void *_fwd_tree_thread(void *arg)
{
fwd_tree_t *fwd_tree = (fwd_tree_t *)arg;
List ret_list = NULL;
char *name = NULL;
char *buf = NULL;
slurm_msg_t send_msg;
slurm_msg_t_init(&send_msg);
send_msg.msg_type = fwd_tree->orig_msg->msg_type;
send_msg.data = fwd_tree->orig_msg->data;
send_msg.protocol_version = fwd_tree->orig_msg->protocol_version;
/* repeat until we are sure the message was sent */
while ((name = hostlist_shift(fwd_tree->tree_hl))) {
if (slurm_conf_get_addr(name, &send_msg.address)
== SLURM_ERROR) {
error("fwd_tree_thread: can't find address for host "
"%s, check slurm.conf", name);
slurm_mutex_lock(fwd_tree->tree_mutex);
mark_as_failed_forward(&fwd_tree->ret_list, name,
SLURM_UNKNOWN_FORWARD_ADDR);
slurm_cond_signal(fwd_tree->notify);
slurm_mutex_unlock(fwd_tree->tree_mutex);
free(name);
continue;
}
send_msg.forward.timeout = fwd_tree->timeout;
if ((send_msg.forward.cnt = hostlist_count(fwd_tree->tree_hl))){
buf = hostlist_ranged_string_xmalloc(
fwd_tree->tree_hl);
send_msg.forward.nodelist = buf;
} else
send_msg.forward.nodelist = NULL;
if (send_msg.forward.nodelist && send_msg.forward.nodelist[0]) {
debug3("Tree sending to %s along with %s",
name, send_msg.forward.nodelist);
} else
debug3("Tree sending to %s", name);
ret_list = slurm_send_addr_recv_msgs(&send_msg, name,
fwd_tree->timeout);
xfree(send_msg.forward.nodelist);
if (ret_list) {
int ret_cnt = list_count(ret_list);
/* This is most common if a slurmd is running
an older version of Slurm than the
originator of the message.
*/
if ((ret_cnt <= send_msg.forward.cnt) &&
(errno != SLURM_COMMUNICATIONS_CONNECTION_ERROR)) {
error("fwd_tree_thread: %s failed to forward "
"the message, expecting %d ret got only "
"%d",
name, send_msg.forward.cnt + 1, ret_cnt);
if (ret_cnt > 1) { /* not likely */
ret_data_info_t *ret_data_info = NULL;
ListIterator itr =
list_iterator_create(ret_list);
while ((ret_data_info =
list_next(itr))) {
if (xstrcmp(ret_data_info->
node_name, name))
hostlist_delete_host(
fwd_tree->
tree_hl,
ret_data_info->
node_name);
}
list_iterator_destroy(itr);
}
}
slurm_mutex_lock(fwd_tree->tree_mutex);
list_transfer(fwd_tree->ret_list, ret_list);
slurm_cond_signal(fwd_tree->notify);
slurm_mutex_unlock(fwd_tree->tree_mutex);
FREE_NULL_LIST(ret_list);
/* try next node */
if (ret_cnt <= send_msg.forward.cnt) {
free(name);
/* Abandon tree. This way if all the
* nodes in the branch are down we
* don't have to time out for each
* node serially.
