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8b60c755c2
openmpi/orte/mca/oob/tcp/oob_tcp_msg.c
Shiqing Fan 8b60c755c2 - Bring r19742 into trunk. 
- Unify the Windows and the others way of handling callbacks. Thanks to George.
- This will let Windows use the same callbacks as Linux does, which works also.

This commit was SVN r19746.

The following SVN revisions from the original message are invalid or
inconsistent and therefore were not cross-referenced:
  r19742
2008-10-15 08:14:24 +00:00

703 строки
26 KiB
C
Исходник Ответственный История

/*
* Copyright (c) 2004-2008 The Trustees of Indiana University and Indiana
* University Research and Technology
* Corporation. All rights reserved.
* Copyright (c) 2004-2008 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) 2006-2007 Los Alamos National Security, LLC.
* All rights reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*
* In windows, many of the socket functions return an EWOULDBLOCK
* instead of \ things like EAGAIN, EINPROGRESS, etc. It has been
* verified that this will \ not conflict with other error codes that
* are returned by these functions \ under UNIX/Linux environments
*/
#include "orte_config.h"
#include "orte/constants.h"
#include "opal/opal_socket_errno.h"
#include "opal/class/opal_hash_table.h"
#include "orte/util/name_fns.h"
#include "orte/mca/errmgr/errmgr.h"
#include "orte/mca/routed/routed.h"
#include "orte/runtime/orte_globals.h"
#include "orte/mca/oob/tcp/oob_tcp.h"
#include "orte/mca/oob/tcp/oob_tcp_msg.h"
static void mca_oob_tcp_msg_construct(mca_oob_tcp_msg_t*);
static void mca_oob_tcp_msg_destruct(mca_oob_tcp_msg_t*);
static void mca_oob_tcp_msg_ident(mca_oob_tcp_msg_t* msg, mca_oob_tcp_peer_t* peer);
static bool mca_oob_tcp_msg_recv(mca_oob_tcp_msg_t* msg, mca_oob_tcp_peer_t* peer);
static void mca_oob_tcp_msg_data(mca_oob_tcp_msg_t* msg, mca_oob_tcp_peer_t* peer);
static void mca_oob_tcp_msg_ping(mca_oob_tcp_msg_t* msg, mca_oob_tcp_peer_t* peer);
OBJ_CLASS_INSTANCE(
mca_oob_tcp_msg_t,
opal_list_item_t,
mca_oob_tcp_msg_construct,
mca_oob_tcp_msg_destruct);
static void mca_oob_tcp_msg_construct(mca_oob_tcp_msg_t* msg)
{
OBJ_CONSTRUCT(&msg->msg_lock, opal_mutex_t);
OBJ_CONSTRUCT(&msg->msg_condition, opal_condition_t);
}
static void mca_oob_tcp_msg_destruct(mca_oob_tcp_msg_t* msg)
{
OBJ_DESTRUCT(&msg->msg_lock);
OBJ_DESTRUCT(&msg->msg_condition);
}
/*
* Wait for a msg to complete.
* @param msg (IN) Message to wait on.
* @param rc (OUT) Return code (number of bytes read on success or error code on failure).
* @retval ORTE_SUCCESS or error code on failure.
