mirror of
https://github.com/lua/lua.git
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114 lines
2.6 KiB
C
114 lines
2.6 KiB
C
/*
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** $Id: lstate.c,v 1.23 1999/12/21 18:04:41 roberto Exp roberto $
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** Global State
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** See Copyright Notice in lua.h
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*/
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#include <stdarg.h>
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#define LUA_REENTRANT
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#include "lauxlib.h"
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#include "lbuiltin.h"
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#include "ldo.h"
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#include "lgc.h"
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#include "llex.h"
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#include "lmem.h"
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#include "lref.h"
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#include "lstate.h"
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#include "lstring.h"
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#include "ltm.h"
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#ifndef DEFAULT_STACK_SIZE
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#define DEFAULT_STACK_SIZE 1024
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#endif
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lua_State *lua_state = NULL;
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static lua_State *newstate_aux (int stacksize, int put_builtin) {
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lua_State *L = luaM_new(NULL, lua_State);
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L->errorJmp = NULL;
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L->Mbuffer = NULL;
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L->Mbuffbase = 0;
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L->Mbuffsize = 0;
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L->Mbuffnext = 0;
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L->Cblocks = NULL;
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L->numCblocks = 0;
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L->rootproto = NULL;
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L->rootcl = NULL;
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L->rootglobal = NULL;
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L->roottable = NULL;
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L->IMtable = NULL;
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L->refArray = NULL;
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L->refSize = 0;
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L->refFree = NONEXT;
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L->nblocks = 0;
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L->GCthreshold = MAX_INT; /* to avoid GC during pre-definitions */
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L->debug = 0;
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L->callhook = NULL;
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L->linehook = NULL;
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L->allowhooks = 1;
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luaD_init(L, stacksize);
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luaS_init(L);
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luaX_init(L);
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luaT_init(L);
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if (put_builtin)
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luaB_predefine(L);
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L->GCthreshold = L->nblocks*4;
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return L;
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}
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lua_State *lua_newstate (const char *s, ...) {
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static const char *const ops[] = {"stack", "builtin", NULL};
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va_list ap;
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int stacksize = DEFAULT_STACK_SIZE;
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int put_builtin = 1;
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va_start(ap, s);
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while (s) {
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switch (luaL_findstring(s, ops)) {
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case 0: /* stack */
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stacksize = va_arg(ap, int);
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break;
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case 1: /* builtin */
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put_builtin = va_arg(ap, int);
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break;
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default: /* invalid argument */
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va_end(ap);
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return NULL;
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}
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s = va_arg(ap, const char *);
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}
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va_end(ap);
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return newstate_aux(stacksize, put_builtin);
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}
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void lua_close (lua_State *L) {
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luaC_collect(L, 1); /* collect all elements */
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LUA_ASSERT(L, L->rootproto == NULL, "list should be empty");
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LUA_ASSERT(L, L->rootcl == NULL, "list should be empty");
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LUA_ASSERT(L, L->rootglobal == NULL, "list should be empty");
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LUA_ASSERT(L, L->roottable == NULL, "list should be empty");
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luaS_freeall(L);
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luaM_free(L, L->stack);
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luaM_free(L, L->IMtable);
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luaM_free(L, L->refArray);
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luaM_free(L, L->Mbuffer);
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luaM_free(L, L->Cblocks);
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LUA_ASSERT(L, L->numCblocks == 0, "Cblocks still open");
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LUA_ASSERT(L, L->nblocks == 0, "wrong count for nblocks");
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LUA_ASSERT(L, L->Cstack.base == L->top, "C2Lua not empty");
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luaM_free(L, L);
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if (L == lua_state) {
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LUA_ASSERT(L, memdebug_numblocks == 0, "memory leak!");
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LUA_ASSERT(L, memdebug_total == 0,"memory leak!");
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lua_state = NULL;
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}
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}
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