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96 commits

Author SHA1 Message Date
Gareth Rees
c94be13bdf Improved support for pelles c: 
* Refactor nmake files so that a compiler-specific makefile is included; move Microsoft Visual C-specific options to mv.nmk.
* Add nmake files for Pelles (w3i3pc.nmk and pc.nmk).
* Rename spw3i3mv.c to spw3i3.c and spw3i6mv.c to spw3i6.c since these are also used by Pelles C.
* Make reasonable changes to the source code to avoid warnings from Pelles C:
** check results of function calls;
** avoid useless return values;
** undef max before defining it;
** ensure printf formats are checkable;
** move notreached() assertions to the end of blocks;
** suppress warnings in cases where the code shouldn't be changed ("Unreachable code", "Inline assembly code is not portable", "Structured Exception Handling is not portable").

Copied from Perforce
 Change: 184977
 ServerID: perforce.ravenbrook.com
 2014-03-24 18:23:29 +00:00
Richard Brooksby
83ed2f72bf Reponding to code review <https://info.ravenbrook.com/mail/2014/03/10/17-01-58/0/>. 
Renaming the arena’s “zoned CBS” back to earlier “free CBS”, especially since it might not be zoned.

Copied from Perforce
 Change: 184738
 ServerID: perforce.ravenbrook.com
 2014-03-11 17:27:57 +00:00
Richard Brooksby
2a7fd3c326 Incomplete response to code review. see <https://info.ravenbrook.com/mail/2014/03/07/11-21-03/0/>. 
Copied from Perforce
 Change: 184735
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 2014-03-11 16:39:11 +00:00
Richard Brooksby
098eb9e6d7 Catch-up merge from master. 
Copied from Perforce
 Change: 184732
 ServerID: perforce.ravenbrook.com
 2014-03-11 16:30:47 +00:00
Richard Brooksby
e4451dcf3b Restoring error path for arenaalloc. 
Copied from Perforce
 Change: 184604
 ServerID: perforce.ravenbrook.com
 2014-02-28 13:48:56 +00:00
Richard Brooksby
9eb1d4a298 Adding unzoned arena tests back, now that there is a method of asking for them. 
Copied from Perforce
 Change: 184602
 ServerID: perforce.ravenbrook.com
 2014-02-28 13:46:36 +00:00
Richard Brooksby
b338f41c47 More closely duplicating the allocation policy from the old vmarena, and documenting why. 
Copied from Perforce
 Change: 184601
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 2014-02-28 13:35:51 +00:00
Richard Brooksby
eb75944742 Adding a keyword to the arena to disable zoned allocation. 
Copied from Perforce
 Change: 184599
 ServerID: perforce.ravenbrook.com
 2014-02-28 13:20:06 +00:00
Richard Brooksby
cd19bda000 Tidying up interfaces to cbsinit and cbsfindinzones. 
Documenting assumptions about CBS block allocation used by the arena.

Copied from Perforce
 Change: 184593
 ServerID: perforce.ravenbrook.com
 2014-02-28 10:30:32 +00:00
Richard Brooksby
0c16e904f5 Simplifying the interface to cbsfindinzones. 
Speeding up CBSFindInZones a bit.

Copied from Perforce
 Change: 184589
 ServerID: perforce.ravenbrook.com
 2014-02-28 01:25:18 +00:00
Richard Brooksby
fc720aff46 Eliminating complex zonedcbs adt and reintroducing a cbs with zone summaries. removing the default “high” segment preference, that caused the cbs trees to unbalance, and isn’t required outside of ep. considerable reduction in code and speed up, now at parity with master on test xc/release/gcbench -x 1234 amc 
Copied from Perforce
 Change: 184587
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 2014-02-28 00:35:05 +00:00
Richard Brooksby
9f380dba48 Adding some missing headers revealed by separate compilation. 
Copied from Perforce
 Change: 184584
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 2014-02-27 18:01:05 +00:00
Richard Brooksby
3d9635bafb Adding check for unexpected case of zone barging. 
Copied from Perforce
 Change: 184583
 ServerID: perforce.ravenbrook.com
 2014-02-27 17:50:44 +00:00
Richard Brooksby
322b4ba6dd Simplifying interface to high and low allocation in the zoned cbs. 
Copied from Perforce
 Change: 184576
 ServerID: perforce.ravenbrook.com
 2014-02-27 12:01:42 +00:00
Richard Brooksby
9223d3de81 Separating arena cbs allocator into abstract zonedcbs adt. the number of chunks seems to blow up. 
Copied from Perforce
 Change: 184575
 ServerID: perforce.ravenbrook.com
 2014-02-27 04:50:52 +00:00
Richard Brooksby
9dff6e6d1d Searching the freecbs now respects the “high” preference, though not yet within blocks. 
Copied from Perforce
 Change: 184574
 ServerID: perforce.ravenbrook.com
 2014-02-26 19:29:05 +00:00
Richard Brooksby
e7efed948e Implemented “high” preference allocation for zone stripes. 
Copied from Perforce
 Change: 184573
 ServerID: perforce.ravenbrook.com
 2014-02-26 18:18:20 +00:00
Richard Brooksby
a06ba218b6 Fixing cbsfindfirstinzones to return a res, because it can fail when it can’t allocate a cbs block, unlike cbsfindfirst. 
Fixing related corner case in arenaAllocFindInFreeCBS when it thought it couldn’t find a block when it was in fact running out of nodes.  This was revealed by “gcbench --npass 1 --arena-size 1M --seed 945632066 --niter 1 amc”.
Fixing draft ArenaFreeCBSDelete after exercising it.

