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 39 init_pool(); 40 void 41 release_pool(); 42 43 class Allocate { 44 public: 45 void *operator new(size_t size); 46 void operator delete(void *p, size_t size); 47 }; 48 49 class MemoryPool { 50 public: 51 static MemoryPool& instance(); 52 static void release_all(); 53 54 void free(); 55 void initialize(); 56 57 void *allocate(size_t size); 58 void *allocate(size_t size, size_t align); 59 60 private: 61 MemoryPool() noexcept; 62 63 struct MemoryPoolImpl *impl; 64 }; 65 66 template <typename T> struct Allocator { 67 using value_type = T; 68 69 Allocator() = default; 70 Allocator(const Allocator& other) = default; 71 AllocatorAllocator72 template <typename U> Allocator(const Allocator<U>& other) { (void)other; } 73 allocateAllocator74 T *allocate(size_t n) 75 { 76 return (T *)MemoryPool::instance().allocate(n * sizeof(T), alignof(T)); 77 } 78 deallocateAllocator79 void deallocate(void *p, size_t n) 80 { 81 (void)p; 82 (void)n; 83 // MemoryPool::instance().deallocate(p, n * sizeof(T), alignof(T)); 84 } 85 86 friend bool operator==(const Allocator<T>& lhs, const Allocator<T>& rhs) 87 { 88 (void)lhs; 89 (void)rhs; 90 return true; 91 } 92 }; 93 94 } // namespace r600 95 96 #endif // MEMORYPOOL_H 97