b8d1776fc5
This updates the documentation of the gdb-remote protocol, as well as the help messages, to include the new --per-core-tracing option. Differential Revision: https://reviews.llvm.org/D124640
116 lines
4.5 KiB
C++
116 lines
4.5 KiB
C++
//===-- CommandObjectTraceStartIntelPT.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_SOURCE_PLUGINS_TRACE_INTEL_PT_COMMANDOBJECTTRACESTARTINTELPT_H
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#define LLDB_SOURCE_PLUGINS_TRACE_INTEL_PT_COMMANDOBJECTTRACESTARTINTELPT_H
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#include "../../../../source/Commands/CommandObjectTrace.h"
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#include "TraceIntelPT.h"
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#include "lldb/Interpreter/CommandInterpreter.h"
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#include "lldb/Interpreter/CommandReturnObject.h"
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namespace lldb_private {
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namespace trace_intel_pt {
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class CommandObjectThreadTraceStartIntelPT
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: public CommandObjectMultipleThreads {
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public:
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class CommandOptions : public Options {
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public:
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CommandOptions() : Options() { OptionParsingStarting(nullptr); }
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Status SetOptionValue(uint32_t option_idx, llvm::StringRef option_arg,
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ExecutionContext *execution_context) override;
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void OptionParsingStarting(ExecutionContext *execution_context) override;
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llvm::ArrayRef<OptionDefinition> GetDefinitions() override;
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size_t m_trace_buffer_size;
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bool m_enable_tsc;
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llvm::Optional<size_t> m_psb_period;
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};
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CommandObjectThreadTraceStartIntelPT(TraceIntelPT &trace,
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CommandInterpreter &interpreter)
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: CommandObjectMultipleThreads(
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interpreter, "thread trace start",
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"Start tracing one or more threads with intel-pt. "
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"Defaults to the current thread. Thread indices can be "
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"specified as arguments.\n Use the thread-index \"all\" to trace "
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"all threads including future threads.",
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"thread trace start [<thread-index> <thread-index> ...] "
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"[<intel-pt-options>]",
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lldb::eCommandRequiresProcess | lldb::eCommandTryTargetAPILock |
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lldb::eCommandProcessMustBeLaunched |
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lldb::eCommandProcessMustBePaused),
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m_trace(trace), m_options() {}
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Options *GetOptions() override { return &m_options; }
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protected:
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bool DoExecuteOnThreads(Args &command, CommandReturnObject &result,
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llvm::ArrayRef<lldb::tid_t> tids) override;
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TraceIntelPT &m_trace;
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CommandOptions m_options;
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};
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class CommandObjectProcessTraceStartIntelPT : public CommandObjectParsed {
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public:
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class CommandOptions : public Options {
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public:
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CommandOptions() : Options() { OptionParsingStarting(nullptr); }
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Status SetOptionValue(uint32_t option_idx, llvm::StringRef option_arg,
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ExecutionContext *execution_context) override;
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void OptionParsingStarting(ExecutionContext *execution_context) override;
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llvm::ArrayRef<OptionDefinition> GetDefinitions() override;
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size_t m_trace_buffer_size;
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size_t m_process_buffer_size_limit;
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bool m_enable_tsc;
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llvm::Optional<size_t> m_psb_period;
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bool m_per_core_tracing;
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};
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CommandObjectProcessTraceStartIntelPT(TraceIntelPT &trace,
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CommandInterpreter &interpreter)
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: CommandObjectParsed(
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interpreter, "process trace start",
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"Start tracing this process with intel-pt, including future "
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"threads. If --per-core-tracing is not provided, this traces each "
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"thread independently, thus using a trace buffer per thread. "
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"Threads traced with the \"thread trace start\" command are left "
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"unaffected ant not retraced. This is the recommended option "
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"unless the number of threads is huge. If --per-core-tracing is "
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"passed, each cpu core is traced instead of each thread, which "
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"uses a fixed number of trace buffers, but might result in less "
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"data available for less frequent threads.",
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"process trace start [<intel-pt-options>]",
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lldb::eCommandRequiresProcess | lldb::eCommandTryTargetAPILock |
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lldb::eCommandProcessMustBeLaunched |
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lldb::eCommandProcessMustBePaused),
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m_trace(trace), m_options() {}
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Options *GetOptions() override { return &m_options; }
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protected:
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bool DoExecute(Args &command, CommandReturnObject &result) override;
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TraceIntelPT &m_trace;
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CommandOptions m_options;
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};
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} // namespace trace_intel_pt
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} // namespace lldb_private
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#endif // LLDB_SOURCE_PLUGINS_TRACE_INTEL_PT_COMMANDOBJECTTRACESTARTINTELPT_H
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