1 | //===--------------- MapperJITLinkMemoryManager.h -*- C++ -*---------------===// |
2 | // |
3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
4 | // See https://llvm.org/LICENSE.txt for license information. |
5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
6 | // |
7 | //===----------------------------------------------------------------------===// |
8 | // |
9 | // Implements JITLinkMemoryManager using MemoryMapper |
10 | // |
11 | //===----------------------------------------------------------------------===// |
12 | |
13 | #ifndef LLVM_EXECUTIONENGINE_ORC_MAPPERJITLINKMEMORYMANAGER_H |
14 | #define LLVM_EXECUTIONENGINE_ORC_MAPPERJITLINKMEMORYMANAGER_H |
15 | |
16 | #include "llvm/ADT/IntervalMap.h" |
17 | #include "llvm/ExecutionEngine/JITLink/JITLinkMemoryManager.h" |
18 | #include "llvm/ExecutionEngine/Orc/MemoryMapper.h" |
19 | |
20 | namespace llvm { |
21 | namespace orc { |
22 | |
23 | class MapperJITLinkMemoryManager : public jitlink::JITLinkMemoryManager { |
24 | public: |
25 | MapperJITLinkMemoryManager(size_t ReservationGranularity, |
26 | std::unique_ptr<MemoryMapper> Mapper); |
27 | |
28 | template <class MemoryMapperType, class... Args> |
29 | static Expected<std::unique_ptr<MapperJITLinkMemoryManager>> |
30 | CreateWithMapper(size_t ReservationGranularity, Args &&...A) { |
31 | auto Mapper = MemoryMapperType::Create(std::forward<Args>(A)...); |
32 | if (!Mapper) |
33 | return Mapper.takeError(); |
34 | |
35 | return std::make_unique<MapperJITLinkMemoryManager>(ReservationGranularity, |
36 | std::move(*Mapper)); |
37 | } |
38 | |
39 | void allocate(const jitlink::JITLinkDylib *JD, jitlink::LinkGraph &G, |
40 | OnAllocatedFunction OnAllocated) override; |
41 | // synchronous overload |
42 | using JITLinkMemoryManager::allocate; |
43 | |
44 | void deallocate(std::vector<FinalizedAlloc> Allocs, |
45 | OnDeallocatedFunction OnDeallocated) override; |
46 | // synchronous overload |
47 | using JITLinkMemoryManager::deallocate; |
48 | |
49 | private: |
50 | class InFlightAlloc; |
51 | |
52 | std::mutex Mutex; |
53 | |
54 | // We reserve multiples of this from the executor address space |
55 | size_t ReservationUnits; |
56 | |
57 | // Ranges that have been reserved in executor but not yet allocated |
58 | using AvailableMemoryMap = IntervalMap<ExecutorAddr, bool>; |
59 | AvailableMemoryMap::Allocator AMAllocator; |
60 | IntervalMap<ExecutorAddr, bool> AvailableMemory; |
61 | |
62 | // Ranges that have been reserved in executor and already allocated |
63 | DenseMap<ExecutorAddr, ExecutorAddrDiff> UsedMemory; |
64 | |
65 | std::unique_ptr<MemoryMapper> Mapper; |
66 | }; |
67 | |
68 | } // end namespace orc |
69 | } // end namespace llvm |
70 | |
71 | #endif // LLVM_EXECUTIONENGINE_ORC_MAPPERJITLINKMEMORYMANAGER_H |
72 | |