1 //===-- CommandObjectThreadTraceExportCTF.cpp -----------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8
9 #include "CommandObjectThreadTraceExportCTF.h"
10
11 #include "../common/TraceHTR.h"
12 #include "lldb/Host/OptionParser.h"
13 #include "lldb/Interpreter/CommandOptionArgumentTable.h"
14 #include "lldb/Target/Process.h"
15 #include "lldb/Target/Trace.h"
16
17 using namespace lldb;
18 using namespace lldb_private;
19 using namespace lldb_private::ctf;
20 using namespace llvm;
21
22 // CommandObjectThreadTraceExportCTF
23
24 #define LLDB_OPTIONS_thread_trace_export_ctf
25 #include "TraceExporterCTFCommandOptions.inc"
26
SetOptionValue(uint32_t option_idx,llvm::StringRef option_arg,ExecutionContext * execution_context)27 Status CommandObjectThreadTraceExportCTF::CommandOptions::SetOptionValue(
28 uint32_t option_idx, llvm::StringRef option_arg,
29 ExecutionContext *execution_context) {
30 Status error;
31 const int short_option = m_getopt_table[option_idx].val;
32
33 switch (short_option) {
34 case 'f': {
35 m_file.assign(std::string(option_arg));
36 break;
37 }
38 case 't': {
39 int64_t thread_index;
40 if (option_arg.empty() || option_arg.getAsInteger(0, thread_index) ||
41 thread_index < 0)
42 error.SetErrorStringWithFormat("invalid integer value for option '%s'",
43 option_arg.str().c_str());
44 else
45 m_thread_index = thread_index;
46 break;
47 }
48 default:
49 llvm_unreachable("Unimplemented option");
50 }
51 return error;
52 }
53
OptionParsingStarting(ExecutionContext * execution_context)54 void CommandObjectThreadTraceExportCTF::CommandOptions::OptionParsingStarting(
55 ExecutionContext *execution_context) {
56 m_file.clear();
57 m_thread_index = std::nullopt;
58 }
59
60 llvm::ArrayRef<OptionDefinition>
GetDefinitions()61 CommandObjectThreadTraceExportCTF::CommandOptions::GetDefinitions() {
62 return llvm::ArrayRef(g_thread_trace_export_ctf_options);
63 }
64
DoExecute(Args & command,CommandReturnObject & result)65 bool CommandObjectThreadTraceExportCTF::DoExecute(Args &command,
66 CommandReturnObject &result) {
67 const TraceSP &trace_sp = m_exe_ctx.GetTargetSP()->GetTrace();
68 Process *process = m_exe_ctx.GetProcessPtr();
69 Thread *thread = m_options.m_thread_index
70 ? process->GetThreadList()
71 .FindThreadByIndexID(*m_options.m_thread_index)
72 .get()
73 : GetDefaultThread();
74
75 if (thread == nullptr) {
76 const uint32_t num_threads = process->GetThreadList().GetSize();
77 size_t tid = m_options.m_thread_index.value_or(LLDB_INVALID_THREAD_ID);
78 result.AppendErrorWithFormatv(
79 "Thread index {0} is out of range (valid values are 1 - {1}).\n", tid,
80 num_threads);
81 return false;
82 } else {
83 auto do_work = [&]() -> Error {
84 Expected<TraceCursorSP> cursor = trace_sp->CreateNewCursor(*thread);
85 if (!cursor)
86 return cursor.takeError();
87 TraceHTR htr(*thread, **cursor);
88 htr.ExecutePasses();
89 return htr.Export(m_options.m_file);
90 };
91
92 if (llvm::Error err = do_work()) {
93 result.AppendErrorWithFormat("%s\n", toString(std::move(err)).c_str());
94 return false;
95 } else {
96 return true;
97 }
98 }
99 }
100