EPCGenericDylibManager.cpp

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//===------- EPCGenericDylibManager.cpp -- Dylib management via EPC -------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
 
#include "llvm/ExecutionEngine/Orc/EPCGenericDylibManager.h"
 
#include "llvm/ExecutionEngine/Orc/Core.h"
#include "llvm/ExecutionEngine/Orc/Shared/OrcRTBridge.h"
#include "llvm/ExecutionEngine/Orc/Shared/SimpleRemoteEPCUtils.h"
 
namespace llvm {
namespace orc {
namespace shared {
 
template <>
class SPSSerializationTraits<SPSRemoteSymbolLookupSetElement,
                             SymbolLookupSet::value_type> {
public:
  static size_t size(const SymbolLookupSet::value_type &V) {
    return SPSArgList<SPSString, bool>::size(
        *V.first, V.second == SymbolLookupFlags::RequiredSymbol);
  }
 
  static bool serialize(SPSOutputBuffer &OB,
                        const SymbolLookupSet::value_type &V) {
    return SPSArgList<SPSString, bool>::serialize(
        OB, *V.first, V.second == SymbolLookupFlags::RequiredSymbol);
  }
};
 
template <>
class TrivialSPSSequenceSerialization<SPSRemoteSymbolLookupSetElement,
                                      SymbolLookupSet> {
public:
  static constexpr bool available = true;
};
 
template <>
class SPSSerializationTraits<SPSRemoteSymbolLookup,
                             DylibManager::LookupRequest> {
  using MemberSerialization =
      SPSArgList<SPSExecutorAddr, SPSRemoteSymbolLookupSet>;
 
public:
  static size_t size(const DylibManager::LookupRequest &LR) {
    return MemberSerialization::size(ExecutorAddr(LR.Handle), LR.Symbols);
  }
 
  static bool serialize(SPSOutputBuffer &OB,
                        const DylibManager::LookupRequest &LR) {
    return MemberSerialization::serialize(OB, ExecutorAddr(LR.Handle),
                                          LR.Symbols);
  }
};
 
} // end namespace shared
 
Expected<EPCGenericDylibManager>
EPCGenericDylibManager::CreateWithDefaultBootstrapSymbols(
    ExecutorProcessControl &EPC) {
  SymbolAddrs SAs;
  if (auto Err = EPC.getBootstrapSymbols(
          {{SAs.Instance, rt::SimpleExecutorDylibManagerInstanceName},
           {SAs.Open, rt::SimpleExecutorDylibManagerOpenWrapperName},
           {SAs.Lookup, rt::SimpleExecutorDylibManagerLookupWrapperName}}))
    return std::move(Err);
  return EPCGenericDylibManager(EPC, std::move(SAs));
}
 
Expected<tpctypes::DylibHandle> EPCGenericDylibManager::open(StringRef Path,
                                                             uint64_t Mode) {
  Expected<tpctypes::DylibHandle> H((ExecutorAddr()));
  if (auto Err =
          EPC.callSPSWrapper<rt::SPSSimpleExecutorDylibManagerOpenSignature>(
              SAs.Open, H, SAs.Instance, Path, Mode))
    return std::move(Err);
  return H;
}
 
void EPCGenericDylibManager::lookupAsync(tpctypes::DylibHandle H,
                                         const SymbolLookupSet &Lookup,
                                         SymbolLookupCompleteFn Complete) {
  EPC.callSPSWrapperAsync<rt::SPSSimpleExecutorDylibManagerLookupSignature>(
      SAs.Lookup,
      [Complete = std::move(Complete)](
          Error SerializationErr,
          Expected<std::vector<ExecutorSymbolDef>> Result) mutable {
        if (SerializationErr) {
          cantFail(Result.takeError());
          Complete(std::move(SerializationErr));
          return;
        }
        Complete(std::move(Result));
      },
      SAs.Instance, H, Lookup);
}
 
void EPCGenericDylibManager::lookupAsync(tpctypes::DylibHandle H,
                                         const RemoteSymbolLookupSet &Lookup,
                                         SymbolLookupCompleteFn Complete) {
  EPC.callSPSWrapperAsync<rt::SPSSimpleExecutorDylibManagerLookupSignature>(
      SAs.Lookup,
      [Complete = std::move(Complete)](
          Error SerializationErr,
          Expected<std::vector<ExecutorSymbolDef>> Result) mutable {
        if (SerializationErr) {
          cantFail(Result.takeError());
          Complete(std::move(SerializationErr));
          return;
        }
        Complete(std::move(Result));
      },
      SAs.Instance, H, Lookup);
}
 
} // end namespace orc
} // end namespace llvm