54 lines
1.3 KiB
C++
54 lines
1.3 KiB
C++
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/*
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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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#include <vector>
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#include "util/thread.h"
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#include "util/memory_pool.h"
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namespace lean {
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memory_pool::~memory_pool() {
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while (m_free_list != nullptr) {
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void * r = m_free_list;
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m_free_list = *(reinterpret_cast<void **>(r));
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free(r);
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}
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}
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void * memory_pool::allocate() {
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if (m_free_list != nullptr) {
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void * r = m_free_list;
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m_free_list = *(reinterpret_cast<void **>(r));
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return r;
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} else {
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return malloc(m_size);
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}
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}
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typedef std::vector<memory_pool*> memory_pools;
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LEAN_THREAD_PTR(memory_pools, g_thread_pools);
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static void thread_finalize_memory_pool() {
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if (g_thread_pools) {
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unsigned i = g_thread_pools->size();
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while (i > 0) {
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--i;
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delete (*g_thread_pools)[i];
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}
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delete g_thread_pools;
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}
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}
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memory_pool * allocate_thread_memory_pool(unsigned sz) {
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if (!g_thread_pools) {
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register_post_thread_finalizer(thread_finalize_memory_pool);
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g_thread_pools = new std::vector<memory_pool*>();
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}
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memory_pool * r = new memory_pool(sz);
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g_thread_pools->push_back(r);
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return r;
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}
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}
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