opensources/lua - lua - Gitea: Git with home nas server

Commit Graph

Author	SHA1	Message	Date
Roberto Ierusalimschy	7c3cb71fa4	Free bit 7 of GC 'marked' field Tables were using this bit to indicate their array sizes were real ('isrealasize'), but this bit can be useful for tests. Instead, they can use bit 7 of their 'flag' field for that purpose. (There are only six fast-access metamethods.) This 'flag' field only exists in tables, so this use does not affect other types.	4 years ago
Roberto Ierusalimschy	68109afcdb	Detail (in asserts) Macro 'checkconsistency' replaced by the similar 'checkliveness".	4 years ago
Roberto Ierusalimschy	9514abc2da	Cleaner definition for 'TString' Use a variable-sized array to store string contents at the end of a structure 'TString', instead of raw memory.	5 years ago
Roberto Ierusalimschy	0ddc0f47bd	Several details about 5.4.0 rc1 Corrected several small details: added 'const', adjusts in tabs x spaces, removed unused #includes and #defines, misspellings, etc.	5 years ago
Roberto Ierusalimschy	28ef7061bb	Tag values don't need to be different from type values Variants can use zero for first variant.	5 years ago
Roberto Ierusalimschy	46c3587a6f	Clearer distinction between types and tags LUA_T* represents only types; tags (types + Variants) are represented by LUA_V* constants.	5 years ago
Roberto Ierusalimschy	69c7139ff8	New macro 'makevariant' to codify variant tags	5 years ago
Roberto Ierusalimschy	5ff408d218	Changed internal representation of booleans Instead of an explicit value (field 'b'), true and false use different tag variants. This avoids reading an extra field and results in more direct code. (Most code that uses booleans needs to distinguish between true and false anyway.)	5 years ago
Roberto Ierusalimschy	b8cdea0190	Changed definition of macro 'l_isfalse' The old definition did one test for nil, but three tests for the all too common booleans (and two tests for other values); this definition does two tests for all values.	5 years ago
Roberto Ierusalimschy	e592f94a64	Details (mostly comments)	5 years ago
Roberto Ierusalimschy	dc07719b0d	Tag LUA_TUPVALTBC replaced by a flag It is simpler to signal a to-be-closed upvalue with a boolean flag, instead of using a different tag.	5 years ago
Roberto Ierusalimschy	3c1d415bd3	Details - Macro 'checkliveness' (for debug) always uses 'L', to avoid warnings. - Some old 'while' changed to 'for' in 'testes/gc.lua'. - In 'testes/libs/makefile', do not make files depend on 'ltests.h', which may not even exist.	5 years ago
Roberto Ierusalimschy	1fb4d53925	OP_NEWTABLE keeps exact size of arrays OP_NEWTABLE is followed by an OP_EXTRAARG, so that it can keep the exact size of the array part of the table to be created. (Functions 'luaO_int2fb'/'luaO_fb2int' were removed.)	5 years ago
Roberto Ierusalimschy	f6aab3ec1f	First implementation of constant propagation Local constant variables initialized with compile-time constants are optimized away from the code.	5 years ago
Roberto Ierusalimschy	54f7b46c1e	New implementation for constants VLOCAL expressions keep a reference to their corresponding 'Vardesc', and 'Upvaldesc' (for upvalues) has a field 'ro' (read-only). So, it is easier to check whether a variable is read-only. The decoupling in VLOCAL between 'vidx' ('Vardesc' index) and 'sidx' (stack index) should also help the forthcoming implementation of compile-time constant propagation.	5 years ago
Roberto Ierusalimschy	5ca1075b71	Added field 'srclen' to structure 'lua_Debug' This new field gets the length of 'source' in the same structure. Unlike the other strings in that structure, 'source' can be relatively large, and Lua already has its length readily available.	6 years ago
Roberto Ierusalimschy	c5feac2b5e	Strings inside Lua are not fully aligned Removed code to ensure that strings inside Lua (as returned by 'lua_tolstring') always start in fully aligned addresses. Since version 5.3 the documentation does not ensure that.	6 years ago
