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55 Commits

Author SHA1 Message Date
Roberto Ierusalimschy 413a393e62 Stack indices changed to union's 
That will allow to change pointers to offsets while reallocating
the stack.
 2022-10-29 12:06:37 -03:00
Roberto Ierusalimschy 196bb94d66 Bug: 'lua_settop' may use an invalid pointer to stack 2022-05-25 17:41:39 -03:00
Roberto Ierusalimschy 4e47f81188 New implementation for to-be-closed variables 
To-be-closed variables are linked in their own list, embedded into the
stack elements. (Due to alignment, this information does not change
the size of the stack elements in most architectures.)  This new list
does not produce garbage and avoids memory errors when creating tbc
variables.
 2021-02-09 14:00:05 -03:00
Roberto Ierusalimschy b07fc10e91 Allow yields inside '__close' metamethods 
Initial implementation to allow yields inside '__close' metamethods.
This current version still does not allow a '__close' metamethod
to yield when called due to an error. '__close' metamethods from
C functions also are not allowed to yield.
 2021-01-13 13:54:10 -03:00
Roberto Ierusalimschy 7af27ef59d Cleaner handling of errors in '__close' metamethods 
Instead of protecting each individual metamethod call, protect the
entire call to 'luaF_close'.
 2020-12-28 11:40:30 -03:00
Roberto Ierusalimschy 5f83fb6582 Details 2019-11-18 14:54:06 -03:00
Roberto Ierusalimschy 9e6807c3c9 Do not collect open upvalues 
Open upvalues are kept alive together with their corresponding
stack. This change makes a simpler and safer fix to the issue in
commit 440a5ee78c, about upvalues in the list of open upvalues
being collected while others are being created. (That previous fix
may not be correct.)
 2019-07-22 09:41:10 -03:00
Roberto Ierusalimschy 440a5ee78c Fixed bug for emergency collection in upvalue creation 
When creating an upvalue, an emergency collection can collect the
previous upvalue where the new one would be linked. The following
code can trigger the bug, using valgrind on Lua compiled with the
-DHARDMEMTESTS option:

  local x; local y
  (function () return y end)();
  (function () return x end)()
 2019-07-19 12:13:00 -03:00
Roberto Ierusalimschy fdc25a1ebf New functions 'lua_resetthread' and 'coroutine.kill' 
New functions to reset/kill a thread/coroutine, mainly (only?) to
close any pending to-be-closed variable. ('lua_resetthread' also
allows a thread to be reused...)
 2018-12-13 13:07:53 -02:00
Roberto Ierusalimschy 3c7dc52909 Handling of memory errors when creating to-be-closed upvalues 2018-10-18 16:15:09 -03:00
Roberto Ierusalimschy bd96330d03 First "complete" implementation of to-be-closed variables 
Still missing:
- handling of memory errors when creating upvalue (must run closing
method all the same)
- interaction with coroutines
 2018-10-17 10:44:42 -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 38d3bc8909 using 'offsetof' to compute the size of parts of a structure 2018-02-25 10:40:00 -03:00
Roberto Ierusalimschy e2b15aa21d janitor work on casts 2018-01-28 13:13:26 -02:00
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 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 cdd26700e8 definition for 'MAXUPVAL' moved for a more "private" place and its 
value and comment corrected to reflect current implementation
 2015-01-13 13:49:11 -02:00
Roberto Ierusalimschy 89b56e7d84 more precision between closure types ('LClosure' x 'CClosure') 2014-06-19 15:27:20 -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 2e2c109daf type of 'refcount' changed to lu_mem (to ensure there will be no 
overflows)
 2013-09-11 12:17:00 -03:00
Roberto Ierusalimschy af35c7f398 upvalues collected by reference count 2013-08-27 15:53:35 -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 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 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 545f43065f 'luaF_newLclosure' gets prototype of new closure as argument 2010-06-04 10:06:15 -03:00
Roberto Ierusalimschy 064e406f67 no more fenvs! 2010-03-26 17:58:11 -03:00
Roberto Ierusalimschy 8718fda9b2 added LUAI_FUNC to functions not in the API 2005-04-25 16:24:10 -03:00
Roberto Ierusalimschy 7d45a5f48f C functions and userdata also have environments 2005-02-18 10:40:02 -02:00
Roberto Ierusalimschy 334ba8132b cleaner way to remark open upvalues 2005-01-18 15:18:09 -02:00
Roberto Ierusalimschy 47fc57a252 `TObject' renamed to `TValue' + other name changes and better assertions 
for incremental garbage collection
 2003-12-10 10:13:36 -02:00
Roberto Ierusalimschy 5ee63257f9 macros for closure sizes are global 2003-11-24 16:50:36 -02:00
Roberto Ierusalimschy c51bcf4796 it's ok to dump functions with upvalues 2003-10-20 15:42:41 -02:00
Roberto Ierusalimschy ab9e062928 name changes to avoid name collision between macros and variables 2003-03-18 09:50:04 -03:00
Roberto Ierusalimschy 3941af53ad first implementation of independent global table per function 2002-06-20 17:41:46 -03:00
Roberto Ierusalimschy 413fc7334b new implementation for lua upvalues (sugested by E.T.): simpler and solves 
a bug for multi-stacks
 2001-11-29 18:22:22 -02:00
Roberto Ierusalimschy 72659a0605 no more explicit support for wide-chars; too much troble... 2001-11-28 18:13:13 -02:00
Roberto Ierusalimschy 15462edb0f new definitions for closure structures 2001-10-02 13:45:03 -03:00
Roberto Ierusalimschy abdbe883a8 first implementation of unrestricted static scoping 2001-09-07 14:39:10 -03:00
Roberto Ierusalimschy 39b7978329 first (big) step to support wide chars 2001-02-23 14:17:25 -03:00
Roberto Ierusalimschy 0183b8030c `free' gets size of the block: complete control over memory use 2000-12-28 10:55:41 -02:00
Roberto Ierusalimschy dad808a73a new way to count `nblocks' for GC (try to count bytes). 2000-09-29 09:42:13 -03:00
Roberto Ierusalimschy afef009fce new version of debug system 2000-06-26 16:28:31 -03:00
Roberto Ierusalimschy 73aa465a8e some name changes 2000-03-10 15:37:44 -03:00
Roberto Ierusalimschy acdb0b741e comments. 1999-12-27 15:33:22 -02:00
Roberto Ierusalimschy 29ede6aa13 first implementation of multiple states (reentrant code). 1999-11-22 11:12:07 -02:00
Roberto Ierusalimschy 8e7451512f some more `const's 1999-10-14 17:46:57 -02:00
Roberto Ierusalimschy 4343420d4d simplified version of `gc' tag method (only for userdata now). 1999-10-04 15:51:04 -02:00
Roberto Ierusalimschy c787dccd9b "const" !!! 1999-08-16 17:52:00 -03:00