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/*
** $Id: lstate.c,v 1.24 2000/01/13 16:30:47 roberto Exp roberto $
** Global State
** See Copyright Notice in lua.h
*/
#include <stdarg.h>
#define LUA_REENTRANT
#include "lauxlib.h"
#include "lbuiltin.h"
#include "ldo.h"
#include "lgc.h"
#include "llex.h"
#include "lmem.h"
#include "lref.h"
#include "lstate.h"
#include "lstring.h"
#include "ltm.h"
lua_State *lua_state = NULL;
static lua_State *newstate_aux (int stacksize, int put_builtin) {
lua_State *L = luaM_new(NULL, lua_State);
L->errorJmp = NULL;
L->Mbuffer = NULL;
L->Mbuffbase = 0;
L->Mbuffsize = 0;
L->Mbuffnext = 0;
L->Cblocks = NULL;
L->numCblocks = 0;
L->rootproto = NULL;
L->rootcl = NULL;
L->rootglobal = NULL;
L->roottable = NULL;
L->IMtable = NULL;
L->refArray = NULL;
L->refSize = 0;
L->refFree = NONEXT;
L->nblocks = 0;
L->GCthreshold = MAX_INT; /* to avoid GC during pre-definitions */
L->debug = 0;
L->callhook = NULL;
L->linehook = NULL;
L->allowhooks = 1;
luaD_init(L, stacksize);
luaS_init(L);
luaX_init(L);
luaT_init(L);
if (put_builtin)
luaB_predefine(L);
L->GCthreshold = L->nblocks*4;
return L;
}
lua_State *lua_newstate (const char *s, ...) {
static const char *const ops[] = {"stack", "builtin", NULL};
va_list ap;
int stacksize = DEFAULT_STACK_SIZE;
int put_builtin = 1;
va_start(ap, s);
while (s) {
switch (luaL_findstring(s, ops)) {
case 0: /* stack */
stacksize = va_arg(ap, int);
break;
case 1: /* builtin */
put_builtin = va_arg(ap, int);
break;
default: /* invalid argument */
va_end(ap);
return NULL;
}
s = va_arg(ap, const char *);
}
va_end(ap);
return newstate_aux(stacksize, put_builtin);
}
void lua_close (lua_State *L) {
luaC_collect(L, 1); /* collect all elements */
LUA_ASSERT(L, L->rootproto == NULL, "list should be empty");
LUA_ASSERT(L, L->rootcl == NULL, "list should be empty");
LUA_ASSERT(L, L->rootglobal == NULL, "list should be empty");
LUA_ASSERT(L, L->roottable == NULL, "list should be empty");
luaS_freeall(L);
luaM_free(L, L->stack);
luaM_free(L, L->IMtable);
luaM_free(L, L->refArray);
luaM_free(L, L->Mbuffer);
luaM_free(L, L->Cblocks);
LUA_ASSERT(L, L->numCblocks == 0, "Cblocks still open");
LUA_ASSERT(L, L->nblocks == 0, "wrong count for nblocks");
LUA_ASSERT(L, L->Cstack.base == L->top, "C2Lua not empty");
luaM_free(L, L);
if (L == lua_state) {
LUA_ASSERT(L, memdebug_numblocks == 0, "memory leak!");
LUA_ASSERT(L, memdebug_total == 0,"memory leak!");
lua_state = NULL;
}
}
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