293 строки
10 KiB
C
293 строки
10 KiB
C
/*
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* Copyright (c) 2004-2005 The Trustees of Indiana University.
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* All rights reserved.
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* Copyright (c) 2004-2005 The Trustees of the University of Tennessee.
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* All rights 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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* $COPYRIGHT$
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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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#include "ompi_config.h"
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#include "mca/ns/ns.h"
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#include "mca/oob/tcp/oob_tcp.h"
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/*
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* Similiar to unix readv(2)
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*
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* @param peer (IN) Opaque name of peer process or MCA_OOB_NAME_ANY for wildcard receive.
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* @param msg (IN) Array of iovecs describing user buffers and lengths.
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* @param types (IN) Parallel array to iovecs describing data type of each iovec element.
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* @param count (IN) Number of elements in iovec array.
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* @param tag (IN) User supplied tag for matching send/recv.
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* @param flags (IN) May be MCA_OOB_PEEK to return up to the number of bytes provided in the
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* iovec array without removing the message from the queue.
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* @return OMPI error code (<0) on error or number of bytes actually received.
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*/
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int mca_oob_tcp_recv(
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orte_process_name_t* peer,
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struct iovec *iov,
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int count,
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int tag,
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int flags)
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{
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mca_oob_tcp_msg_t *msg;
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int i, rc = 0, size = 0;
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if(mca_oob_tcp_component.tcp_debug > 3) {
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opal_output(0, "[%lu,%lu,%lu]-[%lu,%lu,%lu] mca_oob_tcp_recv: tag %d\n",
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ORTE_NAME_ARGS(orte_process_info.my_name),
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ORTE_NAME_ARGS(peer),
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tag);
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}
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/* lock the tcp struct */
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OPAL_THREAD_LOCK(&mca_oob_tcp_component.tcp_match_lock);
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/* check to see if a matching receive is on the list */
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msg = mca_oob_tcp_msg_match_recv(peer, tag);
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if(NULL != msg) {
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if(msg->msg_rc < 0) {
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OPAL_THREAD_UNLOCK(&mca_oob_tcp_component.tcp_match_lock);
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return msg->msg_rc;
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}
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/* if we are returning an allocated buffer - just take it from the message */
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if(flags & MCA_OOB_ALLOC) {
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if(NULL == iov || 0 == count) {
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return OMPI_ERR_BAD_PARAM;
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}
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iov[0].iov_base = (ompi_iov_base_ptr_t)msg->msg_rwbuf;
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iov[0].iov_len = msg->msg_hdr.msg_size;
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msg->msg_rwbuf = NULL;
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rc = msg->msg_hdr.msg_size;
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} else {
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/* if we are just doing peek, return bytes without dequeing message */
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rc = mca_oob_tcp_msg_copy(msg, iov, count);
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if(rc >= 0 && MCA_OOB_TRUNC & flags) {
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rc = 0;
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/* skip first iovec element which is the header */
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for(i=1; i<msg->msg_rwcnt+1; i++)
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rc += msg->msg_rwiov[i].iov_len;
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}
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if(MCA_OOB_PEEK & flags) {
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OPAL_THREAD_UNLOCK(&mca_oob_tcp_component.tcp_match_lock);
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return rc;
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}
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}
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/* otherwise dequeue the message and return to free list */
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opal_list_remove_item(&mca_oob_tcp_component.tcp_msg_recv, (opal_list_item_t *) msg);
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MCA_OOB_TCP_MSG_RETURN(msg);
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OPAL_THREAD_UNLOCK(&mca_oob_tcp_component.tcp_match_lock);
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return rc;
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}
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/* the message has not already been received. So we add it to the receive queue */
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MCA_OOB_TCP_MSG_ALLOC(msg, rc);
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if(NULL == msg) {
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OPAL_THREAD_UNLOCK(&mca_oob_tcp_component.tcp_match_lock);
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return rc;
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}
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/* determine overall size of user supplied buffer */
