1//===- EPCGenericJITLinkMemoryManager.h - EPC-based mem manager -*- 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 by making remove calls via
10// ExecutorProcessControl::callWrapperAsync.
11//
12// This simplifies the implementaton of new ExecutorProcessControl instances,
13// as this implementation will always work (at the cost of some performance
14// overhead for the calls).
15//
16//===----------------------------------------------------------------------===//
17
18#ifndef LLVM_EXECUTIONENGINE_ORC_EPCGENERICJITLINKMEMORYMANAGER_H
19#define LLVM_EXECUTIONENGINE_ORC_EPCGENERICJITLINKMEMORYMANAGER_H
20
21#include "llvm/ExecutionEngine/JITLink/JITLinkMemoryManager.h"
22#include "llvm/ExecutionEngine/Orc/Core.h"
23
24namespace llvm {
25namespace orc {
26
27class EPCGenericJITLinkMemoryManager : public jitlink::JITLinkMemoryManager {
28public:
29 /// Function addresses for memory access.
30 struct SymbolAddrs {
31 ExecutorAddr Allocator;
32 ExecutorAddr Reserve;
33 ExecutorAddr Finalize;
34 ExecutorAddr Deallocate;
35 };
36
37 /// Create an EPCGenericJITLinkMemoryManager instance from a given set of
38 /// function addrs.
39 EPCGenericJITLinkMemoryManager(ExecutorProcessControl &EPC, SymbolAddrs SAs)
40 : EPC(EPC), SAs(SAs) {}
41
42 void allocate(const jitlink::JITLinkDylib *JD, jitlink::LinkGraph &G,
43 OnAllocatedFunction OnAllocated) override;
44
45 // Use overloads from base class.
46 using JITLinkMemoryManager::allocate;
47
48 void deallocate(std::vector<FinalizedAlloc> Allocs,
49 OnDeallocatedFunction OnDeallocated) override;
50
51 // Use overloads from base class.
52 using JITLinkMemoryManager::deallocate;
53
54private:
55 class InFlightAlloc;
56
57 void completeAllocation(ExecutorAddr AllocAddr, jitlink::BasicLayout BL,
58 OnAllocatedFunction OnAllocated);
59
60 ExecutorProcessControl &EPC;
61 SymbolAddrs SAs;
62};
63
64namespace shared {
65
66/// FIXME: This specialization should be moved into TargetProcessControlTypes.h
67/// (or wherever those types get merged to) once ORC depends on JITLink.
68template <>
69class SPSSerializationTraits<SPSExecutorAddr,
70 jitlink::JITLinkMemoryManager::FinalizedAlloc> {
71public:
72 static size_t size(const jitlink::JITLinkMemoryManager::FinalizedAlloc &FA) {
73 return SPSArgList<SPSExecutorAddr>::size(Arg: ExecutorAddr(FA.getAddress()));
74 }
75
76 static bool
77 serialize(SPSOutputBuffer &OB,
78 const jitlink::JITLinkMemoryManager::FinalizedAlloc &FA) {
79 return SPSArgList<SPSExecutorAddr>::serialize(
80 OB, Arg: ExecutorAddr(FA.getAddress()));
81 }
82
83 static bool deserialize(SPSInputBuffer &IB,
84 jitlink::JITLinkMemoryManager::FinalizedAlloc &FA) {
85 ExecutorAddr A;
86 if (!SPSArgList<SPSExecutorAddr>::deserialize(IB, Arg&: A))
87 return false;
88 FA = jitlink::JITLinkMemoryManager::FinalizedAlloc(A);
89 return true;
90 }
91};
92
93} // end namespace shared
94} // end namespace orc
95} // end namespace llvm
96
97#endif // LLVM_EXECUTIONENGINE_ORC_EPCGENERICJITLINKMEMORYMANAGER_H
98

source code of llvm/include/llvm/ExecutionEngine/Orc/EPCGenericJITLinkMemoryManager.h