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//===-- IntelPTDecoder.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 LLDB_SOURCE_PLUGINS_TRACE_INTEL_PT_DECODER_H
#define LLDB_SOURCE_PLUGINS_TRACE_INTEL_PT_DECODER_H
#include "intel-pt.h"
#include "DecodedThread.h"
#include "forward-declarations.h"
#include "lldb/Target/Process.h"
#include "lldb/Utility/FileSpec.h"
namespace lldb_private {
namespace trace_intel_pt {
/// Base class that handles the decoding of a thread and caches the result.
class ThreadDecoder {
public:
virtual ~ThreadDecoder() = default;
ThreadDecoder() = default;
/// Decode the thread and store the result internally, to avoid
/// recomputations.
///
/// \return
/// A \a DecodedThread instance.
DecodedThreadSP Decode();
ThreadDecoder(const ThreadDecoder &other) = delete;
ThreadDecoder &operator=(const ThreadDecoder &other) = delete;
protected:
/// Decode the thread.
///
/// \return
/// A \a DecodedThread instance.
virtual DecodedThreadSP DoDecode() = 0;
llvm::Optional<DecodedThreadSP> m_decoded_thread;
};
/// Decoder implementation for \a lldb_private::ThreadPostMortemTrace, which are
/// non-live processes that come trace session files.
class PostMortemThreadDecoder : public ThreadDecoder {
public:
/// \param[in] trace_thread
/// The thread whose trace file will be decoded.
///
/// \param[in] trace
/// The main Trace object who owns this decoder and its data.
PostMortemThreadDecoder(const lldb::ThreadPostMortemTraceSP &trace_thread,
TraceIntelPT &trace);
private:
DecodedThreadSP DoDecode() override;
lldb::ThreadPostMortemTraceSP m_trace_thread;
TraceIntelPT &m_trace;
};
class LiveThreadDecoder : public ThreadDecoder {
public:
/// \param[in] thread
/// The thread whose traces will be decoded.
///
/// \param[in] trace
/// The main Trace object who owns this decoder and its data.
LiveThreadDecoder(Thread &thread, TraceIntelPT &trace);
private:
DecodedThreadSP DoDecode() override;
lldb::ThreadSP m_thread_sp;
TraceIntelPT &m_trace;
};
} // namespace trace_intel_pt
} // namespace lldb_private
#endif // LLDB_SOURCE_PLUGINS_TRACE_INTEL_PT_DECODER_H
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