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1 /* -*- mesa-c++  -*-
2  *
3  * Copyright (c) 2022 Collabora LTD
4  *
5  * Author: Gert Wollny <gert.wollny@collabora.com>
6  *
7  * Permission is hereby granted, free of charge, to any person obtaining a
8  * copy of this software and associated documentation files (the "Software"),
9  * to deal in the Software without restriction, including without limitation
10  * on the rights to use, copy, modify, merge, publish, distribute, sub
11  * license, and/or sell copies of the Software, and to permit persons to whom
12  * the Software is furnished to do so, subject to the following conditions:
13  *
14  * The above copyright notice and this permission notice (including the next
15  * paragraph) shall be included in all copies or substantial portions of the
16  * Software.
17  *
18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
21  * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
22  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
23  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
24  * USE OR OTHER DEALINGS IN THE SOFTWARE.
25  */
26 
27 #ifndef MEMORYPOOL_H
28 #define MEMORYPOOL_H
29 
30 #include <cstdlib>
31 #include <memory>
32 #include <stack>
33 
34 #define R600_POINTER_TYPE(X) X *
35 
36 namespace r600  {
37 
38 void init_pool();
39 void release_pool();
40 
41 class Allocate
42 {
43 public:
44     void * operator new(size_t size);
45     void operator delete (void *p, size_t size);
46 };
47 
48 class MemoryPool  {
49 public:
50     static MemoryPool& instance();
51     static void release_all();
52 
53     void free();
54     void initialize();
55 
56     void *allocate(size_t size);
57     void *allocate(size_t size, size_t align);
58 
59 private:
60     MemoryPool() noexcept;
61 
62     struct MemoryPoolImpl* impl;
63 };
64 
65 template <typename T>
66 struct Allocator {
67    using value_type = T;
68 
69    Allocator() = default;
70    Allocator(const Allocator& other) = default;
71 
72    template <typename U>
AllocatorAllocator73    Allocator(const Allocator<U>& other) {(void)other;}
74 
allocateAllocator75    T *allocate(size_t n) {
76       return (T *)MemoryPool::instance().allocate(n * sizeof(T), alignof(T));
77    }
78 
deallocateAllocator79    void deallocate(void *p, size_t n) {
80       (void)p; (void)n;
81       //MemoryPool::instance().deallocate(p, n * sizeof(T), alignof(T));
82    }
83 
84    friend bool operator == (const Allocator<T>& lhs, const Allocator<T>& rhs) {
85       (void)lhs; (void)rhs; return true;}
86 };
87 
88 }
89 
90 #endif // MEMORYPOOL_H
91