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Author SHA1 Message Date
Gareth Rees
b60a1636fc Fix the mortality of the world to avoid runaway feedback between the dynamic criterion and the mortality of the arena's top generation as described in <https://info.ravenbrook.com/mail/2018/07/13/19-53-23/0/>. 
Copied from Perforce
 Change: 194648
 2018-07-13 20:56:08 +01:00
Gareth Rees
6684c5d10f Catch-up merge from master sources at changelevel 194628. 
Copied from Perforce
 Change: 194631
 2018-07-13 11:28:36 +01:00
Gareth Rees
7d956be9ce Must get the new size of the generation before condemning it (afterwards, the condemned memory is accounted as "old", not "new"). 
Copied from Perforce
 Change: 194628
 2018-07-13 10:55:30 +01:00
Gareth Rees
f65c8fdfdb Update common assertions in the manual. 
Convert capacity to bytes once on initialization rather than every time it is used.

Copied from Perforce
 Change: 194612
 2018-07-11 21:27:47 +01:00
Gareth Rees
c3fd9d5ba7 Represent the set of generations condemned for a trace. 
Eliminate duplication between policyCondemnChain and traceCondemnAll.
Compute better mortality estimate for collection of the world.

Copied from Perforce
 Change: 194611
 2018-07-11 21:14:43 +01:00
Gareth Rees
73734325d5 Catch-up merge from branch/2016-04-12/job004000 to branch/2016-04-13/mortality. 
Copied from Perforce
 Change: 191513
 ServerID: perforce.ravenbrook.com
 2016-04-21 18:20:54 +01:00
Gareth Rees
613f001ec5 Catch-up merge from master sources to branch/2016-04-12/job004000. 
Copied from Perforce
 Change: 191512
 ServerID: perforce.ravenbrook.com
 2016-04-21 18:03:23 +01:00
Richard Brooksby
4be15a5b0b Catch-up merge from master sources to branch/2016-04-08/protidying. 
Copied from Perforce
 Change: 191471
 ServerID: perforce.ravenbrook.com
 2016-04-21 14:46:10 +01:00
Gareth Rees
8868a011a7 Catch-up merge from master sources to branch/2016-04-12/job004000. 
Copied from Perforce
 Change: 191429
 ServerID: perforce.ravenbrook.com
 2016-04-21 10:52:18 +01:00
Gareth Rees
c1aeb1f67a Ensure that at most one collection of the world can be started in a call to arenapoll. this avoids a loop if the live set is large enough to provoke the "dynamic criterion". 
Copied from Perforce
 Change: 191274
 ServerID: perforce.ravenbrook.com
 2016-04-19 18:17:09 +01:00
Gareth Rees
7b1f72a679 Top generation mortality estimate is no longer unjustifiable: it will now converge on the correct value. 
No need to check topGen.mortality -- this is checked by LocusCheck.

Copied from Perforce
 Change: 191085
 ServerID: perforce.ravenbrook.com
 2016-04-13 15:52:08 +01:00
Gareth Rees
d40145c046 Maintain a moving average of the mortality of each generation. 
Copied from Perforce
 Change: 191081
 ServerID: perforce.ravenbrook.com
 2016-04-13 15:19:50 +01:00
Gareth Rees
749226e23a Handle failed traceaddwhite in policycondemnchain and arenarootswalk. 
Copied from Perforce
 Change: 191040
 ServerID: perforce.ravenbrook.com
 2016-04-12 20:58:33 +01:00
Gareth Rees
c33b1f49e8 Condemn only the segments in the selected generations (not segments that happen to share a zone with any segment ever allocated in the generation). 
Copied from Perforce
 Change: 191034
 ServerID: perforce.ravenbrook.com
 2016-04-12 19:42:03 +01:00
Richard Brooksby
cf29dcc98d Making arenas properly inherit from instances, and converting remaining method calls to use the method macro, while noting uses which are inside-out. 
Copied from Perforce
 Change: 190856
 ServerID: perforce.ravenbrook.com
 2016-04-10 14:00:55 +01:00
Richard Brooksby
d4a055f70b Merging branch/2016-03-12/pause into the master sources. 
Copied from Perforce
 Change: 190053
 ServerID: perforce.ravenbrook.com
 2016-03-15 06:31:08 +00:00
Richard Brooksby
78aa13019d Don't return to the mutator if there's an emergency. 
Clarifying "more time" and what we do if there's isn't.

