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1 | /* | |
2 | + * Copyright (C) 1996-2023 The Squid Software Foundation and contributors | |
3 | + * | |
4 | + * Squid software is distributed under GPLv2+ license and includes | |
5 | + * contributions from numerous individuals and organizations. | |
6 | + * Please see the COPYING and CONTRIBUTORS files for details. | |
7 | + */ | |
8 | ||
9 | #ifndef SQUID_MEM_POOLINGALLOCATOR_H | |
10 | #define SQUID_MEM_POOLINGALLOCATOR_H | |
11 | ||
12 | #include "mem/forward.h" | |
13 | ||
14 | /// STL Allocator that uses Squid memory pools for memory management | |
15 | template <class Value> | |
16 | class PoolingAllocator | |
17 | { | |
18 | public: | |
19 | /* STL Allocator API */ | |
20 | using value_type = Value; | |
21 | PoolingAllocator() noexcept {} | |
22 | template <class Other> PoolingAllocator(const PoolingAllocator<Other> &) noexcept {} | |
23 | value_type *allocate(std::size_t n) { return static_cast<value_type*>(memAllocRigid(n*sizeof(value_type))); } | |
24 | void deallocate(value_type *vp, std::size_t n) noexcept { memFreeRigid(vp, n*sizeof(value_type)); } | |
25 | ||
26 | template <class OtherValue> | |
27 | struct rebind { | |
28 | typedef PoolingAllocator<OtherValue> other; | |
29 | }; | |
30 | ||
31 | template<class U, class ... Args> void construct(U *p, Args && ... args) { new((void *)p) U(std::forward<Args>(args)...); } | |
32 | template<typename OtherValue> void destroy(OtherValue *p) { p->~OtherValue(); } | |
33 | }; | |
34 | ||
35 | template <class L, class R> | |
36 | inline bool | |
37 | operator ==(const PoolingAllocator<L>&, const PoolingAllocator<R>&) noexcept | |
38 | { | |
39 | return true; | |
40 | } | |
41 | ||
42 | template <class L, class R> | |
43 | inline bool | |
44 | operator !=(const PoolingAllocator<L> &l, const PoolingAllocator<R> &r) noexcept | |
45 | { | |
46 | return !(l == r); | |
47 | } | |
48 | ||
49 | #endif /* SQUID_MEM_POOLINGALLOCATOR_H */ | |
50 |