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444 Commits

Author SHA1 Message Date
Roberto Ierusalimschy ccae0f5aad Comments about OLD0/OLD1 ages 
Improved the comments in file 'lgc.c' explaining the roles of "ages"
OLD0 and OLD1 in the generacional collector.
 2018-07-18 11:43:45 -03:00
Roberto Ierusalimschy 2e297d6ab3 Fixed bug in generational collection of userdata 
During generational collection, a userdatum must become gray and
go to a gray list after being traversed (like tables), so that
'correctgraylist' can handle it to its next stage.

This commit also added minimum tests for the generational collector,
including one that would detect this bug.
 2018-07-13 15:43:02 -03:00
Roberto Ierusalimschy 626cf0581b Generational mode may wait longer after a major collection 
When Lua is building large long-duration structures, frequent small
minor collections just waste time. Trying to avoid this, the
collector will do a larger pause after a major collection when it
does not collect enough garbage (which is a hint that memory is
being used for long-lasting objects).
 2018-07-09 14:22:09 -03:00
Roberto Ierusalimschy 6e600695f8 field 'sizearray' in struct 'Table' changed to 'alimit', which can 
be used as a hint for '#t'
 2018-06-15 11:14:20 -03:00
Roberto Ierusalimschy 0c7738240e FALLTHROUGH comment must be last "statement" 
(so it does not work when inside a block)
 2018-03-16 11:22:09 -03:00
Roberto Ierusalimschy 2952bc5fc9 special compact representation for userdata with no user values 
(a common case)
 2018-02-26 10:35:03 -03:00
Roberto Ierusalimschy 4a7fe61806 in 'clearbykeys', clear keys of just-removed entries too 2018-02-23 10:21:27 -03:00
Roberto Ierusalimschy 9243c414d9 first version of empty entries in tables 
(so that, in the future, tables can contain regular nil entries)
 2018-02-23 10:16:18 -03:00
Roberto Ierusalimschy 477ca2fe8c some reorganization in 'lobject.h' 
(just moving stuff around)
 2018-02-22 14:28:10 -03:00
Roberto Ierusalimschy ca6fe7449a userdata can have multiple user values 2018-02-20 13:52:50 -03:00
Roberto Ierusalimschy 1afd5a152d more generic way to handle 'gclist' 2018-02-19 17:06:56 -03:00
Roberto Ierusalimschy daff7c3b4d small corrections in generational mode 
(cannot call finalizers in emergency collections +
 should set everything before calling finalizers)
 2018-02-05 15:14:54 -02:00
Roberto Ierusalimschy e2b15aa21d janitor work on casts 2018-01-28 13:13:26 -02:00
Roberto Ierusalimschy cf7eff45f3 keep control of stack top in Lua functions concentrated in 'luaV_execute' 2017-12-28 13:42:57 -02:00
Roberto Ierusalimschy 1d5b885437 when running Lua code, there is no need to keep 'L->top' "correct"; 
set it only when needed.
 2017-12-20 12:58:05 -02:00
Roberto Ierusalimschy e663a24ab0 more freedom in handling memory-allocation errors (not all allocations 
automatically raise an error), which allows fixing a bug when resizing
a table.
 2017-12-08 15:28:25 -02:00
Roberto Ierusalimschy 421e459684 'luaS_resize' can raise memory errors 2017-12-01 15:38:49 -02:00
Roberto Ierusalimschy ac78b914b6 warnings from Visual Studio /W3 2017-11-30 13:37:16 -02:00
Roberto Ierusalimschy 599f1742c6 detail (typo in comments) 2017-11-23 17:29:04 -02:00
Roberto Ierusalimschy ad0704e40c back to 'CallInfo' (no gains with its removal) 2017-11-07 11:25:26 -02:00
Roberto Ierusalimschy 54eb35a8aa more fields moved out of 'CallInfo' 2017-11-03 10:12:30 -02:00
Roberto Ierusalimschy de9128d09d do not mess up the debt when the collector is not running 2017-10-31 13:29:28 -02:00
Roberto Ierusalimschy 1d8920dd7f some cleaning in GC parameters 2017-10-11 09:38:45 -03:00
Roberto Ierusalimschy 029d269f4d bug: dead keys with nil values can stay in weak tables 2017-08-31 13:14:41 -03:00
Roberto Ierusalimschy f96497397a new type 'StackValue' for stack elements 
(we may want to put extra info there in the future)
 2017-06-29 12:06:44 -03:00
Roberto Ierusalimschy 73ec04fcf3 no more 'DEADKEY'. Table traversals do not need to consider dead keys; 
if the key is dead, it cannot be given to 'next'. Instead, we now
use a 'table' tag without the collectable bit, which makes it
a unique tag good enough to reserve space.
