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164 commits

Author SHA1 Message Date
Gareth Rees
0fcb0ecf90 Introduce a count of the "system" pools (that is, those remaining when arenadestroy is called), so that arena classes can add new ones. 
Copied from Perforce
 Change: 194812
 2018-07-31 13:35:22 +01:00
Gareth Rees
652ce0dae8 Fix indentation in globalsdescribe. 
Copied from Perforce
 Change: 194708
 2018-07-23 10:38:47 +01:00
Gareth Rees
353768d313 Fix issues identified in review by gdr <https://info.ravenbrook.com/mail/2018/07/07/15-54-49/0/> 
Copied from Perforce
 Change: 194494
 2018-07-07 19:23:58 +01:00
Gareth Rees
e5b175a961 Catch-up merge from master sources at changelevel 194484 to branch/2014-10-26/sc. 
Copied from Perforce
 Change: 194487
 2018-07-06 21:42:35 +01:00
Gareth Rees
3366ef1bc2 Catch-up merge from master sources at changelevel 194449 to branch/2018-06-18/mrgseg. 
Copied from Perforce
 Change: 194452
 2018-07-05 16:22:24 +01:00
Gareth Rees
1c80c8f387 Catch-up merge from master sources at changelevel 194314 to branch/2016-03-01/mvff-control. 
Copied from Perforce
 Change: 194323
 2018-06-29 14:28:33 +01:00
Gareth Rees
409bc1910b Catch-up merge from the master sources at changelevel 194194 to branch/2017-03-04/seg-methods. 
Copied from Perforce
 Change: 194267
 2018-06-28 13:52:36 +01:00
Gareth Rees
e93949aeef Refactor arenapeekseg so that it maintains the mps invariants by scanning the segment if necessary. arenaread is now a thin wrapper around arenapeekseg. new function arenawrite is now the corresponding wrapper around arenapokeseg. 
MRG reference segments inherit from GCSeg (not MutatorSeg) and so don't have hardware barriers. Instead, the code implements software barriers by always using ArenaRead and ArenaWrite.

Copied from Perforce
 Change: 193990
 2018-06-19 16:25:52 +01:00
Gareth Rees
687f5e0294 Fix issues identified in review by apt. 
Copied from Perforce
 Change: 193982
 2018-06-19 14:51:56 +01:00
Gareth Rees
5324b1a2dd Catch-up merge from master sources at change 193831 to branch/2017-03-04/seg-methods. 
Copied from Perforce
 Change: 193836
 2018-06-15 13:46:23 +01:00
Gareth Rees
0662e96899 Refactor atfork code to improve separation of concerns. 
Copied from Perforce
 Change: 193806
 2018-06-15 10:58:33 +01:00
Gareth Rees
a865019b13 Update design history. restore accidentally removed check. 
Copied from Perforce
 Change: 193787
 2018-06-14 17:55:03 +01:00
Gareth Rees
61e24c399a Take locks before fork(), release them in the parent and reinitialize them in the child. 
Add forktest target to the Xcode project.
Write design for fork safety and cross-reference from the code.
Update release notes.

Copied from Perforce
 Change: 193760
 2018-06-14 16:25:08 +01:00
Gareth Rees
2ccdd80953 Extend forktest so that it does allocation before the fork and collection afterwards; this ensures that we hit the read barrier and thus exercise the exception handling. 
After forking in the child, re-create exception port and exception thread, and re-register the (only) thread with that port.

Copied from Perforce
 Change: 193755
 2018-06-14 12:54:35 +01:00
Gareth Rees
47fc093662 Add fork test case (fails on os x if pthread_atfork is not called). 
pthread_atfork handlers on OS X: in the child, update the mach port for the forking thread and move all other threads to the dead ring.

