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58 lines
1.3 KiB
58 lines
1.3 KiB
#pragma once
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#include <atomic>
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#include "gp_config.hpp"
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namespace gp {
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/**
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* @brief CADR lock_guard for generic locking mechanisms
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*
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* @tparam T
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*/
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template<typename T>
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class lock_guard {
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T& ref;
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public:
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lock_guard(T& _ref)
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: ref(_ref)
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{
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ref.lock();
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}
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~lock_guard() {
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ref.unlock();
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}
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};
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/**
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* @brief A fast mutual exclusion handler WITHOUT deadlock detection
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*/
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class fast_bottleneck {
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std::atomic_bool flag;
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public:
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fast_bottleneck() = default;
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fast_bottleneck(fast_bottleneck&) = delete;
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fast_bottleneck(fast_bottleneck&&) = delete;
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void lock() {
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while(not try_lock());
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}
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[[nodiscard]] bool try_lock() {
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bool f = false;
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bool t = true;
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return flag.compare_exchange_strong(f,t,std::memory_order::acquire);
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}
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void unlock() {
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gp_config::assertion(try_unlock(), "Unlocking failed in fast_bottleneck: potential double unlocking issue");
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}
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[[nodiscard]] bool try_unlock() {
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bool f = false;
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bool t = true;
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return flag.compare_exchange_strong(t,f,std::memory_order::release);
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}
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};
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}
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