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486 Commits

Author SHA1 Message Date
Roberto Ierusalimschy c90176f969 Complete implementation of to-be-closed variables 2018-10-22 14:55:51 -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 4cd1f4aac0 Towards "to closed" local variables 
Start of the implementation of "scoped variables" or "to be closed"
variables, local variables whose '__close' (or themselves) are called
when they go out of scope. This commit implements the syntax, the
opcode, and the creation of the corresponding upvalue, but it still
does not call the finalizations when the variable goes out of scope
(the most important part).

Currently, the syntax is 'local scoped name = exp', but that will
probably change.
 2018-10-08 10:42:07 -03:00
Roberto Ierusalimschy b114c7d487 Added "cost" for the use of C stack by a coroutine invocation. 
Resuming a coroutine uses more C stack than other operations (such as
function calls or recursive syntax). So, to avoid stack overflow
in recursive coroutine invocations, either LUAI_MAXCCALLS must be
too small or a coroutine invocation must "pay" a higher price.
New constant LUAL_COROCSTK ("COROutine C STaK") defines how much
is this price.
 2018-09-11 14:24:14 -03:00
Roberto Ierusalimschy 96f9643f33 Bug: wrong 'nCcalls' when resuming a coroutine 
The counter 'nCcalls' now includes the number of CallInfo structures
pre-allocated (so that these "potential" C calls can be made without
checking 'nCcalls'). So, when copying this value from a thread to
another, in 'lua_resume', it must be corrected to the number of
CallInfo structures in the thread being resumed.
 2018-07-11 16:11:50 -03:00
Roberto Ierusalimschy 34aa0c5bd7 new macros 'likely'/'unlikely' with hints for jump predictions 
(used only in errors for now)
 2018-05-30 11:25:52 -03:00
Roberto Ierusalimschy 02ed0b2c30 in 'luaD_poscall', there is no need to compute 'firstResult' when 'nres==0' 2018-05-22 09:02:36 -03:00
Roberto Ierusalimschy 4907444db9 'fTransfer' -> 'ftransfer' / 'nTransfer' -> 'ntransfer' 
(keep the standard of names in lower case)
 2018-03-16 12:33:34 -03:00
Roberto Ierusalimschy 6480e73599 details (avoid using non-C89 '//' comment) 2018-03-07 13:26:01 -03:00
Roberto Ierusalimschy 8c429311a3 typo in comment 2018-03-05 11:13:55 -03:00
Roberto Ierusalimschy ef8263f81f better names for macros for tags and types. 
rttype -> rawtt; ttyperaw -> withvariant; ttype -> ttypetag;
tnov -> ttype
 2018-02-26 11:16:05 -03:00
Roberto Ierusalimschy 422318f677 two new fields 'fTransfer'/'nTransfer' in 'lua_Debug' structure 
(for information about values being given and returned in function calls)
 2018-02-17 17:29:29 -02:00
Roberto Ierusalimschy 104d249ffb in return hook, 'top' must be corrected only if smaller than 'ci->top'. 
(It may be larger when returning multiple values, and then it must
be larger to preserve that stack slice.)
 2018-02-17 16:22:00 -02:00
Roberto Ierusalimschy 0682fe8169 some simplifications/optimizations in returns from Lua functions 2018-02-15 13:34:29 -02:00
Roberto Ierusalimschy b1379936cf vararg back to '...' (but with another implementation) 
new implementation should have zero overhead for non-vararg functions
 2018-02-09 13:16:06 -02:00
Roberto Ierusalimschy 4e0de3a43c details 2018-02-07 13:55:18 -02:00
Roberto Ierusalimschy 318a9a5859 new opcode 'PREPVARARG' 
(avoids test for vararg function in all function calls)
 2018-02-07 13:18:04 -02:00
Roberto Ierusalimschy 51280ef2ad call hooks for Lua functions called by 'luaV_execute' 2018-02-06 17:16:56 -02:00
Roberto Ierusalimschy dc0ab1e8ca warnings in VS (implicit casts from ptrdiff_t to int) 2018-01-29 14:21:35 -02:00
Roberto Ierusalimschy 89110986d7 bug in tailcall of vararg functions 
(when adjusting missing parameters)
 2018-01-28 11:39:52 -02:00
Roberto Ierusalimschy 53979dfe0d calling a vararg function needs to check GC 
(because it creates a new table)
 2018-01-28 10:08:04 -02:00
Roberto Ierusalimschy ab0a851db4 'luaD_tryfuncTM' can ensure it does not change the stack 2018-01-10 17:19:27 -02:00
Roberto Ierusalimschy 28323aeaa6 by-one error when filling missing arguments in a tail call 2017-12-29 13:44:51 -02:00
Roberto Ierusalimschy 8691612f01 when calling a hook, cannot decrease 'ci->top' (to preserve stack 
size if the stack is reallocated)
 2017-12-28 12:17:09 -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 4dc0be950a new macro 'isLuacode' (to distinguish regular Lua code from 
hooks, where C code can run inside a Lua function).