Copied from Perforce
 Change: 193746
 2018-06-13 17:09:07 +01:00
Gareth Rees
4c9f14729f Move access method from pool class to segment class. 
Copied from Perforce
 Change: 193039
 ServerID: perforce.ravenbrook.com
 2017-03-30 09:55:37 +01:00
Gareth Rees
3389ec396f Add "cold end" and "hot end" to the glossary index. 
Copied from Perforce
 Change: 192660
 ServerID: perforce.ravenbrook.com
 2016-10-20 13:52:30 +01:00
Gareth Rees
d83934de69 Remove return statements that have no effect. 
Copied from Perforce
 Change: 192529
 ServerID: perforce.ravenbrook.com
 2016-10-13 15:17:50 +01:00
Gareth Rees
437bf9c6a4 Rename mutatorfaultcontext to mutatorcontext because this data structure is not only used to store the context of a fault, but also to store the context of a thread that has been suspended. 
Copied from Perforce
 Change: 192523
 ServerID: perforce.ravenbrook.com
 2016-10-13 14:23:39 +01:00
Gareth Rees
34be22b383 Remove undocumented global mps_exception_info. now that the mps is open source, there is no difficulty in debugging the mutator context. 
Copied from Perforce
 Change: 192518
 ServerID: perforce.ravenbrook.com
 2016-10-13 13:45:31 +01:00
Gareth Rees
62be09b5e9 Revert incorrect change to globalspreparetodestroy (see change 192365) that made the mps assert when destroying an arena with uncollected finalization messages. 
Copied from Perforce
 Change: 192473
 ServerID: perforce.ravenbrook.com
 2016-09-27 11:57:19 +01:00
Gareth Rees
cb0c6eabef Catch-up merge from custom/cet/branch/2016-09-13/job004006 to branch/2016-09-06/job004006. 
Copied from Perforce
 Change: 192351
 ServerID: perforce.ravenbrook.com
 2016-09-13 15:33:31 +01:00
Gareth Rees
d56741e1ea In order to be able to test mps_arena_busy in all build configurations, we must always take and release the arena lock, even in the single-threaded case. we gain some additional checking by doing this, at low cost (since in this build configuration the locks are generic and so just increment/decrement a count of claims). 
In the CONFIG_POLL_NONE we configuration, we would still like to check that no traces are busy when leaving the arena, but since we now call ArenaLeave in this configurations, move the assertion to ShieldLeave.
In ArenaDestroy, call ArenaLeave, don't just release the lock.

Copied from Perforce
 Change: 192267
 ServerID: perforce.ravenbrook.com
 2016-09-09 13:01:25 +01:00
Gareth Rees
01c13bf1b5 New functions mps_arena_busy and mps_arena_postmortem, plus test coverage. 
Copied from Perforce
 Change: 192247
 ServerID: perforce.ravenbrook.com
 2016-09-08 13:55:43 +01:00
Gareth Rees
c737a08bc2 Fix assertion text in the manual. 
Place a cross-reference by each assertion the appears in the manual, to assist in keeping the manual up to date.

Copied from Perforce
 Change: 192097
 ServerID: perforce.ravenbrook.com
 2016-09-02 14:11:08 +01:00
Gareth Rees
0297b380b9 Clear the emergency before removing the trace from busytraces, to avoid violating <code/global.c#emergency.invariant>. 
Copied from Perforce
 Change: 191774
 ServerID: perforce.ravenbrook.com
 2016-05-02 13:06:07 +01:00
Richard Brooksby
546e082125 Removing bogus arenatrivdescribe and turning arenadescribe the right way in. 
Copied from Perforce
 Change: 191480
 ServerID: perforce.ravenbrook.com
 2016-04-21 15:27:41 +01:00
Richard Brooksby
02a8064a07 Moving location dependency history into its own structure to reduce arenastruct bloat. 
Copied from Perforce
 Change: 191417
 ServerID: perforce.ravenbrook.com
 2016-04-21 09:05:34 +01:00
Gareth Rees
0d0eb93f01 Merge branch/2016-04-19/job004011. 
Copied from Perforce
 Change: 191374
 ServerID: perforce.ravenbrook.com
 2016-04-20 16:00:43 +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
aabe4992eb Compile out statistic declarations in non-statistical varieties (at the cost of some syntax checking). 
Add some missing STATISTIC guards where statistics are used.
Add design documentation.
Avoid unnecessary distinction between STATISTIC and STATISTIC_STAT (both result in statements).

