jeanlemotan
98 lines
2.0 KiB
C++
98 lines
2.0 KiB
C++
///////////////////////////////////////////////////////////////////////////////
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// Copyright (c) Lewis Baker
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// Licenced under MIT license. See LICENSE.txt for details.
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///////////////////////////////////////////////////////////////////////////////
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#include <cppcoro/cancellation_source.hpp>
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#include "cancellation_state.hpp"
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#include <cassert>
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cppcoro::cancellation_source::cancellation_source()
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: m_state(detail::cancellation_state::create())
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{
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}
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cppcoro::cancellation_source::cancellation_source(const cancellation_source& other) noexcept
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: m_state(other.m_state)
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{
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if (m_state != nullptr)
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{
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m_state->add_source_ref();
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}
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}
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cppcoro::cancellation_source::cancellation_source(cancellation_source&& other) noexcept
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: m_state(other.m_state)
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{
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other.m_state = nullptr;
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}
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cppcoro::cancellation_source::~cancellation_source()
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{
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if (m_state != nullptr)
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{
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m_state->release_source_ref();
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}
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}
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cppcoro::cancellation_source& cppcoro::cancellation_source::operator=(const cancellation_source& other) noexcept
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{
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if (m_state != other.m_state)
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{
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if (m_state != nullptr)
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{
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m_state->release_source_ref();
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}
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m_state = other.m_state;
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if (m_state != nullptr)
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{
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m_state->add_source_ref();
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}
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}
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return *this;
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}
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cppcoro::cancellation_source& cppcoro::cancellation_source::operator=(cancellation_source&& other) noexcept
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{
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if (this != &other)
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{
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if (m_state != nullptr)
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{
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m_state->release_source_ref();
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}
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m_state = other.m_state;
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other.m_state = nullptr;
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}
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return *this;
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}
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bool cppcoro::cancellation_source::can_be_cancelled() const noexcept
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{
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return m_state != nullptr;
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}
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cppcoro::cancellation_token cppcoro::cancellation_source::token() const noexcept
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{
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return cancellation_token(m_state);
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}
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void cppcoro::cancellation_source::request_cancellation()
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{
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if (m_state != nullptr)
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{
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m_state->request_cancellation();
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}
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}
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bool cppcoro::cancellation_source::is_cancellation_requested() const noexcept
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{
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return m_state != nullptr && m_state->is_cancellation_requested();
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}
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