/*
** open parts that may cause memory-allocation errors
*/
static void f_luaopen (lua_State *L, void *ud) {
/* create a new global state */
global_State *g = luaM_new(NULL, global_State);
UNUSED(ud);
if (g == NULL) luaD_throw(L, LUA_ERRMEM);
L->l_G = g;
g->mainthread = L;
g->GCthreshold = 0; /* mark it as unfinished state */
g->strt.size = 0;
g->strt.nuse = 0;
g->strt.hash = NULL;
setnilvalue(defaultmeta(L));
setnilvalue(registry(L));
luaZ_initbuffer(L, &g->buff);
g->panic = default_panic;
g->rootgc = NULL;
g->rootudata = NULL;
g->tmudata = NULL;
setnilvalue(gkey(g->dummynode));
setnilvalue(gval(g->dummynode));
g->dummynode->next = NULL;
g->nblocks = sizeof(lua_State) + sizeof(global_State);
stack_init(L, L); /* init stack */
/* create default meta table with a dummy table, and then close the loop */
defaultmeta(L)->tt = LUA_TTABLE;
sethvalue(defaultmeta(L), luaH_new(L, 0, 0));
hvalue(defaultmeta(L))->metatable = hvalue(defaultmeta(L));
sethvalue(gt(L), luaH_new(L, 0, 4)); /* table of globals */
sethvalue(registry(L), luaH_new(L, 4, 4)); /* registry */
luaS_resize(L, MINSTRTABSIZE); /* initial size of string table */
luaT_init(L);
luaX_init(L);
luaS_fix(luaS_newliteral(L, MEMERRMSG));
g->GCthreshold = 4*G(L)->nblocks;
}
static int f_luaopen (lua_State *L, void *ud) {
#else
static void f_luaopen (lua_State *L, void *ud) {
#endif /* LUA_EXT_RESUMABLEVM */
global_State *g = G(L);
UNUSED(ud);
stack_init(L, L); /* init stack */
#if LUA_MEMORY_STATS
luaM_setname(L, "lua.globals");
#endif /* LUA_MEMORY_STATS */
sethvalue(L, gt(L), luaH_new(L, 0, 2)); /* table of globals */
#if LUA_MEMORY_STATS
luaM_setname(L, "lua.registry");
#endif /* LUA_MEMORY_STATS */
sethvalue(L, registry(L), luaH_new(L, 0, 2)); /* registry */
#if LUA_FASTREF_SUPPORT
{
TValue n;
sethvalue(L, &G(L)->l_refs, luaH_new(L, 0, 2)); /* refs */
setnvalue(&n, 0);
setobj2t(L, luaH_setnum(L, hvalue(&G(L)->l_refs), LUA_RIDX_FASTREF_FREELIST), &n);
setnilvalue(&g->fastrefNilValue);
}
#endif /* LUA_FASTREF_SUPPORT */
luaS_resize(L, MINSTRTABSIZE); /* initial size of string table */
luaT_init(L);
luaX_init(L);
luaS_fix(luaS_newliteral(L, MEMERRMSG));
g->GCthreshold = 4*g->totalbytes;
#if LUA_EXT_RESUMABLEVM
return 0;
#endif /* LUA_EXT_RESUMABLEVM */
}
/*
** open parts of the state that may cause memory-allocation errors
*/
static void f_luaopen (lua_State *L, void *ud) {
global_State *g = G(L);
UNUSED(ud);
stack_init(L, L); /* init stack */
init_registry(L, g);
#if LUA_FASTREF_SUPPORT
{
TValue n;
sethvalue(L, &G(L)->l_refs, luaH_new(L, 1, 0)); /* refs */
setnvalue(&n, 0);
setobj2t(L, luaH_setnum(L, hvalue(&G(L)->l_refs), LUA_RIDX_FASTREF_FREELIST), &n);
setnilvalue(&g->fastrefNilValue);
}
#endif /* LUA_FASTREF_SUPPORT */
luaS_resize(L, MINSTRTABSIZE); /* initial size of string table */
luaT_init(L);
luaX_init(L);
/* pre-create memory-error message */
g->memerrmsg = luaS_newliteral(L, MEMERRMSG);
luaS_fix(g->memerrmsg); /* it should never be collected */
g->gcrunning = 1; /* allow gc */
g->version = lua_version(NULL);
luai_userstateopen(L);
}
/*
** open parts that may cause memory-allocation errors
*/
static void f_luaopen (lua_State *L, void *ud) {
global_State *g = G(L);
UNUSED(ud);
stack_init(L, L); /* init stack */
sethvalue(L, gt(L), luaH_new(L, 0, 2)); /* table of globals */
sethvalue(L, registry(L), luaH_new(L, 0, 2)); /* registry */
luaS_resize(L, MINSTRTABSIZE); /* initial size of string table */
luaT_init(L);
luaX_init(L);
luaS_fix(luaS_newliteral(L, MEMERRMSG));
g->GCthreshold = 4*g->totalbytes;
