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Struct 'transferinfo' moved to "lua_State"

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That reduces the size of "CallInfo". Moreover, bit CIST_HOOKED from
call status is not needed. When in a hook, 'transferinfo' is always
valid, being zero when the hook is not call/return.
This commit is contained in:
Roberto Ierusalimschy 2024-07-30 10:16:19 -03:00
parent f2206b2abe
commit 4c6afbcb01
3 changed files with 16 additions and 24 deletions
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14
ldo.c
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@ -357,7 +357,6 @@ void luaD_hook (lua_State *L, int event, int line,
int ftransfer, int ntransfer) {
lua_Hook hook = L->hook;
if (hook && L->allowhook) { /* make sure there is a hook */
unsigned mask = CIST_HOOKED;
CallInfo *ci = L->ci;
ptrdiff_t top = savestack(L, L->top.p); /* preserve original 'top' */
ptrdiff_t ci_top = savestack(L, ci->top.p); /* idem for 'ci->top' */
@ -365,18 +364,15 @@ void luaD_hook (lua_State *L, int event, int line,
ar.event = event;
ar.currentline = line;
ar.i_ci = ci;
if (ntransfer != 0) {
mask |= CIST_TRAN; /* 'ci' has transfer information */
ci->u2.transferinfo.ftransfer = ftransfer;
ci->u2.transferinfo.ntransfer = ntransfer;
}
L->transferinfo.ftransfer = ftransfer;
L->transferinfo.ntransfer = ntransfer;
if (isLua(ci) && L->top.p < ci->top.p)
L->top.p = ci->top.p; /* protect entire activation register */
luaD_checkstack(L, LUA_MINSTACK); /* ensure minimum stack size */
if (ci->top.p < L->top.p + LUA_MINSTACK)
ci->top.p = L->top.p + LUA_MINSTACK;
L->allowhook = 0; /* cannot call hooks inside a hook */
ci->callstatus |= mask;
ci->callstatus |= CIST_HOOKED;
lua_unlock(L);
(*hook)(L, &ar);
lua_lock(L);
@ -384,7 +380,7 @@ void luaD_hook (lua_State *L, int event, int line,
L->allowhook = 1;
ci->top.p = restorestack(L, ci_top);
L->top.p = restorestack(L, top);
ci->callstatus &= ~mask;
ci->callstatus &= ~CIST_HOOKED;
}
}
@ -525,7 +521,7 @@ void luaD_poscall (lua_State *L, CallInfo *ci, int nres) {
moveresults(L, ci->func.p, nres, fwanted);
/* function cannot be in any of these cases when returning */
lua_assert(!(ci->callstatus &
(CIST_HOOKED | CIST_YPCALL | CIST_FIN | CIST_TRAN | CIST_CLSRET)));
(CIST_HOOKED | CIST_YPCALL | CIST_FIN | CIST_CLSRET)));
L->ci = ci->previous; /* back to caller (after closing variables) */
}