Copied from Perforce
 Change: 184568
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 2014-02-26 17:40:39 +00:00
Richard Brooksby
e991295b8d Adding checking of the freecbs and zonecbss to arenacheck. 
Copied from Perforce
 Change: 184563
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 2014-02-26 14:25:01 +00:00
Gareth Rees
32d10cd02a Make mps_args_done obsolete. 
Copied from Perforce
 Change: 184543
 ServerID: perforce.ravenbrook.com
 2014-02-26 12:47:27 +00:00
Richard Brooksby
67b596b72b Implementing arenafreecbsdelete that might work on chunks that have interesting patterns of zone allocation. 
Further tidying up.

Copied from Perforce
 Change: 184531
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 2014-02-25 19:19:09 +00:00
Richard Brooksby
4295c4b9cc Tidying up and wrapping arena cbs operations. 
Copied from Perforce
 Change: 184530
 ServerID: perforce.ravenbrook.com
 2014-02-25 16:58:23 +00:00
Richard Brooksby
51578a6bad Removing the freering allocation cache, which breaks the cbs abstraction and does not give any benefit once we’re allocating from zonecbss. 
Copied from Perforce
 Change: 184529
 ServerID: perforce.ravenbrook.com
 2014-02-25 11:35:18 +00:00
Richard Brooksby
7f213d846c Tidying up arena cbs mfs teardown. 
Tidying up arena CBS initialisation and teardown.

Copied from Perforce
 Change: 184523
 ServerID: perforce.ravenbrook.com
 2014-02-25 11:16:12 +00:00
Richard Brooksby
c52f568137 Quick hack at allocating from per-zone cbs. promising performance. 
Copied from Perforce
 Change: 184507
 ServerID: perforce.ravenbrook.com
 2014-02-25 01:51:27 +00:00
Richard Brooksby
a298b3874b Attempting to combine fast page allocation with cbs allocation. currently not working properly, as the cbs and free page rings overlap. 
Copied from Perforce
 Change: 184471
 ServerID: perforce.ravenbrook.com
 2014-02-19 11:04:18 +00:00
Richard Brooksby
b12e1b8224 Adding per-zone arena cbss, but they aren’t filled with any free space yet. 
Copied from Perforce
 Change: 184470
 ServerID: perforce.ravenbrook.com
 2014-02-18 13:53:56 +00:00
Richard Brooksby
46e7234676 Added a pool argument to cbs creation so that cbss can share a pool. in particular, per-zone allocation cbss for the arena can share a single special block pool. 
Copied from Perforce
 Change: 184469
 ServerID: perforce.ravenbrook.com
 2014-02-18 13:53:56 +00:00
Richard Brooksby
4dff43a172 Catch-up merge from master, mainly to pick up spare-ring merge. 
Copied from Perforce
 Change: 184365
 ServerID: perforce.ravenbrook.com
 2014-02-18 13:47:49 +00:00
Richard Brooksby
36746fbaab Generic chunkinit and chunkdestroy now maintain their memory in the freecbs so that the client arena should also work. 
ArenaDestroy fixed so that ChunkDestroy can go ahead even though the freeCBS has been torn down.  Allows completion of test programs.

Copied from Perforce
 Change: 184295
 ServerID: perforce.ravenbrook.com
 2014-02-04 18:50:56 +00:00
Richard Brooksby
142063f059 Abolishing vmarenaalloc and its horrible relatives. 
Removing redundant SegPref structures from pools that only ever used the default.
Abolishing the VMNZ arena class, to be replaced with an option to ArenaCreate.

Copied from Perforce
 Change: 184293
 ServerID: perforce.ravenbrook.com
 2014-02-04 18:10:53 +00:00
Richard Brooksby
d34bfbabc9 Deleting a chunk’s address range from the arena’s freecbs when the chunk is destroyed. otherwise, the memory gets allocated and an assertion fires when that memory is not in any chunk. 
Copied from Perforce
 Change: 184281
 ServerID: perforce.ravenbrook.com
 2014-02-01 00:34:52 +00:00
Richard Brooksby
35ccb414a2 Adding arena extension back to the arena allocation policy. 
Copied from Perforce
 Change: 184280
 ServerID: perforce.ravenbrook.com
 2014-01-31 22:47:29 +00:00
Richard Brooksby
d206bd35b9 Changes from review comments made in <https://info.ravenbrook.com/mail/2014/01/31/13-40-25/0/>. 
ArenaSpareCommitExceeded changed to ArenaPurgeSpare so that the arena can properly reduce the amount of spare memory when setting the commit limit etc.
pagesMarkAllocated promptly unmaps page table pages in its error path.
Miscellaneous clarifications and extra checking.

