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Author SHA1 Message Date
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
Roberto Ierusalimschy
41964648ee long strings are created directly in final position when possible 
(instead of using an auxiliar buffer to first create the string
and then allocate the final string and copy result there)
 2015-09-08 12:41:05 -03:00
Roberto Ierusalimschy
2b61360d82 avoid overflows (detected with 'clang -ftrapv') 2015-07-13 10:30:03 -03:00
Roberto Ierusalimschy
b436ed58a3 'clearapihash' -> 'luaS_clearcache' and moved to 'lstring.c' (which 
keeps all code related to this cache)
 2015-03-25 10:42:19 -03:00
Roberto Ierusalimschy
2ae2e6408e avoid testing for NULL when marking objects that cannot be NULL 2015-03-04 10:51:55 -03:00
Roberto Ierusalimschy
a80cada914 new cache for interning strings 2015-03-04 10:31:21 -03:00
Roberto Ierusalimschy
7e2015a46d size of short strings stored in a single byte, to reduce the size 
of struct 'TString'
 2015-01-16 14:54:37 -02:00
Roberto Ierusalimschy
88ef06f4f3 comments were wrong (not updated about several changes) 2014-12-20 11:58:15 -02:00
Roberto Ierusalimschy
28fdbcf393 added include for 'lprefix.h', for stuff that must be added before 
any other header file
 2014-11-02 17:19:04 -02:00
Roberto Ierusalimschy
4542fb9f78 comments (a few extra quotes around identifiers) 2014-10-30 16:53:28 -02:00
Roberto Ierusalimschy
e9885efc7c added comment and assert about an (impossible) division by zero 2014-10-29 13:02:53 -02:00
Roberto Ierusalimschy
bdf566a8a3 `name' in comments changed to 'name' 2014-10-25 09:50:46 -02:00
Roberto Ierusalimschy
2f4d429071 details (comments) 2014-10-03 09:54:57 -03:00
Roberto Ierusalimschy
3a15c7ce43 size for array part of a table ('sizearray') changed from 'int' to 
'unsigned int', which allows twice as many elements in the array part
 2014-09-04 15:15:29 -03:00
Roberto Ierusalimschy
0a6b58c3aa weak tables that must be retraversed are kept in 'grayagain' list 
until atomic phase (instead of going to their special lists) +
more comments
 2014-09-03 13:54:41 -03:00
Roberto Ierusalimschy
df608f842a 'linktable' -> 'linkgclist' (and used for all links with 'gclist') 2014-09-01 14:37:11 -03:00
Roberto Ierusalimschy
07c7fdb9df simpler definition for 'setobj' (trust the compiler for the assignment) 2014-07-29 13:22:24 -03:00
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
2898e2fd12 removed useless assertion (gcstate != GCSpause already implied by 
other assertions) and wrong assertion (setmetatable uses this barrier
for tables too)
 2014-07-19 11:44:19 -03:00
Roberto Ierusalimschy
bb12903120 type 'Udata' refers directly to structure inside the union (union 
used only for aligning purposes now)
 2014-07-18 11:46:47 -03:00
Roberto Ierusalimschy
ca41b43f53 type 'TString' refers directly to the structure inside the union 
(union used only for size purposes)
 2014-07-18 10:36:14 -03:00
Roberto Ierusalimschy
56137d58ff added check for conversion 'obj2gco' (and corrections for small 
problems detected by this check)
 2014-07-18 09:17:54 -03:00
Roberto Ierusalimschy
9aec500a26 no need for field 'gch' anymore 2014-07-17 14:27:49 -03:00
Roberto Ierusalimschy
b9dcf9974d detail (typos in comments) 2014-06-30 16:48:08 -03:00
Roberto Ierusalimschy
4d696c45b9 simpler handling of 'GCScallfin' state + more comments 2014-05-25 16:08:32 -03:00
Roberto Ierusalimschy
4a24883674 'GCmemtrav' does not need to track the entire collection, only each 
single step individually
 2014-04-04 14:01:04 -03:00
Roberto Ierusalimschy
