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Author SHA1 Message Date
Richard Brooksby
ba1a4f78cb Declaring result codes using a relational macro, so that tests can print more meaningful output, and to eliminate redundant code. 
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 Change: 184382
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 2014-02-19 11:55:43 +00:00
Richard Brooksby
9d0644c05e Removing unused variable discovered by gcc. 
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 Change: 184380
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 2014-02-19 10:55:10 +00:00
Richard Brooksby
7e219e4284 Fixing up the build on freebsd (fri3gc) 
Copied from Perforce
 Change: 184356
 ServerID: perforce.ravenbrook.com
 2014-02-17 17:00:08 +00:00
Richard Brooksby
e4e59aa9bb Minor updates in response to review. see https://info.ravenbrook.com/mail/2014/02/17/16-27-18/0/ 
Copied from Perforce
 Change: 184354
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 2014-02-17 16:45:12 +00:00
Richard Brooksby
199a1261ed Catch-up merge from master, mainly to pick up chain-zones merge. 
Copied from Perforce
 Change: 184343
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 2014-02-14 15:23:36 +00:00
Richard Brooksby
c915c5abe7 Merging branch //info.ravenbrook.com/project/mps/branch/2014-01-29/mps-chain-zones/... into master. 
Copied from Perforce
 Change: 184342
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 2014-02-14 15:15:07 +00:00
Richard Brooksby
7f590df09d Responding to review comments. see <https://info.ravenbrook.com/mail/2014/02/14/14-38-07/0/>. 
Copied from Perforce
 Change: 184340
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 2014-02-14 15:05:18 +00:00
Richard Brooksby
ad8e5e5cd4 Catch-up merge from master, mainly to pick up gcbench. 
Copied from Perforce
 Change: 184335
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 2014-02-12 17:39:31 +00:00
Richard Brooksby
4ce753ec45 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. 
Copied from Perforce
 Change: 184333
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 2014-02-12 17:32:20 +00:00
Richard Brooksby
b4c03d0ef1 Clarifying how the beginning of the page table gets unmapped. 
Copied from Perforce
 Change: 184332
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 2014-02-12 15:06:04 +00:00
Richard Brooksby
0833d101a0 Responding to review comments. see <https://info.ravenbrook.com/mail/2014/02/12/11-30-00/0/>. 
Copied from Perforce
 Change: 184331
 ServerID: perforce.ravenbrook.com
 2014-02-12 11:31:00 +00:00
Richard Brooksby
763c6af2bc Purging half of the spare memory, rather than just enough to get under the limit, so that there aren’t many small unmaps, and many scans for spare pages. 
Copied from Perforce
 Change: 184326
 ServerID: perforce.ravenbrook.com
 2014-02-11 18:26:00 +00:00
Richard Brooksby
d3f9686d30 Fixing boundary cases for unmapping page table pages when there aren’t a nice whole number of descriptors on each page. 
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 Change: 184325
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 2014-02-11 17:18:21 +00:00
Richard Brooksby
3077840ff8 Adding a cache of free pages per zone to the arena, so that we recycle single pages fast, especially after each reclaim. 
Copied from Perforce
 Change: 184324
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 2014-02-11 15:23:32 +00:00
Richard Brooksby
2b5e126c48 Further tidying up of the page descriptor and naming. 
Copied from Perforce
 Change: 184323
 ServerID: perforce.ravenbrook.com
 2014-02-11 14:14:16 +00:00
Richard Brooksby
40e4e93dec 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. 
Copied from Perforce
 Change: 184322
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 2014-02-11 13:41:57 +00:00
David Lovemore
60ada86df4 Add gcbench, a parameterizable benchmark for gc pools. 
Copied from Perforce
 Change: 184312
 ServerID: perforce.ravenbrook.com
 2014-02-11 11:54:27 +00:00
Richard Brooksby
4329661aca Improving commentary on page table unmapping code in response to review. see <https://info.ravenbrook.com/mail/2014/01/31/17-26-12/0/>. 
Copied from Perforce
 Change: 184291
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 2014-02-04 16:56:36 +00:00
Gareth Rees
8b4c551f70 Bump version and copyright. 
Copied from Perforce
 Change: 184275
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 2014-01-31 16:41:37 +00:00
Richard Brooksby
c3a3429a2f Fixing gcc warnings found in https://travis-ci.org/ravenbrook/mps-temporary/jobs/17977403 
Copied from Perforce
 Change: 184271
 ServerID: perforce.ravenbrook.com
 2014-01-31 15:49:14 +00:00
Richard Brooksby
483133a19d Fixing awl and lo to actually allocate in the generation requested. 
Copied from Perforce
 Change: 184269
 ServerID: perforce.ravenbrook.com
 2014-01-31 15:27:51 +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
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 2014-01-31 15:21:21 +00:00
Richard Brooksby
f2c70fe37a Clarifying a comment. 
Copied from Perforce
 Change: 184262
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 2014-01-31 13:50:16 +00:00
Richard Brooksby
e5f2846a2d Keeping a single ring of spare chunks in the vm arena, in lru order, so that spare pages are unmapped closer to lru. 
Copied from Perforce
 Change: 184251
 ServerID: perforce.ravenbrook.com
 2014-01-31 09:36:42 +00:00
Richard Brooksby
8861cdcb2b Using a more robust page table unmapping method that catches pages previously left mapped in the error page of pagesmarkallocated. 
Test run passes.