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for(i = 0; i < count; i++) {
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size += iov[i].iov_len;
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}
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/* fill in the struct */
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msg->msg_hdr.msg_size = size;
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msg->msg_hdr.msg_tag = tag;
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msg->msg_hdr.msg_type = MCA_OOB_TCP_DATA;
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msg->msg_hdr.msg_src = *peer;
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if (NULL == orte_process_info.my_name) {
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msg->msg_hdr.msg_dst = *MCA_OOB_NAME_ANY;
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} else {
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msg->msg_hdr.msg_dst = *orte_process_info.my_name;
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}
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msg->msg_type = MCA_OOB_TCP_POSTED;
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msg->msg_rc = 0;
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msg->msg_flags = flags;
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msg->msg_uiov = iov;
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msg->msg_ucnt = count;
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msg->msg_cbfunc = NULL;
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msg->msg_cbdata = NULL;
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msg->msg_complete = false;
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msg->msg_peer = *peer;
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msg->msg_rwbuf = NULL;
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msg->msg_rwiov = NULL;
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opal_list_append(&mca_oob_tcp_component.tcp_msg_post, (opal_list_item_t *) msg);
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OPAL_THREAD_UNLOCK(&mca_oob_tcp_component.tcp_match_lock);
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/* wait for the receive to complete */
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mca_oob_tcp_msg_wait(msg, &rc);
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MCA_OOB_TCP_MSG_RETURN(msg);
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return rc;
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}
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/*
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* Non-blocking version of mca_oob_recv().
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*
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* @param peer (IN) Opaque name of peer process or MCA_OOB_NAME_ANY for wildcard receive.
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* @param msg (IN) Array of iovecs describing user buffers and lengths.
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* @param count (IN) Number of elements in iovec array.
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* @param tag (IN) User supplied tag for matching send/recv.
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* @param flags (IN) May be MCA_OOB_PEEK to return up to size bytes of msg w/out removing it from the queue,
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* @param cbfunc (IN) Callback function on recv completion.
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* @param cbdata (IN) User data that is passed to callback function.
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* @return OMPI error code (<0) on error.
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*/
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int mca_oob_tcp_recv_nb(
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orte_process_name_t* peer,
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struct iovec* iov,
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int count,
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int tag,
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int flags,
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mca_oob_callback_fn_t cbfunc,
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void* cbdata)
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{
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mca_oob_tcp_msg_t *msg;
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int i, rc, size = 0;
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/* lock the tcp struct */
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OPAL_THREAD_LOCK(&mca_oob_tcp_component.tcp_match_lock);
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/* check to see if a matching receive is on the list */
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msg = mca_oob_tcp_msg_match_recv(peer, tag);
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if(NULL != msg) {
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if(msg->msg_rc < 0) {
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OPAL_THREAD_UNLOCK(&mca_oob_tcp_component.tcp_match_lock);
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return msg->msg_rc;
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}
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/* if we are returning an allocated buffer - just take it from the message */
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if(flags & MCA_OOB_ALLOC) {
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if(NULL == iov || 0 == count) {
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OPAL_THREAD_UNLOCK(&mca_oob_tcp_component.tcp_match_lock);
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return OMPI_ERR_BAD_PARAM;
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}
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iov[0].iov_base = (ompi_iov_base_ptr_t)msg->msg_rwbuf;
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iov[0].iov_len = msg->msg_hdr.msg_size;
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msg->msg_rwbuf = NULL;
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rc = msg->msg_hdr.msg_size;
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} else {
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/* if we are just doing peek, return bytes without dequeing message */
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rc = mca_oob_tcp_msg_copy(msg, iov, count);
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if(rc >= 0 && MCA_OOB_TRUNC & flags) {
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rc = 0;
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for(i=1; i<msg->msg_rwcnt+1; i++)
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rc += msg->msg_rwiov[i].iov_len;
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}
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if(MCA_OOB_PEEK & flags) {
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OPAL_THREAD_UNLOCK(&mca_oob_tcp_component.tcp_match_lock);
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cbfunc(rc, &msg->msg_peer, iov, count, tag, cbdata);