*/
_start_msg_tree_internal(
fwd_tree->tree_hl, NULL,
fwd_tree,
hostlist_count(fwd_tree->tree_hl));
continue;
}
} else {
/* This should never happen (when this was
* written slurm_send_addr_recv_msgs always
* returned a list */
error("fwd_tree_thread: no return list given from "
"slurm_send_addr_recv_msgs spawned for %s",
name);
slurm_mutex_lock(fwd_tree->tree_mutex);
mark_as_failed_forward(
&fwd_tree->ret_list, name,
SLURM_COMMUNICATIONS_CONNECTION_ERROR);
slurm_cond_signal(fwd_tree->notify);
slurm_mutex_unlock(fwd_tree->tree_mutex);
free(name);
continue;
}
free(name);
/* check for error and try again */
if (errno == SLURM_COMMUNICATIONS_CONNECTION_ERROR)
continue;
break;
}
_destroy_tree_fwd(fwd_tree);
return NULL;
}
void *_forward_thread(void *arg)
{
forward_msg_t *fwd_msg = (forward_msg_t *)arg;
forward_struct_t *fwd_struct = fwd_msg->fwd_struct;
Buf buffer = init_buf(BUF_SIZE); /* probably enough for header */
List ret_list = NULL;
int fd = -1;
ret_data_info_t *ret_data_info = NULL;
char *name = NULL;
hostlist_t hl = hostlist_create(fwd_msg->header.forward.nodelist);
slurm_addr_t addr;
char *buf = NULL;
int steps = 0;
int start_timeout = fwd_msg->timeout;
/* repeat until we are sure the message was sent */
while ((name = hostlist_shift(hl))) {
if (slurm_conf_get_addr(name, &addr) == SLURM_ERROR) {
error("forward_thread: can't find address for host "
"%s, check slurm.conf", name);
slurm_mutex_lock(&fwd_struct->forward_mutex);
mark_as_failed_forward(&fwd_struct->ret_list, name,
SLURM_UNKNOWN_FORWARD_ADDR);
free(name);
if (hostlist_count(hl) > 0) {
slurm_mutex_unlock(&fwd_struct->forward_mutex);
continue;
}
goto cleanup;
}
if ((fd = slurm_open_msg_conn(&addr)) < 0) {
error("forward_thread to %s: %m", name);
slurm_mutex_lock(&fwd_struct->forward_mutex);
mark_as_failed_forward(
&fwd_struct->ret_list, name,
SLURM_COMMUNICATIONS_CONNECTION_ERROR);
free(name);
if (hostlist_count(hl) > 0) {
slurm_mutex_unlock(&fwd_struct->forward_mutex);
/* Abandon tree. This way if all the
* nodes in the branch are down we
* don't have to time out for each
* node serially.
*/
_forward_msg_internal(hl, NULL, fwd_struct,
&fwd_msg->header, 0,
hostlist_count(hl));
continue;
}
goto cleanup;
}
buf = hostlist_ranged_string_xmalloc(hl);
xfree(fwd_msg->header.forward.nodelist);
fwd_msg->header.forward.nodelist = buf;
fwd_msg->header.forward.cnt = hostlist_count(hl);
#if 0
info("sending %d forwards (%s) to %s",
fwd_msg->header.forward.cnt,
fwd_msg->header.forward.nodelist, name);
#endif
if (fwd_msg->header.forward.nodelist[0]) {
debug3("forward: send to %s along with %s",
name, fwd_msg->header.forward.nodelist);
} else
debug3("forward: send to %s ", name);
pack_header(&fwd_msg->header, buffer);
/* add forward data to buffer */
if (remaining_buf(buffer) < fwd_struct->buf_len) {
int new_size = buffer->processed + fwd_struct->buf_len;
new_size += 1024; /* padded for paranoia */
xrealloc_nz(buffer->head, new_size);
buffer->size = new_size;
}
if (fwd_struct->buf_len) {
memcpy(&buffer->head[buffer->processed],
fwd_struct->buf, fwd_struct->buf_len);
buffer->processed += fwd_struct->buf_len;
}
/*
* forward message
*/
if (slurm_msg_sendto(fd,
get_buf_data(buffer),
get_buf_offset(buffer),
SLURM_PROTOCOL_NO_SEND_RECV_FLAGS ) < 0) {
error("forward_thread: slurm_msg_sendto: %m");
slurm_mutex_lock(&fwd_struct->forward_mutex);
mark_as_failed_forward(&fwd_struct->ret_list, name,
errno);
free(name);
if (hostlist_count(hl) > 0) {
free_buf(buffer);
buffer = init_buf(fwd_struct->buf_len);
slurm_mutex_unlock(&fwd_struct->forward_mutex);
slurm_close(fd);
fd = -1;
/* Abandon tree. This way if all the
* nodes in the branch are down we
* don't have to time out for each
* node serially.
