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133 Commits

Author SHA1 Message Date
Roberto Ierusalimschy e8c779736f Removed internal cache for closures 
The mechanism of "caching the last closure created for a prototype to
try to reuse it the next time a closure for that prototype is created"
was removed. There are several reasons:

- It is hard to find a natural example where this cache has a measurable
impact on performance.

- Programmers already perceive closure creation as something slow,
so they tend to avoid it inside hot paths. (Any case where the cache
could reuse a closure can be rewritten predefining the closure in some
variable and using that variable.)

- The implementation was somewhat complex, due to a bad interaction
with the generational collector. (Typically, new closures are new,
while prototypes are old. So, the cache breaks the invariant that
old objects should not point to new ones.)
 2018-11-01 13:21:00 -03:00
Roberto Ierusalimschy f99509581e Removed extra information from RCS keyword strings 
Version numbers and dates (mostly wrong) from RCS keyword strings
removed from all source files; only the file name are kept.
 2018-08-23 14:26:12 -03:00
Roberto Ierusalimschy 992b6d2712 no more 'TESTGRAYBIT' (to free this bit for real uses) 2018-06-11 11:19:50 -03:00
Roberto Ierusalimschy 1afd5a152d more generic way to handle 'gclist' 2018-02-19 17:06:56 -03:00
Roberto Ierusalimschy a131eae925 default for minor collection intervals a little larger 2018-02-05 15:14:29 -02:00
Roberto Ierusalimschy e2b15aa21d janitor work on casts 2018-01-28 13:13:26 -02:00
Roberto Ierusalimschy 1d8920dd7f some cleaning in GC parameters 2017-10-11 09:38:45 -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 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 c0836dda74 avoid empty macro arguments (invalid in C89) 2015-12-21 11:02:14 -02:00
Roberto Ierusalimschy 3ad55386c4 'condchangemem' also may need to run 'pre'/'pos' 2015-10-21 16:15:15 -02:00
Roberto Ierusalimschy caf8278710 added comments 2015-10-20 16:00:19 -02:00
Roberto Ierusalimschy f7670781cf cleaner definition for 'luaC_condGC', using 'pre'/'pos' parameters 2015-10-20 15:56:21 -02:00
Roberto Ierusalimschy 20b9e59441 barrier macros rewritten as expressions 2015-08-03 16:40:42 -03:00
Roberto Ierusalimschy bdf566a8a3 `name' in comments changed to 'name' 2014-10-25 09:50:46 -02:00
Roberto Ierusalimschy 3c6d0aaa7d 'iswhite' and related macros now can work directly on any object 
(no need to convert to 'GCObject')
 2014-07-19 12:14:46 -03:00
Roberto Ierusalimschy e43612aaf6 put the restriction that 'luaC_barrierback' works only on tables 
in its prototype
 2014-07-19 12:09:37 -03:00
Roberto Ierusalimschy 9aec500a26 no need for field 'gch' anymore 2014-07-17 14:27:49 -03:00
Roberto Ierusalimschy ed795d5ff4 detail (removed unused prototype) 2014-03-19 15:51:16 -03:00
Roberto Ierusalimschy 3f78de256e no need to keep threads in a different GC list, now that there is the 
'twups' list
 2014-02-18 10:46:26 -03:00
Roberto Ierusalimschy 1cce3e6842 change in the way 'collectgarbage("step", size)' interprets 'size' 
(mimicking the way the GC itself behaves when Lua allocates 'size'
Kbytes)
 2014-02-14 14:43:14 -02:00
Roberto Ierusalimschy de3b1c9b53 better control for number of finalizers called at each GC cycle 
(increases progressively)
 2014-02-13 12:46:38 -02:00
Roberto Ierusalimschy 733c58595b no more local collection 2014-02-13 10:11:34 -02:00
Roberto Ierusalimschy ba3586cc90 keep a single list of objects to be finalized (with local and non-local 
objects), to ensure finalization order
 2014-02-11 10:18:12 -02:00
Roberto Ierusalimschy 06156e7575 detail (setmetatable do not need to use a back GC barrier) 2013-09-11 17:15:31 -03:00
Roberto Ierusalimschy 4eeb1831be new names and better order for GC states (sweep first lists that 
can have dead objects)
 2013-09-11 11:47:08 -03:00
Roberto Ierusalimschy dd373a8f66 threads are kept in a separated GC list, linked after the main thread 2013-09-11 11:09:55 -03:00
Roberto Ierusalimschy d8aa8dd97e objects in list 'tobefnz' have a GC life-cycle like all others 
(specifically they are cleaned during sweep phase)
 2013-09-11 09:47:48 -03:00
Roberto Ierusalimschy 1150873447 'luaC_newobj' does not handle special cases; only special case 
now is threads, which do not use 'luaC_newobj' anymore.
 2013-09-11 09:26:14 -03:00
Roberto Ierusalimschy aeff4f79fa local collection now calls finalizers 2013-09-03 12:37:10 -03:00
Roberto Ierusalimschy 1bf4faec64 new GC state to sweep 'localgc' list + small changes in sweep control 2013-08-30 16:14:26 -03:00
Roberto Ierusalimschy 26629d0af1 details (a few casts moved from macro invocation to macro definition) 2013-08-29 10:49:57 -03:00
Roberto Ierusalimschy 90972ff136 LOCALBLACK changed to LOCALMARK and used also to control whether object 
is in 'localgc' list + luaC_newobj by default puts object in 'localgc'
list
 2013-08-27 17:04:00 -03:00
Roberto Ierusalimschy af35c7f398 upvalues collected by reference count 2013-08-27 15:53:35 -03:00
Roberto Ierusalimschy 50955e27f5 C functions and strings now go to the local list; first version 
of the local collector
 2013-08-23 10:34:54 -03:00
Roberto Ierusalimschy 0df6635711 "fixed" objects kept in a separated list (instead of being kept in 
'allgc' list with a bit marking them)
 2013-08-21 17:09:51 -03:00
Roberto Ierusalimschy ae800656c9 change in string table: string table is now independent of GC lists; all 
strings live in 'normal' GC lists
 2013-08-21 16:21:16 -03:00
Roberto Ierusalimschy 8f6b80aa1d GC bits SEPARATED and FINALIZEDBIT mixed in FINALIZEDBIT (with simpler 
control)
 2013-08-20 14:46:34 -03:00
Roberto Ierusalimschy 9eff921f8f "barrier" for link prototype->cache changed to be consistent with 
GC behavior (link is cleared to preserve invariant)
 2013-08-19 11:18:43 -03:00
Roberto Ierusalimschy 439d74e29f added 'local' bit (true => object is only refered by local variables) 2013-08-16 15:55:49 -03:00
Roberto Ierusalimschy 3679d33b02 barrier conditions rewritten to test first 'isblack' and then 'iswhite' 
(during a pause all objects are white, so 'isblack' fails much more
often than 'iswhite')
 2013-08-13 14:36:44 -03:00
Roberto Ierusalimschy 677d90165f no more generational collection !!! 2013-08-05 13:58:28 -03:00
Roberto Ierusalimschy ae1d318822 small bug: generational mode is always in 'propagate' mode only 
outside the collector: during collection of course it must go to
other modes.
 2012-09-11 09:53:08 -03:00
Roberto Ierusalimschy e4f609d0ee collector in generational mode must be in 'propagate' state when 
not running a collection
 2012-07-04 12:52:38 -03:00
Roberto Ierusalimschy e29f3a5751 definition of 'GCSTEPSIZE' moved to header file + small changes 2012-05-23 12:43:14 -03:00