*/
int mca_oob_tcp_msg_wait(mca_oob_tcp_msg_t* msg, int* rc)
{
#if OMPI_ENABLE_PROGRESS_THREADS
OPAL_THREAD_LOCK(&msg->msg_lock);
while(msg->msg_complete == false) {
if(opal_event_progress_thread()) {
int rc;
OPAL_THREAD_UNLOCK(&msg->msg_lock);
rc = opal_event_loop(OPAL_EVLOOP_ONCE);
assert(rc >= 0);
OPAL_THREAD_LOCK(&msg->msg_lock);
} else {
opal_condition_wait(&msg->msg_condition, &msg->msg_lock);
}
}
OPAL_THREAD_UNLOCK(&msg->msg_lock);
#else
/* wait for message to complete */
while(msg->msg_complete == false) {
/* msg_wait() is used in the "barrier" at the completion of
MPI_FINALIZE, during which time BTLs may still need to
progress pending outgoing communication, so we need to
call opal_progress() here to make sure that communication
gets pushed out so others can enter finalize (and send us
the message we're here waiting for). However, if we're
in a callback from the event library that was triggered
from a call to opal_progress(), opal_progress() will
think another thread is already progressing the event
engine (in the case of mpi threads enabled) and not
progress the engine, meaning we'll never receive our
message. So we also need to progress the event library
expicitly. We use EVLOOP_NONBLOCK so that we can
progress both the registered callbacks and the event
library, as EVLOOP_ONCE may block for a short period of
time. */
opal_progress();
opal_event_loop(OPAL_EVLOOP_NONBLOCK);
OPAL_CR_TEST_CHECKPOINT_READY();
}
#endif
/* return status */
if(NULL != rc) {
*rc = msg->msg_rc;
}
return ORTE_SUCCESS;
}
/*
* Wait up to a timeout for the message to complete.
* @param msg (IN) Message to wait on.
* @param rc (OUT) Return code (number of bytes read on success or error code on failure).
* @retval ORTE_SUCCESS or error code on failure.
*/
int mca_oob_tcp_msg_timedwait(mca_oob_tcp_msg_t* msg, int* rc, struct timespec* abstime)
{
struct timeval tv;
uint32_t secs = abstime->tv_sec;
uint32_t usecs = abstime->tv_nsec * 1000;
gettimeofday(&tv,NULL);
#if OMPI_ENABLE_PROGRESS_THREADS
OPAL_THREAD_LOCK(&msg->msg_lock);
while(msg->msg_complete == false &&
((uint32_t)tv.tv_sec <= secs ||
((uint32_t)tv.tv_sec == secs && (uint32_t)tv.tv_usec < usecs))) {
if(opal_event_progress_thread()) {
int rc;
OPAL_THREAD_UNLOCK(&msg->msg_lock);
rc = opal_event_loop(OPAL_EVLOOP_ONCE);
assert(rc >= 0);
OPAL_THREAD_LOCK(&msg->msg_lock);
} else {
opal_condition_timedwait(&msg->msg_condition, &msg->msg_lock, abstime);
}
gettimeofday(&tv,NULL);
}
OPAL_THREAD_UNLOCK(&msg->msg_lock);
#else
/* wait for message to complete */
while(msg->msg_complete == false &&
((uint32_t)tv.tv_sec <= secs ||
((uint32_t)tv.tv_sec == secs && (uint32_t)tv.tv_usec < usecs))) {
/* see comment in tcp_msg_wait, above */
opal_progress();
opal_event_loop(OPAL_EVLOOP_NONBLOCK);
gettimeofday(&tv,NULL);
}
#endif
/* return status */
if(NULL != rc) {
*rc = msg->msg_rc;
}
if(msg->msg_rc < 0)
return msg->msg_rc;
return (msg->msg_complete ? ORTE_SUCCESS : ORTE_ERR_TIMEOUT);
}
/*
* Signal that a message has completed.
* @param msg (IN) Message to wait on.
* @param peer (IN) the peer of the message
* @retval ORTE_SUCCESS or error code on failure.
