1 #ifndef _DEMEMPOOL_HPP
2 #define _DEMEMPOOL_HPP
3 /*-------------------------------------------------------------------------
4 * drawElements C++ Base Library
5 * -----------------------------
6 *
7 * Copyright 2014 The Android Open Source Project
8 *
9 * Licensed under the Apache License, Version 2.0 (the "License");
10 * you may not use this file except in compliance with the License.
11 * You may obtain a copy of the License at
12 *
13 * http://www.apache.org/licenses/LICENSE-2.0
14 *
15 * Unless required by applicable law or agreed to in writing, software
16 * distributed under the License is distributed on an "AS IS" BASIS,
17 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
18 * See the License for the specific language governing permissions and
19 * limitations under the License.
20 *
21 *//*!
22 * \file
23 * \brief Memory pool (deMemPool wrapper).
24 *//*--------------------------------------------------------------------*/
25
26 #include "deDefs.hpp"
27 #include "deMemPool.h"
28
29 #include <new>
30
31 namespace de
32 {
33
34 /*--------------------------------------------------------------------*//*!
35 * \brief Memory pool
36 *//*--------------------------------------------------------------------*/
37 class MemPool
38 {
39 public:
40 MemPool (const deMemPoolUtil* util = DE_NULL, deUint32 flags = 0u);
41 MemPool (MemPool* parent);
42 ~MemPool (void);
43
getRawPool(void)44 deMemPool* getRawPool (void) { return m_pool; }
45
getNumChildren(void) const46 int getNumChildren (void) const { return deMemPool_getNumChildren(m_pool); }
47
getNumAllocatedBytes(bool recurse) const48 deUintptr getNumAllocatedBytes (bool recurse) const { return deMemPool_getNumAllocatedBytes(m_pool, recurse ? DE_TRUE : DE_FALSE); }
getCapacity(bool recurse) const49 deUintptr getCapacity (bool recurse) const { return deMemPool_getCapacity(m_pool, recurse ? DE_TRUE : DE_FALSE); }
50
51 void* alloc (deUintptr numBytes);
52 void* alignedAlloc (deUintptr numBytes, deUint32 alignBytes);
53
54 private:
55 MemPool (const MemPool& other); // Not allowed!
56 MemPool& operator= (const MemPool& other); // Not allowed!
57
58 deMemPool* m_pool;
59 };
60
61 // MemPool utils.
62
63 char* copyToPool (de::MemPool* pool, const char* string);
64
65 // MemPool inline implementations.
66
MemPool(const deMemPoolUtil * util,deUint32 flags)67 inline MemPool::MemPool (const deMemPoolUtil* util, deUint32 flags)
68 {
69 m_pool = deMemPool_createRoot(util, flags);
70 if (!m_pool)
71 throw std::bad_alloc();
72 }
73
MemPool(MemPool * parent)74 inline MemPool::MemPool (MemPool* parent)
75 {
76 m_pool = deMemPool_create(parent->m_pool);
77 if (!m_pool)
78 throw std::bad_alloc();
79 }
80
~MemPool(void)81 inline MemPool::~MemPool (void)
82 {
83 deMemPool_destroy(m_pool);
84 }
85
alloc(deUintptr numBytes)86 inline void* MemPool::alloc (deUintptr numBytes)
87 {
88 // \todo [2013-02-07 pyry] Use deUintptr in deMemPool.
89 DE_ASSERT((deUintptr)(int)numBytes == numBytes);
90 void* ptr = deMemPool_alloc(m_pool, (int)numBytes);
91 if (!ptr)
92 throw std::bad_alloc();
93 return ptr;
94 }
95
alignedAlloc(deUintptr numBytes,deUint32 alignBytes)96 inline void* MemPool::alignedAlloc (deUintptr numBytes, deUint32 alignBytes)
97 {
98 // \todo [2013-02-07 pyry] Use deUintptr in deMemPool.
99 DE_ASSERT((deUintptr)(int)numBytes == numBytes);
100 void* ptr = deMemPool_alignedAlloc(m_pool, (int)numBytes, alignBytes);
101 if (!ptr)
102 throw std::bad_alloc();
103 return ptr;
104 }
105
106 } // de
107
108 #endif // _DEMEMPOOL_HPP
109