml_API_recv_buffer_nb_fn_t recv_buffer_nb;
/** Cancel posted non-blocking receive */
orte_rml_API_recv_cancel_fn_t recv_cancel;
/** Purge information */
orte_rml_API_purge_fn_t purge;
/** Query information of transport in system */
orte_rml_API_query_transports_fn_t query_transports;
/* get the routed module for a given conduit */
orte_rml_API_query_routed_fn_t get_routed;
} orte_rml_base_API_t;
/** Interface for RML communication */
ORTE_DECLSPEC extern orte_rml_base_API_t orte_rml;
/* ******************************************************************** */
/* RML COMPONENT DEFINITION */
/**
* RML open_conduit
*
* Create an instance (module) of the given RML component. Upon
* returning, the module data structure should be fully populated and
* all functions should be usable and will have the conduit information.
*
* @param[in] opal_list_t of all attributes requested for the conduit.
* Each attribute will be key-value.
* [TODO] put in examples of the key-value here.
* @return Exactly one module created by the call to the component's
* initialization function should be returned. The module structure
* should be fully populated, and the priority should be set to a
* reasonable value.
*
* @retval NULL An error occurred and initialization did not occur
* @retval non-NULL The module was successfully initialized
*/
typedef orte_rml_base_module_t* (*orte_rml_component_open_conduit_fn_t)(opal_list_t *attributes);
/**
* Query the library to provide all the supported interfaces/transport
* providers in the current node/system.
*
*/
typedef orte_rml_pathway_t* (*orte_rml_component_query_transports_fn_t)(void);
/** Close conduit - allow the specific component to
* cleanup the module for this conduit
*/
typedef void (*orte_rml_module_close_conduit_fn_t)(orte_rml_base_module_t *mod);
/**
* RML component interface
*
* Component interface for the RML framework. A public instance of
* this structure, called mca_rml_[component name]_component, must
* exist in any RML component.
*/
typedef struct orte_rml_component_t {
/* Base component description */
mca_base_component_t base;
/* Base component data block */
mca_base_component_data_t data;
/* Component priority */
int priority;
/* Component interface functions */
orte_rml_component_open_conduit_fn_t open_conduit;
orte_rml_component_query_transports_fn_t query_transports;
orte_rml_module_close_conduit_fn_t close_conduit;
} orte_rml_component_t;
/* ******************************************************************** */
/** Macro for use in components that are of type rml */
#define ORTE_RML_BASE_VERSION_3_0_0 \
ORTE_MCA_BASE_VERSION_2_1_0("rml", 3, 0, 0)
/* ******************************************************************** */
END_C_DECLS
#endif
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