45 lines
890 B
C++
45 lines
890 B
C++
//
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// immer: immutable data structures for C++
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// Copyright (C) 2016, 2017, 2018 Juan Pedro Bolivar Puente
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//
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// This software is distributed under the Boost Software License, Version 1.0.
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// See accompanying file LICENSE or copy at http://boost.org/LICENSE_1_0.txt
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//
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#pragma once
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namespace immer {
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struct disowned
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{};
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struct no_spinlock
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{
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bool try_lock() { return true; }
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void lock() {}
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void unlock() {}
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struct scoped_lock
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{
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scoped_lock(no_spinlock&) {}
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};
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};
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/*!
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* Disables reference counting, to be used with an alternative garbage
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* collection strategy like a `gc_heap`.
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*/
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struct no_refcount_policy
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{
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using spinlock_type = no_spinlock;
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no_refcount_policy(){};
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no_refcount_policy(disowned) {}
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void inc() {}
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bool dec() { return false; }
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void dec_unsafe() {}
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bool unique() { return false; }
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};
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} // namespace immer
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