f61ceee708 LUAI_FUNC is being used only in header files 2014-04-02 13:44:42 -03:00
Roberto Ierusalimschy
0d745ed04c more precise estimation (GCestimate) for total bytes in use after 
a GC cycle
 2014-04-01 11:06:59 -03:00
Roberto Ierusalimschy
da4811238a details (typos in comments) 2014-03-21 10:52:33 -03:00
Roberto Ierusalimschy
c86b9da022 userdata can have any Lua value as uservalue 2014-02-19 10:52:42 -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
d764cc5522 new list 'twups' to allow traversal of upvalues from dead threads 
(+ fixed some problems with cycles involving those upvalues)
 2014-02-18 10:39:37 -03:00
Roberto Ierusalimschy
ffa96d988d field 'op' renamed to 'open' 2014-02-15 11:12:01 -02:00
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
90b0ac6495 limit to 'gcstepmul' imposed by 'lua_gc' (+ some details in 'lgc.c') 2014-02-13 15:25:20 -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
6b30774469 detail (better presentation for 'luaC_step') 2014-02-11 10:28:47 -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
88e23f508c details 2013-12-13 13:42:08 -02:00
Roberto Ierusalimschy
c8585efc78 use goto to implement a tail call in 'reallymarkobject' 2013-12-13 13:17:00 -02:00
Roberto Ierusalimschy
4c6dfc342b CallInfo lists shrinks together with their associated stacks 2013-09-17 12:40:06 -03:00
Roberto Ierusalimschy
686e57cf9c GC local pause configurable 2013-09-13 13:21:52 -03:00
Roberto Ierusalimschy
6ca7b63bce check for shrinking string table done only at the end of a GC cycle 2013-09-11 11:56:15 -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
7061fe1d56 detail: 'sweepstep' checks end of phase after calling 'sweeplist', so 
that phases with small lists return 0 at the first call to 'sweepstep'
 2013-09-11 10:24:55 -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
b5e75fde4e bug: local collection must clear rest of stack 2013-08-29 10:34:16 -03:00
Roberto Ierusalimschy
9a871dd3db tables and userdata all go to local list, too 2013-08-28 15:30:26 -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
742b7377d3 Lua closures go to local, too 2013-08-26 09:41:10 -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
78b941039d change to allow collector to stop when it goes to the atomic phase 
(just for debugging)
 2013-08-07 12:39:09 -03:00
Roberto Ierusalimschy
623e388bb4 double-linked list of all upvalues elliminated and changed to a 
traversal of all non-marked threads
 2013-08-07 09:18:11 -03:00
Roberto Ierusalimschy
677d90165f no more generational collection !!! 2013-08-05 13:58:28 -03:00
Roberto Ierusalimschy
c37b7b3cca bug: garbage collector can trigger too many times in recursive loops, 
because it was not computing the size of CallInfo structures in threads
 2013-04-26 15:26:49 -03:00
Roberto Ierusalimschy
75250a237c typos in comments 2013-03-16 18:10:18 -03:00
Roberto Ierusalimschy
437a49be5e cast to avoid warnings 2013-03-15 15:33:36 -03:00
Roberto Ierusalimschy
a799ed5af9 more precise control for GC pause (based on threshold) 2012-10-19 16:00:33 -03:00
Roberto Ierusalimschy
fdae4b9453 removed commented-out line (for debugging) 2012-10-03 09:36:17 -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
4fc15bbfb7 major collections in generational mode are triggered by comparison with 
the memory estimate from last major collection
 2012-07-02 10:40:05 -03:00
Roberto Ierusalimschy
c510d94549 includes counts from 'sweeptolive' in cost of atomic step 2012-05-31 18:28:59 -03:00
Roberto Ierusalimschy
ab2c3d5cde small bug in error handling of finalizers (cannot call lua_tostring 