*/
_forward_msg_internal(hl, NULL, fwd_struct,
&fwd_msg->header, 0,
hostlist_count(hl));
continue;
}
goto cleanup;
}
/* These messages don't have a return message, but if
* we got here things worked out so make note of the
* list of nodes as success.
*/
if ((fwd_msg->header.msg_type == REQUEST_SHUTDOWN) ||
(fwd_msg->header.msg_type == REQUEST_RECONFIGURE) ||
(fwd_msg->header.msg_type == REQUEST_REBOOT_NODES)) {
slurm_mutex_lock(&fwd_struct->forward_mutex);
ret_data_info = xmalloc(sizeof(ret_data_info_t));
list_push(fwd_struct->ret_list, ret_data_info);
ret_data_info->node_name = xstrdup(name);
free(name);
while ((name = hostlist_shift(hl))) {
ret_data_info =
xmalloc(sizeof(ret_data_info_t));
list_push(fwd_struct->ret_list, ret_data_info);
ret_data_info->node_name = xstrdup(name);
free(name);
}
goto cleanup;
}
if (fwd_msg->header.forward.cnt > 0) {
static int message_timeout = -1;
if (message_timeout < 0)
message_timeout =
slurm_get_msg_timeout() * 1000;
if (!fwd_msg->header.forward.tree_width)
fwd_msg->header.forward.tree_width =
slurm_get_tree_width();
steps = (fwd_msg->header.forward.cnt+1) /
fwd_msg->header.forward.tree_width;
fwd_msg->timeout = (message_timeout*steps);
/* info("got %d * %d = %d", message_timeout, */
/* steps, fwd_msg->timeout); */
steps++;
fwd_msg->timeout += (start_timeout*steps);
/* info("now + %d*%d = %d", start_timeout, */
/* steps, fwd_msg->timeout); */
}
ret_list = slurm_receive_msgs(fd, steps, fwd_msg->timeout);
/* info("sent %d forwards got %d back", */
/* fwd_msg->header.forward.cnt, list_count(ret_list)); */
if (!ret_list || (fwd_msg->header.forward.cnt != 0
&& list_count(ret_list) <= 1)) {
slurm_mutex_lock(&fwd_struct->forward_mutex);
mark_as_failed_forward(&fwd_struct->ret_list, name,
errno);
free(name);
FREE_NULL_LIST(ret_list);
if (hostlist_count(hl) > 0) {
free_buf(buffer);
buffer = init_buf(fwd_struct->buf_len);
slurm_mutex_unlock(&fwd_struct->forward_mutex);
slurm_close(fd);
fd = -1;
continue;
}
goto cleanup;
} else if ((fwd_msg->header.forward.cnt+1)
!= list_count(ret_list)) {
/* this should never be called since the above
should catch the failed forwards and pipe
them back down, but this is here so we
never have to worry about a locked
mutex */
ListIterator itr = NULL;
char *tmp = NULL;
int first_node_found = 0;
hostlist_iterator_t host_itr
= hostlist_iterator_create(hl);
error("We shouldn't be here. We forwarded to %d "
"but only got %d back",
(fwd_msg->header.forward.cnt+1),
list_count(ret_list));
while ((tmp = hostlist_next(host_itr))) {
int node_found = 0;
itr = list_iterator_create(ret_list);
while ((ret_data_info = list_next(itr))) {
if (!ret_data_info->node_name) {
first_node_found = 1;
ret_data_info->node_name =
xstrdup(name);
}
if (!xstrcmp(tmp,
ret_data_info->node_name)) {
node_found = 1;
break;
}
}
list_iterator_destroy(itr);
if (!node_found) {
mark_as_failed_forward(
&fwd_struct->ret_list,
tmp,
SLURM_COMMUNICATIONS_CONNECTION_ERROR);
