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1336 commits

Author SHA1 Message Date
Richard Brooksby
b160cf778a 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
3b3e01b10f 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
6b16beb0c6 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
dc83b10c0d 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
 ServerID: perforce.ravenbrook.com
 2014-02-26 17:40:39 +00:00
Richard Brooksby
c76ae6e629 Removing unused fields from vmarenastruct. 
Copied from Perforce
 Change: 184567
 ServerID: perforce.ravenbrook.com
 2014-02-26 17:37:16 +00:00
Richard Brooksby
4a1eb8bae3 Adding clarifying bracket. 
Copied from Perforce
 Change: 184566
 ServerID: perforce.ravenbrook.com
 2014-02-26 17:36:27 +00:00
Richard Brooksby
f215460eb1 Adding checking of the freecbs and zonecbss to arenacheck. 
Copied from Perforce
 Change: 184563
 ServerID: perforce.ravenbrook.com
 2014-02-26 14:25:01 +00:00
Richard Brooksby
4fdddc36e0 Backing out zone set summary in the cbs. this isn't needed for speed now that there's a cbs per zone in the arena, and it will slow down all other cbss. 
Copied from Perforce
 Change: 184561
 ServerID: perforce.ravenbrook.com
 2014-02-26 14:24:34 +00:00
Richard Brooksby
8f85caa56e Fixing bug where cbs overwrites its own blockpool pointer with garbage. 
Copied from Perforce
 Change: 184532
 ServerID: perforce.ravenbrook.com
 2014-02-25 19:19:37 +00:00
Richard Brooksby
3da21234fd Implementing arenafreecbsdelete that might work on chunks that have interesting patterns of zone allocation. 
Further tidying up.

Copied from Perforce
 Change: 184531
 ServerID: perforce.ravenbrook.com
 2014-02-25 19:19:09 +00:00
Richard Brooksby
d1b6ad25c7 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
460f988a46 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
5a03d625e2 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
08a41a0ad9 Merging gcbench bug fix from master. 
Copied from Perforce
 Change: 184521
 ServerID: perforce.ravenbrook.com
 2014-02-25 11:15:52 +00:00
Richard Brooksby
8115dbd700 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
3dcb5c3ea1 Merging bug fix for gcbench exit from development branch. 
Copied from Perforce
 Change: 184506
 ServerID: perforce.ravenbrook.com
 2014-02-25 01:49:49 +00:00
Richard Brooksby
f9051f09f6 Catch-up merge from master, mainly to pick up gcbench fixes. 
Copied from Perforce
 Change: 184504
 ServerID: perforce.ravenbrook.com
 2014-02-25 01:29:12 +00:00
Richard Brooksby
5ac2b0b14e Bug fix. gcbench attempted to delete a nonexistent chain by default. 
Copied from Perforce
 Change: 184497
 ServerID: perforce.ravenbrook.com
 2014-02-24 23:03:10 +00:00
Richard Brooksby
5f9e072412 Bug fix. nonsensical case in cbsfindlargest when size is passed as zero. 
Added RangeCopy.

