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1 // Copyright 2016 the V8 project authors. All rights reserved. | 1 // Copyright 2016 the V8 project authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "src/libplatform/tracing/trace-writer.h" | 5 #include "src/libplatform/tracing/trace-writer.h" |
6 | 6 |
7 #include <cmath> | 7 #include <cmath> |
8 | 8 |
9 #include "base/trace_event/common/trace_event_common.h" | 9 #include "base/trace_event/common/trace_event_common.h" |
| 10 #include "include/v8-platform.h" |
10 #include "src/base/platform/platform.h" | 11 #include "src/base/platform/platform.h" |
11 | 12 |
12 namespace v8 { | 13 namespace v8 { |
13 namespace platform { | 14 namespace platform { |
14 namespace tracing { | 15 namespace tracing { |
15 | 16 |
16 // Writes the given string to a stream, taking care to escape characters | 17 // Writes the given string to a stream, taking care to escape characters |
17 // when necessary. | 18 // when necessary. |
18 V8_INLINE static void WriteJSONStringToStream(const char* str, | 19 V8_INLINE static void WriteJSONStringToStream(const char* str, |
19 std::ostream& stream) { | 20 std::ostream& stream) { |
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105 } else { | 106 } else { |
106 WriteJSONStringToStream(value.as_string, stream_); | 107 WriteJSONStringToStream(value.as_string, stream_); |
107 } | 108 } |
108 break; | 109 break; |
109 default: | 110 default: |
110 UNREACHABLE(); | 111 UNREACHABLE(); |
111 break; | 112 break; |
112 } | 113 } |
113 } | 114 } |
114 | 115 |
| 116 void JSONTraceWriter::AppendArgValue(ConvertableToTraceFormat* value) { |
| 117 std::string arg_stringified; |
| 118 value->AppendAsTraceFormat(&arg_stringified); |
| 119 stream_ << arg_stringified; |
| 120 } |
| 121 |
115 JSONTraceWriter::JSONTraceWriter(std::ostream& stream) : stream_(stream) { | 122 JSONTraceWriter::JSONTraceWriter(std::ostream& stream) : stream_(stream) { |
116 stream_ << "{\"traceEvents\":["; | 123 stream_ << "{\"traceEvents\":["; |
117 } | 124 } |
118 | 125 |
119 JSONTraceWriter::~JSONTraceWriter() { stream_ << "]}"; } | 126 JSONTraceWriter::~JSONTraceWriter() { stream_ << "]}"; } |
120 | 127 |
121 void JSONTraceWriter::AppendTraceEvent(TraceObject* trace_event) { | 128 void JSONTraceWriter::AppendTraceEvent(TraceObject* trace_event) { |
122 if (append_comma_) stream_ << ","; | 129 if (append_comma_) stream_ << ","; |
123 append_comma_ = true; | 130 append_comma_ = true; |
124 stream_ << "{\"pid\":" << trace_event->pid() | 131 stream_ << "{\"pid\":" << trace_event->pid() |
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136 stream_ << ",\"scope\":\"" << trace_event->scope() << "\""; | 143 stream_ << ",\"scope\":\"" << trace_event->scope() << "\""; |
137 } | 144 } |
138 // So as not to lose bits from a 64-bit integer, output as a hex string. | 145 // So as not to lose bits from a 64-bit integer, output as a hex string. |
139 stream_ << ",\"id\":\"0x" << std::hex << trace_event->id() << "\"" | 146 stream_ << ",\"id\":\"0x" << std::hex << trace_event->id() << "\"" |
140 << std::dec; | 147 << std::dec; |
141 } | 148 } |
142 stream_ << ",\"args\":{"; | 149 stream_ << ",\"args\":{"; |
143 const char** arg_names = trace_event->arg_names(); | 150 const char** arg_names = trace_event->arg_names(); |
144 const uint8_t* arg_types = trace_event->arg_types(); | 151 const uint8_t* arg_types = trace_event->arg_types(); |
145 TraceObject::ArgValue* arg_values = trace_event->arg_values(); | 152 TraceObject::ArgValue* arg_values = trace_event->arg_values(); |
| 153 std::unique_ptr<v8::ConvertableToTraceFormat>* arg_convertables = |
| 154 trace_event->arg_convertables(); |
146 for (int i = 0; i < trace_event->num_args(); ++i) { | 155 for (int i = 0; i < trace_event->num_args(); ++i) { |
147 if (i > 0) stream_ << ","; | 156 if (i > 0) stream_ << ","; |
148 stream_ << "\"" << arg_names[i] << "\":"; | 157 stream_ << "\"" << arg_names[i] << "\":"; |
149 AppendArgValue(arg_types[i], arg_values[i]); | 158 if (arg_types[i] == TRACE_VALUE_TYPE_CONVERTABLE) { |
| 159 AppendArgValue(arg_convertables[i].get()); |
| 160 } else { |
| 161 AppendArgValue(arg_types[i], arg_values[i]); |
| 162 } |
150 } | 163 } |
151 stream_ << "}}"; | 164 stream_ << "}}"; |
152 // TODO(fmeawad): Add support for Flow Events. | 165 // TODO(fmeawad): Add support for Flow Events. |
153 } | 166 } |
154 | 167 |
155 void JSONTraceWriter::Flush() {} | 168 void JSONTraceWriter::Flush() {} |
156 | 169 |
157 TraceWriter* TraceWriter::CreateJSONTraceWriter(std::ostream& stream) { | 170 TraceWriter* TraceWriter::CreateJSONTraceWriter(std::ostream& stream) { |
158 return new JSONTraceWriter(stream); | 171 return new JSONTraceWriter(stream); |
159 } | 172 } |
160 | 173 |
161 } // namespace tracing | 174 } // namespace tracing |
162 } // namespace platform | 175 } // namespace platform |
163 } // namespace v8 | 176 } // namespace v8 |
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