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Author SHA1 Message Date
Gareth Rees
4b5d396792 Catch-up merge from master sources to branch/2014-03-30/addrset.
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 Change: 185288
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2014-04-07 15:02:09 +01:00
Gareth Rees
d3d2795fce Improve control over checking:
1. Where Type is a pointer type with a signature, replace CHECKL(TypeCheck(val)) with CHECKD(Type, val).
2. Where Type is a pointer type with no signature, replace CHECKL(TypeCheck(val)) with CHECKD_NOSIG(Type, val).
3. Where Type is a pointer type with a signature, but the structure is not visible at point of checking, replace CHECKL(TypeCheck(val)) with CHECKD_NOSIG(Type, val). Reference <design/check/#.hidden-type>
4. Make BTCheck extern and use it where possible.
5. Replace AVER(TypeCheck(val)) with AVERT(Type, val).

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 Change: 185263
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2014-04-06 22:51:05 +01:00
Gareth Rees
d2cbfda452 First pass at implementation of lands (collections of address ranges). 100% boilerplate!
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 Change: 185131
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2014-04-01 19:51:55 +01:00
Richard Brooksby
d1473656ee Resolving questions left behind in fixmes.
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 Change: 184609
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2014-02-28 14:42:44 +00:00
Richard Brooksby
460f988a46 Removing the freering allocation cache, which breaks the cbs abstraction and does not give any benefit once we’re allocating from zonecbss.
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 Change: 184529
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2014-02-25 11:35:18 +00:00
Richard Brooksby
2151d00c7f Catch-up merge from master, mainly to pick up spare-ring merge.
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 Change: 184365
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2014-02-18 13:47:49 +00:00
Richard Brooksby
4fc8971802 Minor updates in response to review. see https://info.ravenbrook.com/mail/2014/02/17/16-27-18/0/
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 Change: 184354
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2014-02-17 16:45:12 +00:00
Richard Brooksby
bc47522ae2 Abstracting partially mapped page tables into a sparsearray abstract datatype, removing a great deal of complexity from the vm arena, and some unnecessary double-initialisation and scanning loops during allocation.
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 Change: 184333
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2014-02-12 17:32:20 +00:00
Richard Brooksby
f1d5750639 Adding a cache of free pages per zone to the arena, so that we recycle single pages fast, especially after each reclaim.
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 Change: 184324
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2014-02-11 15:23:32 +00:00
Richard Brooksby
9bc635b24d Further tidying up of the page descriptor and naming.
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 Change: 184323
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2014-02-11 14:14:16 +00:00
Richard Brooksby
f9e9805b39 Encoding the page state in the bottom two bits of the first field, rather than using up a whole word, in order to make room for a free list pointer.
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 Change: 184322
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2014-02-11 13:41:57 +00:00
Richard Brooksby
3a1236d0ea 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.

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 Change: 184295
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2014-02-04 18:50:56 +00:00
Richard Brooksby
2b08236430 Using a more robust page table unmapping method that catches pages previously left mapped in the error page of pagesmarkallocated.
Test run passes.

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 Change: 184250
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2014-01-31 02:05:11 +00:00
Richard Brooksby
ce329f192e 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.

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 Change: 184246
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2014-01-30 19:58:36 +00:00
Richard Brooksby
0296f9c04a Adding spare pages to a ring within each chunk, so that they can be found without a bit table scan.
Spare pages are returned to the OS using the ring in roughly LRU order.
Only enough spare pages are returned to maintain hysteresis, rather than all of them.
Nearly ready to strip out the noSparePages bit table.

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 Change: 184245
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2014-01-30 19:58:36 +00:00
Richard Brooksby
e50418ce54 Tidying up the bootstrap so that every chunk gets added to the arena’s freecbs.
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 Change: 184238
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2014-01-30 15:44:46 +00:00
Gareth Rees
fab773659d Use macro nonnegative so that we can keep asserting that values are >= 0 without provoking "unsigned comparison >= 0 is always true" warnings from gcc.
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 Change: 183505
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2013-10-01 14:27:52 +01:00
Gareth Rees
949578bac4 Avoid warnings when compiling with -wwrite-strings:
* Use const char * in places where we want to assign string constants.
Avoid warnings when compiling with -Wextra:
* Avoid if statement with empty body in amcsshe.c
* Avoid comparison of unsigned >= 0.

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 Change: 183498
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2013-10-01 10:52:45 +01:00
Richard Brooksby
e8d345149f Adding references to critical path design.
Fixing cast from external scan state structure to a PARENT, now that we're not punning the pointer any more.

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 Change: 179347
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2012-09-07 20:49:05 +01:00
Richard Kistruck
7078ef1586 mps br/vmem: simple-chunk-return (fix broken compile):
Ooops, remove ALL references to pageTableBase and pageTableLimit fields.