*/
int mca_oob_tcp_msg_complete(mca_oob_tcp_msg_t* msg, orte_process_name_t * peer)
{
OPAL_THREAD_LOCK(&msg->msg_lock);
msg->msg_complete = true;
if(NULL != msg->msg_cbfunc) {
OPAL_THREAD_UNLOCK(&msg->msg_lock);
/* post to a global list of completed messages */
if ((msg->msg_flags & ORTE_RML_FLAG_RECURSIVE_CALLBACK) == 0) {
int size;
OPAL_THREAD_LOCK(&mca_oob_tcp_component.tcp_lock);
opal_list_append(&mca_oob_tcp_component.tcp_msg_completed, (opal_list_item_t*)msg);
size = opal_list_get_size(&mca_oob_tcp_component.tcp_msg_completed);
OPAL_THREAD_UNLOCK(&mca_oob_tcp_component.tcp_lock);
if(size > 1) {
return ORTE_SUCCESS;
}
}
/* invoke message callback */
msg->msg_cbfunc(msg->msg_rc, peer, msg->msg_uiov, msg->msg_ucnt, msg->msg_hdr.msg_tag, msg->msg_cbdata);
/* dispatch any completed events */
if ((msg->msg_flags & ORTE_RML_FLAG_RECURSIVE_CALLBACK) == 0) {
opal_list_item_t* item;
OPAL_THREAD_LOCK(&mca_oob_tcp_component.tcp_lock);
opal_list_remove_item(&mca_oob_tcp_component.tcp_msg_completed, (opal_list_item_t*)msg);
MCA_OOB_TCP_MSG_RETURN(msg);
while(NULL !=
(item = opal_list_remove_first(&mca_oob_tcp_component.tcp_msg_completed))) {
msg = (mca_oob_tcp_msg_t*)item;
OPAL_THREAD_UNLOCK(&mca_oob_tcp_component.tcp_lock);
msg->msg_cbfunc(
msg->msg_rc,
&msg->msg_peer,
msg->msg_uiov,
msg->msg_ucnt,
msg->msg_hdr.msg_tag,
msg->msg_cbdata);
OPAL_THREAD_LOCK(&mca_oob_tcp_component.tcp_lock);
MCA_OOB_TCP_MSG_RETURN(msg);
}
OPAL_THREAD_UNLOCK(&mca_oob_tcp_component.tcp_lock);
} else {
MCA_OOB_TCP_MSG_RETURN(msg);
}
} else {
opal_condition_broadcast(&msg->msg_condition);
OPAL_THREAD_UNLOCK(&msg->msg_lock);
}
return ORTE_SUCCESS;
}
/*
* The function that actually sends the data!
* @param msg a pointer to the message to send
* @param peer the peer we are sending to
* @retval true if the entire message has been sent
* @retval false if the entire message has not been sent
*/
bool mca_oob_tcp_msg_send_handler(mca_oob_tcp_msg_t* msg, struct mca_oob_tcp_peer_t * peer)
{
int rc;
while(1) {
rc = writev(peer->peer_sd, msg->msg_rwptr, msg->msg_rwnum);
if(rc < 0) {
if(opal_socket_errno == EINTR)
continue;
/* In windows, many of the socket functions return an EWOULDBLOCK instead of \
things like EAGAIN, EINPROGRESS, etc. It has been verified that this will \
not conflict with other error codes that are returned by these functions \
under UNIX/Linux environments */
else if (opal_socket_errno == EAGAIN || opal_socket_errno == EWOULDBLOCK)
return false;
else {
opal_output(0, "%s->%s mca_oob_tcp_msg_send_handler: writev failed: %s (%d) [sd = %d]",
ORTE_NAME_PRINT(ORTE_PROC_MY_NAME),
ORTE_NAME_PRINT(&(peer->peer_name)),
strerror(opal_socket_errno),
opal_socket_errno,
peer->peer_sd);
mca_oob_tcp_peer_close(peer);
msg->msg_rc = ORTE_ERR_CONNECTION_FAILED;
return true;
}
}
msg->msg_rc += rc;
do {/* while there is still more iovecs to write */
if(rc < (int)msg->msg_rwptr->iov_len) {
msg->msg_rwptr->iov_len -= rc;
msg->msg_rwptr->iov_base = (ompi_iov_base_ptr_t)((char *) msg->msg_rwptr->iov_base + rc);
break;
} else {
rc -= msg->msg_rwptr->iov_len;
(msg->msg_rwnum)--;
(msg->msg_rwptr)++;
if(0 == msg->msg_rwnum) {
return true;
}
}
} while(1);
}
}
/*
* Receives message data.
