static int l_ffi_layer_begin(knot_layer_t *ctx, void *module_param)
{
ctx->data = module_param;
LAYER_FFI_CALL(ctx, "begin");
lua_pushlightuserdata(L, module_param);
return l_ffi_call(L, 2);
}
static int l_ffi_init(struct kr_module *module)
{
lua_State *L = l_ffi_preface(module, "init");
if (!L) {
return 0;
}
return l_ffi_call(L, 1);
}
static int l_ffi_layer_fail(knot_layer_t *ctx, knot_pkt_t *pkt)
{
LAYER_FFI_CALL(ctx, "fail");
lua_pushlightuserdata(L, ctx->data);
lua_pushlightuserdata(L, pkt);
set_metatable(L, META_PKT);
return l_ffi_call(L, 3);
}
static int l_ffi_layer_finish(knot_layer_t *ctx)
{
struct kr_request *req = ctx->data;
LAYER_FFI_CALL(ctx, finish);
lua_pushlightuserdata(L, req);
lua_pushlightuserdata(L, req->answer);
return l_ffi_call(L, 3);
}
static int l_ffi_layer_produce(knot_layer_t *ctx, knot_pkt_t *pkt)
{
if (ctx->state & (KNOT_STATE_FAIL)) {
return ctx->state; /* Already failed or done, skip */
}
LAYER_FFI_CALL(ctx, produce);
lua_pushlightuserdata(L, ctx->data);
lua_pushlightuserdata(L, pkt);
return l_ffi_call(L, 3);
}
static int l_ffi_layer_consume(knot_layer_t *ctx, knot_pkt_t *pkt)
{
if (ctx->state & KNOT_STATE_FAIL) {
return ctx->state; /* Already failed, skip */
}
LAYER_FFI_CALL(ctx, "consume");
lua_pushlightuserdata(L, ctx->data);
lua_pushlightuserdata(L, pkt);
set_metatable(L, META_PKT);
return l_ffi_call(L, 3);
}
static int l_ffi_deinit(struct kr_module *module)
{
/* Deinit the module in Lua (if possible) */
int ret = 0;
lua_State *L = module->lib;
if (l_ffi_preface(module, "deinit")) {
ret = l_ffi_call(L, 1);
}
/* Free the layer API wrapper */
lua_rawgeti(L, LUA_REGISTRYINDEX, (intptr_t)module->data);
lua_getfield(L, -1, "_layer_capi");
free(lua_touserdata(L, -1));
lua_pop(L, 2);
/* Unref module and unset 'lib', so the module
* interface doesn't attempt to close it.
*/
luaL_unref(L, LUA_REGISTRYINDEX, (intptr_t)module->data);
module->lib = NULL;
return ret;
}
static int l_ffi_deinit(struct kr_module *module)
{
/* Deinit the module in Lua (if possible) */
int ret = 0;
lua_State *L = module->lib;
if (l_ffi_preface(module, "deinit")) {
ret = l_ffi_call(L, 1);
}
/* Free the layer API wrapper (unconst it) */
knot_layer_api_t* api = module->data;
if (api) {
LAYER_UNREGISTER(L, api, begin);
LAYER_UNREGISTER(L, api, finish);
LAYER_UNREGISTER(L, api, consume);
LAYER_UNREGISTER(L, api, produce);
LAYER_UNREGISTER(L, api, reset);
free(api);
}
module->lib = NULL;
return ret;
}
static int l_ffi_layer_reset(knot_layer_t *ctx)
{
LAYER_FFI_CALL(ctx, "reset");
lua_pushlightuserdata(L, ctx->data);
return l_ffi_call(L, 2);
}