Coverage Report

Created: 2022-01-25 06:29

/Users/buildslave/jenkins/workspace/coverage/llvm-project/lldb/include/lldb/Target/RegisterCheckpoint.h
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//===-- RegisterCheckpoint.h ------------------------------------*- C++ -*-===//
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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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#ifndef LLDB_TARGET_REGISTERCHECKPOINT_H
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#define LLDB_TARGET_REGISTERCHECKPOINT_H
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#include "lldb/Target/StackID.h"
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#include "lldb/Utility/UserID.h"
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#include "lldb/lldb-private.h"
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namespace lldb_private {
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// Inherit from UserID in case pushing/popping all register values can be done
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// using a 64 bit integer that holds a baton/cookie instead of actually having
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// to read all register values into a buffer
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class RegisterCheckpoint : public UserID {
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public:
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  enum class Reason {
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    // An expression is about to be run on the thread if the protocol that
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    // talks to the debuggee supports checkpointing the registers using a
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    // push/pop then the UserID base class in the RegisterCheckpoint can be
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    // used to store the baton/cookie that refers to the remote saved state.
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    eExpression,
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    // The register checkpoint wants the raw register bytes, so they must be
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    // read into m_data_sp, or the save/restore checkpoint should fail.
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    eDataBackup
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  };
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  RegisterCheckpoint(Reason reason) : UserID(0), m_reason(reason) {}
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  ~RegisterCheckpoint() = default;
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  lldb::DataBufferSP &GetData() { return m_data_sp; }
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  const lldb::DataBufferSP &GetData() const { return m_data_sp; }
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protected:
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  lldb::DataBufferSP m_data_sp;
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  Reason m_reason;
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  // Make RegisterCheckpointSP if you wish to share the data in this class.
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  RegisterCheckpoint(const RegisterCheckpoint &) = delete;
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  const RegisterCheckpoint &operator=(const RegisterCheckpoint &) = delete;
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};
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} // namespace lldb_private
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#endif // LLDB_TARGET_REGISTERCHECKPOINT_H