 2017-12-19 14:40:17 -02:00
Roberto Ierusalimschy b3f924bc69 'Proto->numparams' does not include vararg parameter 
(one less subtraction when calling functions...)
 2017-12-15 11:07:10 -02:00
Roberto Ierusalimschy 725c15a4ca when shrinking stack, always shrinks the CI list. 
(Stack overflow is not corelated to CI overflow anymore.)
 2017-12-12 09:57:30 -02:00
Roberto Ierusalimschy bfb88e99e9 'luaD_growstack' cannot raise any errors when 'raiseerror' is 
false (+ some comments)
 2017-12-11 10:43:40 -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 e0bece77d6 detail 2017-12-01 13:44:51 -02:00
Roberto Ierusalimschy c766e4103d 'luaV_execute' gets call info as extra argument (it is always 
available on call sites)
 2017-11-29 11:02:17 -02:00
Roberto Ierusalimschy 194a4f9710 small simplifications in 'luaD_poscall' 2017-11-23 16:29:41 -02:00
Roberto Ierusalimschy 196c87c9ce no more 'stackless' implementation; 'luaV_execute' calls itself 
recursively to execute function calls. 'unroll' continues all
executions suspended by an yield (through a long jump)
 2017-11-23 14:41:16 -02:00
Roberto Ierusalimschy 14c3aa12b5 more direct implementation for tail calls. 2017-11-21 12:18:03 -02:00
Roberto Ierusalimschy 5440b42f43 using 'trap' to stop 'luaV_execute' when necessary (tracing and 
to update its copy of 'base' when the stack is reallocated)
 2017-11-13 13:36:52 -02:00
Roberto Ierusalimschy 7d4828cc9f avoid accessing wrong union field 2017-11-13 10:26:30 -02:00
Roberto Ierusalimschy ad0704e40c back to 'CallInfo' (no gains with its removal) 2017-11-07 11:25:26 -02:00
Roberto Ierusalimschy 93fd67b793 no more 'CallInfo' structure 2017-11-04 10:57:02 -02:00
Roberto Ierusalimschy 6bb3e40a8d 'lua_Debug' not using 'CallInfo' 2017-11-03 18:41:05 -02:00
Roberto Ierusalimschy 472c560705 no more useful fields in CallInfo 2017-11-03 15:22:54 -02:00
Roberto Ierusalimschy 54eb35a8aa more fields moved out of 'CallInfo' 2017-11-03 10:12:30 -02:00
Roberto Ierusalimschy ba36180fd7 new API for 'lua_resume' + cleaning the uses of the 'extra' field in 
'CallInfo'
 2017-11-02 09:28:56 -02:00
Roberto Ierusalimschy b9e76be8a6 using 'L->func' when possible 2017-11-01 16:20:48 -02:00
Roberto Ierusalimschy c5482468fd baby steps to remove 'CallInfo': keeping 'L->func' correct 2017-10-31 15:54:35 -02:00
Roberto Ierusalimschy 6d998055c8 no more reference 'memerrmsg' + new reference to "n" 
(both can be retrieved by 'luaS_newliteral' without creating anything,
because they are fixed, but "n" deserves fast access while 'memerrmsg'
does not)
 2017-07-27 10:50:16 -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 c25380c28d details (using proper version of 'setobj') 2017-05-23 09:50:11 -03:00
Roberto Ierusalimschy 6d95de83c6 no more field 'base' in CallInfo (base is always equal to 'func + 1', 
with old/new vararg implementation)
 2017-05-13 10:54:47 -03:00
Roberto Ierusalimschy 5c8770f896 back to old-style vararg system (with vararg table collecting extra 
arguments)
 2017-05-13 10:04:33 -03:00
Roberto Ierusalimschy 24f6e236a3 'moveresults' and 'luaD_poscall' moved up in the file 2016-12-13 13:52:21 -02:00
Roberto Ierusalimschy 8edbf57fb8 detail (ANSI C does not accept empty arguments to macros) 2016-09-20 13:37:45 -03:00