}
/*
** open parts of the state that may cause memory-allocation errors.
** ('g->version' != NULL flags that the state was completely build)
*/
static void f_luaopen (lua_State *L, void *ud) {
global_State *g = G(L);
UNUSED(ud);
stack_init(L, L); /* init stack */
init_registry(L, g);
luaS_init(L);
luaT_init(L);
luaX_init(L);
g->gcrunning = 1; /* allow gc */
g->version = lua_version(NULL);
luai_userstateopen(L);
}
void lua_open() {
if (lua_state)
return;
lua_rootState = lua_state = luaM_new(LState);
lua_stateinit(lua_state);
lua_resetglobals();
luaT_init();
luaB_predefine();
luaL_addlibtolist(stdErrorRimFunc, (sizeof(stdErrorRimFunc) / sizeof(stdErrorRimFunc[0])));
if (Debug::isChannelEnabled(Debug::Lua))
lua_callhook = callHook;
}
/*
** open parts of the state that may cause memory-allocation errors
*/
static void f_luaopen (lua_State *L, void *ud) {
global_State *g = G(L);
UNUSED(ud);
stack_init(L, L); /* init stack */
init_registry(L, g);
luaS_resize(L, MINSTRTABSIZE); /* initial size of string table */
luaT_init(L);
luaX_init(L);
/* pre-create memory-error message */
g->memerrmsg = luaS_newliteral(L, MEMERRMSG);
luaS_fix(g->memerrmsg); /* it should never be collected */
g->gcrunning = 1; /* allow gc */
}
/**
* 完成与内存有关的初始化工作, 包括分配栈空间, 初始化注册表, 预分配
* 某些字符串资源(保留关键字等)
*/
static void f_luaopen (lua_State *L, void *ud) {
Dlog("luaopen begin.");
global_State *g = G(L);
UNUSED(ud);
stack_init(L, L); /* init stack */
init_registry(L, g);
Dlog("ini size of string table with size %d", MINSTRTABSIZE);
luaS_resize(L, MINSTRTABSIZE); /* initial size of string table */
luaT_init(L);
luaX_init(L);
/* pre-create memory-error message */
g->memerrmsg = luaS_newliteral(L, MEMERRMSG);
luaC_fix(L, obj2gco(g->memerrmsg)); /* it should never be collected */
g->gcrunning = 1; /* allow gc */
g->version = lua_version(NULL);
luai_userstateopen(L);
Dlog("luaopen end.");
}
/*
** open parts that may cause memory-allocation errors
*/
static void f_luaopen (lua_State *L, void *ud) {
int stacksize = *(int *)ud;
if (stacksize == 0)
stacksize = DEFAULT_STACK_SIZE;
else
stacksize += LUA_MINSTACK;
L->gt = luaH_new(L, 10); /* table of globals */
luaD_init(L, stacksize);
luaS_init(L);
luaX_init(L);
luaT_init(L);
lua_newtable(L);
lua_ref(L, 1); /* create registry */
lua_register(L, LUA_ERRORMESSAGE, errormessage);
#ifdef LUA_DEBUG
luaB_opentests(L);
if (lua_state == NULL) lua_state = L; /* keep first state to be opened */
#endif
LUA_ASSERT(lua_gettop(L) == 0, "wrong API stack");
}
/*
** open parts of the state that may cause memory-allocation errors.
** ('g->version' != NULL flags that the state was completely build)
*/
static void f_luaopen (lua_State *L, void *ud) {
global_State *g = G(L);
UNUSED(ud);
stack_init(L, L); /* init stack */
init_registry(L, g);
#if LUA_FASTREF_SUPPORT
{
TValue n;
sethvalue(L, &G(L)->l_refs, luaH_new(L)); /* refs */
setivalue(&n, 0);
luaH_setint(L, hvalue(&G(L)->l_refs), LUA_RIDX_FASTREF_FREELIST, &n);
setnilvalue(&g->fastrefNilValue);
}
#endif /* LUA_FASTREF_SUPPORT */
luaS_init(L);
luaT_init(L);
luaX_init(L);
g->gcrunning = 1; /* allow gc */
g->version = lua_version(NULL);
luai_userstateopen(L);
}
void lua_open (void)
{
if (lua_state) return;
lua_state = luaM_new(lua_State);
L->Cstack.base = 0;
L->Cstack.lua2C = 0;
L->Cstack.num = 0;
L->errorJmp = NULL;
L->Mbuffer = NULL;
L->Mbuffbase = 0;
L->Mbuffsize = 0;
L->Mbuffnext = 0;
L->Cblocks = NULL;
L->numCblocks = 0;
L->debug = 0;
L->callhook = NULL;
L->linehook = NULL;
L->rootproto.next = NULL;
L->rootproto.marked = 0;
L->rootcl.next = NULL;
L->rootcl.marked = 0;
L->rootglobal.next = NULL;
L->rootglobal.marked = 0;
L->roottable.next = NULL;
L->roottable.marked = 0;
L->IMtable = NULL;
L->refArray = NULL;
L->refSize = 0;
L->GCthreshold = GARBAGE_BLOCK;
L->nblocks = 0;
luaD_init();
luaS_init();
luaX_init();
luaT_init();
luaB_predefine();
}
/*
** open parts that may cause memory-allocation errors
*/
static void f_luaopen (lua_State *L, void *ud) {
int i;
global_State globalState;
lua_State luaState;
global_State *g;
#ifdef _DEBUG
luaState.allocName = "Lua_global_State";
#endif _DEBUG
luaState.l_G = &globalState;
globalState.reallocFunc = luaHelper_Realloc;
globalState.freeFunc = luaHelper_Free;
globalState.memData = luaHelper_memData;
globalState.nblocks = sizeof(lua_State) + sizeof(global_State); // Bogus.
