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lua inbinary strings

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Allows saving of ram by reusing strings already stored in the binary
and storing a pointer instead of malloc and copy to get them inside
the lua state

Saves about 1.5K overall

Derivative of work by bogdanm
RAM optimizations: pseudo RO strings, functions in Flash
d54659b572

Change-Id: I21d6dcfa32523877efd9f70fb0f88f2a02872649
This commit is contained in:
William Wilgus 2018-11-11 18:27:19 -05:00
parent 42240f6990
commit c6fcb1cf45
10 changed files with 88 additions and 25 deletions
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21
apps/plugins/lua/lauxlib.c
View file

@ -11,10 +11,12 @@
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "lstring.h" /* ROCKLUA ADDED */
/* This file uses only the official API of Lua.
** Any function declared here could be written as an application function.
** Note ** luaS_newlloc breaks this guarantee ROCKLUA ADDED
*/
#define lauxlib_c
@ -239,23 +241,36 @@ LUALIB_API int luaL_callmeta (lua_State *L, int obj, const char *event) {
}
/* ROCKLUA ADDED */
static int libsize_storenames (lua_State *L, const char* libname, const luaL_Reg *l) {
int size = 0;
if (libname)
luaS_newlloc(L, libname, TSTR_INBIN);
for (; l->name; l++) {
size++;
luaS_newlloc(L, l->name, TSTR_INBIN);
}
return size;
}
LUALIB_API void (luaL_register) (lua_State *L, const char *libname,
const luaL_Reg *l) {
luaI_openlib(L, libname, l, 0);
}
#if 0
static int libsize (const luaL_Reg *l) {
int size = 0;
for (; l->name; l++) size++;
return size;
}
#endif
LUALIB_API void luaI_openlib (lua_State *L, const char *libname,
const luaL_Reg *l, int nup) {
int size = libsize_storenames(L, libname, l);
if (libname) {
int size = libsize(l);
/* check whether lib already exists */
luaL_findtable(L, LUA_REGISTRYINDEX, "_LOADED", 1);
lua_getfield(L, -1, libname); /* get _LOADED[libname] */