Copied from Perforce
 Change: 191178
 ServerID: perforce.ravenbrook.com
 2016-04-16 12:07:10 +01:00
Richard Brooksby
5c98fb1b92 Catch-up merge from master sources to branch/2016-03-01/mvff-control. 
Copied from Perforce
 Change: 190549
 ServerID: perforce.ravenbrook.com
 2016-03-30 16:17:37 +01:00
Richard Brooksby
f501f73eb9 Catch-up merge from master sources to branch/2014-10-26/sc. 
Copied from Perforce
 Change: 190483
 ServerID: perforce.ravenbrook.com
 2016-03-27 21:28:39 +01:00
Richard Brooksby
247396690d Catch-up merge from master sources to branch/2016-03-11/shield-coalesce. 
Copied from Perforce
 Change: 190373
 ServerID: perforce.ravenbrook.com
 2016-03-24 11:08:24 +00:00
Richard Brooksby
428e8bae92 Fixing build errors on windows (w3i6mv). 
tagtest was missing from makefiles.
Implicit conversion warning from Clock to double.

Copied from Perforce
 Change: 190372
 ServerID: perforce.ravenbrook.com
 2016-03-24 11:04:58 +00:00
Richard Brooksby
a03174304d Tearing down shield correctly. 
Copied from Perforce
 Change: 190225
 ServerID: perforce.ravenbrook.com
 2016-03-20 01:01:54 +00:00
Richard Brooksby
e09dbaab0f Promoting shield to first class structure. 
Copied from Perforce
 Change: 190219
 ServerID: perforce.ravenbrook.com
 2016-03-20 00:32:43 +00:00
Richard Brooksby
ff69c9af04 Separating flag for segment in shield cache from depth, clarifying code and optimising segfree somewhat. 
Copied from Perforce
 Change: 190194
 ServerID: perforce.ravenbrook.com
 2016-03-19 13:42:09 +00:00
Richard Brooksby
9172773f9c Updating shield design and actually checking invariants in code. 
Copied from Perforce
 Change: 190192
 ServerID: perforce.ravenbrook.com
 2016-03-19 10:15:10 +00:00
Richard Brooksby
641cdc164c Catch-up merge from master sources to branch/2016-03-11/shield-coalesce. 
Copied from Perforce
 Change: 190150
 ServerID: perforce.ravenbrook.com
 2016-03-17 13:53:40 +00:00
Richard Brooksby
662a1b1b9b Allocate the shield cache. also improve commentary quite a bit. 
Copied from Perforce
 Change: 190147
 ServerID: perforce.ravenbrook.com
 2016-03-17 13:37:40 +00:00
Richard Brooksby
3de3827d47 Catch-up merge from master sources to branch/2014-10-26/sc. 
Copied from Perforce
 Change: 190118
 ServerID: perforce.ravenbrook.com
 2016-03-16 17:36:35 +00:00
Richard Brooksby
9583c0f68a Merging branch mps/branch/2016-03-13/without-reservation into master sources. 
Copied from Perforce
 Change: 190106
 ServerID: perforce.ravenbrook.com
 2016-03-15 13:19:27 +00:00
Richard Brooksby
e3ce327e23 Catch-up merge from master sources to branch/2014-10-26/sc. 
Copied from Perforce
 Change: 190092
 ServerID: perforce.ravenbrook.com
 2016-03-15 11:18:27 +00:00
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
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
Richard Brooksby
07987ab579 Eliminating withreservoirpermit and all its variants. 
Copied from Perforce
 Change: 190005
 ServerID: perforce.ravenbrook.com
 2016-03-13 21:04:01 +00:00
Richard Brooksby
ca7dcd913e Basic removal of the reservoir pool from code and design. 
Copied from Perforce
 Change: 190000
 ServerID: perforce.ravenbrook.com
 2016-03-13 20:32:24 +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
275adfe651 Storing the pointer to the stack frame where setjmp was invoked, rather than the address of the jump buffer, as the hot end of the mutator state, because callee-save registered might be stored on either side of the jump buffer by the compiler. 
Removing the unnecessary assumption that the stack ends are word-aligned.

Copied from Perforce
 Change: 189582
 ServerID: perforce.ravenbrook.com
 2016-03-03 17:12:43 +00:00