cad379333d
See #1405 Memory consumption is still high, but I didn't manage to cross the 2Gb limit anymore with this commit even after hundreds of modifications. @gebner I'm not seeing a big difference betwee Lean without memory_pool, with bounded memory_pool and unbounded memory_pool. We may even consider removing it in the future after a more careful benchmarking. In the benchmark (https://gist.github.com/leodemoura/b27fb4203a13a67274b388a602149303), I'm getting the following numbers: - No memory_pool: runtimes between 3.532s - 3.556s - With memory_pool bounded by 8192: runtimes between 3.32s - 3.44s - With memory_pool (with no limit): runtimes between 3.32s - 3.44s On the other hand, the small object allocator makes a big difference. I used your list_rev.lean example. - with: 2.62s - without: 3.75s
46 lines
1.3 KiB
C++
46 lines
1.3 KiB
C++
/*
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Copyright (c) 2014 Microsoft Corporation. All rights reserved.
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Released under Apache 2.0 license as described in the file LICENSE.
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Author: Leonardo de Moura
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*/
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#pragma once
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#include "util/memory.h"
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#define LEAN_FREE_LIST_MAX_SIZE 8192
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namespace lean {
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/** \brief Auxiliary object for "recycling" allocated memory of fixed size */
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class memory_pool {
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unsigned m_size;
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unsigned m_free_list_size;
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void * m_free_list;
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public:
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memory_pool(unsigned size):m_size(size), m_free_list_size(0), m_free_list(nullptr) {}
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~memory_pool();
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void * allocate();
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void recycle(void * ptr) {
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#ifdef LEAN_NO_CUSTOM_ALLOCATORS
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free(ptr);
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#else
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if (m_free_list_size > LEAN_FREE_LIST_MAX_SIZE) {
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free(ptr);
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} else {
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*(reinterpret_cast<void**>(ptr)) = m_free_list;
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m_free_list = ptr;
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m_free_list_size++;
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}
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#endif
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}
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};
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memory_pool * allocate_thread_memory_pool(unsigned sz);
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#define DEF_THREAD_MEMORY_POOL(NAME, SZ) \
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LEAN_THREAD_PTR(memory_pool, NAME ## _tlocal); \
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memory_pool & NAME() { \
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if (!NAME ## _tlocal) \
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NAME ## _tlocal = allocate_thread_memory_pool(SZ); \
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return *(NAME ## _tlocal); \
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}
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}
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