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Author SHA1 Message Date
Richard Brooksby
96be04cb42 Lifting zig and zag cases into common prefix to shorten splaysplit. a few percent faster. 
Copied from Perforce
 Change: 184446
 ServerID: perforce.ravenbrook.com
 2014-02-23 10:41:15 +00:00
Richard Brooksby
660c0821d6 Moving downward splay updates to after side tree linkage, allowing the optimiser to do a better job. produces about 10% speedup: xc/release/djbench -x 1234 --sshift 8 mvff 
Copied from Perforce
 Change: 184445
 ServerID: perforce.ravenbrook.com
 2014-02-23 10:41:15 +00:00
Richard Brooksby
a52bb1d3ea Implementing pointer-reversing tree traversal that does not disturb the tree shape, unlike the splay tree traversal, which flattens the tree into a list. replacing cbsiterate with this, knocking about 25% off the runtime of the test case: xc/release/djbench -x 1234 --sshift 8 mvff 
Copied from Perforce
 Change: 184444
 ServerID: perforce.ravenbrook.com
 2014-02-23 10:41:15 +00:00
Richard Brooksby
4e1d9e6a96 Optimising splaytreeneighbours by observing that once one neighbour is found, the other neighbour is already in our hand in one of the side trees. this reduces the number of splays when coalescing. 
Copied from Perforce
 Change: 184443
 ServerID: perforce.ravenbrook.com
 2014-02-23 10:41:15 +00:00
Richard Brooksby
d48028902e Specialising left and right splay tree searches where no comparisons are necessary. 
Copied from Perforce
 Change: 184442
 ServerID: perforce.ravenbrook.com
 2014-02-23 10:41:15 +00:00
Richard Brooksby
17b72c3052 Adding tree integrity check debugging function. 
Copied from Perforce
 Change: 184441
 ServerID: perforce.ravenbrook.com
 2014-02-23 10:41:15 +00:00
Richard Brooksby
fee5ac310e Eliminating redundant passing of tree keys by adding a method to extract the key from a tree node. 
Copied from Perforce
 Change: 184440
 ServerID: perforce.ravenbrook.com
 2014-02-23 10:41:15 +00:00
Richard Brooksby
2bb859f62b Avoid dropping children of found node in non-update case. oops. 
Copied from Perforce
 Change: 184439
 ServerID: perforce.ravenbrook.com
 2014-02-23 10:41:15 +00:00
Richard Brooksby
f951709e99 Lifting out pointer-reversed updates. 
Copied from Perforce
 Change: 184438
 ServerID: perforce.ravenbrook.com
 2014-02-23 10:41:15 +00:00
Richard Brooksby
93a0ffe8ee Generalising pointer reversal of tree spines. 
Copied from Perforce
 Change: 184437
 ServerID: perforce.ravenbrook.com
 2014-02-23 10:41:15 +00:00
Richard Brooksby
35ab73ab4a Reducing excessive punctuation and removing unnecessary goto cases in splaysplay. 
Copied from Perforce
 Change: 184436
 ServerID: perforce.ravenbrook.com
 2014-02-23 10:41:15 +00:00
Richard Brooksby
6eef655629 Avoiding general compare when searching for first and last nodes in a tree. 
Copied from Perforce
 Change: 184435
 ServerID: perforce.ravenbrook.com
 2014-02-23 10:41:15 +00:00
Richard Brooksby
6219c50ca1 Fixing splaytreefind on empty tree. oops. 
Regression test: xc/Debug/fbmtest 215526357

Copied from Perforce
 Change: 184434
 ServerID: perforce.ravenbrook.com
 2014-02-23 10:41:15 +00:00
Richard Brooksby
5cdcef0154 Splaysplay returns a compare to indicate the relationship of the new tree root to the key, eliminating some redundant tests, and making it more like treefind. 
Allowing SplayTreeNext to deal with modification during iteration, so that iteration can be used to delete trees, for example.

Copied from Perforce
 Change: 184433
 ServerID: perforce.ravenbrook.com
 2014-02-23 10:41:15 +00:00
Richard Brooksby
15c5b6dfc5 Fixing abuses of res and resfail in the splay tree interface. 
Copied from Perforce
 Change: 184432
 ServerID: perforce.ravenbrook.com
 2014-02-23 10:41:15 +00:00
Richard Brooksby
6bc35c5ca0 Generalising splayrotate operations into treerotates. 
Copied from Perforce
 Change: 184431
 ServerID: perforce.ravenbrook.com
 2014-02-23 10:41:15 +00:00
Richard Brooksby
c446abda38 Replacing null with treeempty where that is intended. 
Copied from Perforce
 Change: 184430
 ServerID: perforce.ravenbrook.com
 2014-02-23 10:41:15 +00:00
Richard Brooksby
d04f3c0bc4 Distinguishing tree keys (treekey) from generic void *. 
Copied from Perforce
 Change: 184429
 ServerID: perforce.ravenbrook.com
 2014-02-23 10:41:15 +00:00
Richard Brooksby
27373efc5c Unifying splaycomparemethod with treecompare. 
Copied from Perforce
 Change: 184428
 ServerID: perforce.ravenbrook.com
 2014-02-23 10:41:15 +00:00
Richard Brooksby
a6d87c91a8 Simplifying splay tree update prototype and removing special null case. 