* @param msg the message to be received into
* @param peer the peer to receive from
* @retval true if the whole message was received
* @retval false if the whole message was not received
*/
bool mca_oob_tcp_msg_recv_handler(mca_oob_tcp_msg_t* msg, struct mca_oob_tcp_peer_t * peer)
{
/* has entire header been received */
if(msg->msg_rwptr == msg->msg_rwiov) {
if(mca_oob_tcp_msg_recv(msg, peer) == false)
return false;
/* allocate a buffer for the receive */
MCA_OOB_TCP_HDR_NTOH(&msg->msg_hdr);
if(msg->msg_hdr.msg_size > 0) {
msg->msg_rwbuf = malloc(msg->msg_hdr.msg_size);
if(NULL == msg->msg_rwbuf) {
opal_output(0, "%s-%s mca_oob_tcp_msg_recv_handler: malloc(%d) failed\n",
ORTE_NAME_PRINT(ORTE_PROC_MY_NAME),
ORTE_NAME_PRINT(&(peer->peer_name)),
msg->msg_hdr.msg_size);
mca_oob_tcp_peer_close(peer);
return false;
}
msg->msg_rwiov[1].iov_base = (ompi_iov_base_ptr_t)msg->msg_rwbuf;
msg->msg_rwiov[1].iov_len = msg->msg_hdr.msg_size;
msg->msg_rwnum = 1;
} else {
msg->msg_rwiov[1].iov_base = NULL;
msg->msg_rwiov[1].iov_len = 0;
msg->msg_rwnum = 0;
}
if (mca_oob_tcp_component.tcp_debug >= OOB_TCP_DEBUG_INFO) {
opal_output(0, "%s-%s (origin: %s) mca_oob_tcp_msg_recv_handler: size %lu\n",
ORTE_NAME_PRINT(ORTE_PROC_MY_NAME),
ORTE_NAME_PRINT(&(peer->peer_name)),
ORTE_NAME_PRINT(&(msg->msg_hdr.msg_origin)),
(unsigned long)(msg->msg_hdr.msg_size) );
}
}
/* do the right thing based on the message type */
switch(msg->msg_hdr.msg_type) {
case MCA_OOB_TCP_IDENT:
/* done - there is nothing else to receive */
return true;
case MCA_OOB_TCP_PING:
/* done - there is nothing else to receive */
return true;
case MCA_OOB_TCP_DATA:
/* finish receiving message */
return mca_oob_tcp_msg_recv(msg, peer);
default:
return true;
}
}
/**
* Process the current iovec
*/
static bool mca_oob_tcp_msg_recv(mca_oob_tcp_msg_t* msg, mca_oob_tcp_peer_t* peer)
{
int rc;
while(msg->msg_rwnum) {
rc = readv(peer->peer_sd, msg->msg_rwptr, msg->msg_rwnum);
if(rc < 0) {
if(opal_socket_errno == EINTR)
continue;
/* In windows, many of the socket functions return an EWOULDBLOCK instead of \
things like EAGAIN, EINPROGRESS, etc. It has been verified that this will \
not conflict with other error codes that are returned by these functions \
under UNIX/Linux environments */
else if (opal_socket_errno == EAGAIN || opal_socket_errno == EWOULDBLOCK)
return false;
opal_output(0, "%s-%s mca_oob_tcp_msg_recv: readv failed: %s (%d)",
ORTE_NAME_PRINT(ORTE_PROC_MY_NAME),
ORTE_NAME_PRINT(&(peer->peer_name)),
strerror(opal_socket_errno),
opal_socket_errno);
mca_oob_tcp_peer_close(peer);
if (NULL != mca_oob_tcp.oob_exception_callback) {
mca_oob_tcp.oob_exception_callback(&peer->peer_name, ORTE_RML_PEER_DISCONNECTED);
}
return false;
} else if (rc == 0) {
/* Under Windows have the PROTOCOL explicitly close the socket?? */
if(mca_oob_tcp_component.tcp_debug >= OOB_TCP_DEBUG_CONNECT_FAIL) {
opal_output(0, "%s-%s mca_oob_tcp_msg_recv: peer closed connection",
ORTE_NAME_PRINT(ORTE_PROC_MY_NAME),
ORTE_NAME_PRINT(&(peer->peer_name)));
}
mca_oob_tcp_peer_close(peer);
if (NULL != mca_oob_tcp.oob_exception_callback) {
mca_oob_tcp.oob_exception_callback(&peer->peer_name, ORTE_RML_PEER_DISCONNECTED);
}
return false;
}
do {
if(rc < (int)msg->msg_rwptr->iov_len) {
msg->msg_rwptr->iov_len -= rc;
msg->msg_rwptr->iov_base = (ompi_iov_base_ptr_t)((char *) msg->msg_rwptr->iov_base + rc);
break;
} else {
rc -= msg->msg_rwptr->iov_len;
(msg->msg_rwnum)--;
(msg->msg_rwptr)++;
if(0 == msg->msg_rwnum) {
assert( 0 == rc );
return true;
}
}
} while(1);
}
return true;
}
/**
* Process a completed message.