inside the core) + small bug in luaC_checkfinalizer (when avoiding
remove object being sweeped from sweep list) + small changes in GC
pace control (for the atomic part)
 2012-05-31 17:26:14 -03:00
Roberto Ierusalimschy
6fcdfc6d4f bug: object being moved to 'finobj' list might not be sweeped by 
the collector
 2012-05-30 13:01:10 -03:00
Roberto Ierusalimschy
6efffb9acd only count in 'atomic' objects marked for the first time 2012-05-29 14:52:17 -03:00
Roberto Ierusalimschy
51e8f08e60 more efficient way to apply 'stepmul' + some changes in GC parameters 2012-05-28 17:41:00 -03:00
Roberto Ierusalimschy
e29f3a5751 definition of 'GCSTEPSIZE' moved to header file + small changes 2012-05-23 12:43:14 -03:00
Roberto Ierusalimschy
8e7149f496 detail ('char' should be 'const char') 2012-05-22 15:38:56 -03:00
Roberto Ierusalimschy
086da10dac merge of fields 'lastmajormem' (used in gen. mode) and 'estimate' 
(used in inc. mode)
 2012-05-22 14:50:39 -03:00
Roberto Ierusalimschy
b36b4b521f try to avoid sweeping new objects created with new white (and 
therefore not collectable in the current cycle)
 2012-05-22 14:32:25 -03:00
Roberto Ierusalimschy
398811a313 simpler macro 'luaC_condGC' + better 'step' in 'lua_gc' + 
micro bug in 'luaC_checkfinalizer' (current sweep object could be
removed from 'allgc' list)
 2012-05-21 10:18:10 -03:00
Roberto Ierusalimschy
2a66b34f72 revamp of the GC pace control; more like 5.1: any X Kbytes allocated 
makes the GC handle f(X) Kbytes of objects
 2012-05-20 17:36:44 -03:00
Roberto Ierusalimschy
ea980fdeef removed 'stringmark' trick 2012-05-14 14:52:56 -03:00
Roberto Ierusalimschy
31829ad177 test for whether collector is running moved from function to 
macro 'luaC_condGC'.
 2012-05-11 16:22:33 -03:00
Roberto Ierusalimschy
3cadc37f47 no more 'Proto' objects on the stack. Protos are anchored on outer 
Protos or on a Closure, which must be created before the Proto.
 2012-05-08 10:53:33 -03:00
Roberto Ierusalimschy
a4b96ce9a3 first implementation of long strings 2012-01-25 19:05:40 -02:00
Roberto Ierusalimschy
fb6eee2805 Lua never uses Ã'assert' (it is always 'lua_assert') 2012-01-23 20:59:02 -02:00
Roberto Ierusalimschy
fd22ccd6d0 object tag keeps variant bits too -> no need for 'isC' field in 
Closures + more strick typing for closure variants
 2012-01-20 20:05:50 -02:00
Roberto Ierusalimschy
01747f2c24 error message: "tag method" -> "metamethod" 2011-12-02 11:18:41 -02:00
Roberto Ierusalimschy
217b65e6d9 avoid some warnings about converting 32-bit shifts into 64-bit results 2011-11-28 15:25:48 -02:00
Roberto Ierusalimschy
788a0ecd27 'luaC_separateudata' renamed to 'separatetobefnz' and called only 
from 'lgc.c'
 2011-10-03 14:54:25 -03:00
Roberto Ierusalimschy
bc90cf4b83 retraverse all gray lists together to avoid traversing some weak 
tables twice (as they may change lists when traversed)
 2011-10-03 13:22:05 -03:00
Roberto Ierusalimschy
87912786af dead objects are not collectable. 2011-09-24 18:12:01 -03:00
Roberto Ierusalimschy
95ed6c1127 better(?) scheme for cleaning weak tables; all ressurected objects 
are removed from weak values before finalization
 2011-09-24 18:00:40 -03:00
Roberto Ierusalimschy
45c346645c avoid clearing ephemeron tables that have nothing to be cleaned 
(no white elements)
 2011-09-19 14:03:38 -03:00
Roberto Ierusalimschy
74b0bb3a45 macro 'checkconsistency' moved to this file, as it is used only 
here
 2011-05-05 16:42:25 -03:00
Roberto Ierusalimschy
868ff40339 full collection does not restart collector + avoid changing GC 
state if an error happens in a step