Copied from Perforce
 Change: 184250
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 2014-01-31 02:05:11 +00:00
Richard Brooksby
b937a0b8fc Attempting to correct the unmapping of the page table. still doesn’t quite work. 
Copied from Perforce
 Change: 184249
 ServerID: perforce.ravenbrook.com
 2014-01-31 00:03:32 +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
9c70f44c70 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.

Copied from Perforce
 Change: 184245
 ServerID: perforce.ravenbrook.com
 2014-01-30 19:58:36 +00:00
Richard Brooksby
414d54d154 Converting some ancient “@@@@“ marked items into todo marked actions. 
Copied from Perforce
 Change: 184261
 ServerID: perforce.ravenbrook.com
 2014-01-30 19:33:14 +00:00
Richard Brooksby
cd840766ca Adding mps_key_gen generation keyword to pools that take a chain (except amc), so that you can specify which generation to allocate in by default. this allows some flexibility when the client can predict the lifetimes of objects. 
The AWL and LO pools allocate into generation 1 of the arena default chain if neither MPS_KEY_CHAIN or MPS_KEY_GEN is specified, simulating the default setup before the chain-zones branch.

Copied from Perforce
 Change: 184231
 ServerID: perforce.ravenbrook.com
 2014-01-30 14:27:09 +00:00
Richard Brooksby
89acdbe044 The ams pool no longer requires a chain argument, but defaults to the arena default chain. 
Chains passed to the AMS pool are no longer required to contain a single generation, though the AMS will only use the first generation by default.

Copied from Perforce
 Change: 184229
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 2014-01-30 13:21:45 +00:00
Richard Brooksby
870c36adca Converting ams stress test to use keyword arguments. 
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 Change: 184228
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 2014-01-30 13:18:35 +00:00
Richard Brooksby
e0c8a8f1c0 The chain parameter to amc is now optional, defaulting to the arena’s default chain. 
AWL and LO accept a chain parameter, and also default to the arena’s default chain, rather than creating their own dummy chains.

Copied from Perforce
 Change: 184227
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 2014-01-30 13:00:46 +00:00
Richard Brooksby
4b865369fc Adding a default chain to the arena. not used anywhere yet. 
Copied from Perforce
 Change: 184224
 ServerID: perforce.ravenbrook.com
 2014-01-29 18:07:43 +00:00
Richard Brooksby
4a4ba7d343 The awl and lo pools were allocating their segments along with other pool’s generation 1, while accounting sizes into generation 0. in fact, this “generation 1” was really a kind of placement “clump” and the segments really lived in generation 0. however, this confused the new chainalloc because there are no longer any “clumps” maintained by the arena, causing awlut to fail. fixed awl and lo to be truthful about the generation they’re allocating in. placement concerns have been removed. 
Copied from Perforce
 Change: 184220
 ServerID: perforce.ravenbrook.com
 2014-01-29 17:15:31 +00:00
Richard Brooksby
9cdb3dd03b Bringing strategy design up to date with changes to zone allocation. 
Adding design documents to Xcode project for easier editing and source control.