 2017-06-12 11:21:44 -03:00
Roberto Ierusalimschy b6f87491af in hash nodes, keys are stored in separate pieces to avoid wasting 
space with alignments
 2017-06-09 13:48:44 -03:00
Roberto Ierusalimschy 4bc33d64de avoid overflows in computation of step size 2017-06-01 16:16:34 -03:00
Roberto Ierusalimschy 72d82a296c revamping the incremental collector 
Some simplifications (not counting bytes, couting only slots visited;
no more 'gcfinnum'); more GC parameters; using vararg in 'lua_gc' to
set parameters in different GC modes
 2017-05-26 16:14:29 -03:00
Roberto Ierusalimschy 2376eb6347 barrier for prototype's cache (with new gray list 'protogray' to keep 
prototypes to have their caches visited again) + constant 'MAXMISS'
 2017-05-04 10:32:01 -03:00
Roberto Ierusalimschy 8634b2a011 added 'cachemiss' field to prototype to avoid wasting time checking 
hits that fail too often
 2017-04-30 17:43:26 -03:00
Roberto Ierusalimschy f399e6705f ensures that "collectgarbage'step'" in generational mode does a 
minor collection
 2017-04-24 14:52:18 -03:00
Roberto Ierusalimschy 69371c4b84 'KGC_NORMAL' -> 'KGC_INC' + emergency GC signalled by flag (instead 
of mode)
 2017-04-24 13:59:26 -03:00
Roberto Ierusalimschy c354211744 small bug in generational control 2017-04-20 15:24:33 -03:00
Roberto Ierusalimschy c7bdc0e0e8 first version of control for the generational collector 2017-04-19 14:02:50 -03:00
Roberto Ierusalimschy 16001acb15 small corrections + removal of debugging functions 'count' and 
'printgray'.
 2017-04-12 15:01:40 -03:00
Roberto Ierusalimschy 0c8a7e071b 'mainthread' lives in 'allgc' list, like everybody else 2017-04-11 16:00:27 -03:00
Roberto Ierusalimschy a3d36fe283 Upvalues collected like everything else (with mark-sweep) instead 
of reference count (simpler and better for generational mode)
 2017-04-11 15:41:09 -03:00
Roberto Ierusalimschy 9569ad6b0d Comments for generational collector 2017-04-10 10:33:04 -03:00
Roberto Ierusalimschy 2331e1beec small changes in 'luaC_upvalbarrier' 2017-04-06 10:08:56 -03:00
Roberto Ierusalimschy e4287da3a6 generational collector (still not complete) 2017-04-05 13:50:51 -03:00
Roberto Ierusalimschy f5f3df3bd1 generational collection: new attempt (still incomplete) 2017-02-23 18:07:34 -03:00
Roberto Ierusalimschy 2a235312f0 detail (removing spaces at end of lines) 2016-12-22 11:08:50 -02:00
Roberto Ierusalimschy 7b1fba69b7 using 'lastfree == NULL' to signal that table is using the dummy 
node for its hash part + new macro 'allocsizenode'
 2016-11-07 10:38:35 -02:00
Roberto Ierusalimschy 138d00176c new flag in 'CallInfo.callstatus' to tell whether function is running 
as a finalizer
 2016-10-19 10:31:42 -02:00
Roberto Ierusalimschy 8d4feb504f do not try to ensure that 'sweepgc' points to a live object 
when entering sweep phase ('entersweep'); that may be too
expensive to be done still inside the atomic step. Walking
one single object more often than not will work.
 2016-03-31 16:02:03 -03:00
Roberto Ierusalimschy 03412af06e detail (removed fixed argument to function 'callallpendingfinalizers') 2015-12-10 16:12:30 -02:00
Roberto Ierusalimschy 7485512384 added comment and assert about dead keys 2015-11-03 16:10:44 -02:00
Roberto Ierusalimschy ff1289a361 in 'luaD_call', use two functions instead of one with fixed boolean 
argument
 2015-11-02 16:48:07 -02:00
Roberto Ierusalimschy cd73f3ccc5 now that we have a counter for CallInfos, use it for a more 
accurate value for the memory used by a thread
 2015-11-02 14:19:29 -02:00