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/Target/Process.h"
14 #include "lldb/Target/Trace.h"
15 
16 using namespace lldb;
17 using namespace lldb_private;
18 using namespace lldb_private::ctf;
19 using namespace llvm;
20 
21 // CommandObjectThreadTraceExportCTF
22 
23 #define LLDB_OPTIONS_thread_trace_export_ctf
24 #include "TraceExporterCTFCommandOptions.inc"
25 
26 Status CommandObjectThreadTraceExportCTF::CommandOptions::SetOptionValue(
27     uint32_t option_idx, llvm::StringRef option_arg,
28     ExecutionContext *execution_context) {
29   Status error;
30   const int short_option = m_getopt_table[option_idx].val;
31 
32   switch (short_option) {
33   case 'f': {
34     m_file.assign(std::string(option_arg));
35     break;
36   }
37   case 't': {
38     int64_t thread_index;
39     if (option_arg.empty() || option_arg.getAsInteger(0, thread_index) ||
40         thread_index < 0)
41       error.SetErrorStringWithFormat("invalid integer value for option '%s'",
42                                      option_arg.str().c_str());
43     else
44       m_thread_index = thread_index;
45     break;
46   }
47   default:
48     llvm_unreachable("Unimplemented option");
49   }
50   return error;
51 }
52 
53 void CommandObjectThreadTraceExportCTF::CommandOptions::OptionParsingStarting(
54     ExecutionContext *execution_context) {
55   m_file.clear();
56   m_thread_index = None;
57 }
58 
59 llvm::ArrayRef<OptionDefinition>
60 CommandObjectThreadTraceExportCTF::CommandOptions::GetDefinitions() {
61   return llvm::makeArrayRef(g_thread_trace_export_ctf_options);
62 }
63 
64 bool CommandObjectThreadTraceExportCTF::DoExecute(Args &command,
65                                                   CommandReturnObject &result) {
66   const TraceSP &trace_sp = m_exe_ctx.GetTargetSP()->GetTrace();
67   Process *process = m_exe_ctx.GetProcessPtr();
68   Thread *thread = m_options.m_thread_index
69                        ? process->GetThreadList()
70                              .FindThreadByIndexID(*m_options.m_thread_index)
71                              .get()
72                        : GetDefaultThread();
73 
74   if (thread == nullptr) {
75     const uint32_t num_threads = process->GetThreadList().GetSize();
76     size_t tid = m_options.m_thread_index ? *m_options.m_thread_index
77                                           : 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     TraceHTR htr(*thread, *trace_sp->GetCursor(*thread));
84     htr.ExecutePasses();
85     if (llvm::Error err = htr.Export(m_options.m_file)) {
86       result.AppendErrorWithFormat("%s\n", toString(std::move(err)).c_str());
87       return false;
88     } else {
89       return true;
90     }
91   }
92 }
93