| 1 | //===-- IntelPTPerThreadProcessTrace.h ------------------------ -*- C++ -*-===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | |
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| 9 | #ifndef liblldb_IntelPTPerThreadProcessTrace_H_ |
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| 10 | #define liblldb_IntelPTPerThreadProcessTrace_H_ |
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| 11 | |
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| 12 | #include "IntelPTProcessTrace.h" |
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| 13 | #include "IntelPTSingleBufferTrace.h" |
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| 14 | #include "IntelPTThreadTraceCollection.h" |
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| 15 | #include <optional> |
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| 16 | |
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| 17 | namespace lldb_private { |
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| 18 | namespace process_linux { |
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| 19 | |
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| 20 | /// Manages a "process trace" instance by tracing each thread individually. |
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| 21 | class IntelPTPerThreadProcessTrace : public IntelPTProcessTrace { |
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| 22 | public: |
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| 23 | /// Start tracing the current process by tracing each of its tids |
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| 24 | /// individually. |
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| 25 | /// |
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| 26 | /// \param[in] request |
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| 27 | /// Intel PT configuration parameters. |
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| 28 | /// |
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| 29 | /// \param[in] current_tids |
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| 30 | /// List of tids currently alive. In the future, whenever a new thread is |
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| 31 | /// spawned, they should be traced by calling the \a TraceStart(tid) method. |
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| 32 | /// |
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| 33 | /// \return |
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| 34 | /// An \a IntelPTMultiCoreTrace instance if tracing was successful, or |
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| 35 | /// an \a llvm::Error otherwise. |
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| 36 | static llvm::Expected<std::unique_ptr<IntelPTPerThreadProcessTrace>> |
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| 37 | Start(const TraceIntelPTStartRequest &request, |
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| 38 | llvm::ArrayRef<lldb::tid_t> current_tids); |
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| 39 | |
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| 40 | bool TracesThread(lldb::tid_t tid) const override; |
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| 41 | |
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| 42 | llvm::Error TraceStart(lldb::tid_t tid) override; |
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| 43 | |
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| 44 | llvm::Error TraceStop(lldb::tid_t tid) override; |
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| 45 | |
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| 46 | TraceIntelPTGetStateResponse GetState() override; |
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| 47 | |
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| 48 | llvm::Expected<std::optional<std::vector<uint8_t>>> |
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| 49 | TryGetBinaryData(const TraceGetBinaryDataRequest &request) override; |
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| 50 | |
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| 51 | private: |
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| 52 | IntelPTPerThreadProcessTrace(const TraceIntelPTStartRequest &request) |
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| 53 | : m_tracing_params(request) {} |
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| 54 | |
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| 55 | IntelPTThreadTraceCollection m_thread_traces; |
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| 56 | /// Params used to trace threads when the user started "process tracing". |
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| 57 | TraceIntelPTStartRequest m_tracing_params; |
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| 58 | }; |
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| 59 | |
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| 60 | } // namespace process_linux |
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| 61 | } // namespace lldb_private |
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| 62 | |
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| 63 | #endif // liblldb_IntelPTPerThreadProcessTrace_H_ |
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| 64 | |
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