 2010-12-29 16:00:23 -02:00
Roberto Ierusalimschy
551b076f1c change in the relationship between totalbytes and GCdebt - luaM_realloc_ 
is too critical to update two counters
 2010-12-20 17:40:07 -02:00
Roberto Ierusalimschy
737f119187 better control for GC running or stopped 2010-12-20 16:17:46 -02:00
Roberto Ierusalimschy
350cc4bcb6 'micro' bug: when closing state, old objects are finalized (breaking 
assertion)
 2010-12-03 09:48:25 -02:00
Roberto Ierusalimschy
9b7a12c46d finalizers (__gc) for tables 2010-11-26 12:32:31 -02:00
Roberto Ierusalimschy
4590a89b32 corrected warnings from different compilers (mostly casts and small 
details)
 2010-10-25 17:01:37 -02:00
Roberto Ierusalimschy
6828f6d427 new parameter 'majorinc' to control frequency of major collections 
in generational mode
 2010-09-03 11:14:01 -03:00
Roberto Ierusalimschy
a71c5f6f53 typo in comments 2010-06-30 11:11:17 -03:00
Roberto Ierusalimschy
d9ea6eca7c macro 'key2tal' replaced by 'gkey' (as both were equal) 2010-06-25 09:18:10 -03:00
Roberto Ierusalimschy
fabe4ec487 better barrier for prototypes 2010-06-07 13:55:34 -03:00
Roberto Ierusalimschy
575074fd85 Lua closures are cached for reuse 2010-06-04 10:25:10 -03:00
Roberto Ierusalimschy
e94fac8956 bug: generational collection was not running collector! (must write 
a test for this...)
 2010-06-02 15:36:58 -03:00
Roberto Ierusalimschy
3d45a8eb1c really stop collection during finalizers 2010-05-17 17:39:31 -03:00
Roberto Ierusalimschy
4fd76b8148 avoid "strong" cast 2010-05-11 17:49:26 -03:00
Roberto Ierusalimschy
1c1a98e872 corrected some places where an old object could end up in front 
of a new one + minimal documentation about this problem
 2010-05-10 15:23:45 -03:00
Roberto Ierusalimschy
c006f085d9 new macro 'resetoldbit' 2010-05-10 13:46:49 -03:00
Roberto Ierusalimschy
de97177744 avoid 'else assert' (which may result in an empty else) 2010-05-07 15:43:24 -03:00
Roberto Ierusalimschy
0fac33da9e bug: incremental sweep was not cleaning old bits (as it stopped in the 
first old object) + bug: moving udata to 'udgc' list might put old
object in front a new one + some new macros + generational mode may
be in 'pause' state (it just skips 'markroot')
 2010-05-07 15:19:36 -03:00
Roberto Ierusalimschy
25951e0ea5 some cleaning in 'sweeplist' (threads do not need to be traversed 
if they are going to be collected + use of bit masks to unify
differences in generational and incremental modes)
 2010-05-06 15:18:07 -03:00
Roberto Ierusalimschy
d2ea5b00b7 new function 'luaC_changemode' + 
bug: objects entering the 'allgc' list must have their OLDBIT cleared
(upvalues being cleared) + bug: in 'checkSizes', KGC_EMERGENCY is
stored in 'gckind' field, not in 'gcstate' + current white changes when
entering sweep phase (so there are dead objects only in that phase)
 2010-05-05 15:58:36 -03:00
Roberto Ierusalimschy
7444b5a1d5 better documentation of GC costs 2010-05-05 10:39:58 -03:00
Roberto Ierusalimschy
3e662cec89 full GC must run finalizers only after finishing everything else 
(including a return to generational mode if needed)
 2010-05-04 15:09:06 -03:00
Roberto Ierusalimschy
aa73403ba4 no need of a KGC_FORCED collection kind; it has the same behavior of 
a normal collection
 2010-05-03 14:39:48 -03:00
Roberto Ierusalimschy
0c27de2e7b no more 'finalize' phase in GC; finalizers are called along the 
entire cycle
 2010-05-03 14:33:39 -03:00
Roberto Ierusalimschy
d25f7f9d78 items in 'tobefnz' are kept black (as before recent change) and changed 
to white only when needed (being moved to 'allgc' when not keeping
invariant).