Copied from Perforce
 Change: 184218
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 2014-01-29 15:26:04 +00:00
Richard Brooksby
02962f64ca Eliminating dodgy use of *segprefdefault() which could lead to implicit calls to memcpy. 
Copied from Perforce
 Change: 184217
 ServerID: perforce.ravenbrook.com
 2014-01-29 15:13:22 +00:00
Richard Brooksby
6b4100e1b1 Since the dynamic generation is shared between chains (for some reason) using its unified zone set, rather than keeping a special zone set per chain, which would’ve used up more zones. 
Using arena->topGen->mortality for the dynamic generation’s mortality, rather than a global variable.

Copied from Perforce
 Change: 184216
 ServerID: perforce.ravenbrook.com
 2014-01-29 13:49:42 +00:00
Richard Brooksby
d8e81ae3c3 Abolishing the redundant generation to zone map in the vm arena, and replacing it with chainalloc, which allocates segments within a generation. 
Generations from different chains will no longer share the same zone sets, and will not be collected together.  To get this behaviour, use the same chain, as documented.

Copied from Perforce
 Change: 184213
 ServerID: perforce.ravenbrook.com
 2014-01-29 12:54:05 +00:00
Richard Brooksby
9e197b6a79 Fix broken hysteresis in tract mapping. only purge spare pages if it’s possible to free a chunk, rather than speculatively every reclaim. see <https://info.ravenbrook.com/mail/2014/01/25/17-37-52/0/>. 
Copied from Perforce
 Change: 184125
 ServerID: perforce.ravenbrook.com
 2014-01-25 18:00:51 +00:00
Richard Brooksby
f906187add iterating over segments using the pool and segment rings, rather than scanning the tract table, which may be full of irrelevant tracts, especially when non-gc pools are large. see <https://info.ravenbrook.com/mail/2014/01/25/12-16-09/0/>. 
Copied from Perforce
 Change: 184120
 ServerID: perforce.ravenbrook.com
 2014-01-25 15:33:10 +00:00
Richard Brooksby
76b66a7083 Adding a rash configuration to xcode builds. 
Copied from Perforce
 Change: 184117
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 2014-01-25 15:25:52 +00:00
Richard Brooksby
6e8d189002 Ignoring a.out (default output from cc). 
Copied from Perforce
 Change: 184116
 ServerID: perforce.ravenbrook.com
 2014-01-25 15:24:28 +00:00
Richard Brooksby
728ea5e066 Inclusion order mysteriously prevents profiling under xcode. 
Copied from Perforce
 Change: 184111
 ServerID: perforce.ravenbrook.com
 2014-01-24 16:00:49 +00:00
Richard Brooksby
8086cc7cad Merging the "dj" benchmark from the benchmarking development branch. 
Copied from Perforce
 Change: 184106
 ServerID: perforce.ravenbrook.com
 2014-01-24 15:29:28 +00:00
Richard Brooksby
e37946b6f9 Catch-up merge from master. 
Copied from Perforce
 Change: 184103
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 2014-01-24 14:22:27 +00:00
Gareth Rees
f1c066dab4 Remove obsolete file osxc.h. 
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 Change: 183954
 ServerID: perforce.ravenbrook.com
 2014-01-12 21:57:54 +00:00
Gareth Rees
158e4ea974 Test case libcbt.c is obsolete: mpslibcb mechanism was removed in change 179279. 
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 Change: 183952
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 2014-01-12 21:29:53 +00:00
Gareth Rees
b8f0a9195c Clarify decision to preserve/reclaim in amcreclaimnailed, avoiding ternary operator inside the if condition. 
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 Change: 183948
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 2014-01-12 11:21:21 +00:00
Gareth Rees
75e5c45a53 Remove unused (and unusable) macros arenarootring() and arenatracering(). 
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 Change: 183947
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 2014-01-12 11:19:35 +00:00