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authorHarpreet2016-09-03 00:34:27 +0530
committerHarpreet2016-09-03 00:34:27 +0530
commit4b64cf486f5c999fd8167758cae27839f3b50848 (patch)
treed9d06639fb7fa61aef59be0363655e4747105ec7 /build/Bonmin/include/coin/CoinAlloc.hpp
parentd19794fb80a271a4c885ed90f97cfc12baa012f2 (diff)
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Structure updated and intqpipopt files added
Diffstat (limited to 'build/Bonmin/include/coin/CoinAlloc.hpp')
-rw-r--r--build/Bonmin/include/coin/CoinAlloc.hpp176
1 files changed, 0 insertions, 176 deletions
diff --git a/build/Bonmin/include/coin/CoinAlloc.hpp b/build/Bonmin/include/coin/CoinAlloc.hpp
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--- a/build/Bonmin/include/coin/CoinAlloc.hpp
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-/* $Id: CoinAlloc.hpp 1438 2011-06-09 18:14:12Z stefan $ */
-// Copyright (C) 2007, International Business Machines
-// Corporation and others. All Rights Reserved.
-// This code is licensed under the terms of the Eclipse Public License (EPL).
-
-#ifndef CoinAlloc_hpp
-#define CoinAlloc_hpp
-
-#include "CoinUtilsConfig.h"
-#include <cstdlib>
-
-#if !defined(COINUTILS_MEMPOOL_MAXPOOLED)
-# define COINUTILS_MEMPOOL_MAXPOOLED -1
-#endif
-
-#if (COINUTILS_MEMPOOL_MAXPOOLED >= 0)
-
-#ifndef COINUTILS_MEMPOOL_ALIGNMENT
-#define COINUTILS_MEMPOOL_ALIGNMENT 16
-#endif
-
-/* Note:
- This memory pool implementation assumes that sizeof(size_t) and
- sizeof(void*) are both <= COINUTILS_MEMPOOL_ALIGNMENT.
- Choosing an alignment of 4 will cause segfault on 64-bit platforms and may
- lead to bad performance on 32-bit platforms. So 8 is a mnimum recommended
- alignment. Probably 16 does not waste too much space either and may be even
- better for performance. One must play with it.
-*/
-
-//#############################################################################
-
-#if (COINUTILS_MEMPOOL_ALIGNMENT == 16)
-static const std::size_t CoinAllocPtrShift = 4;
-static const std::size_t CoinAllocRoundMask = ~((std::size_t)15);
-#elif (COINUTILS_MEMPOOL_ALIGNMENT == 8)
-static const std::size_t CoinAllocPtrShift = 3;
-static const std::size_t CoinAllocRoundMask = ~((std::size_t)7);
-#else
-#error "COINUTILS_MEMPOOL_ALIGNMENT must be defined as 8 or 16 (or this code needs to be changed :-)"
-#endif
-
-//#############################################################################
-
-#ifndef COIN_MEMPOOL_SAVE_BLOCKHEADS
-# define COIN_MEMPOOL_SAVE_BLOCKHEADS 0
-#endif
-
-//#############################################################################
-
-class CoinMempool
-{
-private:
-#if (COIN_MEMPOOL_SAVE_BLOCKHEADS == 1)
- char** block_heads;
- std::size_t block_num;
- std::size_t max_block_num;
-#endif
-#if defined(COINUTILS_PTHREADS) && (COINUTILS_PTHREAD == 1)
- pthread_mutex_t mutex_;
-#endif
- int last_block_size_;
- char* first_free_;
- const std::size_t entry_size_;
-
-private:
- CoinMempool(const CoinMempool&);
- CoinMempool& operator=(const CoinMempool&);
-
-private:
- char* allocate_new_block();
- inline void lock_mutex() {
-#if defined(COINUTILS_PTHREADS) && (COINUTILS_PTHREAD == 1)
- pthread_mutex_lock(&mutex_);
-#endif
- }
- inline void unlock_mutex() {
-#if defined(COINUTILS_PTHREADS) && (COINUTILS_PTHREAD == 1)
- pthread_mutex_unlock(&mutex_);
-#endif
- }
-
-public:
- CoinMempool(std::size_t size = 0);
- ~CoinMempool();
-
- char* alloc();
- inline void dealloc(char *p)
- {
- char** pp = (char**)p;
- lock_mutex();
- *pp = first_free_;
- first_free_ = p;
- unlock_mutex();
- }
-};
-
-//#############################################################################
-
-/** A memory pool allocator.
-
- If a request arrives for allocating \c n bytes then it is first
- rounded up to the nearest multiple of \c sizeof(void*) (this is \c
- n_roundup), then one more \c sizeof(void*) is added to this
- number. If the result is no more than maxpooled_ then
- the appropriate pool is used to get a chunk of memory, if not,
- then malloc is used. In either case, the size of the allocated
- chunk is written into the first \c sizeof(void*) bytes and a
- pointer pointing afterwards is returned.
-*/
-
-class CoinAlloc
-{
-private:
- CoinMempool* pool_;
- int maxpooled_;
-public:
- CoinAlloc();
- ~CoinAlloc() {}
-
- inline void* alloc(const std::size_t n)
- {
- if (maxpooled_ <= 0) {
- return std::malloc(n);
- }
- char *p = NULL;
- const std::size_t to_alloc =
- ((n+COINUTILS_MEMPOOL_ALIGNMENT-1) & CoinAllocRoundMask) +
- COINUTILS_MEMPOOL_ALIGNMENT;
- CoinMempool* pool = NULL;
- if (maxpooled_ > 0 && to_alloc >= (size_t)maxpooled_) {
- p = static_cast<char*>(std::malloc(to_alloc));
- if (p == NULL) throw std::bad_alloc();
- } else {
- pool = pool_ + (to_alloc >> CoinAllocPtrShift);
- p = pool->alloc();
- }
- *((CoinMempool**)p) = pool;
- return static_cast<void*>(p+COINUTILS_MEMPOOL_ALIGNMENT);
- }
-
- inline void dealloc(void* p)
- {
- if (maxpooled_ <= 0) {
- std::free(p);
- return;
- }
- if (p) {
- char* base = static_cast<char*>(p)-COINUTILS_MEMPOOL_ALIGNMENT;
- CoinMempool* pool = *((CoinMempool**)base);
- if (!pool) {
- std::free(base);
- } else {
- pool->dealloc(base);
- }
- }
- }
-};
-
-extern CoinAlloc CoinAllocator;
-
-//#############################################################################
-
-#if defined(COINUTILS_MEMPOOL_OVERRIDE_NEW) && (COINUTILS_MEMPOOL_OVERRIDE_NEW == 1)
-void* operator new(std::size_t size) throw (std::bad_alloc);
-void* operator new[](std::size_t) throw (std::bad_alloc);
-void operator delete(void*) throw();
-void operator delete[](void*) throw();
-void* operator new(std::size_t, const std::nothrow_t&) throw();
-void* operator new[](std::size_t, const std::nothrow_t&) throw();
-void operator delete(void*, const std::nothrow_t&) throw();
-void operator delete[](void*, const std::nothrow_t&) throw();
-#endif
-
-#endif /*(COINUTILS_MEMPOOL_MAXPOOLED >= 0)*/
-#endif