1 // Copyright 2019 The Chromium Authors
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include "base/trace_event/log_message.h"
6
7 #include <stdint.h>
8
9 #include <string>
10
11 #include "base/json/string_escape.h"
12 #include "base/notreached.h"
13 #include "base/strings/stringprintf.h"
14
15 namespace base {
16 namespace trace_event {
17
LogMessage(const char * file,base::StringPiece message,int line)18 LogMessage::LogMessage(const char* file, base::StringPiece message, int line)
19 : file_(file), message_(message), line_number_(line) {}
20
21 LogMessage::~LogMessage() = default;
22
AppendAsTraceFormat(std::string * out) const23 void LogMessage::AppendAsTraceFormat(std::string* out) const {
24 out->append("{");
25 out->append(base::StringPrintf("\"line\":\"%d\",", line_number_));
26 out->append("\"message\":");
27 base::EscapeJSONString(message_, true, out);
28 out->append(",");
29 out->append(base::StringPrintf("\"file\":\"%s\"", file_));
30 out->append("}");
31 }
32
EstimateTraceMemoryOverhead(TraceEventMemoryOverhead * overhead)33 void LogMessage::EstimateTraceMemoryOverhead(
34 TraceEventMemoryOverhead* overhead) {
35 overhead->Add(TraceEventMemoryOverhead::kOther, sizeof(*this));
36 overhead->AddString(message_);
37 }
38
AppendToProto(ProtoAppender * appender) const39 bool LogMessage::AppendToProto(ProtoAppender* appender) const {
40 // LogMessage is handled in a special way in
41 // track_event_thread_local_event_sink.cc in the function |AddTraceEvent|, so
42 // this call should never happen.
43 NOTREACHED();
44 return false;
45 }
46
47 } // namespace trace_event
48 } // namespace base
49