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1231 commits

Author SHA1 Message Date
Richard Brooksby
d75cfe191c Incorporating early commit limit checking into arena allocation policy. 
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 Change: 184240
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 2014-01-30 15:44:46 +00:00
Richard Brooksby
973575140f Abstracting the allocation policy from arenaalloc in order to implement arena extension policy. 
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 Change: 184239
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 2014-01-30 15:44:46 +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
a1d6492998 Generalising allocation of initial page for the arena’s freecbs so that it can be used when new chunks are added. 
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 Change: 184237
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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
4b50f3688b 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
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 2014-01-30 14:27:09 +00:00
Richard Brooksby
17b69133b5 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
63f1fcedc2 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
f30fd7ef84 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
1982233b78 Adding a default chain to the arena. not used anywhere yet. 
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 Change: 184224
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 2014-01-29 18:07:43 +00:00
Richard Brooksby
e02a69f88b 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
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 2014-01-29 17:15:31 +00:00
Richard Brooksby
eba2dc5a54 Bringing strategy design up to date with changes to zone allocation. 
Adding design documents to Xcode project for easier editing and source control.

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 Change: 184218
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 2014-01-29 15:26:04 +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.

Copied from Perforce
 Change: 184216
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 2014-01-29 13:49:42 +00:00
Richard Brooksby
f1abe0e30f 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
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 2014-01-29 12:54:05 +00:00
Richard Brooksby
deb3237c44 Allowing splayfindfirst to continue to search even if the treetest is not precise, allowing the arena allocator to search for free areas using a zone preference. 
Copied from Perforce
 Change: 184129
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 2014-01-26 14:01:37 +00:00
Richard Brooksby
10e9a638e4 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
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 2014-01-25 18:00:51 +00:00
Richard Brooksby
115af8c270 Catch-up merge from master to pick up improvements to segment iteration. 
Copied from Perforce
 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/>. 
Copied from Perforce
 Change: 184120
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 2014-01-25 15:33:10 +00:00
Richard Brooksby
893ac1da13 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
a788a9efdd Ignoring a.out (default output from cc). 
Copied from Perforce
 Change: 184116
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 2014-01-25 15:24:28 +00:00
Richard Brooksby
a72f6fb94f Catch-up merges from master to pick up xcode profiling tweak. 
Copied from Perforce
 Change: 184112
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 2014-01-24 16:09:28 +00:00
Richard Brooksby
f91a987e32 Inclusion order mysteriously prevents profiling under xcode. 
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 Change: 184111
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 2014-01-24 16:00:49 +00:00
Richard Brooksby
52a83b4393 Catch-up merge from master to pick up "dj" benchmark. 
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 Change: 184110
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 2014-01-24 15:59:05 +00:00
Richard Brooksby
8ef0ecb155 Merging the "dj" benchmark from the benchmarking development branch. 
Copied from Perforce
 Change: 184106
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 2014-01-24 15:29:28 +00:00
Richard Brooksby
199ef9ca11 Catch-up merge from master. 
Copied from Perforce
 Change: 184103
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 2014-01-24 14:22:27 +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
69895308e5 Hacky clean-up of the cbs' mfs tracts so that the arena can shut down successfully. 
Copied from Perforce
 Change: 184072
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 2014-01-21 16:10:16 +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. 
Copied from Perforce
 Change: 184051
 ServerID: perforce.ravenbrook.com
 2014-01-18 17:45:56 +00:00
Richard Brooksby
6954977079 First draft of allocating using the freecbs. arenaalloc finds a free address range in the cbs and asks the arena class to mark it allocated, rather than the arena class doing the search. plenty still missing. no freeing. 
Copied from Perforce
 Change: 184050
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 2014-01-18 17:16:10 +00:00
Richard Brooksby
44de7246e5 Creating and tearing down the arena freecbs that will hold free address ranges. 
Copied from Perforce
 Change: 184049
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 2014-01-18 16:25:08 +00:00
Richard Brooksby
3e1d93b97d Part of changelist 184047. oops. 
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 Change: 184048
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 2014-01-18 15:46:18 +00:00
Richard Brooksby
d04bf862b9 Poolmfs can take a zero extendby so that it never extends itself, and have memory added using mfsextend. this allows the mfs pool to be used to store blocks for the arena's cbs before the tract allocator exists. 
Copied from Perforce
 Change: 184047
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 2014-01-18 15:45:22 +00:00
Richard Brooksby
c71a9513e0 Adding a free address space cbs to the arena, initialising and finishing it, but not using it yet. 
Moved CBSStruct to mpmst.h so that it can be included inline in ArenaStruct without circularity problems.

Copied from Perforce
 Change: 184044
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 2014-01-17 16:15:13 +00:00
Richard Brooksby
9eeaa3a388 Inlining the mfs block pool's structure into its parent mfs, to avoid allocating in the control pool when initialising a cbs. this will allow the cbs to be used before the control pool exists. 
Copied from Perforce
 Change: 184043
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 2014-01-17 15:48:12 +00:00
Gareth Rees
1ccc6908a6 Remove obsolete file osxc.h. 
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 Change: 183954
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 2014-01-12 21:57:54 +00:00
Gareth Rees
f6160d9720 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
997f5a914e 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
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
f316e646b3 Ignore build products for new platform lii6ll. 
Ignore telemetry database mpiso*.sql.

Copied from Perforce
 Change: 183942
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 2014-01-11 21:37:19 +00:00
Gareth Rees
3afb84b7b5 Rename spi3.c to spw3i3mv.c as it is windows- and microsoft- specific. 
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 Change: 183939
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 2014-01-10 20:51:13 +00:00
Gareth Rees
d917eb1d0c Merge branch/2013-05-17/emergency into the master sources. 
This change refactors MVTBufferFill and makes related improvements to improve the clarity of the code.

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 Change: 183935
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 2014-01-10 18:52:08 +00:00
Gareth Rees
c5bce746b1 Change result type of abqpush, abqpop and abqpeek to bool. 
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 Change: 183934
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 2014-01-10 18:44:46 +00:00
Gareth Rees
b14f5a51d7 Make improvements (mostly to comments) based on reviews: 
https://info.ravenbrook.com/mail/2014/01/10/15-57-50/0/
https://info.ravenbrook.com/mail/2014/01/10/15-40-47/0/

Copied from Perforce
 Change: 183932
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 2014-01-10 18:18:06 +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
2044d82a77 Clarify comment above bufferisreset: by "all pointers into the region" it actually means "the base, init, alloc, and limit pointers". 
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 Change: 183637
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 2013-11-04 15:31:58 +00:00
Gareth Rees
73fa242bb1 Improve documentation of thread- and exception-safety precautions. 
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 Change: 183635
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 2013-11-04 15:14:47 +00:00
Gareth Rees
ba0e8c1b8b Put testsetsize back to its original value of 200, so that randomsizealigned does not invoke undefined behaviour by right-shifting by more than the word width. 
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 Change: 183617
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 2013-10-31 09:39:09 +00:00
Gareth Rees
8f9423a8c3 Add comments and assertions to make it clearer how btfindresrange and btfindresrangehigh work. in particular, explain why the possible unsigned integer underflow in btfindresrangehigh is safe. 
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 Change: 183613
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 2013-10-30 15:53:19 +00:00