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106 commits

Author SHA1 Message Date
Richard Brooksby
687c50b762 Implementing top-down (last fit) allocation in zones. 
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 Change: 184771
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 2014-03-13 12:06:28 +00:00
Richard Brooksby
4eec2493b7 Adding a keyword to the arena to disable zoned allocation. 
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 Change: 184599
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 2014-02-28 13:20:06 +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
d8cb7e9a01 Catch-up merge from master, mainly to pick up chain-zones merge. 
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 Change: 184343
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 2014-02-14 15:23:36 +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
2c3c67e73e 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. 
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 Change: 184281
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 2014-02-01 00:34:52 +00:00
Richard Brooksby
ae6362a7ce Adding arena extension back to the arena allocation policy. 
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 Change: 184280
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 2014-01-31 22:47:29 +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.

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 Change: 184267
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 2014-01-31 15:21:21 +00:00
Richard Brooksby
7a73e98638 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.

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 Change: 184279
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 2014-01-30 18:08:10 +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
Richard Brooksby
e27cf4b361 Merging from branch //info.ravenbrook.com/project/mps/branch/2014-01-29/mps-chain-zones/... in order to eliminate generational considerations from the vm arena's placement policy. 
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 Change: 184233
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 2014-01-30 15:29:46 +00:00
Richard Brooksby
8e4e0f066e Eliminating dodgy use of *segprefdefault() which could lead to implicit calls to memcpy. 
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 Change: 184217
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 2014-01-29 15:13:22 +00:00
Richard Brooksby
f719851f50 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.

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 Change: 184216
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 2014-01-29 13:49:42 +00:00
Richard Brooksby
115af8c270 Catch-up merge from master to pick up improvements to segment iteration. 
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 Change: 184122
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 2014-01-25 17:01:57 +00:00
Richard Brooksby
56d48bbd1d 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/>. 
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 Change: 184120
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 2014-01-25 15:33:10 +00:00
Richard Brooksby
cd4a12047f Non-working preferential allocation within a block of the cbs. 
This doesn't work because the splay tree can't cope with homing in on a node (that appears big enough) then being told that it isn't suitable (because it doesn't have space in the right zone).  The splay tree summary condition must be precise, as stated in the design.  The splay tree isn't suited to this kind of search.

Copied from Perforce
 Change: 184073
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 2014-01-21 16:29:30 +00:00
Richard Brooksby
be42effdb3 First draft of freeing into the arena's freecbs. 
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 Change: 184052
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 2014-01-18 18:24:07 +00:00
Richard Brooksby
32d8c32b6d Making the reservoir use arenaalloc and arenafree like a good citizen, rather than bypassing them, so that it correctly gets memory from the freecbs. 
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 Change: 184051
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 2014-01-18 17:45:56 +00:00
Gareth Rees
5ddfd0dbcd 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
Gareth Rees
ea9df0b2b7 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). 
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 Change: 183926
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 2014-01-10 14:16:08 +00:00
Gareth Rees
e88bcc5184 Document the intention behind mps_ld_isstale rather than the implementation: it captures the intention of testing whether a particular dependency is stale (even though the implementation in fact tests whether any dependency is stale). add new function mps_ls_isstale_any for expressing the intention of testing whether any dependencey is stale. the two functions have the same implementation at present, but the separation gives us the freedom to return a more precise result from mps_ld_isstale in future. 
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 Change: 182816
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 2013-06-20 16:25:08 +01:00
Richard Brooksby
56645cdc0c Merging branch/2013-05-17/emergency with major rework of mvt, mvff, and cbs. 
Some parts of this are still ragged, and would not normally pass review, but this is a massive improvement to the existing code.

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 Change: 182614
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 2013-06-08 10:57:57 +01:00
Gareth Rees
509ebcb215 Check that all addresses in the freed range belong to the pool, not just the base of the range. 
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 Change: 182602
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 2013-06-07 13:20:20 +01:00
Richard Brooksby
982dc78f06 Merging branch/2013-06-05/diag to eliminate the "diag" system. hurrah! 
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 Change: 182575
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 2013-06-06 14:56:47 +01:00
Gareth Rees
1c4ff669ac Remove diag facility. 
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 Change: 182553
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 2013-06-05 18:35:40 +01:00
Gareth Rees
934ae05ca3 Rename the enumeration cbsfinddelete to finddelete in anticipation of it being shared between cbs and new freelist module. 
Since ABQDisposition enumeration only has two values, it's better to use Bool.

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 Change: 182347
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 2013-05-31 00:09:33 +01:00
Gareth Rees
aaf6e8b13b New public function mps_fmt_create_k creates an object format using the keyword argument interface. 
Deprecate the format variant structures (mps_fmt_A_s, mps_fmt_B_s, mps_fmt_auto_header_s, mps_fmt_fixed_s) and the old interface (mps_fmt_create_A, mps_fmt_create_B, mps_fmt_create_auto_header, mps_fmt_create_fixed).

