1 files changed, 93 insertions, 0 deletions
diff --git a/contrib/llvm-project/lldb/source/Plugins/Trace/intel-pt/TraceCursorIntelPT.h b/contrib/llvm-project/lldb/source/Plugins/Trace/intel-pt/TraceCursorIntelPT.h
new file mode 100644
index 000000000000..14240d9d0028
--- /dev/null
+++ b/contrib/llvm-project/lldb/source/Plugins/Trace/intel-pt/TraceCursorIntelPT.h
@@ -0,0 +1,93 @@
+//===-- TraceCursorIntelPT.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_TRACECURSORINTELPT_H
+#define LLDB_SOURCE_PLUGINS_TRACE_INTEL_PT_TRACECURSORINTELPT_H
+
+#include "ThreadDecoder.h"
+#include <optional>
+
+namespace lldb_private {
+namespace trace_intel_pt {
+
+class TraceCursorIntelPT : public TraceCursor {
+public:
+  TraceCursorIntelPT(
+      lldb::ThreadSP thread_sp, DecodedThreadSP decoded_thread_sp,
+      const std::optional<LinuxPerfZeroTscConversion> &tsc_conversion,
+      std::optional<uint64_t> beginning_of_time_nanos);
+
+  bool Seek(int64_t offset, lldb::TraceCursorSeekType origin) override;
+
+  void Next() override;
+
+  bool HasValue() const override;
+
+  llvm::StringRef GetError() const override;
+
+  lldb::addr_t GetLoadAddress() const override;
+
+  lldb::TraceEvent GetEventType() const override;
+
+  lldb::cpu_id_t GetCPU() const override;
+
+  std::optional<uint64_t> GetHWClock() const override;
+
+  lldb::TraceItemKind GetItemKind() const override;
+
+  bool GoToId(lldb::user_id_t id) override;
+
+  lldb::user_id_t GetId() const override;
+
+  bool HasId(lldb::user_id_t id) const override;
+
+  std::optional<double> GetWallClockTime() const override;
+
+  std::optional<std::string> GetSyncPointMetadata() const override;
+
+private:
+  /// Clear the current TSC and nanoseconds ranges if after moving they are not
+  /// valid anymore.
+  void ClearTimingRangesIfInvalid();
+
+  /// Get or calculate the TSC range that includes the current trace item.
+  const std::optional<DecodedThread::TSCRange> &GetTSCRange() const;
+
+  /// Get or calculate the TSC range that includes the current trace item.
+  const std::optional<DecodedThread::NanosecondsRange> &
+  GetNanosecondsRange() const;
+
+  /// Storage of the actual instructions
+  DecodedThreadSP m_decoded_thread_sp;
+  /// Internal instruction index currently pointing at.
+  int64_t m_pos;
+
+  /// Timing information and cached values.
+  /// \{
+
+  /// TSC -> nanos conversion utility. \a std::nullopt if not available at all.
+  std::optional<LinuxPerfZeroTscConversion> m_tsc_conversion;
+  /// Lowest nanoseconds timestamp seen in any thread trace, \a std::nullopt if
+  /// not available at all.
+  std::optional<uint64_t> m_beginning_of_time_nanos;
+  /// Range of trace items with the same TSC that includes the current trace
+  /// item, \a std::nullopt if not calculated or not available.
+  std::optional<DecodedThread::TSCRange> mutable m_tsc_range;
+  bool mutable m_tsc_range_calculated = false;
+  /// Range of trace items with the same non-interpolated timestamps in
+  /// nanoseconds that includes the current trace item, \a std::nullopt if not
+  /// calculated or not available.
+  std::optional<DecodedThread::NanosecondsRange> mutable m_nanoseconds_range;
+  bool mutable m_nanoseconds_range_calculated = false;
+  /// \}
+};
+
+} // namespace trace_intel_pt
+} // namespace lldb_private
+
+#endif // LLDB_SOURCE_PLUGINS_TRACE_INTEL_PT_TRACECURSORINTELPT_H