602497d672
added new command "process trace save -d <directory>". -it saves a JSON file as <directory>/trace.json, with the main properties of the trace session. -it saves binary Intel-pt trace as <directory>/thread_id.trace; each file saves each thread. -it saves modules to the directory <directory>/modules . -it only works for live process and it only support Intel-pt right now. Example: ``` b main run process trace start n process trace save -d /tmp/mytrace ``` A file named trace.json and xxx.trace should be generated in /tmp/mytrace. To load the trace that was just saved: ``` trace load /tmp/mytrace thread trace dump instructions ``` You should see the instructions of the trace got printed. To run a test: ``` cd ~/llvm-sand/build/Release/fbcode-x86_64/toolchain ninja lldb-dotest ./bin/lldb-dotest -p TestTraceSave ``` Reviewed By: wallace Differential Revision: https://reviews.llvm.org/D107669
76 lines
2.1 KiB
C++
76 lines
2.1 KiB
C++
//===-- TraceIntelPTJSONStructs.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_TRACEINTELPTJSONSTRUCTS_H
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#define LLDB_SOURCE_PLUGINS_TRACE_INTEL_PT_TRACEINTELPTJSONSTRUCTS_H
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#include "../common/TraceJSONStructs.h"
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#include <intel-pt.h>
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namespace lldb_private {
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namespace trace_intel_pt {
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struct JSONTraceIntelPTCPUInfo {
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JSONTraceIntelPTCPUInfo() = default;
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JSONTraceIntelPTCPUInfo(pt_cpu cpu_info) {
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family = static_cast<int64_t>(cpu_info.family);
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model = static_cast<int64_t>(cpu_info.model);
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stepping = static_cast<int64_t>(cpu_info.stepping);
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vendor = cpu_info.vendor == pcv_intel ? "intel" : "Unknown";
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}
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int64_t family;
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int64_t model;
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int64_t stepping;
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std::string vendor;
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};
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struct JSONTraceIntelPTTrace {
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std::string type;
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JSONTraceIntelPTCPUInfo cpuInfo;
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};
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struct JSONTraceIntelPTSession {
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JSONTraceIntelPTTrace ipt_trace;
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JSONTraceSessionBase session_base;
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};
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struct JSONTraceIntelPTSettings : JSONTracePluginSettings {
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JSONTraceIntelPTCPUInfo cpuInfo;
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};
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} // namespace trace_intel_pt
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} // namespace lldb_private
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namespace llvm {
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namespace json {
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bool fromJSON(
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const Value &value,
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lldb_private::trace_intel_pt::JSONTraceIntelPTSettings &plugin_settings,
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Path path);
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bool fromJSON(const llvm::json::Value &value,
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lldb_private::trace_intel_pt::JSONTraceIntelPTCPUInfo &packet,
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llvm::json::Path path);
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llvm::json::Value
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toJSON(const lldb_private::trace_intel_pt::JSONTraceIntelPTCPUInfo &cpu_info);
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llvm::json::Value
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toJSON(const lldb_private::trace_intel_pt::JSONTraceIntelPTTrace &trace);
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llvm::json::Value
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toJSON(const lldb_private::trace_intel_pt::JSONTraceIntelPTSession &session);
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} // namespace json
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} // namespace llvm
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#endif // LLDB_SOURCE_PLUGINS_TRACE_INTEL_PT_TRACEINTELPTJSONSTRUCTS_H
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