Copied from Perforce
 Change: 184427
 ServerID: perforce.ravenbrook.com
 2014-02-23 10:41:15 +00:00
Richard Brooksby
2e5ca2df04 Replacing splaynode with tree generally. 
Copied from Perforce
 Change: 184426
 ServerID: perforce.ravenbrook.com
 2014-02-23 10:41:15 +00:00
Richard Brooksby
85b11f7b55 Replacing splaynodestruct with treestruct and basic tree navigation operations in the splay tree implementation. 
Copied from Perforce
 Change: 184425
 ServerID: perforce.ravenbrook.com
 2014-02-23 10:41:15 +00:00
Richard Brooksby
02dd6ce371 Desmurfing the naming conventions in cbs. 
Copied from Perforce
 Change: 184424
 ServerID: perforce.ravenbrook.com
 2014-02-23 10:41:14 +00:00
Richard Brooksby
96473a433e Adding basic generic binary tree datatype. 
Copied from Perforce
 Change: 184423
 ServerID: perforce.ravenbrook.com
 2014-02-23 10:41:07 +00:00
Gareth Rees
19fa48cba5 Catch-up merge from master sources to nailboard branch. 
Copied from Perforce
 Change: 184402
 ServerID: perforce.ravenbrook.com
 2014-02-20 14:48:39 +00:00
Richard Brooksby
005a9d56da Detaching buffers from segments before freeing them in mvt. 
Copied from Perforce
 Change: 184389
 ServerID: perforce.ravenbrook.com
 2014-02-19 13:58:37 +00:00
Richard Brooksby
2efd201955 Declaring result codes using a relational macro, so that tests can print more meaningful output, and to eliminate redundant code. 
Copied from Perforce
 Change: 184382
 ServerID: perforce.ravenbrook.com
 2014-02-19 11:55:43 +00:00
Richard Brooksby
d1e7a30752 Removing unused variable discovered by gcc. 
Copied from Perforce
 Change: 184380
 ServerID: perforce.ravenbrook.com
 2014-02-19 10:55:10 +00:00
Richard Brooksby
121113c697 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
4fc8971802 Minor updates in response to review. see https://info.ravenbrook.com/mail/2014/02/17/16-27-18/0/ 
Copied from Perforce
 Change: 184354
 ServerID: perforce.ravenbrook.com
 2014-02-17 16:45:12 +00:00
Richard Brooksby
d8cb7e9a01 Catch-up merge from master, mainly to pick up chain-zones merge. 
Copied from Perforce
 Change: 184343
 ServerID: perforce.ravenbrook.com
 2014-02-14 15:23:36 +00:00
Richard Brooksby
e6ff3a648f Merging branch //info.ravenbrook.com/project/mps/branch/2014-01-29/mps-chain-zones/... into master. 
Copied from Perforce
 Change: 184342
 ServerID: perforce.ravenbrook.com
 2014-02-14 15:15:07 +00:00
Richard Brooksby
2b0f94df6c Responding to review comments. see <https://info.ravenbrook.com/mail/2014/02/14/14-38-07/0/>. 
Copied from Perforce
 Change: 184340
 ServerID: perforce.ravenbrook.com
 2014-02-14 15:05:18 +00:00
Richard Brooksby
8679bb210f Catch-up merge from master, mainly to pick up gcbench. 
Copied from Perforce
 Change: 184335
 ServerID: perforce.ravenbrook.com
 2014-02-12 17:39:31 +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. 
Copied from Perforce
 Change: 184333
 ServerID: perforce.ravenbrook.com
 2014-02-12 17:32:20 +00:00
Richard Brooksby
e0c2c23d00 Clarifying how the beginning of the page table gets unmapped. 
Copied from Perforce
 Change: 184332
 ServerID: perforce.ravenbrook.com
 2014-02-12 15:06:04 +00:00
Richard Brooksby
e9f3f70cce 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
e59678ecf9 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
9e057d1bcc Fixing boundary cases for unmapping page table pages when there aren’t a nice whole number of descriptors on each page. 
Copied from Perforce
 Change: 184325
 ServerID: perforce.ravenbrook.com
 2014-02-11 17:18:21 +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. 
Copied from Perforce
 Change: 184324
 ServerID: perforce.ravenbrook.com
 2014-02-11 15:23:32 +00:00
Richard Brooksby
9bc635b24d 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
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. 
Copied from Perforce
 Change: 184322
 ServerID: perforce.ravenbrook.com
 2014-02-11 13:41:57 +00:00
David Lovemore
14a09c99a3 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
f8ac78ba0f 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
 ServerID: perforce.ravenbrook.com
 2014-02-04 16:56:36 +00:00
Gareth Rees
ad5b956475 Bump version and copyright. 
Copied from Perforce
 Change: 184275
 ServerID: perforce.ravenbrook.com
 2014-01-31 16:41:37 +00:00
Richard Brooksby
8a3dc7c98a 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
9cec005f66 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
66a05e1f05 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
34f5aece3d Clarifying a comment. 
Copied from Perforce
 Change: 184262
 ServerID: perforce.ravenbrook.com
 2014-01-31 13:50:16 +00:00
Richard Brooksby
7526f5abe8 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