*/
void mca_oob_tcp_msg_recv_complete(mca_oob_tcp_msg_t* msg, mca_oob_tcp_peer_t* peer)
{
switch(msg->msg_hdr.msg_type) {
case MCA_OOB_TCP_IDENT:
mca_oob_tcp_msg_ident(msg,peer);
break;
case MCA_OOB_TCP_PING:
mca_oob_tcp_msg_ping(msg,peer);
break;
case MCA_OOB_TCP_DATA:
mca_oob_tcp_msg_data(msg,peer);
break;
default:
opal_output(0, "%s mca_oob_tcp_msg_recv_complete: invalid message type: %d from peer %s\n",
ORTE_NAME_PRINT(ORTE_PROC_MY_NAME), msg->msg_hdr.msg_type,
ORTE_NAME_PRINT(&peer->peer_name));
MCA_OOB_TCP_MSG_RETURN(msg);
break;
}
}
/**
* Process an ident message. In this case, we insist that the two process names
* exactly match - hence, we use the orte_ns.compare_fields function, which
* checks each field in a literal manner (i.e., no wildcards).
*/
static void mca_oob_tcp_msg_ident(mca_oob_tcp_msg_t* msg, mca_oob_tcp_peer_t* peer)
{
orte_process_name_t src = msg->msg_hdr.msg_src;
OPAL_THREAD_LOCK(&mca_oob_tcp_component.tcp_lock);
if (orte_util_compare_name_fields(ORTE_NS_CMP_ALL, &peer->peer_name, &src) != OPAL_EQUAL) {
opal_hash_table_remove_value_uint64(&mca_oob_tcp_component.tcp_peers,
orte_util_hash_name(&peer->peer_name));
peer->peer_name = src;
opal_hash_table_set_value_uint64(&mca_oob_tcp_component.tcp_peers,
orte_util_hash_name(&peer->peer_name), peer);
}
OPAL_THREAD_UNLOCK(&mca_oob_tcp_component.tcp_lock);
}
/**
* Process a ping message.
