réplica de
https://github.com/tearshark/librf.git
synced 2024-10-04 08:50:31 +08:00
105 líneas
2.7 KiB
C++
105 líneas
2.7 KiB
C++
#include <chrono>
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#include <iostream>
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#include <string>
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#include <thread>
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#include "librf.h"
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using namespace resumef;
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template<class _Ctype>
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static void callback_get_long(int64_t val, _Ctype&& cb)
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{
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using namespace std::chrono;
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std::thread([val, cb = std::forward<_Ctype>(cb)]
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{
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std::this_thread::sleep_for(500ms);
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cb(val * val);
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}).detach();
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}
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//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
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static future_t<int64_t> async_get_long(int64_t val)
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{
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awaitable_t<int64_t> awaitable;
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callback_get_long(val, [awaitable](int64_t val)
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{
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awaitable.set_value(val);
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});
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return awaitable.get_future();
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}
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static future_t<int64_t> wait_get_long(int64_t val)
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{
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co_return co_await async_get_long(val);
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}
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//这种情况下，会生成对应的 frame-context，一个promise_type被内嵌在frame-context里
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static future_t<int64_t> resumable_get_long(int64_t val)
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{
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std::cout << val << std::endl;
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val = co_await wait_get_long(val);
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std::cout << val << std::endl;
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val = co_await wait_get_long(val);
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std::cout << val << std::endl;
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val = co_await wait_get_long(val);
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std::cout << val << std::endl;
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co_return val;
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}
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static future_t<int64_t> loop_get_long(int64_t val)
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{
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std::cout << val << std::endl;
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for (int i = 0; i < 5; ++i)
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{
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val = co_await async_get_long(val);
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std::cout << val << std::endl;
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}
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co_return val;
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}
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static future_t<std::string&> async_get_string(std::string & ref_string)
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{
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awaitable_t<std::string&> awaitable;
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callback_get_long(std::stoi(ref_string), [awaitable, &ref_string](int64_t val)
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{
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ref_string = std::to_string(val);
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awaitable.set_value(ref_string);
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});
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return awaitable.get_future();
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}
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static future_t<std::string&> resumable_get_string(std::string& val)
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{
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std::cout << val << std::endl;
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val = co_await async_get_string(val);
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std::cout << val << std::endl;
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val = co_await async_get_string(val);
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std::cout << val << std::endl;
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val = co_await async_get_string(val);
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std::cout << val << std::endl;
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co_return static_cast<std::string&>(val);
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}
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void resumable_main_cb()
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{
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//由于使用者可能不能明确的区分是resume function返回的awaitor还是awaitable function返回的awaitor
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//导致均有可能加入到协程里去调度。
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//所以，协程调度器应该需要能处理这种情况。
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go async_get_long(3);
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this_scheduler()->run_until_notask();
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std::string ref_string{"2"};
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go resumable_get_string(ref_string);
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this_scheduler()->run_until_notask();
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GO
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{
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auto val = co_await resumable_get_long(2);
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std::cout << "GO:" << val << std::endl;
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};
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go loop_get_long(3);
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this_scheduler()->run_until_notask();
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}
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