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 #include <string_view>
11
12 #include "base/json/string_escape.h"
13 #include "base/notreached.h"
14 #include "base/strings/stringprintf.h"
15
16 namespace base {
17 namespace trace_event {
18
LogMessage(const char * file,std::string_view message,int line)19 LogMessage::LogMessage(const char* file, std::string_view message, int line)
20 : file_(file), message_(message), line_number_(line) {}
21
22 LogMessage::~LogMessage() = default;
23
AppendAsTraceFormat(std::string * out) const24 void LogMessage::AppendAsTraceFormat(std::string* out) const {
25 out->append("{");
26 out->append(base::StringPrintf("\"line\":\"%d\",", line_number_));
27 out->append("\"message\":");
28 base::EscapeJSONString(message_, true, out);
29 out->append(",");
30 out->append(base::StringPrintf("\"file\":\"%s\"", file_));
31 out->append("}");
32 }
33
EstimateTraceMemoryOverhead(TraceEventMemoryOverhead * overhead)34 void LogMessage::EstimateTraceMemoryOverhead(
35 TraceEventMemoryOverhead* overhead) {
36 overhead->Add(TraceEventMemoryOverhead::kOther, sizeof(*this));
37 overhead->AddString(message_);
38 }
39
AppendToProto(ProtoAppender * appender) const40 bool LogMessage::AppendToProto(ProtoAppender* appender) const {
41 // LogMessage is handled in a special way in
42 // track_event_thread_local_event_sink.cc in the function |AddTraceEvent|, so
43 // this call should never happen.
44 NOTREACHED();
45 return false;
46 }
47
48 } // namespace trace_event
49 } // namespace base
50