6613f4aff8
Updates tpctypes::DylibHandle to be an ExecutorAddr (rather than a uint64_t), and SimpleExecutorDylibManager to hold and return raw OS handle values (as ExecutorAddrs) rather than index values into a map of DynamicLibrary instances. This will allow clients to use EPCGenericDylibManager in contexts where the existing DynamicLibrary interface is too limited to be used. (e.g. to look up JIT symbols in a dylib that was loaded with RTLD_LOCAL).
124 lines
4.0 KiB
C++
124 lines
4.0 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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auto H = ExecutorAddr::fromPtr(DL.getOSSpecificHandle());
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Dylibs.insert(DL.getOSSpecificHandle());
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return H;
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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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auto DL = sys::DynamicLibrary(H.toPtr<void *>());
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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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DylibSet DS;
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{
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std::lock_guard<std::mutex> Lock(M);
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std::swap(DS, 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::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::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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