afb81b8278
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64 lines
1.3 KiB
C++
64 lines
1.3 KiB
C++
// This file is part of Desktop App Toolkit,
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// a set of libraries for developing nice desktop applications.
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//
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// For license and copyright information please follow this link:
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// https://github.com/desktop-app/legal/blob/master/LEGAL
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//
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#pragma once
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#include <crl/common/crl_common_config.h>
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#include <crl/common/crl_common_list.h>
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#include <crl/common/crl_common_utils.h>
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#include <atomic>
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#ifndef CRL_USE_COMMON_QUEUE
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#define CRL_USE_COMMON_QUEUE
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#endif // !CRL_USE_COMMON_QUEUE
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namespace crl {
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namespace details {
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class main_queue_pointer;
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} // namespace details
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class queue {
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public:
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queue();
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queue(const queue &other) = delete;
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queue &operator=(const queue &other) = delete;
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template <typename Callable>
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void async(Callable &&callable) {
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if (_list.push_is_first(std::forward<Callable>(callable))) {
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wake_async();
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}
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}
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template <typename Callable>
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void sync(Callable &&callable) {
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semaphore waiter;
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async([&] {
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const auto guard = details::finally([&] { waiter.release(); });
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callable();
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});
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waiter.acquire();
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}
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private:
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friend class details::main_queue_pointer;
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static void ProcessCallback(void *that);
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queue(main_queue_processor processor);
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void wake_async();
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void process();
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main_queue_processor _main_processor = nullptr;
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details::list _list;
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std::atomic_flag _queued = ATOMIC_FLAG_INIT;
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};
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} // namespace crl
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