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.)	6 years ago
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.	6 years ago
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.	6 years ago
Roberto Ierusalimschy	b95e466218	new field 'nilvalue' in struct 'global_State' to avoid the use of addresses of static variables	6 years ago
Roberto Ierusalimschy	6e600695f8	field 'sizearray' in struct 'Table' changed to 'alimit', which can be used as a hint for '#t'	6 years ago
Roberto Ierusalimschy	505fc91222	no more 'luaO_nilobject' to avoid comparison of global variable addresses (now uses static variables)	7 years ago
Roberto Ierusalimschy	fb8fa66136	no more 'luaH_emptyobject' and comparisons of addresses of global variables (instead, use a different kind of nil to signal the fake entry returned when a key is not found in a table)	7 years ago
Roberto Ierusalimschy	03c6a05ec8	no more nil-in-table	7 years ago
Roberto Ierusalimschy	ef8263f81f	better names for macros for tags and types. rttype -> rawtt; ttyperaw -> withvariant; ttype -> ttypetag; tnov -> ttype	7 years ago
Roberto Ierusalimschy	2952bc5fc9	special compact representation for userdata with no user values (a common case)	7 years ago
Roberto Ierusalimschy	75efc6722b	avoid variant tags with the same value of the original type (to expose bugs more easily)	7 years ago
Roberto Ierusalimschy	d766e2ae17	first (parcial) implementation of 'keyin'/'removekey' (still no metamethods, no raw verssions)	7 years ago
Roberto Ierusalimschy	9243c414d9	first version of empty entries in tables (so that, in the future, tables can contain regular nil entries)	7 years ago
Roberto Ierusalimschy	477ca2fe8c	some reorganization in 'lobject.h' (just moving stuff around)	7 years ago
Roberto Ierusalimschy	c80c7a49fd	details (comments)	7 years ago
Roberto Ierusalimschy	ca6fe7449a	userdata can have multiple user values	7 years ago
Roberto Ierusalimschy	e2b15aa21d	janitor work on casts	7 years ago
Roberto Ierusalimschy	6710a2b0ef	detail (comment)	7 years ago
Roberto Ierusalimschy	599f1742c6	detail (typo in comments)	7 years ago
Roberto Ierusalimschy	ad0704e40c	back to 'CallInfo' (no gains with its removal)	7 years ago
Roberto Ierusalimschy	5a3f26f855	fitting a StackValue structure into 32 bytes (for 64-bit machines)	7 years ago
Roberto Ierusalimschy	472c560705	no more useful fields in CallInfo	7 years ago
Roberto Ierusalimschy	54eb35a8aa	more fields moved out of 'CallInfo'	7 years ago
Roberto Ierusalimschy	c5482468fd	baby steps to remove 'CallInfo': keeping 'L->func' correct	7 years ago
Roberto Ierusalimschy	f96497397a	new type 'StackValue' for stack elements (we may want to put extra info there in the future)	7 years ago
Roberto Ierusalimschy	b42430fd3a	'lineinfo' in prototypes saved as differences instead of absolute values, so that the array can use bytes instead of ints, reducing its size. (A new array 'abslineinfo' is used when line differences do not fit in a byte.)	7 years ago
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.	8 years ago
Roberto Ierusalimschy	b6f87491af	in hash nodes, keys are stored in separate pieces to avoid wasting space with alignments	8 years ago
Roberto Ierusalimschy	4bb30f461b	when assigning to a 'TValue', better assign only exact fields, to allow us to put stuff after the 'TValuefields' if needed	8 years ago
Roberto Ierusalimschy	8634b2a011	added 'cachemiss' field to prototype to avoid wasting time checking hits that fail too often	8 years ago
Roberto Ierusalimschy	2caecf1b3e	type 'L_Umaxalign' replaced by macro 'LUAI_MAXALIGN', which is also added to the auxlib buffer	8 years ago
Roberto Ierusalimschy	a3d36fe283	Upvalues collected like everything else (with mark-sweep) instead of reference count (simpler and better for generational mode)	8 years ago
Roberto Ierusalimschy	e4a9e6fcca	do not eliminate varargs from functions that do not use varargs (confuses the debug lib and gains very little in performance)	8 years ago

1 2 3 4 5 ...

327 Commits (30528049f1d11ea2854a6431e8e8524f83206559)