*/
static void mca_oob_tcp_msg_ping(mca_oob_tcp_msg_t* msg, mca_oob_tcp_peer_t* peer)
{
/* for now - we dont do anything - may want to send back a response at some poing */
}
#ifdef __WINDOWS__
/*
* XXX First try to fix orte issues, that readv is polled early and msg
*/
struct envelope_t {
mca_oob_tcp_peer_t* peer;
mca_oob_tcp_msg_t* post;
};
static void peer_event_callback_wrapper (int fd, short flags, void * envelope)
{
mca_oob_tcp_peer_t* peer = ((envelope_t *) envelope)->peer;
mca_oob_tcp_msg_t* post = ((envelope_t *) envelope)->post;
/* XXX We should have a ref_count per post, maybe on peer
* and have the event released
* If the event is not Persistent (like this one),
* it should freed again
*/
post->msg_cbfunc(
post->msg_rc,
&peer->peer_name,
post->msg_uiov,
post->msg_ucnt,
post->msg_hdr.msg_tag,
post->msg_cbdata);
}
#endif
/*
* Progress a completed recv:
* (1) signal a posted recv as complete
* (2) queue an unexpected message in the recv list
*/
static void mca_oob_tcp_msg_data(mca_oob_tcp_msg_t* msg, mca_oob_tcp_peer_t* peer)
{
/* attempt to match unexpected message to a posted recv */
mca_oob_tcp_msg_t* post;
int rc;
OPAL_THREAD_LOCK(&mca_oob_tcp_component.tcp_match_lock);
if (ORTE_JOB_FAMILY(msg->msg_hdr.msg_origin.jobid) !=
ORTE_JOB_FAMILY(ORTE_PROC_MY_NAME->jobid)) {
/* this message came from a different job family, so we may
* not know how to route any reply back to the originator. Update
* our route so we can dynamically build the routing table
*/
/* if the origin and the src are the same, then we don't need to do
* this - update_route was already called when the connection was
* established in oob_tcp_peer
*/
if (OPAL_EQUAL != orte_util_compare_name_fields(ORTE_NS_CMP_ALL,
&(msg->msg_hdr.msg_origin),
&(msg->msg_hdr.msg_src))) {
if (ORTE_SUCCESS != (rc = orte_routed.update_route(&(msg->msg_hdr.msg_origin),
&(msg->msg_hdr.msg_src)))) {
/* Nothing we can do about errors here as we definitely want
* the receive to complete, but at least bark loudly
*/
ORTE_ERROR_LOG(rc);
}
}
}
/* match msg against posted receives */
post = mca_oob_tcp_msg_match_post(&msg->msg_hdr.msg_origin, msg->msg_hdr.msg_tag);
if(NULL != post) {
if(NULL == post->msg_uiov || 0 == post->msg_ucnt) {
opal_output(0, "msg_data returning bad param");
post->msg_rc = ORTE_ERR_BAD_PARAM;
} else {
/* copy msg data into posted recv */
if (post->msg_flags & ORTE_RML_ALLOC) msg->msg_flags |= ORTE_RML_ALLOC;
post->msg_rc = mca_oob_tcp_msg_copy(msg, post->msg_uiov, post->msg_ucnt);
if(post->msg_flags & ORTE_RML_TRUNC) {
int i, size = 0;
for(i=1; i<msg->msg_rwcnt+1; i++)
size += msg->msg_rwiov[i].iov_len;
post->msg_rc = size;
}
}
if(post->msg_flags & ORTE_RML_PEEK) {
/* will need message for actual receive */
opal_list_append(&mca_oob_tcp_component.tcp_msg_recv, &msg->super.super);
} else {
MCA_OOB_TCP_MSG_RETURN(msg);
}
mca_oob_tcp_component.tcp_match_count++;
OPAL_THREAD_UNLOCK(&mca_oob_tcp_component.tcp_match_lock);
if(post->msg_flags & ORTE_RML_PERSISTENT) {
#ifdef __WINDOWS__
/*
* In order to protect against reentry, due to a event in
* a threaded callback (and thereby reading EOF, thereby falsely *closing* the connection),
* just register a wrapper callback with zero timeout to libevent.
*
* This will be called "real soon", but we will be ready to grasp the next event.
*/
{
struct envelope_t * envelope;
opal_event_t * peer_event;
peer_event = (opal_event_t *) malloc (sizeof (opal_event_t));
memset (peer_event, 0, sizeof (opal_event_t));
envelope = (envelope_t *) malloc (sizeof (struct envelope_t));
envelope->peer = peer;
envelope->post = post;
opal_evtimer_set(peer_event, peer_event_callback_wrapper, envelope);
opal_event_add (peer_event, 0);
}
#else
post->msg_cbfunc(
post->msg_rc,
&peer->peer_name,
post->msg_uiov,
post->msg_ucnt,
post->msg_hdr.msg_tag,
post->msg_cbdata);
#endif /* __WINDOWS__ */
} else {
mca_oob_tcp_msg_complete(post, &msg->msg_hdr.msg_origin);
}
OPAL_THREAD_LOCK(&mca_oob_tcp_component.tcp_match_lock);
if(--mca_oob_tcp_component.tcp_match_count == 0)
opal_condition_signal(&mca_oob_tcp_component.tcp_match_cond);
OPAL_THREAD_UNLOCK(&mca_oob_tcp_component.tcp_match_lock);
} else {
opal_list_append(&mca_oob_tcp_component.tcp_msg_recv, (opal_list_item_t*)msg);
OPAL_THREAD_UNLOCK(&mca_oob_tcp_component.tcp_match_lock);
}
}
/*
* Called to copy the results of a message into user supplied iovec array.