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 Change: 170085
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2010-03-22 14:49:11 +00:00
Richard Kistruck
39da284821 mps br/vmem: simple-chunk-return:
tract.c -- fix more ChunkCache defects:
  - drop never-read chunkCache->pageTableBase and pageTableLimit fields: they were used for ChunkOfSeg(), back when each SegStruct was actually a PageStruct is some chunk's PageStructTable; see VMArenaChunkOfSeg() in //info.ravenbrook.com/project/mps/branch/2001-08-13/trunk/src/arenavm.chttps://github.com/Ravenbrook/mps/issues/46
  - there's no need for arena to initialise the chunk cache; this allows en/decache functions to be local to tract.c (ie. declared static)

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 Change: 170083
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2010-03-22 13:39:36 +00:00
Richard Kistruck
b75de3e923 mps br/vmem: simple-chunk-return:
arenavm.c --  on VMFree(), destroy any empty chunks (except the primary).  (VMFree is not the ideal place to do it, but works for proof of concept).
 tract.c -- fix ChunkCache defects:
  - previously, if cache is empty (chunkCache->chunk == NULL) then other fields are *undefined*; but code looks at them anyway (!) without first checking chunkCache->chunk;
  - change it (.chunk.empty.fields) so that, if cache is empty, other fields have defined values: cache-using code may look at them, and they are chosen so that no cache hit will occur.
  --> this fixes crashing defect shown by changelist 170072
  - AVERT(ChunkCache) in the many places it should be checked;
  - use AVERT_CRITICAL in ChunkEncache, because it is called by ChunkOfAddr;

 Also:
 plan.txt -- notes on use of primary chunk.
 config.h -- DIAG also in ci, please [Do not integ to master]
 diag.c -- skip ChainCondemnAuto diag thanks
 zcoll.c -- move printf announcing Destroying arena etc to just before, not just after, we do it.

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 Change: 170082
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2010-03-22 13:24:49 +00:00
Richard Kistruck
e82d034c98 Mps br/vmem: prepare for simple-chunk-return:
arenavm.c: VMFree is okay for testing chunk-ret; though just sparePagesPurge() for now;
  diag.c: show what we want for using zcoll to show chunk-ret:
    VM_ix_Create/Destroy
    TraceStart, excpet only briefly for dyn-crit (why=2) and not at all for minor
  locus.c: no newline on "condemn gens" diag please
  tract.c: ChunkDecache is BROKEN; just add AVER to catch this for now
  vmix.c: VM_ix_Create_ok/VM_ix_Destroy (vmw3.c needs similar)
  zcoll.c:
    release after mps_arena_collect!!!
    make, collect, make, collect, to show chunk-ret
    10MB arena means many chunks
None of this is releaseable quality of course.

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 Change: 170071
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2010-03-20 13:51:23 +00:00
Richard Kistruck
b27e4ff179 Mps br/timing (fix warnings "... may be used uninitialized"):
trace.c, tract.c: initialise variable to NULL

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 Change: 167191
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2009-01-21 14:17:56 +00:00
Richard Kistruck
0f430304ad Mps source typo in tract.c #define tractarena(seg) should be
#define TractArena(tract).  The broken definition worked because 
it was always invoked with "TractPool(tract)".  (Source-only change)

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 Change: 160013
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2006-08-10 14:21:20 +01:00
Richard Brooksby
e854cd8e1d Merging branch mps/2002-05-22/open-source-prep.
Making some new files consistent with changes from that branch.
Deleting some new Global Graphics confidential files.

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 Change: 30256
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2002-06-18 16:19:34 +01:00
Nick Barnes
6a1a360814 Integrate changes from global graphics.
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 Change: 30250
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2002-06-18 14:14:55 +01:00
Richard Brooksby
78ef580722 Eliminating "impl" type tags and replacing them with uri-style file references.
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 Change: 29900
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2002-06-07 17:34:59 +01:00
Richard Brooksby
97075f7053 Updating cross references to design documents to html style, to go with master/design document tree.
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 Change: 29897
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2002-06-07 16:47:14 +01:00
Richard Brooksby
a0f676c8e1 Adding forward reference to licenses from copyright notices.
Adding licenses to a couple of files I missed.

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 Change: 29837
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2002-06-06 11:56:19 +01:00
Richard Brooksby
4301a6db0a Adding licenses to source code files.
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2002-06-06 11:44:23 +01:00
Nick Barnes
db4b3a6fa5 Remove trailing whitespace.
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 Change: 25309
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2001-12-17 15:18:17 +00:00
Richard Brooksby
c0bb4cd3cd Removing hopenames from the master sources.
This change will be integrated but ignored (-ay) to the gg-epcore/union sources, so that they retain HopeNames.

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 Change: 24911
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2001-12-07 13:19:25 +00:00
Richard Brooksby
3d5e2ca85f Adding hopenames back into the master sources, so that they can be included in the union sources along with the id keywords.
This was achieved by partially undoing changelist 24817, including an accidental corruption of eventgen.pl.

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 Change: 24877
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2001-12-06 18:14:02 +00:00
Richard Brooksby
b824e1c406 Updating copyright messages to say copyright 2001 ravenbrook throughout.
Adding some missing copyright messages.

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 Change: 24818
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2001-12-05 16:18:43 +00:00
Richard Brooksby
2589307099 Changing hopename keywords to id keywords throughout, to work with perforce.
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 Change: 24817
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2001-12-05 16:05:52 +00:00
Richard Brooksby
492dd3c684 Merging changes from union to masters. this incorporates pekka's updates: tuning and a type in amcsshe.c and some adding some missing checks in arenavm.c. it also brings our cope of their hopenames up to date.
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 Change: 24815
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2001-12-05 15:48:24 +00:00
Nick Barnes
7acfca905d Branch imports for masters.
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 Change: 23678
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2001-10-31 14:40:56 +00:00
Renamed from mps/src/tract.c (Browse further)