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/*
* Copyright (c) 2004-2005 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.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#include "orte_config.h"
#include "orte/orte_constants.h"
#include "orte/dss/dss.h"
#include "orte/mca/ns/ns_types.h"
#include "orte/mca/oob/oob.h"
#include "orte/mca/oob/base/base.h"
#include <string.h>
#ifdef HAVE_NETINET_IN_H
#include <netinet/in.h>
#endif
/*
* Internal type to handle non-blocking packed receive.
*/
struct mca_oob_recv_cbdata {
struct iovec cbiov;
mca_oob_callback_packed_fn_t cbfunc;
void* cbdata;
bool persistent;
};
typedef struct mca_oob_recv_cbdata mca_oob_recv_cbdata_t;
static void mca_oob_recv_callback(
int status,
orte_process_name_t* peer,
struct iovec* msg,
int count,
int tag,
void* cbdata);
/*
* Non-blocking version of mca_oob_recv_nb().
*
* @param peer (IN) Opaque name of peer process or MCA_OOB_NAME_ANY for wildcard receive.
* @param msg (IN) Array of iovecs describing user buffers and lengths.
* @param count (IN) Number of elements in iovec array.
* @param flags (IN) May be MCA_OOB_PEEK to return up to size bytes of msg w/out removing it from the queue,
* @param cbfunc (IN) Callback function on recv completion.
* @param cbdata (IN) User data that is passed to callback function.
* @return OMPI error code (<0) on error or number of bytes actually received.
*/
int mca_oob_recv_nb(orte_process_name_t* peer, struct iovec* msg, int count, int tag, int flags,
mca_oob_callback_fn_t cbfunc, void* cbdata)
{
return(mca_oob.oob_recv_nb(peer, msg, count, tag, flags, cbfunc, cbdata));
}
/*
* Cancel non-blocking recv.j
*
* @param peer (IN) Opaque name of peer process or MCA_OOB_NAME_ANY for wildcard receive.
* @param tag (IN) User defined tag for message matching.
* @return OMPI success or error code (<0) on error.
*/
int mca_oob_recv_cancel(orte_process_name_t* peer, int tag)
{
return(mca_oob.oob_recv_cancel(peer, tag));
}
/**
* Non-blocking version of mca_oob_recv_packed().
*
* @param peer (IN) Opaque name of peer process or MCA_OOB_NAME_ANY for wildcard receive.
* @param buffer (IN) Array of iovecs describing user buffers and lengths.
* @param count (IN) Number of elements in iovec array.
* @param tag (IN) User defined tag for matching send/recv.
* @param flags (IN) May be MCA_OOB_PEEK to return up to size bytes of msg w/out removing it from the queue,
* @param cbfunc (IN) Callback function on recv completion.
* @param cbdata (IN) User data that is passed to callback function.
* @return OMPI error code (<0) on error or number of bytes actually received.
*
* The user supplied callback function is called asynchronously when a message is received
* that matches the call parameters.
*/
int mca_oob_recv_packed_nb(
orte_process_name_t* peer,
int tag,
int flags,
mca_oob_callback_packed_fn_t cbfunc,
void* cbdata)
{
mca_oob_recv_cbdata_t *oob_cbdata = malloc(sizeof(mca_oob_recv_cbdata_t));
int rc;
if(NULL == oob_cbdata) {
return ORTE_ERR_OUT_OF_RESOURCE;
}
memset(oob_cbdata, 0, sizeof(mca_oob_recv_cbdata_t));
oob_cbdata->cbfunc = cbfunc;
oob_cbdata->cbdata = cbdata;
oob_cbdata->persistent = (flags & MCA_OOB_PERSISTENT) ? true : false;
rc = mca_oob.oob_recv_nb(peer, &oob_cbdata->cbiov, 1, tag, flags|MCA_OOB_ALLOC, mca_oob_recv_callback, oob_cbdata);
if(rc < 0) {
free(oob_cbdata);
}
return rc;
}
/**
* Callback function on non-blocking recv completion.
*
* @param status (IN) Completion status - equivalent to the return value from blocking send/recv.
* @param peer (IN) Opaque name of peer process.
* @param msg (IN) Array of iovecs describing user buffers and lengths.
* @param count (IN) Number of elements in iovec array.
* @param tag (IN) User defined tag for matching send/recv.
* @param cbdata (IN) User data.
*/
static void mca_oob_recv_callback(
int status,
orte_process_name_t* peer,
struct iovec* msg,
int count,
int tag,
void* cbdata)
{
mca_oob_recv_cbdata_t *oob_cbdata = cbdata;
orte_buffer_t buffer;
/* validate status */
if(status < 0) {
oob_cbdata->cbfunc(status, peer, NULL, tag, oob_cbdata->cbdata);
free(oob_cbdata);
return;
}
/* init a buffer with the received message */
OBJ_CONSTRUCT(&buffer, orte_buffer_t);
orte_dss.load(&buffer,msg[0].iov_base,msg[0].iov_len);
/* call users callback function */
oob_cbdata->cbfunc(status, peer, &buffer, tag, oob_cbdata->cbdata);
/* cleanup */
OBJ_DESTRUCT(&buffer);
if(oob_cbdata->persistent == false) {
free(oob_cbdata);
}
}
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