tree 1d651fabdf111435587d4ea4dd92acb336845b61
parent 000375f0bba75dd68cd50e13dd23db16f33ead63
author willy tarreau <willy@wtap.(none)> 1147390148 +0200
committer willy tarreau <willy@wtap.(none)> 1147424757 +0200

[CRITICAL] fix a crashing trouble with the maxconn limits.

If a task was queued on a server and if this task was alone and aborted
before any other task did anything, there were situations by which it
might have queued itself in the run queue, then exited, and the upcoming
tv_queue() associated to the run loop would have resurrected it siently,
causing crashes in task_queue.

The new principle consists in assigning a task to every server that
needs a connection limit. This task will be woken up every time we
suspect we might leave some place to queue a task. The server's task
itself will only have to run across its queue and run the available
number of tasks.