mirror of
https://github.com/lua/lua
synced 2024-12-14 14:57:10 +03:00
90 lines
2.2 KiB
C
90 lines
2.2 KiB
C
/*
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** $Id: lstate.c,v 1.34 2000/08/28 17:57:04 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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#include "lua.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 "lstate.h"
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#include "lstring.h"
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#include "ltable.h"
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#include "ltm.h"
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lua_State *lua_newstate (int stacksize, int put_builtin) {
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struct lua_longjmp myErrorJmp;
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lua_State *L = luaM_new(NULL, lua_State);
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if (L == NULL) return NULL; /* memory allocation error */
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L->stack = NULL;
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L->strt.size = L->udt.size = 0;
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L->strt.nuse = L->udt.nuse = 0;
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L->strt.hash = NULL;
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L->udt.hash = 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->rootproto = NULL;
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L->rootcl = NULL;
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L->roottable = NULL;
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L->IMtable = NULL;
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L->last_tag = -1;
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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->callhook = NULL;
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L->linehook = NULL;
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L->allowhooks = 1;
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L->errorJmp = &myErrorJmp;
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if (setjmp(myErrorJmp.b) == 0) { /* to catch memory allocation errors */
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L->gt = luaH_new(L, 10);
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luaD_init(L, (stacksize == 0) ? DEFAULT_STACK_SIZE :
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stacksize+LUA_MINSTACK);
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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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L->errorJmp = NULL;
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return L;
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}
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else { /* memory allocation error: free partial state */
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lua_close(L);
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return NULL;
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}
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}
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#ifdef DEBUG
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extern lua_State *lua_state;
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#endif
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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->rootproto == NULL, "list should be empty");
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LUA_ASSERT(L->rootcl == NULL, "list should be empty");
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LUA_ASSERT(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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LUA_ASSERT(L->nblocks == 0, "wrong count for nblocks");
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luaM_free(L, L);
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LUA_ASSERT(L != lua_state || memdebug_numblocks == 0, "memory leak!");
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LUA_ASSERT(L != lua_state || memdebug_total == 0,"memory leak!");
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}
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