new function `lua_getallocf' to retrieve allocation function and data

lapi.c

@@ -1,5 +1,5 @@
 /*
-** $Id: lapi.c,v 1.246 2003/10/10 12:57:55 roberto Exp roberto $
+** $Id: lapi.c,v 1.247 2003/10/10 13:29:08 roberto Exp roberto $
 ** Lua API
 ** See Copyright Notice in lua.h
 */
@@ -882,6 +882,12 @@ LUA_API void lua_concat (lua_State *L, int n) {
 }
 
 
+LUA_API lua_Alloc lua_getallocf (lua_State *L, void **ud) {
+  *ud = G(L)->ud;
+  return G(L)->realloc;
+}
+
+
 LUA_API void *lua_newuserdata (lua_State *L, size_t size) {
   Udata *u;
   lua_lock(L);
@@ -894,6 +900,8 @@ LUA_API void *lua_newuserdata (lua_State *L, size_t size) {
 }
 
 
+
+
 static const char *aux_upvalue (lua_State *L, int funcindex, int n,
                                 TObject **val) {
   Closure *f;

ltests.c

@@ -1,5 +1,5 @@
 /*
-** $Id: ltests.c,v 1.165 2003/10/07 20:13:41 roberto Exp roberto $
+** $Id: ltests.c,v 1.166 2003/10/10 13:29:08 roberto Exp roberto $
 ** Internal Module for Debugging of the Lua Implementation
 ** See Copyright Notice in lua.h
 */
@@ -836,6 +836,9 @@ static int l_panic (lua_State *L) {
 
 
 int luaB_opentests (lua_State *L) {
+  void *ud;
+  lua_assert(lua_getallocf(L, &ud) == debug_realloc);
+  lua_assert(ud == cast(void *, &memcontrol));
   lua_atpanic(L, l_panic);
   lua_userstateopen(L);  /* init lock */
   lua_state = L;  /* keep first state to be opened */

lua.h

@@ -1,5 +1,5 @@
 /*
-** $Id: lua.h,v 1.181 2003/10/10 12:57:55 roberto Exp roberto $
+** $Id: lua.h,v 1.182 2003/10/10 13:29:08 roberto Exp roberto $
 ** Lua - An Extensible Extension Language
 ** Tecgraf: Computer Graphics Technology Group, PUC-Rio, Brazil
 ** http://www.lua.org	mailto:info@lua.org
@@ -239,6 +239,8 @@ LUA_API int   lua_next (lua_State *L, int idx);
 
 LUA_API void  lua_concat (lua_State *L, int n);
 
+LUA_API lua_Alloc lua_getallocf (lua_State *L, void **ud);
+
 
 
 /*