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Removed GC checks from function calls

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Function calls do not create new objects. (It may use memory with
stack reallocation, but now that is irrelevant to the GC.)
This commit is contained in:
Roberto Ierusalimschy
2022-11-24 10:20:15 -03:00
parent ec61be9a7e
commit 152b51955a
5 changed files with 10 additions and 20 deletions
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8
ldo.c
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@@ -416,7 +416,7 @@ static void rethook (lua_State *L, CallInfo *ci, int nres) {
StkId luaD_tryfuncTM (lua_State *L, StkId func) {
const TValue *tm;
StkId p;
checkstackGCp(L, 1, func); /* space for metamethod */
checkstackp(L, 1, func); /* space for metamethod */
tm = luaT_gettmbyobj(L, s2v(func), TM_CALL); /* (after previous GC) */
if (l_unlikely(ttisnil(tm)))
luaG_callerror(L, s2v(func)); /* nothing to call */
@@ -521,7 +521,7 @@ l_sinline int precallC (lua_State *L, StkId func, int nresults,
lua_CFunction f) {
int n; /* number of returns */
CallInfo *ci;
checkstackGCp(L, LUA_MINSTACK, func); /* ensure minimum stack size */
checkstackp(L, LUA_MINSTACK, func); /* ensure minimum stack size */
L->ci = ci = prepCallInfo(L, func, nresults, CIST_C,
L->top.p + LUA_MINSTACK);
lua_assert(ci->top.p <= L->stack_last.p);
@@ -557,7 +557,7 @@ int luaD_pretailcall (lua_State *L, CallInfo *ci, StkId func,
int fsize = p->maxstacksize; /* frame size */
int nfixparams = p->numparams;
int i;
checkstackGCp(L, fsize - delta, func);
checkstackp(L, fsize - delta, func);
ci->func.p -= delta; /* restore 'func' (if vararg) */
for (i = 0; i < narg1; i++) /* move down function and arguments */
setobjs2s(L, ci->func.p + i, func + i);
@@ -604,7 +604,7 @@ CallInfo *luaD_precall (lua_State *L, StkId func, int nresults) {
int narg = cast_int(L->top.p - func) - 1; /* number of real arguments */
int nfixparams = p->numparams;
int fsize = p->maxstacksize; /* frame size */
checkstackGCp(L, fsize, func);
checkstackp(L, fsize, func);
L->ci = ci = prepCallInfo(L, func, nresults, 0, func + 1 + fsize);
ci->u.l.savedpc = p->code; /* starting point */
for (; narg < nfixparams; narg++)