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// sol3
// The MIT License (MIT)
// Copyright (c) 2013-2019 Rapptz, ThePhD and contributors
// Permission is hereby granted, free of charge, to any person obtaining a copy of
// this software and associated documentation files (the "Software"), to deal in
// the Software without restriction, including without limitation the rights to
// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
// the Software, and to permit persons to whom the Software is furnished to do so,
// subject to the following conditions:
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
// FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
// COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
// IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
// CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
#ifndef SOL_THREAD_HPP
#define SOL_THREAD_HPP
#include "reference.hpp"
#include "object.hpp"
#include "stack.hpp"
#include "state_view.hpp"
namespace sol {
struct lua_thread_state {
lua_State* L;
lua_thread_state(lua_State* Ls)
: L(Ls) {
}
lua_State* lua_state() const noexcept {
return L;
}
operator lua_State*() const noexcept {
return lua_state();
}
lua_State* operator->() const noexcept {
return lua_state();
}
};
namespace stack {
template <>
struct unqualified_pusher<lua_thread_state> {
int push(lua_State*, lua_thread_state lts) {
lua_pushthread(lts.L);
return 1;
}
};
template <>
struct unqualified_getter<lua_thread_state> {
lua_thread_state get(lua_State* L, int index, record& tracking) {
tracking.use(1);
lua_thread_state lts( lua_tothread(L, index) );
return lts;
}
};
template <>
struct unqualified_check_getter<lua_thread_state> {
template <typename Handler>
optional<lua_thread_state> get(lua_State* L, int index, Handler&& handler, record& tracking) {
lua_thread_state lts( lua_tothread(L, index) );
if (lts.lua_state() == nullptr) {
handler(L, index, type::thread, type_of(L, index), "value is not a valid thread type");
return nullopt;
}
tracking.use(1);
return lts;
}
};
} // namespace stack
template <typename ref_t>
class basic_thread : public basic_object<ref_t> {
private:
using base_t = basic_object<ref_t>;
public:
using base_t::lua_state;
basic_thread() noexcept = default;
basic_thread(const basic_thread&) = default;
basic_thread(basic_thread&&) = default;
template <typename T, meta::enable<meta::neg<std::is_same<meta::unqualified_t<T>, basic_thread>>, is_lua_reference<meta::unqualified_t<T>>> = meta::enabler>
basic_thread(T&& r)
: base_t(std::forward<T>(r)) {
#if defined(SOL_SAFE_REFERENCES) && SOL_SAFE_REFERENCES
auto pp = stack::push_pop(*this);
constructor_handler handler{};
stack::check<basic_thread>(lua_state(), -1, handler);
#endif // Safety
}
basic_thread(const stack_reference& r)
: basic_thread(r.lua_state(), r.stack_index()){};
basic_thread(stack_reference&& r)
: basic_thread(r.lua_state(), r.stack_index()){};
basic_thread& operator=(const basic_thread&) = default;
basic_thread& operator=(basic_thread&&) = default;
template <typename T, meta::enable<is_lua_reference<meta::unqualified_t<T>>> = meta::enabler>
basic_thread(lua_State* L, T&& r)
: base_t(L, std::forward<T>(r)) {
#if defined(SOL_SAFE_REFERENCES) && SOL_SAFE_REFERENCES
auto pp = stack::push_pop(*this);
constructor_handler handler{};
stack::check<basic_thread>(lua_state(), -1, handler);
#endif // Safety
}
basic_thread(lua_State* L, int index = -1)
: base_t(L, index) {
#if defined(SOL_SAFE_REFERENCES) && SOL_SAFE_REFERENCES
constructor_handler handler{};
stack::check<basic_thread>(L, index, handler);
#endif // Safety
}
basic_thread(lua_State* L, ref_index index)
: base_t(L, index) {
#if defined(SOL_SAFE_REFERENCES) && SOL_SAFE_REFERENCES
auto pp = stack::push_pop(*this);
constructor_handler handler{};
stack::check<basic_thread>(lua_state(), -1, handler);
#endif // Safety
}
basic_thread(lua_State* L, lua_State* actualthread)
: basic_thread(L, lua_thread_state{ actualthread }) {
}
basic_thread(lua_State* L, this_state actualthread)
: basic_thread(L, lua_thread_state{ actualthread.L }) {
}
basic_thread(lua_State* L, lua_thread_state actualthread)
: base_t(L, -stack::push(L, actualthread)) {
#if defined(SOL_SAFE_REFERENCES) && SOL_SAFE_REFERENCES
constructor_handler handler{};
stack::check<basic_thread>(lua_state(), -1, handler);
#endif // Safety
if (!is_stack_based<base_t>::value) {
lua_pop(lua_state(), 1);
}
}
state_view state() const {
return state_view(this->thread_state());
}
bool is_main_thread() const {
return stack::is_main_thread(this->thread_state());
}
lua_State* thread_state() const {
auto pp = stack::push_pop(*this);
lua_State* lthread = lua_tothread(lua_state(), -1);
return lthread;
}
thread_status status() const {
lua_State* lthread = thread_state();
auto lstat = static_cast<thread_status>(lua_status(lthread));
if (lstat == thread_status::ok) {
lua_Debug ar;
if (lua_getstack(lthread, 0, &ar) > 0)
return thread_status::ok;
else if (lua_gettop(lthread) == 0)
return thread_status::dead;
else
return thread_status::yielded;
}
return lstat;
}
basic_thread create() {
return create(lua_state());
}
static basic_thread create(lua_State* L) {
lua_newthread(L);
basic_thread result(L);
if (!is_stack_based<base_t>::value) {
lua_pop(L, 1);
}
return result;
}
};
typedef basic_thread<reference> thread;
typedef basic_thread<stack_reference> stack_thread;
} // namespace sol
#endif // SOL_THREAD_HPP
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