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return 0;
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}
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}
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/* otherwise dequeue the message and return to free list */
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opal_list_remove_item(&mca_oob_tcp_component.tcp_msg_recv, (opal_list_item_t *) msg);
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OPAL_THREAD_UNLOCK(&mca_oob_tcp_component.tcp_match_lock);
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cbfunc(rc, &msg->msg_peer, iov, count, msg->msg_hdr.msg_tag, cbdata);
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MCA_OOB_TCP_MSG_RETURN(msg);
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return rc;
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}
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/* the message has not already been received. So we add it to the receive queue */
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MCA_OOB_TCP_MSG_ALLOC(msg, rc);
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if(NULL == msg) {
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OPAL_THREAD_UNLOCK(&mca_oob_tcp_component.tcp_match_lock);
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return rc;
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}
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/* determine overall size of user supplied buffer */
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for(i = 0; i < count; i++) {
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size += iov[i].iov_len;
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}
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/* fill in the header */
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msg->msg_hdr.msg_src = *orte_process_info.my_name;
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msg->msg_hdr.msg_dst = *peer;
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msg->msg_hdr.msg_size = size;
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msg->msg_hdr.msg_tag = tag;
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msg->msg_type = MCA_OOB_TCP_POSTED;
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msg->msg_rc = 0;
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msg->msg_flags = flags;
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msg->msg_uiov = iov;
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msg->msg_ucnt = count;
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msg->msg_cbfunc = cbfunc;
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msg->msg_cbdata = cbdata;
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msg->msg_complete = false;
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msg->msg_peer = *peer;
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msg->msg_rwbuf = NULL;
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msg->msg_rwiov = NULL;
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opal_list_append(&mca_oob_tcp_component.tcp_msg_post, (opal_list_item_t *) msg);
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OPAL_THREAD_UNLOCK(&mca_oob_tcp_component.tcp_match_lock);
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return 0;
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}
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/*
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* Cancel non-blocking recv.
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*
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* @param peer (IN) Opaque name of peer process or MCA_OOB_NAME_ANY for wildcard receive.
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* @param tag (IN) User supplied tag for matching send/recv.
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* @return OMPI error code (<0) on error or number of bytes actually received.
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*/
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int mca_oob_tcp_recv_cancel(
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orte_process_name_t* name,
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int tag)
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{
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int matched = 0, cmpval1, cmpval2;
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opal_list_item_t *item, *next;
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/* wait for any previously matched messages to be processed */
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OPAL_THREAD_LOCK(&mca_oob_tcp_component.tcp_match_lock);
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#if OMPI_ENABLE_PROGRESS_THREADS
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if(opal_event_progress_thread() == false) {
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while(mca_oob_tcp_component.tcp_match_count) {
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opal_condition_wait(
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&mca_oob_tcp_component.tcp_match_cond,
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&mca_oob_tcp_component.tcp_match_lock);
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}
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}
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#endif
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/* remove any matching posted receives */
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for(item = opal_list_get_first(&mca_oob_tcp_component.tcp_msg_post);
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item != opal_list_get_end(&mca_oob_tcp_component.tcp_msg_post);
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item = next) {
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mca_oob_tcp_msg_t* msg = (mca_oob_tcp_msg_t*)item;
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next = opal_list_get_next(item);
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cmpval1 = orte_ns.compare(ORTE_NS_CMP_ALL, name, MCA_OOB_NAME_ANY);
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cmpval2 = orte_ns.compare(ORTE_NS_CMP_ALL, &msg->msg_peer, name);
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if ((0 == cmpval1) || (0 == cmpval2)) {
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if (msg->msg_hdr.msg_tag == tag) {
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opal_list_remove_item(&mca_oob_tcp_component.tcp_msg_post, &msg->super);
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MCA_OOB_TCP_MSG_RETURN(msg);
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matched++;
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}
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}
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}
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OPAL_THREAD_UNLOCK(&mca_oob_tcp_component.tcp_match_lock);
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return (matched > 0) ? OMPI_SUCCESS : OMPI_ERR_NOT_FOUND;
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}
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