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46f1687baa
This patch adds new errors and error checking to the ObjectLinkingLayer to catch cases where a compiled or loaded object either: (1) Contains definitions not covered by its responsibility set, or (2) Is missing definitions that are covered by its responsibility set. Proir to this patch providing the correct set of definitions was treated as an API contract requirement, however this requires that the client be confident in the correctness of the whole compiler / object-cache pipeline and results in difficult-to-debug assertions upon failure. Treating this as a recoverable error results in clearer diagnostics. The performance overhead of this check is one comparison of densemap keys (symbol string pointers) per linking object, which is minimal. If this overhead ever becomes a problem we can add the check under a flag that can be turned off if the client fully trusts the rest of the pipeline.
122 lines
4.1 KiB
C++
122 lines
4.1 KiB
C++
//===---------------- OrcError.cpp - Error codes for ORC ------------------===//
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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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//
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// Error codes for ORC.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/ExecutionEngine/Orc/OrcError.h"
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#include "llvm/Support/ErrorHandling.h"
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#include "llvm/Support/ManagedStatic.h"
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#include <type_traits>
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using namespace llvm;
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using namespace llvm::orc;
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namespace {
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// FIXME: This class is only here to support the transition to llvm::Error. It
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// will be removed once this transition is complete. Clients should prefer to
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// deal with the Error value directly, rather than converting to error_code.
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class OrcErrorCategory : public std::error_category {
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public:
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const char *name() const noexcept override { return "orc"; }
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std::string message(int condition) const override {
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switch (static_cast<OrcErrorCode>(condition)) {
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case OrcErrorCode::UnknownORCError:
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return "Unknown ORC error";
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case OrcErrorCode::DuplicateDefinition:
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return "Duplicate symbol definition";
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case OrcErrorCode::JITSymbolNotFound:
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return "JIT symbol not found";
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case OrcErrorCode::RemoteAllocatorDoesNotExist:
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return "Remote allocator does not exist";
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case OrcErrorCode::RemoteAllocatorIdAlreadyInUse:
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return "Remote allocator Id already in use";
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case OrcErrorCode::RemoteMProtectAddrUnrecognized:
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return "Remote mprotect call references unallocated memory";
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case OrcErrorCode::RemoteIndirectStubsOwnerDoesNotExist:
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return "Remote indirect stubs owner does not exist";
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case OrcErrorCode::RemoteIndirectStubsOwnerIdAlreadyInUse:
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return "Remote indirect stubs owner Id already in use";
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case OrcErrorCode::RPCConnectionClosed:
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return "RPC connection closed";
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case OrcErrorCode::RPCCouldNotNegotiateFunction:
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return "Could not negotiate RPC function";
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case OrcErrorCode::RPCResponseAbandoned:
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return "RPC response abandoned";
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case OrcErrorCode::UnexpectedRPCCall:
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return "Unexpected RPC call";
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case OrcErrorCode::UnexpectedRPCResponse:
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return "Unexpected RPC response";
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case OrcErrorCode::UnknownErrorCodeFromRemote:
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return "Unknown error returned from remote RPC function "
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"(Use StringError to get error message)";
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case OrcErrorCode::UnknownResourceHandle:
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return "Unknown resource handle";
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case OrcErrorCode::MissingSymbolDefinitions:
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return "MissingSymbolsDefinitions";
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case OrcErrorCode::UnexpectedSymbolDefinitions:
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return "UnexpectedSymbolDefinitions";
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}
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llvm_unreachable("Unhandled error code");
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}
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};
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static ManagedStatic<OrcErrorCategory> OrcErrCat;
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}
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namespace llvm {
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namespace orc {
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char DuplicateDefinition::ID = 0;
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char JITSymbolNotFound::ID = 0;
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std::error_code orcError(OrcErrorCode ErrCode) {
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typedef std::underlying_type<OrcErrorCode>::type UT;
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return std::error_code(static_cast<UT>(ErrCode), *OrcErrCat);
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}
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DuplicateDefinition::DuplicateDefinition(std::string SymbolName)
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: SymbolName(std::move(SymbolName)) {}
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std::error_code DuplicateDefinition::convertToErrorCode() const {
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return orcError(OrcErrorCode::DuplicateDefinition);
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}
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void DuplicateDefinition::log(raw_ostream &OS) const {
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OS << "Duplicate definition of symbol '" << SymbolName << "'";
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}
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const std::string &DuplicateDefinition::getSymbolName() const {
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return SymbolName;
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}
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JITSymbolNotFound::JITSymbolNotFound(std::string SymbolName)
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: SymbolName(std::move(SymbolName)) {}
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std::error_code JITSymbolNotFound::convertToErrorCode() const {
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typedef std::underlying_type<OrcErrorCode>::type UT;
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return std::error_code(static_cast<UT>(OrcErrorCode::JITSymbolNotFound),
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*OrcErrCat);
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}
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void JITSymbolNotFound::log(raw_ostream &OS) const {
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OS << "Could not find symbol '" << SymbolName << "'";
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}
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const std::string &JITSymbolNotFound::getSymbolName() const {
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return SymbolName;
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}
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}
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}
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