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- #include <chrono>
- #include <iostream>
- #include <string>
- #include <thread>
-
- #include "librf.h"
-
- using namespace resumef;
-
- #ifndef __GNUC__ //GCC: 没有提供__builtin_coro_frame这样的内置函数
-
- template<class _Ctype>
- static void callback_get_long(int64_t a, int64_t b, _Ctype&& cb)
- {
- std::cout << std::endl << __FUNCTION__ << " - begin" << std::endl;
-
- //编译失败。因为这个函数不是"可恢复函数(resumeable function)",甚至都不是"可等待函数(awaitable function)"
- //void* frame_ptr = _coro_frame_ptr();
-
- using namespace std::chrono;
- std::thread([=, cb = std::forward<_Ctype>(cb)]
- {
- std::this_thread::sleep_for(500ms);
- cb(a + b);
- }).detach();
-
- std::cout << __FUNCTION__ << " - end" << std::endl;
- }
-
- //这种情况下,没有生成 frame-context,因此,并没有promise_type被内嵌在frame-context里
- future_t<int64_t> awaitable_get_long(int64_t a, int64_t b)
- {
- std::cout << std::endl << __FUNCTION__ << " - begin" << std::endl;
- //编译失败。因为这个函数不是"可恢复函数(resumeable function)",仅仅是"可等待函数(awaitable function)"
- //void* frame_ptr = _coro_frame_ptr();
-
- resumef::awaitable_t<int64_t> awaitable;
- callback_get_long(a, b, [awaitable](int64_t val)
- {
- awaitable.set_value(val);
- });
-
- std::cout << __FUNCTION__ << " - end" << std::endl;
-
- return awaitable.get_future();
- }
-
- future_t<int64_t> resumeable_get_long(int64_t x, int64_t y)
- {
- std::cout << std::endl << __FUNCTION__ << " - begin" << std::endl;
-
- using future_type = future_t<int64_t>;
- using promise_type = typename future_type::promise_type;
- using state_type = typename future_type::state_type;
-
- void* frame_ptr = _coro_frame_ptr();
- auto handler = coroutine_handle<promise_type>::from_address(frame_ptr);
- promise_type* promise = &handler.promise();
- state_type* state = handler.promise().get_state();
-
- std::cout << " future size=" << sizeof(future_type) << " / " << _Align_size<future_type>() << std::endl;
- std::cout << " promise size=" << sizeof(promise_type) << " / " << _Align_size<promise_type>() << std::endl;
- std::cout << " state size=" << sizeof(state_type) << " / "<< _Align_size<state_type>() << std::endl;
- std::cout << " frame size=" << _coro_frame_size() << ", alloc size=" << state->get_alloc_size() << std::endl;
-
- std::cout << " frame ptr=" << frame_ptr << "," << (void*)&frame_ptr << std::endl;
- std::cout << " frame end=" << (void*)((char*)(frame_ptr)+_coro_frame_size()) << std::endl;
- std::cout << " promise ptr=" << promise << "," << (void*)&promise << std::endl;
- std::cout << " handle ptr=" << handler.address() << "," << (void*)&handler << std::endl;
- std::cout << " state ptr=" << state << "," << (void*)&state << std::endl;
- std::cout << " parent ptr=" << state->get_parent() << std::endl;
-
- std::cout << " x=" << x << ", &x=" << std::addressof(x) << std::endl;
- std::cout << " y=" << y << ", &y=" << std::addressof(y) << std::endl;
-
- int64_t val = co_await awaitable_get_long(x, y);
- std::cout << " val=" << val << ", &val=" << std::addressof(val) << std::endl;
-
- std::cout << __FUNCTION__ << " - end" << std::endl;
-
- co_return val;
- }
-
- //这种情况下,会生成对应的 frame-context,一个promise_type被内嵌在frame-context里
- future_t<> resumable_get_long_2(int64_t a, int64_t b, int64_t c)
- {
- int64_t v1, v2, v3;
-
- std::cout << std::endl << __FUNCTION__ << " - begin" << std::endl;
-
- using future_type = future_t<>;
- using promise_type = typename future_type::promise_type;
- using state_type = typename future_type::state_type;
-
- void* frame_ptr = _coro_frame_ptr();
- auto handler = coroutine_handle<promise_type>::from_address(frame_ptr);
- promise_type * promise = &handler.promise();
- state_type * state = handler.promise().get_state();
-
- std::cout << " future size=" << sizeof(future_type) << " / " << _Align_size<future_type>() << std::endl;
- std::cout << " promise size=" << sizeof(promise_type) << " / " << _Align_size<promise_type>() << std::endl;
- std::cout << " state size=" << sizeof(state_type) << " / "<< _Align_size<state_type>() << std::endl;
- std::cout << " frame size=" << _coro_frame_size() << ", alloc size=" << state->get_alloc_size() << std::endl;
-
- std::cout << " frame ptr=" << frame_ptr << ","<< (void*)&frame_ptr << std::endl;
- std::cout << " frame end=" << (void *)((char*)(frame_ptr) + _coro_frame_size()) << std::endl;
- std::cout << " promise ptr=" << promise << "," << (void *)&promise << std::endl;
- std::cout << " handle ptr=" << handler.address() << "," << (void*)&handler << std::endl;
- std::cout << " state ptr=" << state << "," << (void*)&state << std::endl;
- std::cout << " parent ptr=" << state->get_parent() << std::endl;
-
- std::cout << " a=" << a << ", &a=" << std::addressof(a) << std::endl;
- std::cout << " b=" << b << ", &b=" << std::addressof(b) << std::endl;
- std::cout << " c=" << c << ", &c=" << std::addressof(c) << std::endl;
-
- v1 = co_await resumeable_get_long(a, b);
- std::cout << " v1=" << v1 << ", &v1=" << std::addressof(v1) << std::endl;
-
- v2 = co_await resumeable_get_long(b, c);
- std::cout << " v2=" << v2 << ", &v2=" << std::addressof(v2) << std::endl;
-
- v3 = co_await resumeable_get_long(v1, v2);
- std::cout << " v3=" << v3 << ", &v3=" << std::addressof(v3) << std::endl;
-
- int64_t v4 = v1 * v2 * v3;
- std::cout << " v4=" << v4 << ", &v4=" << std::addressof(v4) << std::endl;
-
- std::cout << __FUNCTION__ << " - end" << std::endl;
- }
- #endif //#ifndef __GNUC__
-
- void resumable_main_layout()
- {
- std::cout << std::endl << __FUNCTION__ << " - begin" << std::endl;
-
- #ifndef __GNUC__ //GCC: 没有提供__builtin_coro_frame这样的内置函数
- go resumable_get_long_2(1, 2, 5);
- #endif //#ifndef __GNUC__
- resumef::this_scheduler()->run_until_notask();
-
- std::cout << __FUNCTION__ << " - end" << std::endl;
- }
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