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/*!A cross-platform build utility based on Lua
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* Copyright (C) 2015-present, Xmake Open Source Community.
*
* @author ruki
* @file poller_wait.c
*
*/
/* //////////////////////////////////////////////////////////////////////////////////////
* trace
*/
#define TB_TRACE_MODULE_NAME "poller_wait"
#define TB_TRACE_MODULE_DEBUG (0)
/* //////////////////////////////////////////////////////////////////////////////////////
* includes
*/
#include "prefix.h"
#include "poller.h"
/* //////////////////////////////////////////////////////////////////////////////////////
* private implementation
*/
static tb_void_t xm_io_poller_event(tb_poller_ref_t poller,
tb_poller_object_ref_t object,
tb_long_t events,
tb_cpointer_t priv) {
xm_poller_state_t *state = (xm_poller_state_t *)tb_poller_priv(poller);
tb_assert_and_check_return(state && state->lua);
// save object and events
lua_State *lua = state->lua;
lua_newtable(lua);
lua_pushinteger(lua, (tb_int_t)object->type);
lua_rawseti(lua, -2, 1);
if (priv) {
lua_pushstring(lua, (tb_char_t const *)priv);
} else {
lua_pushlightuserdata(lua, object->ref.ptr);
}
lua_rawseti(lua, -2, 2);
if (object->type == TB_POLLER_OBJECT_FWATCHER) {
lua_newtable(lua);
tb_fwatcher_event_t *event = (tb_fwatcher_event_t *)events;
if (event) {
lua_pushstring(lua, "path");
lua_pushstring(lua, event->filepath);
lua_settable(lua, -3);
lua_pushstring(lua, "type");
lua_pushinteger(lua, event->event);
lua_settable(lua, -3);
}
} else {
lua_pushinteger(lua, (tb_int_t)events);
}
lua_rawseti(lua, -2, 3);
lua_rawseti(lua, -2, ++state->events_count);
}
/* //////////////////////////////////////////////////////////////////////////////////////
* interfaces
*/
// local events, count = io.poller_wait(timeout)
tb_int_t xm_io_poller_wait(lua_State *lua) {
tb_poller_ref_t poller = xm_io_poller(lua);
tb_assert_and_check_return_val(poller && lua, 0);
// get timeout
tb_long_t timeout = (tb_long_t)luaL_checknumber(lua, 1);
// reset events count
xm_poller_state_t *state = (xm_poller_state_t *)tb_poller_priv(poller);
state->events_count = 0;
// wait it
lua_newtable(lua);
tb_long_t count = tb_poller_wait(poller, xm_io_poller_event, timeout);
if (count > 0) {
lua_pushinteger(lua, (tb_int_t)count);
return 2;
} else if (!count) {
// timeout
lua_pop(lua, 1);
lua_pushnil(lua);
lua_pushinteger(lua, 0);
return 2;
}
lua_pop(lua, 1);
lua_pushnil(lua);
lua_pushinteger(lua, -1);
return 2;
}
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