}
free(tmp);
}
hostlist_iterator_destroy(host_itr);
if (!first_node_found) {
mark_as_failed_forward(
&fwd_struct->ret_list,
name,
SLURM_COMMUNICATIONS_CONNECTION_ERROR);
}
}
break;
}
slurm_mutex_lock(&fwd_struct->forward_mutex);
if (ret_list) {
while ((ret_data_info = list_pop(ret_list)) != NULL) {
if (!ret_data_info->node_name) {
ret_data_info->node_name = xstrdup(name);
}
list_push(fwd_struct->ret_list, ret_data_info);
debug3("got response from %s",
ret_data_info->node_name);
}
FREE_NULL_LIST(ret_list);
}
free(name);
cleanup:
if ((fd >= 0) && slurm_close(fd) < 0)
error ("close(%d): %m", fd);
hostlist_destroy(hl);
destroy_forward(&fwd_msg->header.forward);
free_buf(buffer);
slurm_cond_signal(&fwd_struct->notify);
slurm_mutex_unlock(&fwd_struct->forward_mutex);
xfree(fwd_msg);
return (NULL);
}
void *_fwd_tree_thread(void *arg)
{
fwd_tree_t *fwd_tree = (fwd_tree_t *)arg;
List ret_list = NULL;
char *name = NULL;
char *buf = NULL;
slurm_msg_t send_msg;
slurm_msg_t_init(&send_msg);
send_msg.msg_type = fwd_tree->orig_msg->msg_type;
send_msg.data = fwd_tree->orig_msg->data;
/* repeat until we are sure the message was sent */
while ((name = hostlist_shift(fwd_tree->tree_hl))) {
if (slurm_conf_get_addr(name, &send_msg.address)
== SLURM_ERROR) {
error("fwd_tree_thread: can't find address for host "
"%s, check slurm.conf", name);
slurm_mutex_lock(fwd_tree->tree_mutex);
mark_as_failed_forward(&fwd_tree->ret_list, name,
SLURM_UNKNOWN_FORWARD_ADDR);
pthread_cond_signal(fwd_tree->notify);
slurm_mutex_unlock(fwd_tree->tree_mutex);
free(name);
continue;
}
send_msg.forward.timeout = fwd_tree->timeout;
if((send_msg.forward.cnt = hostlist_count(fwd_tree->tree_hl))) {
buf = hostlist_ranged_string_xmalloc(
fwd_tree->tree_hl);
send_msg.forward.nodelist = buf;
} else
send_msg.forward.nodelist = NULL;
if (send_msg.forward.nodelist && send_msg.forward.nodelist[0]) {
debug3("Tree sending to %s along with %s",
name, send_msg.forward.nodelist);
} else
debug3("Tree sending to %s", name);
ret_list = slurm_send_addr_recv_msgs(&send_msg, name,
fwd_tree->timeout);
xfree(send_msg.forward.nodelist);
if(ret_list) {
slurm_mutex_lock(fwd_tree->tree_mutex);
list_transfer(fwd_tree->ret_list, ret_list);
pthread_cond_signal(fwd_tree->notify);
slurm_mutex_unlock(fwd_tree->tree_mutex);
list_destroy(ret_list);
} else {
/* This should never happen (when this was
written slurm_send_addr_recv_msgs always
returned a list */
error("fwd_tree_thread: no return list given from "
"slurm_send_addr_recv_msgs spawned for %s",
name);
slurm_mutex_lock(fwd_tree->tree_mutex);
mark_as_failed_forward(
&fwd_tree->ret_list, name,
SLURM_COMMUNICATIONS_CONNECTION_ERROR);
pthread_cond_signal(fwd_tree->notify);
slurm_mutex_unlock(fwd_tree->tree_mutex);
free(name);
continue;
}
free(name);
/* check for error and try again */
if(errno == SLURM_COMMUNICATIONS_CONNECTION_ERROR)
continue;
break;
}
_destroy_tree_fwd(fwd_tree);
return NULL;
}