Roberto Ierusalimschy 7fe1a4cff3 cleaner and more correct code for 'luaD_shrinkstack' (the old 
test "inuse <= LUAI_MAXSTACK" for stack overflow is not correct,
as the real maximum usable size is "LUAI_MAXSTACK - EXTRA_STACK")
 2016-09-08 13:36:26 -03:00
Roberto Ierusalimschy aeb4c6fff1 comments + removed unused variable 2016-09-05 15:53:02 -03:00
Roberto Ierusalimschy e4a9e6fcca do not eliminate varargs from functions that do not use varargs 
(confuses the debug lib and gains very little in performance)
 2016-08-01 16:51:24 -03:00
Roberto Ierusalimschy 9de2bb0d62 bug: When a coroutine tries to resume a non-suspended coroutine, 
it coud do some mess (and break C assertions) before detecting the error.
Now it tests for those errors before anything else.
 2016-07-29 14:12:44 -03:00
Roberto Ierusalimschy a051b3323e comments (about hooks vs signals) 2015-12-16 14:40:07 -02:00
Roberto Ierusalimschy d103312661 details (typos in comments) 2015-11-19 17:16:22 -02:00
Roberto Ierusalimschy 9a5d6aedb7 trying to optimize a little 'luaD_poscall' 2015-11-13 11:24:26 -02:00
Roberto Ierusalimschy e61ee8a036 in 'luaD_call', use two functions instead of one with fixed boolean 
argument + stack error handling in 'luaD_call' moved to a separated
function
 2015-11-02 16:48:49 -02:00
Roberto Ierusalimschy 8c1fb91802 macro 'incr_top' replaced by function 'luaD_inctop'. (It is not used 
in critical time pathes, can save a few bytes without the macro)
 2015-11-02 14:09:30 -02:00
Roberto Ierusalimschy c5363a1b58 in 'luaD_precall', in vararg functions, complete missing parameters 
only after moving them to final place (avoids checking the stack
again)
 2015-11-02 12:06:01 -02:00
Roberto Ierusalimschy ffd0d1232d using more "conventional" loops in 'luaD_poscall' (probably a little 
more efficient?)
 2015-11-02 09:48:59 -02:00
Roberto Ierusalimschy 6707ce6349 function prepares vararg only if it really uses them (chunks 
are always declared vararg but seldom uses them)
 2015-10-28 15:28:40 -02:00
Roberto Ierusalimschy ae515a346c comments for luaD_precall/luaD_poscall 2015-10-28 10:25:36 -02:00
Roberto Ierusalimschy 3cdf1d676b details (avoid 'case' inside block + avoid using one variable for 
two roles)
 2015-10-28 10:06:45 -02:00
Roberto Ierusalimschy 5bdee4f810 small changes to allow 'precall' to spend time preserving 'func' 
only when needed (that is, when stack actually changes)
 2015-10-21 16:40:47 -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 dcad08b76d details (use original type when saving variable's value) 2015-06-18 11:19:52 -03:00
Roberto Ierusalimschy d39bb51faa bug: interpreter cannot pop activation frame before calling return 
hook (as it may want to access local variables active by the end
of the function)
 2015-05-22 14:48:19 -03:00
Roberto Ierusalimschy 484bf14a6b calls to 'luaC_checkGC' in luaD_precall moved near to 'luaD_checkstack' 
(which is what can need memory)
 2015-03-30 13:05:23 -03:00
Roberto Ierusalimschy a30c66f0fc macro 'luai_apicheck'/'api_check' back with a 'lua_State' parameter 
(some people use it)
 2015-03-06 16:49:50 -03:00
