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no more one environment per thread: all threads share a single global

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environment
This commit is contained in:
Roberto Ierusalimschy 2009-10-23 17:12:19 -02:00
parent f5073de0a7
commit 5bc91c6405
7 changed files with 27 additions and 47 deletions
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13
lbaselib.c
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@ -1,5 +1,5 @@
/*
** $Id: lbaselib.c,v 1.219 2009/10/05 16:44:33 roberto Exp roberto $
** $Id: lbaselib.c,v 1.220 2009/10/23 12:50:25 roberto Exp roberto $
** Basic library
** See Copyright Notice in lua.h
*/
@ -125,7 +125,7 @@ static void getfunc (lua_State *L, int opt) {
static int luaB_getfenv (lua_State *L) {
getfunc(L, 1);
if (lua_iscfunction(L, -1)) /* is a C function? */
lua_pushvalue(L, LUA_GLOBALSINDEX); /* return the thread's global env. */
lua_pushvalue(L, LUA_GLOBALSINDEX); /* return the global env. */
else
lua_getfenv(L, -1);
return 1;
@ -136,14 +136,7 @@ static int luaB_setfenv (lua_State *L) {
luaL_checktype(L, 2, LUA_TTABLE);
getfunc(L, 0);
lua_pushvalue(L, 2);
if (lua_isnumber(L, 1) && lua_tonumber(L, 1) == 0) {
/* change environment of current thread */
lua_pushthread(L);
lua_insert(L, -2);
lua_setfenv(L, -2);
return 0;
}
else if (lua_iscfunction(L, -2) || lua_setfenv(L, -2) == 0)
if (lua_iscfunction(L, -2) || lua_setfenv(L, -2) == 0)
return luaL_error(L,
LUA_QL("setfenv") " cannot change environment of given object");
return 1;