/* create a new global state */
g = luaM_new(&luaState, global_State);
UNUSED(ud);
if (g == NULL) luaD_throw(L, LUA_ERRMEM);
L->l_G = g;
g->mainthread = L;
g->GCthreshold = 0; /* mark it as unfinished state */
g->strt.size = 0;
g->strt.nuse = 0;
g->strt.hash = NULL;
setnilvalue2n(defaultmeta(L));
setnilvalue2n(registry(L));
luaZ_initbuffer(L, &g->buff);
g->panic = default_panic;
#if !LUA_REFCOUNT
g->rootgc = NULL;
g->rootudata = NULL;
g->tmudata = NULL;
#else LUA_REFCOUNT
g->rootgc_head.next = (GCObject*)&g->rootgc_tail;
g->rootgc_head.prev = NULL;
g->rootgc_tail.next = NULL;
g->rootgc_tail.prev = (GCObject*)&g->rootgc_head;
g->rootgc_head.tt = LUA_TNIL;
g->rootgc_head.marked = 0;
g->rootgc_head.ref = 0;
g->rootgc_tail.tt = LUA_TNIL;
g->rootgc_tail.marked = 0;
g->rootgc_tail.ref = 0;
g->rootudata_head.next = (GCObject*)&g->rootudata_tail;
g->rootudata_head.prev = NULL;
g->rootudata_tail.next = NULL;
g->rootudata_tail.prev = (GCObject*)&g->rootudata_head;
g->rootudata_head.tt = LUA_TNIL;
g->rootudata_head.marked = 0;
g->rootudata_head.ref = 0;
g->rootudata_tail.tt = LUA_TNIL;
g->rootudata_tail.marked = 0;
g->rootudata_tail.ref = 0;
g->tmudata_head.next = (GCObject*)&g->tmudata_tail;
g->tmudata_head.prev = NULL;
g->tmudata_tail.next = NULL;
g->tmudata_tail.prev = (GCObject*)&g->tmudata_head;
g->tmudata_head.tt = LUA_TNIL;
g->tmudata_head.marked = 0;
g->tmudata_head.ref = 0;
g->tmudata_tail.tt = LUA_TNIL;
g->tmudata_tail.marked = 0;
g->tmudata_tail.ref = 0;
#endif LUA_REFCOUNT
setnilvalue2n(gkey(g->dummynode));
setnilvalue2n(gval(g->dummynode));
g->dummynode->next = NULL;
g->nblocks = sizeof(lua_State) + sizeof(global_State);
g->reallocFunc = luaHelper_Realloc;
g->freeFunc = luaHelper_Free;
g->memData = luaHelper_memData;
g->fatalErrorFunc = defaultFatalErrorFunc;
#ifdef LUA_MTSUPPORT
g->lockData = NULL;
g->lockFunc = NULL;
g->unlockFunc = NULL;
#endif LUA_MTSUPPORT
g->userGCFunction = NULL;
g->globalUserData = NULL;
stack_init(L, L); /* init stack */
for (i = 0; i < LUA_NTYPES; i++)
{
defaultmetatypes(L, i)->value.gc = NULL;
}
/* create default meta table with a dummy table, and then close the loop */
defaultmeta(L)->tt = LUA_TNUMBER;
defaultmeta(L)->value.gc = NULL;
sethvalue2n(defaultmeta(L), luaH_new(L, 0, 0));
__AddRefDirect(hvalue(defaultmeta(L)));
hvalue(defaultmeta(L))->metatable = hvalue(defaultmeta(L));
__AddRefDirect(hvalue(defaultmeta(L))->metatable);
/* build meta tables */
for (i = 0; i < LUA_NTYPES; i++)
{
luaM_setname(L, "Lua_defaultMetaTypes");
sethvalue2n(defaultmetatypes(L, i), luaH_new(L, 0, 0));
hvalue(defaultmetatypes(L, i))->metatable = hvalue(defaultmeta(L));
}
luaM_setname(L, "Lua_Globals");
sethvalue(gt(L), luaH_new(L, 0, 4)); /* table of globals */
__AddRefDirect(hvalue(gt(L)));
luaM_setname(L, "Lua_Registry");
sethvalue(registry(L), luaH_new(L, 4, 4)); /* registry */
__AddRef(registry(L));
g->minimumstrings = lua_minimumnumstrings;
luaS_resize(L, MINSTRTABSIZE); /* initial size of string table */
luaT_init(L);
luaX_init(L);
luaS_fix(luaS_newliteral(L, MEMERRMSG));
g->GCthreshold = 4*G(L)->nblocks;
luaZ_openspace(L, &g->buff, lua_minimumauxspace);
}
