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33 lines
756 B
C++
33 lines
756 B
C++
#pragma once
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#include <atomic>
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#include <cstddef>
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#include <cstdint>
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#include "platform/waiter.h"
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namespace ipc {
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template <typename U2>
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struct conn_head {
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ipc::detail::waiter cc_waiter_;
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std::atomic<U2> cc_ { 0 }; // connection counter
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auto & conn_waiter() { return this->cc_waiter_; }
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auto const & conn_waiter() const { return this->cc_waiter_; }
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std::size_t connect() noexcept {
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return cc_.fetch_add(1, std::memory_order_release);
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}
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std::size_t disconnect() noexcept {
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return cc_.fetch_sub(1, std::memory_order_release);
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}
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std::size_t conn_count(std::memory_order order = std::memory_order_acquire) const noexcept {
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return cc_.load(order);
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}
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};
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} // namespace ipc
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