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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/mca/ns/ns_types.h"
#include "orte/dss/dss.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 struct for non-blocking packed sends
*/
struct mca_oob_send_cbdata {
orte_buffer_t* cbbuf;
struct iovec cbiov;
mca_oob_callback_packed_fn_t cbfunc;
void* cbdata;
};
typedef struct mca_oob_send_cbdata mca_oob_send_cbdata_t;
static void mca_oob_send_callback(
int status,
orte_process_name_t* peer,
struct iovec* msg,
int count,
int tag,
void* cbdata);
/*
* Non-blocking version of mca_oob_send().
*
* @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 flags (IN) Currently unused.
* @param cbfunc (IN) Callback function on send completion.
* @param cbdata (IN) User data that is passed to callback function.
* @return OMPI error code (<0) on error number of bytes actually sent.
*
*/
int mca_oob_send_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_send_nb(peer, msg, count, tag, flags, cbfunc, cbdata));
}
/**
* Non-blocking version of mca_oob_send_packed().
*
* @param peer (IN) Opaque name of peer process.
* @param buffer (IN) Opaque buffer handle.
* @param tag (IN) User defined tag for matching send/recv.
* @param flags (IN) Currently unused.
* @param cbfunc (IN) Callback function on send completion.
* @param cbdata (IN) User data that is passed to callback function.
* @return OMPI error code (<0) on error number of bytes actually sent.
*
* The user supplied callback function is called when the send completes. Note that
* the callback may occur before the call to mca_oob_send returns to the caller,
* if the send completes during the call.
*
*/
int mca_oob_send_packed_nb(
orte_process_name_t* peer,
orte_buffer_t* buffer,
int tag,
int flags,
mca_oob_callback_packed_fn_t cbfunc,
void* cbdata)
{
mca_oob_send_cbdata_t *oob_cbdata;
void *dataptr;
size_t datalen;
int rc;
/* first build iovec from buffer information */
rc = orte_dss.unload(buffer, &dataptr, &datalen);
if (rc != ORTE_SUCCESS) {
return rc;
}
orte_dss.load(buffer, dataptr, datalen);
/* allocate a struct to pass into callback */
if(NULL == (oob_cbdata = malloc(sizeof(mca_oob_send_cbdata_t)))) {
return ORTE_ERR_OUT_OF_RESOURCE;
}
oob_cbdata->cbbuf = buffer;
oob_cbdata->cbfunc = cbfunc;
oob_cbdata->cbdata = cbdata;
oob_cbdata->cbiov.iov_base = dataptr;
oob_cbdata->cbiov.iov_len = datalen;
/* queue up the request */
rc = mca_oob.oob_send_nb(peer, &oob_cbdata->cbiov, 1, tag, flags, mca_oob_send_callback, oob_cbdata);
if(rc < 0) {
free(oob_cbdata);
}
return rc;
}
/**
* Callback function on send completion for buffer PACKED message only.
* i.e. only mca_oob_send_packed_nb and mca_oob_recv_packed_nb USE this.
*
* @param status (IN) Completion status - equivalent to the return value from blocking send/recv.
* @param peer (IN) Opaque name of peer process.
* @param buffer (IN) For sends, this is a pointer to a prepacked buffer
For recvs, OOB creates and returns a buffer
* @param tag (IN) User defined tag for matching send/recv.
* @param cbdata (IN) User data.
*/
static void mca_oob_send_callback(
int status,
orte_process_name_t* peer,
struct iovec* msg,
int count,
int tag,
void* cbdata)
{
/* validate status */
mca_oob_send_cbdata_t *oob_cbdata = cbdata;
if(status < 0) {
oob_cbdata->cbfunc(status, peer, NULL, tag, oob_cbdata->cbdata);
free(oob_cbdata);
return;
}
oob_cbdata->cbfunc(status, peer, oob_cbdata->cbbuf, tag, oob_cbdata->cbdata);
free(oob_cbdata);
}
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