Hi,
I never used Lua coroutines, so don't know if this is going to solve your
problem or not. But I would like to help you.
Can you build a very small example that demonstrates the problem?
In the solution you propose, the stored context reference will be used
anywhere else?
Thanks,
Scuri
From: zcs_chenxiao [mailto:[email protected]]
Sent: sexta-feira, 27 de abril de 2012 03:00
To: IUP discussion list
Subject: [Iup-users] crash when using iuplua with lua coroutine, and a temp
patch
I using lua coroutine , and in the lua thread , I create iup controls, then
when the lua thread end and gc, game crash.
the patch can avoid the crash , but I can't sure where to free the lua ref.
change the iuplua.c
void iuplua_plugstate(lua_State *L, Ihandle *ih)
{
int ref;
lua_pushthread(L);
ref=lua_ref(L,LUA_REGISTRYINDEX); /*keep ref for L, L maybe a
thread*/
IupSetAttribute(ih, "_IUPLUA_STATE_CONTEXT",(char *) L);
IupSetAttribute(ih, "_IUPLUA_STATE_CONTEXT_REF",(char *) ref);
printf("iuplua_plugstate %d\n",ref);
}
???? maybe free the ref on this function 'il_destroy_cb' ?????
static int il_destroy_cb(Ihandle* ih)
{
/* called from IupDestroy. */
char* sref = IupGetAttribute(ih, "_IUPLUA_WIDGET_TABLE_REF");
if (sref)
{
lua_State *L = iuplua_getstate(ih);
int ref = atoi(sref);
/* removes the ihandle reference in the lua table */
/* object.handle = nil */
lua_rawgeti(L, LUA_REGISTRYINDEX, ref); /* push object */
lua_pushstring(L, "handle");
lua_pushnil(L);
lua_settable(L, -3);
lua_pop(L,1);
/* removes the association of the ihandle with the lua table */
luaL_unref(L, LUA_REGISTRYINDEX, ref); /* this is the complement of
SetWidget */
IupSetAttribute(ih, "_IUPLUA_WIDGET_TABLE_REF", NULL);
IupSetCallback(ih, "LDESTROY_CB", NULL);
}
sref = IupGetAttribute(ih, "_IUPLUA_STATE_CONTEXT_REF");
if (sref)
{
lua_State *L = iuplua_getstate(ih);
int ref=(int)sref;
lua_unref(L,ref);
IupSetAttribute(ih, "_IUPLUA_STATE_CONTEXT_REF", NULL);
printf("il_destroy_cb %d\n",ref);
}
return IUP_DEFAULT;
}
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