Copied from Perforce
 Change: 184267
 ServerID: perforce.ravenbrook.com
 2014-01-31 15:21:21 +00:00
Richard Brooksby
ecc0ab3dfe Abolishing the spare pages bit table. 
Not quite working yet. This code fails to unmap unused page table pages, and so triggers an assertion at chunk finish.

Copied from Perforce
 Change: 184246
 ServerID: perforce.ravenbrook.com
 2014-01-30 19:58:36 +00:00
Richard Brooksby
070f7784dd Refactored implementation of preferenced allocation policy from vm arena to general purpose arena. 
Eliminating SegPrefExpress in most places, especially where there wasn’t really any preference.
Eliminating special case knowledge about garbage collection from the arena.

Copied from Perforce
 Change: 184279
 ServerID: perforce.ravenbrook.com
 2014-01-30 18:08:10 +00:00
Richard Brooksby
15667c6135 Incorporating early commit limit checking into arena allocation policy. 
Copied from Perforce
 Change: 184240
 ServerID: perforce.ravenbrook.com
 2014-01-30 15:44:46 +00:00
Richard Brooksby
bdc4557496 Abstracting the allocation policy from arenaalloc in order to implement arena extension policy. 
Copied from Perforce
 Change: 184239
 ServerID: perforce.ravenbrook.com
 2014-01-30 15:44:46 +00:00
Richard Brooksby
efc7ad3d08 Tidying up the bootstrap so that every chunk gets added to the arena’s freecbs. 
Copied from Perforce
 Change: 184238
 ServerID: perforce.ravenbrook.com
 2014-01-30 15:44:46 +00:00
Richard Brooksby
7e310bb39f Generalising allocation of initial page for the arena’s freecbs so that it can be used when new chunks are added. 
Copied from Perforce
 Change: 184237
 ServerID: perforce.ravenbrook.com
 2014-01-30 15:44:46 +00:00
Richard Brooksby
6d696d79be Hacky clean-up of the cbs' mfs tracts so that the arena can shut down successfully. 
Copied from Perforce
 Change: 184072
 ServerID: perforce.ravenbrook.com
 2014-01-21 16:10:16 +00:00
Richard Brooksby
23d1a5423c First draft of freeing into the arena's freecbs. 
Copied from Perforce
 Change: 184052
 ServerID: perforce.ravenbrook.com
 2014-01-18 18:24:07 +00:00
Richard Brooksby
3c52c769a1 Making the reservoir use arenaalloc and arenafree like a good citizen, rather than bypassing them, so that it correctly gets memory from the freecbs. 
Copied from Perforce
 Change: 184051
 ServerID: perforce.ravenbrook.com
 2014-01-18 17:45:56 +00:00
Richard Brooksby
cf8738fd9f First draft of allocating using the freecbs. arenaalloc finds a free address range in the cbs and asks the arena class to mark it allocated, rather than the arena class doing the search. plenty still missing. no freeing. 
Copied from Perforce
 Change: 184050
 ServerID: perforce.ravenbrook.com
 2014-01-18 17:16:10 +00:00
Richard Brooksby
7b54fc9926 Creating and tearing down the arena freecbs that will hold free address ranges. 
Copied from Perforce
 Change: 184049
 ServerID: perforce.ravenbrook.com
 2014-01-18 16:25:08 +00:00
Richard Brooksby
ad0d2c99df Adding a free address space cbs to the arena, initialising and finishing it, but not using it yet. 
Moved CBSStruct to mpmst.h so that it can be included inline in ArenaStruct without circularity problems.

Copied from Perforce
 Change: 184044
 ServerID: perforce.ravenbrook.com
 2014-01-17 16:15:13 +00:00
Gareth Rees
bcfad58d3c Merge custom cet mainline into the master sources. this includes fixes for job003519 (clock values in text telemetry logs on windows have top 32 bits zero), job003536 (cet office can't replicate 100k snowmen in reasonable time), job003651 (stack overflows are not reliably handled). 
Copied from Perforce
 Change: 183926
 ServerID: perforce.ravenbrook.com
 2014-01-10 14:16:08 +00:00
Richard Brooksby
03a84ad1c5 Ensuring that the arena passes consistency checking before calling vmarenatrivextended, by setting the zoneshift and alignment at the same time. 
Copied from Perforce
 Change: 182708
 ServerID: perforce.ravenbrook.com
 2013-06-12 20:02:29 +01:00
Richard Brooksby
60f7df4335 Adjusting the default extend_by of the mv pool to be more sensible and match the other pools, but overriding it in the case of the arena control pool, where the default originated. 
Copied from Perforce
 Change: 181946
 ServerID: perforce.ravenbrook.com
 2013-05-19 20:01:52 +01:00
Richard Brooksby
6d81499f35 Replacing duplicate *trivvarargs methods with a single implementation in args.c. 
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 Change: 181851
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 2013-05-16 13:10:01 +01:00