Copied from Perforce
 Change: 184496
 ServerID: perforce.ravenbrook.com
 2014-02-24 23:02:42 +00:00
Richard Brooksby
7db856f7b8 Fixed a bug in cbsfindlargest where it always deleted the entire range found even when finddeletelow or finddeletehigh were passed. 
Copied from Perforce
 Change: 184493
 ServerID: perforce.ravenbrook.com
 2014-02-24 22:48:48 +00:00
Richard Brooksby
a28fda3fc5 Making assertions in cbsupdatenode critical, since this is extremely hot in any cbs with fast find. 
Copied from Perforce
 Change: 184492
 ServerID: perforce.ravenbrook.com
 2014-02-24 22:27:16 +00:00
Richard Brooksby
dc38189d5c Adding rangeisempty. 
Copied from Perforce
 Change: 184491
 ServerID: perforce.ravenbrook.com
 2014-02-24 22:26:22 +00:00
Richard Brooksby
018653d160 Fixing compiler warning. 
Copied from Perforce
 Change: 184490
 ServerID: perforce.ravenbrook.com
 2014-02-24 22:25:48 +00:00
Gareth Rees
c1ef37731a Refactor the computation of the chunk size into its own function, thus avoiding an "unreachable code" error from clang. 
Copied from Perforce
 Change: 184482
 ServerID: perforce.ravenbrook.com
 2014-02-24 21:32:22 +00:00
Richard Brooksby
4f73fc5afe Initial hack at replacing the arena control pool with mvff. 
Copied from Perforce
 Change: 184489
 ServerID: perforce.ravenbrook.com
 2014-02-24 21:14:41 +00:00
Richard Brooksby
b876c0ff82 Only finishing the cbs block pool when cbs created it. oops. 
Copied from Perforce
 Change: 184488
 ServerID: perforce.ravenbrook.com
 2014-02-24 21:14:40 +00:00
Richard Brooksby
57c9c5aac8 Finishing the mvff block pool. oops. 
Copied from Perforce
 Change: 184487
 ServerID: perforce.ravenbrook.com
 2014-02-24 21:14:40 +00:00
Richard Brooksby
5fc0d82d6a Initialising a shared inline mfs for the cbss in mvff so that mvff can be used as the arena’s bootstrap and control pool. 
Copied from Perforce
 Change: 184486
 ServerID: perforce.ravenbrook.com
 2014-02-24 21:14:40 +00:00
Richard Brooksby
bdd84a3a0f Bug fix. ensuring cbsfinddeleterange returns oldrangereturn even if it doesn’t delete a block. 
Copied from Perforce
 Change: 184485
 ServerID: perforce.ravenbrook.com
 2014-02-24 21:14:39 +00:00
Richard Brooksby
02fd3498d8 Catch-up merge from master, mainly to pick up gcbench fix. 
Copied from Perforce
 Change: 184480
 ServerID: perforce.ravenbrook.com
 2014-02-24 21:14:13 +00:00
Gareth Rees
09dd8e7027 Avoid use of unreachable code in protcatchthread on os x. 
Copied from Perforce
 Change: 184478
 ServerID: perforce.ravenbrook.com
 2014-02-24 18:07:14 +00:00
Richard Brooksby
05a2713826 Reforming mvff pool class to avoid using segments and to actually have a chance to return memory to the arena. 
Copied from Perforce
 Change: 184467
 ServerID: perforce.ravenbrook.com
 2014-02-23 21:00:53 +00:00
Richard Brooksby
a8720f2615 Adding cbssize and freelistsize functions to calculate the size of freelist contents. 
Copied from Perforce
 Change: 184466
 ServerID: perforce.ravenbrook.com
 2014-02-23 20:59:44 +00:00
David Lovemore
c34562d0d4 Add pin-leaf option to gcbench. 
Remove default chain from gcbench.

Copied from Perforce
 Change: 184454
 ServerID: perforce.ravenbrook.com
 2014-02-23 13:44:54 +00:00
Richard Brooksby
8eb1c7b647 Making splaysplit and splayassemble general so that they can be used easily. 
Copied from Perforce
 Change: 184452
 ServerID: perforce.ravenbrook.com
 2014-02-23 12:18:18 +00:00
Richard Brooksby
bcdce5b35d Returning the results of splitting in a structure so that it’s easier to pass them on to assemble. 
Copied from Perforce
 Change: 184451
 ServerID: perforce.ravenbrook.com
 2014-02-23 12:10:52 +00:00
Richard Brooksby
42a8ffbe6a Removing unnecessary case of splaying empty trees. 
Copied from Perforce
 Change: 184450
 ServerID: perforce.ravenbrook.com
 2014-02-23 11:52:21 +00:00
Richard Brooksby
1ac9877082 Adding a signature to splay tree structure. miscellaneous documentation and naming clean-up. 
Copied from Perforce
 Change: 184448
 ServerID: perforce.ravenbrook.com
 2014-02-23 10:41:15 +00:00
Richard Brooksby
29cba255f2 Pointer-reversing splay and assemble to avoid double traversal of side tree spines in the update case. 
Copied from Perforce
 Change: 184447
 ServerID: perforce.ravenbrook.com
 2014-02-23 10:41:15 +00:00
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