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 Change: 182277
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 2013-05-28 16:10:08 +01:00
Richard Brooksby
818a65f36f 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
Richard Brooksby
bb02f55b62 Making clear the size of the array of args passed to varargs conversion methods. 
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 Change: 181845
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 2013-05-16 03:12:11 +01:00
Richard Brooksby
93fee75c50 Eliminating unnecessary use of varargs in segment split and merge functions. 
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 Change: 181842
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 2013-05-16 03:02:20 +01:00
Richard Brooksby
688b5bf73d Converting varags on buffer and ap creation into keyword argument lists. 
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 Change: 181680
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 2013-05-09 18:25:53 +01:00
Richard Brooksby
af44d1241f Replacing varargs passed to seginit with keyword argument list. 
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 Change: 181679
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 2013-05-09 17:34:01 +01:00
Richard Brooksby
13095f52bf Moving keyword argument declarations to their own header, since they're largely separable from the mps. 
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 Change: 181646
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 2013-05-08 23:09:35 +01:00
Richard Brooksby
71b7e4f70a Pushing varargs decoding into a pool class method. much simpler. 
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 Change: 181642
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 2013-05-08 22:43:51 +01:00
Richard Brooksby
c781e594a8 Adding keyword argument checking for format and chain. 
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 Change: 181637
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 2013-05-08 16:29:12 +01:00
Richard Brooksby
07f446a450 Converting pools to use keyword arguments, mostly, and so far inconsistently, but at least it compiles. 
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 Change: 181635
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 2013-05-08 16:21:12 +01:00
Richard Brooksby
c0a8608bf7 Basically working keyword arguments, though vmparam is unsatisfactory. 
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 Change: 181545
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 2013-05-03 17:20:35 +01:00
Richard Brooksby
1bc62b27ef First draft of keyword arguments. mainly checking in in order to try working with git fusion on this branch. 
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 Change: 181538
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 2013-05-02 17:55:07 +01:00
Richard Brooksby
513aabb046 Further elimination of type puns that violate the strict aliasing rule. this change eliminates puns on the format methods. 
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 Change: 179452
 ServerID: perforce.ravenbrook.com
 2012-09-12 19:45:27 +01:00
Richard Brooksby
9248316fb6 Further reduction of interface puns that violate the strict aliasing rule, this time in thread function types and the corresponding threadstruct. 
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 Change: 179451
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 2012-09-12 19:32:37 +01:00
Richard Brooksby
75837d8376 Fixing type puns around arenapeek and arenapoke by allowing them to take a ref * to get a ref, rather than an addr. 
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 Change: 179382
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 2012-09-10 10:33:22 +01:00
Richard Brooksby
5a604a2f51 Fixing bugs introduced by type puns passed through scanning methods, discovered by offsetting mps_ss_s from the beginning of scanstatestruct. 
Adding a pseudo-target "find-puns" which, on FreeBSD mostly, prints useful warnings about strict aliasing rule violations.
Fixing more strict aliasing rule violations found by the above.

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 Change: 179358
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 2012-09-07 23:48:14 +01:00
Richard Brooksby
78d5f049f0 Eliminating type puns on scan states, location dependencies, and allocation points through the mps interface. 
Now that we're recommending inlining with client code and optimising with -O2 or -O3, we can't afford any bug introduced by the strict aliasing rule.

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 Change: 179322
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 2012-09-07 12:58:57 +01:00
Richard Brooksby
858e4ac0ac Partial merge of branch/2012-07-23/cet-transform, excluding cet-specific parts. 
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 Change: 179309
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 2012-09-06 17:17:18 +01:00
Richard Brooksby
27c6706791 Merging branch/2012-08-21/diagnostic-telemetry. 
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 Change: 179289
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 2012-09-05 23:45:31 +01:00
David Lovemore
886e96ba8e Fix weak band assert. we now trace weak segments as weak on a fault if we are in the weak band. 
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 Change: 179210
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 2012-09-03 17:05:51 +01:00
Richard Brooksby
c4c3595fb8 Now there is no measurable performance penalty for events, they're on in all varieties (except we). 
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 Change: 179137
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 2012-08-31 16:42:17 +01:00
David Lovemore
ed8cd9432d In tracescanareatagged use the alignments of pools in the condemned set to determine mask. 
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 Change: 179117
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 2012-08-30 13:48:41 +01:00
Richard Brooksby
15de8407ce Moving linux-specific parts out of thli.c in order to unify with freebsd. 
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 Change: 178925
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 2012-08-14 17:05:11 +01:00
Richard Brooksby
3893cede56 Catching up with masters, to bring in work from branch/2012-03-27/longest. 
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 Change: 178073
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 2012-05-01 16:29:25 +01:00