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//===-- Error.h -------------------------------------------------*- C++ -*-===//
//
// 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
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_TOOLS_LLVM_EXEGESIS_ERROR_H
#define LLVM_TOOLS_LLVM_EXEGESIS_ERROR_H
#include "llvm/ADT/Twine.h"
#include "llvm/Support/Error.h"
namespace llvm {
namespace exegesis {
// A class representing failures that happened within llvm-exegesis, they are
// used to report informations to the user.
class Failure : public StringError {
public:
Failure(const Twine &S) : StringError(S, inconvertibleErrorCode()) {}
};
// A class representing failures that happened during clustering calculations.
class ClusteringError : public ErrorInfo<ClusteringError> {
public:
static char ID;
ClusteringError(const Twine &S) : Msg(S.str()) {}
void log(raw_ostream &OS) const override;
std::error_code convertToErrorCode() const override;
private:
std::string Msg;
};
// A class representing a non-descript snippet execution failure. This class
// is designed to sub-classed into more specific failures that contain
// additional data about the specific error that they represent. Instead of
// halting the program, the errors are reported in the output.
class SnippetExecutionFailure : public ErrorInfo<SnippetExecutionFailure> {
public:
static char ID;
std::error_code convertToErrorCode() const override;
};
// A class representing specifically segmentation faults that happen during
// snippet execution.
class SnippetSegmentationFault : public SnippetExecutionFailure {
public:
static char ID;
SnippetSegmentationFault(uintptr_t SegFaultAddress)
: Address(SegFaultAddress) {};
uintptr_t getAddress() { return Address; }
void log(raw_ostream &OS) const override;
private:
uintptr_t Address;
};
// A class representing all other non-specific failures that happen during
// snippet execution.
class SnippetSignal : public SnippetExecutionFailure {
public:
static char ID;
SnippetSignal(int Signal) : SignalNumber(Signal){};
void log(raw_ostream &OS) const override;
private:
int SignalNumber;
};
// A class representing a case where a perf counter was only partially
// scheduled, most likely due to perf counter contention.
struct PerfCounterNotFullyEnabled
: public ErrorInfo<PerfCounterNotFullyEnabled> {
static char ID;
PerfCounterNotFullyEnabled() {}
void log(raw_ostream &OS) const override;
std::error_code convertToErrorCode() const override;
};
} // namespace exegesis
} // namespace llvm
#endif
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