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lua latebound function update

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return the nextfunction and nil instead of pairs it allows a faster
return to lua rather than calling the lua function
pcall(fnpairs) from c and returning the result back
into lua to kick off the search
yeah, no clue why I didn't realize that before..

testing in x86 and ARM..
its more RAM efficient to do the initial creation
of the stack in lua code for the __pairs functon
its not faster but being that its a one time hit per
iter creation the reduced churn alone should be worth it
along with a reduced peak RAM usage

fix bug where a failed module can not be reloaded

optimize filetol

fix potential bug in splash scroller when no break character is found
Change-Id: I42c922e07039a19138b97c0d0e80cf3cf2426471
This commit is contained in:
William Wilgus 2021-05-11 21:35:41 -04:00 committed by William Wilgus
parent 0c62177575
commit dcff9b85a3
4 changed files with 51 additions and 29 deletions
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37
apps/plugins/lua/lauxlib.c
View file

@ -268,7 +268,8 @@ static int latebind_func_index(lua_State *L)
const char *name = lua_tostring(L, -1);
lua_pushstring (L, "__latebind");/* basetable;name;__latebind;*/
lua_rawget (L, -3);/* basetable;name;__latebind(t);*/
if(lua_istable(L, -3))
lua_rawget (L, -3);/* basetable;name;__latebind(t);*/
luaL_argcheck(L, lua_istable(L, -3) && lua_istable(L, -1), 1,
"__latebind table expected");
@ -324,25 +325,31 @@ static int latebind_func_pairs(lua_State *L)
{
/* basetable @ top of stack 1(basetable)-1 */
luaL_argcheck(L, lua_istable(L, 1), 1, "table expected");
lua_getglobal(L, "pairs"); /* function to be called / returned (btable;pairs) */
lua_createtable(L, 0, 15); /* btable;pairs;newtable; */
/* clone base table */
#if 0
lua_getglobal(L, "next"); /* function to be called / returned (btable;next) */
lua_createtable(L, 0, 15); /* btable;next;newtable; */
lua_pushnil(L); /* nil name retrieves all unbound latebound functions */
lua_pushnil(L); /* first key */
while(lua_next(L, 1) != 0) {
/* (btable;pairs;ntable;k;v) */
#else
/* this way is more RAM efficient in testing */
if(luaL_dostring(L, "return next, {}, nil, nil")!= 0)
lua_error(L);
#endif
/* (btable;next;ntable;nil;nil) */
/* clone base table */
while(lua_next(L, 1) > 0) {
/* (btable;next;ntable;nil;k;v) */
lua_pushvalue(L, -2); /* dupe key Stk = (..;k;v -> ..k;v;k)*/
lua_insert(L, -2); /* Stk = (..k;k;v) */
lua_rawset(L, 3); /* btable;pairs;ntable;k */
lua_rawset(L, -5); /* btable;next;ntable;nil;k */
}
lua_pushnil(L); /*nil name retrieves all unbound late bound functions */
latebind_func_index(L);/* (btable;pairs;ntable;nil) -> (btable;pairs;ntable) */
/* (btable;pairs;ntable) */
lua_call(L, 1, 3); /* pairs(ntable) -> (btable;iter;state;value) */
return 3;
/* fill the new table with all the latebound functions */
/* nil name retrieves all unbound latebound functions */
latebind_func_index(L);/* (btable;next;ntable;nil) -> (btable;next;ntable) */
lua_pushnil(L); /*nil initial key for next*/
/* stack = (btable;next;ntable;nil) */
return 3; /*(next,ntable,nil)*/
}

4
apps/plugins/lua/loadlib.c
View file

@ -130,9 +130,11 @@ static int ll_require (lua_State *L) {
lua_pushliteral(L, ""); /* error message accumulator */
for (i=1; ; i++) {
lua_rawgeti(L, -2, i); /* get a loader */
if (lua_isnil(L, -1))
if (lua_isnil(L, -1)) {
lua_setfield(L, 2, name); /* _LOADED[name] = nil */
luaL_error(L, "module " LUA_QS " not found:%s",
name, lua_tostring(L, -2));
}
lua_pushstring(L, name);
lua_call(L, 1, 1); /* call it */
if (lua_isfunction(L, -1)) /* did it find module? */

5
apps/plugins/lua/lparser.c
View file

@ -603,7 +603,12 @@ static void parlist (LexState *ls) {
} while (!f->is_vararg && testnext(ls, ','));
}
adjustlocalvars(ls, nparams);
//f->numparams = cast_byte(fs->nactvar - (f->is_vararg & VARARG_HASARG));
#if defined(LUA_COMPAT_VARARG)
f->numparams = cast_byte(fs->nactvar - (f->is_vararg & VARARG_HASARG));
#else
f->numparams = cast_byte(fs->nactvar);
#endif
luaK_reserveregs(fs, fs->nactvar); /* reserve register for parameters */
}

34
apps/plugins/lua/rockaux.c
View file

@ -106,7 +106,8 @@ int splash_scroller(int timeout, const char* str)
{
brk = strpbrk_n(ch+1, max_ch, break_chars);
chars_next_break = (brk - ch);
if (chars_next_break < 2 || w + (ch_w * chars_next_break) > max_w)
if (brk &&
(chars_next_break < 2 || w + (ch_w * chars_next_break) > max_w))
{
if (!isprint(line[linepos]))
{
@ -226,7 +227,7 @@ int get_current_path(lua_State *L, int level)
}
}
lua_pushnil(L);
lua_pushnil(L);
return 1;
}
@ -250,25 +251,32 @@ int filetol(int fd, long *num)
while (rb->read(fd, &chbuf, 1) == 1)
{
if(!isspace(chbuf) || retn == 1)
if(retn || !isspace(chbuf))
{
if(chbuf == '0') /* strip preceeding zeros */
switch(chbuf)
{
*num = 0;
retn = 1;
}
else if(chbuf == '-' && retn != 1)
neg = true;
else
{
rb->lseek(fd, -1, SEEK_CUR);
break;
case '-':
{
if (retn) /* 0 preceeds, this negative sign must be in error */
goto get_digits;
neg = true;
continue;
}
case '0': /* strip preceeding zeros */
{
*num = 0;
retn = 1;
continue;
}
default:
goto get_digits;
}
}
}
while (rb->read(fd, &chbuf, 1) == 1)
{
get_digits:
if(!isdigit(chbuf))
{
rb->lseek(fd, -1, SEEK_CUR);