Ondřej Kuzník
68b163fca9
Introduce mutex checks
...
Switched off unless thread debugging is on, but still useful for static
analysis.
2020-11-17 17:58:15 +00:00
Ondřej Kuzník
62a806b243
Thread error checking
2020-11-17 17:58:15 +00:00
Ondřej Kuzník
58d66a3946
Fix race between unlinking a client and processing incoming data
2020-11-17 17:58:15 +00:00
Ondřej Kuzník
dc1961cb15
Epoch based memory reclamation
...
Similar to the algorithm presented in
https://www.cl.cam.ac.uk/techreports/UCAM-CL-TR-579.pdf
Not completely lock-free at the moment. Also the problems with epoch
based memory reclamation are still present - a thread actively observing
an epoch getting stuck will prevent LloadConnections and LloadOperations
being freed, potentially running out of memory.
2020-11-17 17:58:15 +00:00
Ondřej Kuzník
81ead4a5f4
Fix races with backend_retry
2020-11-17 17:58:15 +00:00
Ondřej Kuzník
b4f43ed8e1
Refactor backend reset
...
Reuse the connection walking facility in timeout management.
2020-11-17 17:58:15 +00:00
Ondřej Kuzník
638f8a2cbc
Tighten checks on retry management
2020-11-17 17:58:15 +00:00
Ondřej Kuzník
2a813cb06d
Clean up backend_retry and its callers.
2020-11-17 17:58:15 +00:00
Ondřej Kuzník
241f65b9e0
Fix a race in managing b_dns_req
2020-11-17 17:58:15 +00:00
Ondřej Kuzník
db3961f489
Record connect task to allow canceling it
2020-11-17 17:58:15 +00:00
Ondřej Kuzník
6b10c2988e
Record pending DNS resolution to be able to cancel
2020-11-17 17:58:15 +00:00
Ondřej Kuzník
07401e5829
Implement runtime monitor (un)registration
...
Unregistration is a hack and we shoould either make the subsystems into
an entry (if monitor allows subentry generation) or implement subsystem
unregistration in back-monitor.
2020-11-17 17:58:15 +00:00
Ondřej Kuzník
4c355deb3d
Record the backend name
2020-11-17 17:58:14 +00:00
Ondřej Kuzník
bf9f99dd88
Split backend destruction from resetting it
2020-11-17 17:58:14 +00:00
Nadezhda Ivanova
2d33032504
Lload cn=monitor initial implementation
2020-11-17 17:58:14 +00:00
Ondřej Kuzník
66f06f3fa9
Initial extension to upstream selection
2020-11-17 17:58:14 +00:00
Nadezhda Ivanova
8bc7650a7c
Clean ups and renames to coexist with slapd
2020-11-17 17:58:14 +00:00
Ondřej Kuzník
5cbd30ded9
Log timed out connections more clearly
2020-11-17 17:58:14 +00:00
Ondřej Kuzník
0cfd4fca4d
Make timeouts common and redo connection read timeouts
2020-11-17 17:58:14 +00:00
Ondřej Kuzník
ccf75c96c4
Update write timeout to timeval
2020-11-17 17:58:14 +00:00
Ondřej Kuzník
b801ca17cb
Rename macros and symbols to lloadd
2020-11-17 17:58:14 +00:00
Ondřej Kuzník
c60ef73984
Rework upstream conn setup
2020-11-17 17:58:13 +00:00
Ondřej Kuzník
8d93e0baa0
Unify connection locking and I/O
2020-11-17 17:55:46 +00:00
Ondřej Kuzník
0ad91e0546
Do not back off until we get a failure
2020-11-17 17:55:46 +00:00
Ondřej Kuzník
baf1feab82
Handle asynchronous connect properly
2020-11-17 17:55:46 +00:00
Ondřej Kuzník
05f2ac2583
Unify logging output
2020-11-17 17:55:46 +00:00
Ondřej Kuzník
6ee21f1181
Split bind configuration from backends
2020-11-17 17:55:46 +00:00
Ondřej Kuzník
5b1ad43178
Handle upstream connection shutdown properly
2020-11-17 17:55:46 +00:00
Ondřej Kuzník
1082486874
Only enable verifycredentials if libldap does
2020-11-17 17:55:46 +00:00
Ondřej Kuzník
e0b8bd5fc9
Free all pending operations on shutdown
2020-11-17 17:55:46 +00:00
Ondřej Kuzník
53015aa4cb
Round robin for backends.
...
Several threads calling backend_select might reset current_backend to a
different place, there are two options to deal with that:
- just let the last rotation win (the current approach)
- detect whether first == current_backend and only replace then
Not sure which one is more useful, going with the simpler.
2020-11-17 17:55:46 +00:00
Ondřej Kuzník
e65cd38787
Round-robin for upstream connections
2020-11-17 17:55:46 +00:00
Ondřej Kuzník
58a880bc7b
Convert backend and upstream management to use CIRCLEQ.
...
This alone doesn't make the server do a round robin.
2020-11-17 17:55:46 +00:00
Ondřej Kuzník
ea7e40b8e7
Shutdown handling
2020-11-17 17:55:46 +00:00
Ondřej Kuzník
fba4bed6e2
connection reference counting
2020-11-17 17:55:46 +00:00
Ondřej Kuzník
6c8b2acce0
Do not leak addrinfos
2020-11-17 17:55:46 +00:00
Ondřej Kuzník
8f5bae921e
Pending operation tracking and limiting
2020-11-17 17:55:46 +00:00
Ondřej Kuzník
8b1703d2a7
Implement backend retry timeouts
2020-11-17 17:55:46 +00:00
Ondřej Kuzník
463bcdd2c4
Update backend progress tracking
2020-11-17 17:55:46 +00:00
Ondřej Kuzník
673513a017
Maintain the configured amount of connections per backend
2020-11-17 17:55:46 +00:00
Ondřej Kuzník
639c5912f5
Client authentication
2020-11-17 17:55:46 +00:00
Ondřej Kuzník
2fbc8ca473
Rename backend mutex
2020-11-17 17:42:44 +00:00
Ondřej Kuzník
5bdb4e1570
Update maximum number or parameters for backend
2020-11-17 17:42:44 +00:00
Ondřej Kuzník
79f7e79f15
Set up connections in the worker threads
2020-11-17 17:15:40 +00:00
Ondřej Kuzník
bf66b48fe3
Upstream connection setup
2020-11-17 17:15:40 +00:00
