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Better dynamic send queue handling for large hubs at the cost of more memory use.

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Signed-off-by: Jan Vidar Krey <janvidar@extatic.org>
This commit is contained in:
Jan Vidar Krey 2009-03-12 16:00:56 +01:00
parent 6cf6e38a60
commit 18b0dc713f
2 changed files with 32 additions and 12 deletions
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1
ChangeLog
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@ -3,6 +3,7 @@
- Better "!stats"; can display peak and current bandwidth usage.
- Added "+myip" command.
- Ensure super users and hub owners also have the operator flag set.
- Better dynamic send queue handling for large hubs at the cost of more memory use.
0.2.5-3487:

43
src/route.c
View File

@ -80,6 +80,26 @@ static void queue_command(struct user* user, struct adc_message* msg__, int offs
}
// #define ALWAYS_QUEUE_MESSAGES
static size_t get_max_send_queue(struct hub_info* hub)
{
return MAX(hub->config->max_send_buffer, (hub->config->max_recv_buffer * hub_get_user_count(hub)));
}
/*
* @return 1 if send queue is OK.
* -1 if send queue is overflowed
* 0 if soft send queue is overflowed (not implemented at the moment)
*/
static int check_send_queue(struct user* user, struct adc_message* msg)
{
if (user_flag_get(user, flag_user_list))
return 1;
if ((user->send_queue_size + msg->length) > get_max_send_queue(user->hub))
return -1;
return 1;
}
int route_to_user(struct user* user, struct adc_message* msg)
{
@ -118,24 +138,23 @@ int route_to_user(struct user* user, struct adc_message* msg)
else
#endif
{
if (!user_flag_get(user, flag_user_list) && user->send_queue_size + msg->length > user->hub->config->max_send_buffer && msg->priority >= 0)
ret = check_send_queue(user, msg);
if (ret == -1)
{
/* User is not able to swallow the data, let's cut our losses and disconnect. */
user_disconnect(user, quit_send_queue);
return 0;
}
else if (ret == 1)
{
/* queue command */
queue_command(user, msg, 0);
if (user->ev_write)
event_add(user->ev_write, NULL);
}
else
{
if (user->send_queue_size + msg->length > user->hub->config->max_send_buffer_soft && msg->priority >= 0)
{
/* Don't queue this message if it is low priority! */
}
else
{
queue_command(user, msg, 0);
if (user->ev_write)
event_add(user->ev_write, NULL);
}
/* do not queue command as our soft-limits are exceeded */
}
}