 2010-05-03 08:55:40 -03:00
Roberto Ierusalimschy
4d871ee973 "gray lists" only need to be valid when 'keepinvariant' is true 2010-04-30 15:37:14 -03:00
Roberto Ierusalimschy
23001d8607 nasty GC bug: upvalue must be turned white when not keeping invariant, 
but barrier was not being called when uv->v were already white.
 2010-04-29 18:43:36 -03:00
Roberto Ierusalimschy
aaa5d7adab 'luaC_linkupval' moved into 'lfunc.c' code + new way to control GC speed 2010-04-29 14:32:40 -03:00
Roberto Ierusalimschy
00114a95b2 lots of new comments + small changes in loop controls + other small 
"janitor work"
 2010-04-26 14:58:00 -03:00
Roberto Ierusalimschy
4aaf0ef75c "to-be-finalized" objects marked and sweeped like all other objects 2010-04-20 17:15:30 -03:00
Roberto Ierusalimschy
d20ff60615 new macro LUA_NUMTAGS 2010-04-12 13:07:29 -03:00
Roberto Ierusalimschy
a09c8d7beb cannot sweep main thread in sweepstring phase 2010-04-05 11:15:35 -03:00
Roberto Ierusalimschy
e54668b696 added proper code to trace garbage collection 2010-04-02 11:37:41 -03:00
Roberto Ierusalimschy
a8d3aa14fd global table now is only kept in the registry 2010-03-29 14:43:14 -03:00
Roberto Ierusalimschy
064e406f67 no more fenvs! 2010-03-26 17:58:11 -03:00
Roberto Ierusalimschy
5c87f61e6b major collections in generational mode 2010-03-25 16:37:23 -03:00
Roberto Ierusalimschy
3aa9598177 'mainthread' is not inserted in the 'allgc' list anymore, but swept 
separately.
 2010-03-25 10:06:36 -03:00
Roberto Ierusalimschy
64d39ed1b6 generational mode no longer sweep old objects 2010-03-24 12:51:10 -03:00
Roberto Ierusalimschy
4433dbb5f5 userdata with finalizers are kept in a separated list ('udgc'), instead 
of at the end of 'rootgc' (which was renamed to 'allgc', as it is not
"root" in the usual meaning for collectors)
 2010-03-24 10:07:01 -03:00
Roberto Ierusalimschy
5cb128ea54 BUG: emergency collector might resize 'strt' (string table) when 
creating a new string
+ atomic and markroot steps has some cost
+ full collection must leave collector in proper state when mode
is generational
 2010-03-23 17:16:06 -03:00
Roberto Ierusalimschy
74123e9686 draft version of a generational mode for garbage collection. (Not well 
tested; no major collections; ...)
 2010-03-22 15:28:03 -03:00
Roberto Ierusalimschy
f84b575cfa no more pseudoindex LUA_GLOBALSINDEX; global table now accessible 
through registry
 2009-12-22 13:32:50 -02:00
Roberto Ierusalimschy
0bbdddc86b allocator function receives the tag of object being allocated in 'osize' 
when 'ptr' is NULL.
 2009-12-17 13:46:44 -02:00
Roberto Ierusalimschy
8da245bfd2 better to keep GC state numbers sequential, to optimize switch in 
'singlestep'
 2009-12-11 19:31:14 -02:00
Roberto Ierusalimschy
a2a2abcba4 new function 'luaC_runtilstate' to advance GC until a "valid" state 2009-12-11 17:14:59 -02:00