* @param msg (IN) Message send that is in progress.
* @param iov (IN) Iovec array of user supplied buffers.
* @retval count Number of elements in iovec array.
*/
int mca_oob_tcp_msg_copy(mca_oob_tcp_msg_t* msg, struct iovec* iov, int count)
{
int i, ret = 0;
unsigned char* src_ptr = (unsigned char*) msg->msg_rwbuf;
size_t src_len = msg->msg_hdr.msg_size;
for (i = 0 ; i < count ; i++) {
if ((msg->msg_flags & ORTE_RML_ALLOC) && (i == count - 1)) {
if (i == 0) {
iov[i].iov_base = (IOVBASE_TYPE *) src_ptr;
iov[i].iov_len = src_len;
msg->msg_rwbuf = NULL;
} else {
iov[i].iov_base = (IOVBASE_TYPE *) malloc(src_len);
iov[i].iov_len = src_len;
memcpy(iov[i].iov_base, src_ptr, src_len);
}
} else {
if (iov[i].iov_len > src_len) {
memcpy(iov[i].iov_base, src_ptr, src_len);
iov[i].iov_len = src_len;
} else {
memcpy(iov[i].iov_base, src_ptr, iov[i].iov_len);
}
}
ret += iov[i].iov_len;
src_len -= iov[i].iov_len;
src_ptr += iov[i].iov_len;
if (0 == src_len) break;
}
return ret;
}
/*
* Match name to a message that has been received asynchronously (unexpected).
*
* @param name (IN) Name associated with peer or wildcard to match first posted recv.
* @return msg Matched message or NULL.
*
* Note - this routine requires the caller to be holding the module lock.
*/
mca_oob_tcp_msg_t* mca_oob_tcp_msg_match_recv(orte_process_name_t* name, int tag)
{
mca_oob_tcp_msg_t* msg;
for(msg = (mca_oob_tcp_msg_t*) opal_list_get_first(&mca_oob_tcp_component.tcp_msg_recv);
msg != (mca_oob_tcp_msg_t*) opal_list_get_end(&mca_oob_tcp_component.tcp_msg_recv);
msg = (mca_oob_tcp_msg_t*) opal_list_get_next(msg)) {
if(OPAL_EQUAL == opal_dss.compare(name, &msg->msg_hdr.msg_origin, ORTE_NAME)) {
if (tag == msg->msg_hdr.msg_tag) {
return msg;
}
}
}
return NULL;
}
/*
* Match name to a posted recv request.
*
* @param name (IN) Name associated with peer or wildcard to match first posted recv.
* @return msg Matched message or NULL.
*
* Note - this routine requires the caller to be holding the module lock.
*/
mca_oob_tcp_msg_t* mca_oob_tcp_msg_match_post(orte_process_name_t* name, int tag)
{
mca_oob_tcp_msg_t* msg;
for(msg = (mca_oob_tcp_msg_t*) opal_list_get_first(&mca_oob_tcp_component.tcp_msg_post);
msg != (mca_oob_tcp_msg_t*) opal_list_get_end(&mca_oob_tcp_component.tcp_msg_post);
msg = (mca_oob_tcp_msg_t*) opal_list_get_next(msg)) {
if(OPAL_EQUAL == opal_dss.compare(name, &msg->msg_peer, ORTE_NAME)) {
if (msg->msg_hdr.msg_tag == tag) {
if((msg->msg_flags & ORTE_RML_PERSISTENT) == 0) {
opal_list_remove_item(&mca_oob_tcp_component.tcp_msg_post, &msg->super.super);
}
return msg;
}
}
}
return NULL;
}
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