bugs lua_call

[rocaltair]

bugs

kcp_output_callback(...){
...
lua_call(L, 1, 0);
...
}
DO NOT invoke a lua function in callback(C) functions using L which was passed by lua call (this call may happen in coroutine).

you need try this:
lua_State mainState = get_main_state(L);
...
/push args*/
lua_pcall(mainState, narg, nret, err);

[simonxlg]

lkcp_create 方法改成这样就可以了。

static int lkcp_create(lua_State* L){
lua_rawgeti(L, LUA_REGISTRYINDEX, LUA_RIDX_MAINTHREAD);
lua_State * ML = lua_tothread(L,-1);
lua_pop(L,1);
uint64_t handle = luaL_ref(L, LUA_REGISTRYINDEX);
int32_t conv = luaL_checkinteger(L, 1);

struct Callback* c = malloc(sizeof(struct Callback));
memset(c, 0, sizeof(struct Callback));
c -> handle = handle;
c -> L = ML;

ikcpcb* kcp = ikcp_create(conv, (void*)c);
if (kcp == NULL) {
    lua_pushnil(L);
    lua_pushstring(L, "error: fail to create kcp");
    return 2;
}

kcp->output = kcp_output_callback;

*(ikcpcb**)lua_newuserdata(L, sizeof(void*)) = kcp;
luaL_getmetatable(L, "kcp_meta");
lua_setmetatable(L, -2);
return 1;

}