Roberto Ierusalimschy 9a38c08011 no need to ensure any stack space for panic function + some changes 
in 'tryfuncTM' (small simplification)
 2014-11-11 15:13:39 -02:00
Roberto Ierusalimschy bfa0898312 bug: memory error in panic mode does not push error message on 
the stack + stack check in tryfuncTM + comments
 2014-11-10 15:42:04 -02:00
Roberto Ierusalimschy e75c0148c3 comments (references to "ANSI C" changed to "ISO C", which is the 
international name
 2014-11-02 17:33:33 -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 bdf566a8a3 `name' in comments changed to 'name' 2014-10-25 09:50:46 -02:00
Roberto Ierusalimschy f97c64d7bf macros 'LUA_QL'/'LUA_QL' deprecated 2014-10-17 13:28:21 -03:00
Roberto Ierusalimschy 85fc9ecd5f detail ('G(L)' -> 'g') 2014-10-08 09:20:26 -03:00
Roberto Ierusalimschy 2a21f6c894 'lua_Kcontext' -> 'lua_KContext' 2014-10-07 15:29:13 -03:00
Roberto Ierusalimschy 2be88d5084 'lua_Ctx' -> 'lua_Kcontext' 2014-08-01 14:33:08 -03:00
Roberto Ierusalimschy 1aa4f69b51 new type 'lua_Ctx' for continuation-function contexts (to allow type 
to be configurable)
 2014-07-17 10:53:37 -03:00
Roberto Ierusalimschy 5bbb4a06a6 removed unused parameter Ä'L' in macro 'api_check' and company 2014-07-15 18:26:50 -03:00
Roberto Ierusalimschy b9dcf9974d detail (typos in comments) 2014-06-30 16:48:08 -03:00
Roberto Ierusalimschy 89b56e7d84 more precision between closure types ('LClosure' x 'CClosure') 2014-06-19 15:27:20 -03:00
Roberto Ierusalimschy fa3113ffbf cleaner way to handle bit CIST_OAH (with auxiliar macros) 2014-06-12 16:07:30 -03:00
Roberto Ierusalimschy d94bb6c273 janitor work on 'lua_resume' and related code 2014-06-11 13:01:55 -03:00
Roberto Ierusalimschy 88a9e51f34 bit-field CIST_YIELDED removed (it was never consulted) 2014-06-10 16:18:50 -03:00
Roberto Ierusalimschy 542b6cfc02 no need for field 'status' in structure 'CallInfo' (after removal 
of 'lua_getctx') + field 'old_allowhook' can be packed into a single
bit
 2014-06-10 15:51:21 -03:00
Roberto Ierusalimschy 6f6fd96e3b new type lua_KFunction + no more 'lua_getctx' 2014-06-10 14:41:38 -03:00
Roberto Ierusalimschy 35a6aad0d7 added comments 2014-06-09 13:32:18 -03:00
Roberto Ierusalimschy 1bd70a8e40 new function 'lua_isyieldable' (and 'coroutine.isyieldable') 2014-05-08 10:52:20 -03:00
Roberto Ierusalimschy da4811238a details (typos in comments) 2014-03-21 10:52:33 -03:00
Roberto Ierusalimschy c6c41e85b2 more uniformity for defining system-dependent features 2014-02-26 12:27:56 -03:00
Roberto Ierusalimschy ffa96d988d field 'op' renamed to 'open' 2014-02-15 11:12:01 -02:00
Roberto Ierusalimschy 7a8eb83b4a bug: attempting to resume the running coroutine makes it unyieldable 2013-11-08 16:16:33 -02:00
Roberto Ierusalimschy 4c6dfc342b CallInfo lists shrinks together with their associated stacks 2013-09-17 12:40:06 -03:00
Roberto Ierusalimschy af35c7f398 upvalues collected by reference count 2013-08-27 15:53:35 -03:00
Roberto Ierusalimschy fa3b126a23 BUG: stack overflow in vararg functions with many fixed 
parameters called with few arguments
 2013-04-19 18:05:04 -03:00
Roberto Ierusalimschy b157f3546e BUG: 'pcall' may not restore previous error function when 
inside coroutines
 2012-10-01 11:05:04 -03:00