ef391df2b6
Removing the 'ess' suffix improves the ergonomics without sacrificing clarity. Since this class is likely to be used more frequently in the future it's worth some short term pain to fix this now.
130 lines
4.2 KiB
C++
130 lines
4.2 KiB
C++
//===--- SimpleExecutorDylibManager.cpp - Executor-side dylib management --===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/ExecutionEngine/Orc/TargetProcess/SimpleExecutorDylibManager.h"
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#include "llvm/ExecutionEngine/Orc/Shared/OrcRTBridge.h"
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#include "llvm/Support/FormatVariadic.h"
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#define DEBUG_TYPE "orc"
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namespace llvm {
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namespace orc {
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namespace rt_bootstrap {
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SimpleExecutorDylibManager::~SimpleExecutorDylibManager() {
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assert(Dylibs.empty() && "shutdown not called?");
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}
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Expected<tpctypes::DylibHandle>
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SimpleExecutorDylibManager::open(const std::string &Path, uint64_t Mode) {
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if (Mode != 0)
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return make_error<StringError>("open: non-zero mode bits not yet supported",
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inconvertibleErrorCode());
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const char *PathCStr = Path.empty() ? nullptr : Path.c_str();
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std::string ErrMsg;
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auto DL = sys::DynamicLibrary::getPermanentLibrary(PathCStr, &ErrMsg);
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if (!DL.isValid())
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return make_error<StringError>(std::move(ErrMsg), inconvertibleErrorCode());
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std::lock_guard<std::mutex> Lock(M);
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Dylibs[NextId] = std::move(DL);
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return NextId++;
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}
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Expected<std::vector<ExecutorAddr>>
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SimpleExecutorDylibManager::lookup(tpctypes::DylibHandle H,
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const RemoteSymbolLookupSet &L) {
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std::vector<ExecutorAddr> Result;
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std::lock_guard<std::mutex> Lock(M);
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auto I = Dylibs.find(H);
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if (I == Dylibs.end())
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return make_error<StringError>("No dylib for handle " + formatv("{0:x}", H),
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inconvertibleErrorCode());
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auto &DL = I->second;
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for (const auto &E : L) {
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if (E.Name.empty()) {
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if (E.Required)
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return make_error<StringError>("Required address for empty symbol \"\"",
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inconvertibleErrorCode());
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else
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Result.push_back(ExecutorAddr());
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} else {
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const char *DemangledSymName = E.Name.c_str();
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#ifdef __APPLE__
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if (E.Name.front() != '_')
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return make_error<StringError>(Twine("MachO symbol \"") + E.Name +
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"\" missing leading '_'",
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inconvertibleErrorCode());
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++DemangledSymName;
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#endif
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void *Addr = DL.getAddressOfSymbol(DemangledSymName);
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if (!Addr && E.Required)
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return make_error<StringError>(Twine("Missing definition for ") +
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DemangledSymName,
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inconvertibleErrorCode());
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Result.push_back(ExecutorAddr::fromPtr(Addr));
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}
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}
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return Result;
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}
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Error SimpleExecutorDylibManager::shutdown() {
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DylibsMap DM;
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{
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std::lock_guard<std::mutex> Lock(M);
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std::swap(DM, Dylibs);
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}
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// There is no removal of dylibs at the moment, so nothing to do here.
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return Error::success();
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}
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void SimpleExecutorDylibManager::addBootstrapSymbols(
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StringMap<ExecutorAddr> &M) {
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M[rt::SimpleExecutorDylibManagerInstanceName] = ExecutorAddr::fromPtr(this);
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M[rt::SimpleExecutorDylibManagerOpenWrapperName] =
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ExecutorAddr::fromPtr(&openWrapper);
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M[rt::SimpleExecutorDylibManagerLookupWrapperName] =
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ExecutorAddr::fromPtr(&lookupWrapper);
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}
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llvm::orc::shared::detail::CWrapperFunctionResult
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SimpleExecutorDylibManager::openWrapper(const char *ArgData, size_t ArgSize) {
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return shared::
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WrapperFunction<rt::SPSSimpleExecutorDylibManagerOpenSignature>::handle(
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ArgData, ArgSize,
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shared::makeMethodWrapperHandler(
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&SimpleExecutorDylibManager::open))
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.release();
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}
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llvm::orc::shared::detail::CWrapperFunctionResult
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SimpleExecutorDylibManager::lookupWrapper(const char *ArgData, size_t ArgSize) {
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return shared::
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WrapperFunction<rt::SPSSimpleExecutorDylibManagerLookupSignature>::handle(
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ArgData, ArgSize,
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shared::makeMethodWrapperHandler(
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&SimpleExecutorDylibManager::lookup))
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.release();
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}
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} // namespace rt_bootstrap
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} // end namespace orc
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} // end namespace llvm
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