Copied from Perforce
 Change: 190050
 ServerID: perforce.ravenbrook.com
 2016-03-15 06:25:53 +00:00
Gareth Rees
e034e7aeea Address points made by rb in review <https://info.ravenbrook.com/mail/2016/03/14/18-48-19/0/> 
Copied from Perforce
 Change: 190031
 ServerID: perforce.ravenbrook.com
 2016-03-14 20:10:14 +00:00
Gareth Rees
d08cfa1892 Don't forget to multiply by clockspersec! 
Copied from Perforce
 Change: 189927
 ServerID: perforce.ravenbrook.com
 2016-03-12 22:56:52 +00:00
Gareth Rees
167408b7e0 Implement pause time control. 
Copied from Perforce
 Change: 189921
 ServerID: perforce.ravenbrook.com
 2016-03-12 22:08:26 +00:00
Richard Brooksby
275770ed43 Catch-up merge from master sources to branch/2015-08-25/tradeoff. 
Copied from Perforce
 Change: 189891
 ServerID: perforce.ravenbrook.com
 2016-03-12 15:13:15 +00:00
Gareth Rees
973f5369e1 Rename chain.h to locus.h, for consistency with other modules, where the interface has the same name as the implemention. 
Copied from Perforce
 Change: 189682
 ServerID: perforce.ravenbrook.com
 2016-03-06 18:56:32 +00:00
Richard Brooksby
a509df4c2b Fix typo found by gdr. 
Copied from Perforce
 Change: 189376
 ServerID: perforce.ravenbrook.com
 2016-02-28 20:12:12 +00:00
Richard Brooksby
13eab92d00 Try later allocation plans if growing the arena fails. 
Copied from Perforce
 Change: 189363
 ServerID: perforce.ravenbrook.com
 2016-02-26 19:59:55 +00:00
Richard Brooksby
ef17ba047b Purge spare committed memory when growing the arena fails due to the commit limit. 
Copied from Perforce
 Change: 189362
 ServerID: perforce.ravenbrook.com
 2016-02-26 19:59:55 +00:00
Richard Brooksby
12f778bf11 Catch-up merge from branch/2015-08-11/policy. 
Copied from Perforce
 Change: 189339
 ServerID: perforce.ravenbrook.com
 2016-02-25 23:08:49 +00:00
Nick Barnes
75aab3b943 Remove redundant assignment. 
Copied from Perforce
 Change: 188292
 ServerID: perforce.ravenbrook.com
 2015-09-09 15:20:01 +01:00
Gareth Rees
2435b9949a Can't assume that the caller will give us any available time. 
Copied from Perforce
 Change: 188259
 ServerID: perforce.ravenbrook.com
 2015-09-04 22:35:03 +01:00
Gareth Rees
3ef063c80f Avoid "iso c90 forbids mixed declarations and code" error from gcc. 
Copied from Perforce
 Change: 188257
 ServerID: perforce.ravenbrook.com
 2015-09-04 22:28:40 +01:00
Gareth Rees
aa6a027c68 Catch-up merge from branch/2015-08-11/policy to branch/2015-08-25/tradeoff. 
Copied from Perforce
 Change: 188250
 ServerID: perforce.ravenbrook.com
 2015-09-04 19:13:28 +01:00
Gareth Rees
0a927608dc Policycollectiontime is now local to policy.c. 
Improve comment for policyCondemnChain (document the mortalityReturn parameter to; fix design reference).

Copied from Perforce
 Change: 188240
 ServerID: perforce.ravenbrook.com
 2015-09-04 16:02:46 +01:00
Gareth Rees
2514663693 Move policy for mps_arena_step to policy module. 
Copied from Perforce
 Change: 188238
 ServerID: perforce.ravenbrook.com
 2015-09-04 15:25:37 +01:00
Gareth Rees
7bf1664f5e Separate the values "more work to do?" and "amount of work done" in tracepoll. previously, the code used "amount of work done > 0" when it needed "more work to do?" but that's not right, because on the last two calls to traceadvance, no "work" is done (because reclaim work is not measured), but there may still be more work to do. 
Copied from Perforce
 Change: 188218
 ServerID: perforce.ravenbrook.com
 2015-09-03 15:51:37 +01:00
Gareth Rees
851e35bcff Move the arenaemergency test up to policypollagain. 
Copied from Perforce
 Change: 188217
 ServerID: perforce.ravenbrook.com
 2015-09-03 15:39:39 +01:00
Gareth Rees
ef62affc6d Move the clearing of the emergency flag down into tracedestroy{init,finish}. 
Copied from Perforce
 Change: 188216
 ServerID: perforce.ravenbrook.com
 2015-09-03 15:35:38 +01:00
Gareth Rees
b4db3bd09f Introduce new type work representing a measure of work done by the collector. use this systematically to make the code clearer. 
Copied from Perforce
 Change: 188210
 ServerID: perforce.ravenbrook.com
 2015-09-03 13:01:55 +01:00
Gareth Rees
3b0e0c2aa5 Don't start a trace unless there's work to do. 
Copied from Perforce
 Change: 188204
 ServerID: perforce.ravenbrook.com
 2015-09-02 21:55:24 +01:00
Gareth Rees
b0e9c66094 Use sizeisarenagrains macro. 
Copied from Perforce
 Change: 188172
 ServerID: perforce.ravenbrook.com
 2015-08-25 15:03:35 +01:00
Gareth Rees
517ffb9344 Condition >= 1.0 is needed to ensure division can't overflow. 
Copied from Perforce
 Change: 188170
 ServerID: perforce.ravenbrook.com
 2015-08-25 13:50:19 +01:00
Gareth Rees
9dd49aa48e New functions policypoll and policypollagain. 
Update design.strategy.

Copied from Perforce
 Change: 188165
 ServerID: perforce.ravenbrook.com
 2015-08-25 13:27:17 +01:00
Gareth Rees
d506458eea New function policycollectiontime estimates the time needed to collect the arena. mysterious constants are given names and moved to config.h. 
Copied from Perforce
 Change: 188160
 ServerID: perforce.ravenbrook.com
 2015-08-21 15:27:14 +01:00
Gareth Rees
b41d6be0e4 New function policycondemnchain. 
Copied from Perforce
 Change: 188156
 ServerID: perforce.ravenbrook.com
 2015-08-21 11:01:00 +01:00
Gareth Rees
eee7ccb60c New function policystarttrace decides whether to start a trace. 
Copied from Perforce
 Change: 188154
 ServerID: perforce.ravenbrook.com
 2015-08-20 16:57:33 +01:00
Gareth Rees
b3056139c8 New module policy.c. 
Copied from Perforce
 Change: 188152
 ServerID: perforce.ravenbrook.com
 2015-08-19 15:03:47 +01:00