6746bcfd68
Allow memory users to declare methods of reclaiming memory (reclaimers), and allow the main loop to declare a safe point for calling these reclaimers. The memory mananger will then schedule calls to reclaimers when memory runs low.
35 lines
746 B
C++
35 lines
746 B
C++
/*
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* Copyright (C) 2014 Cloudius Systems, Ltd.
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*/
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#ifndef MEMORY_HH_
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#define MEMORY_HH_
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#include <new>
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#include <functional>
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namespace memory {
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void* allocate_reclaimable(size_t size);
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class reclaimer {
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std::function<void ()> _reclaim;
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public:
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reclaimer(std::function<void ()> reclaim);
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~reclaimer();
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void do_reclaim() { _reclaim(); }
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};
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// We don't want the memory code calling back into the rest of
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// the system, so allow the rest of the system to tell the memory
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// code how to initiate reclaim.
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//
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// When memory is low, calling hook(fn) will result in fn being called
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// in a safe place wrt. allocations.
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void set_reclaim_hook(
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std::function<void (std::function<void ()>)> hook);
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}
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#endif /* MEMORY_HH_ */
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