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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium 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 "base/trace_event/trace_event_impl.h" | 5 #include "base/trace_event/trace_event_impl.h" |
6 | 6 |
7 #include <fcntl.h> | 7 #include <fcntl.h> |
8 | 8 |
9 #include "base/format_macros.h" | 9 #include "base/format_macros.h" |
10 #include "base/logging.h" | 10 #include "base/logging.h" |
11 #include "base/strings/stringprintf.h" | 11 #include "base/strings/stringprintf.h" |
12 #include "base/synchronization/waitable_event.h" | 12 #include "base/synchronization/waitable_event.h" |
13 #include "base/trace_event/trace_event.h" | 13 #include "base/trace_event/trace_event.h" |
14 | 14 |
| 15 namespace base { |
| 16 namespace trace_event { |
| 17 |
15 namespace { | 18 namespace { |
16 | 19 |
17 int g_atrace_fd = -1; | 20 int g_atrace_fd = -1; |
18 const char kATraceMarkerFile[] = "/sys/kernel/debug/tracing/trace_marker"; | 21 const char kATraceMarkerFile[] = "/sys/kernel/debug/tracing/trace_marker"; |
19 | 22 |
20 void WriteEvent( | 23 void WriteEvent( |
21 char phase, | 24 char phase, |
22 const char* category_group, | 25 const char* category_group, |
23 const char* name, | 26 const char* name, |
24 unsigned long long id, | 27 unsigned long long id, |
25 const char** arg_names, | 28 const char** arg_names, |
26 const unsigned char* arg_types, | 29 const unsigned char* arg_types, |
27 const base::trace_event::TraceEvent::TraceValue* arg_values, | 30 const TraceEvent::TraceValue* arg_values, |
28 const scoped_refptr<base::trace_event::ConvertableToTraceFormat>* | 31 const scoped_refptr<ConvertableToTraceFormat>* convertable_values, |
29 convertable_values, | 32 unsigned int flags) { |
30 unsigned char flags) { | 33 std::string out = StringPrintf("%c|%d|%s", phase, getpid(), name); |
31 std::string out = base::StringPrintf("%c|%d|%s", phase, getpid(), name); | |
32 if (flags & TRACE_EVENT_FLAG_HAS_ID) | 34 if (flags & TRACE_EVENT_FLAG_HAS_ID) |
33 base::StringAppendF(&out, "-%" PRIx64, static_cast<uint64>(id)); | 35 StringAppendF(&out, "-%" PRIx64, static_cast<uint64>(id)); |
34 out += '|'; | 36 out += '|'; |
35 | 37 |
36 for (int i = 0; i < base::trace_event::kTraceMaxNumArgs && arg_names[i]; | 38 for (int i = 0; i < kTraceMaxNumArgs && arg_names[i]; ++i) { |
37 ++i) { | |
38 if (i) | 39 if (i) |
39 out += ';'; | 40 out += ';'; |
40 out += arg_names[i]; | 41 out += arg_names[i]; |
41 out += '='; | 42 out += '='; |
42 std::string::size_type value_start = out.length(); | 43 std::string::size_type value_start = out.length(); |
43 if (arg_types[i] == TRACE_VALUE_TYPE_CONVERTABLE) { | 44 if (arg_types[i] == TRACE_VALUE_TYPE_CONVERTABLE) |
44 convertable_values[i]->AppendAsTraceFormat(&out); | 45 convertable_values[i]->AppendAsTraceFormat(&out); |
45 } else { | 46 else |
46 base::trace_event::TraceEvent::AppendValueAsJSON(arg_types[i], | 47 TraceEvent::AppendValueAsJSON(arg_types[i], arg_values[i], &out); |
47 arg_values[i], &out); | 48 |
48 } | |
49 // Remove the quotes which may confuse the atrace script. | 49 // Remove the quotes which may confuse the atrace script. |
50 ReplaceSubstringsAfterOffset(&out, value_start, "\\\"", "'"); | 50 ReplaceSubstringsAfterOffset(&out, value_start, "\\\"", "'"); |
51 ReplaceSubstringsAfterOffset(&out, value_start, "\"", ""); | 51 ReplaceSubstringsAfterOffset(&out, value_start, "\"", ""); |
52 // Replace chars used for separators with similar chars in the value. | 52 // Replace chars used for separators with similar chars in the value. |
53 std::replace(out.begin() + value_start, out.end(), ';', ','); | 53 std::replace(out.begin() + value_start, out.end(), ';', ','); |
54 std::replace(out.begin() + value_start, out.end(), '|', '!'); | 54 std::replace(out.begin() + value_start, out.end(), '|', '!'); |
55 } | 55 } |
56 | 56 |
57 out += '|'; | 57 out += '|'; |
58 out += category_group; | 58 out += category_group; |
59 write(g_atrace_fd, out.c_str(), out.size()); | 59 write(g_atrace_fd, out.c_str(), out.size()); |
60 } | 60 } |
61 | 61 |
62 void NoOpOutputCallback(base::WaitableEvent* complete_event, | 62 void NoOpOutputCallback(WaitableEvent* complete_event, |
63 const scoped_refptr<base::RefCountedString>&, | 63 const scoped_refptr<RefCountedString>&, |
64 bool has_more_events) { | 64 bool has_more_events) { |
65 if (!has_more_events) | 65 if (!has_more_events) |
66 complete_event->Signal(); | 66 complete_event->Signal(); |
67 } | 67 } |
68 | 68 |
69 void EndChromeTracing(base::trace_event::TraceLog* trace_log, | 69 void EndChromeTracing(TraceLog* trace_log, WaitableEvent* complete_event) { |
70 base::WaitableEvent* complete_event) { | |
71 trace_log->SetDisabled(); | 70 trace_log->SetDisabled(); |
72 // Delete the buffered trace events as they have been sent to atrace. | 71 // Delete the buffered trace events as they have been sent to atrace. |
73 trace_log->Flush(base::Bind(&NoOpOutputCallback, complete_event)); | 72 trace_log->Flush(Bind(&NoOpOutputCallback, complete_event)); |
74 } | 73 } |
75 | 74 |
76 } // namespace | 75 } // namespace |
77 | 76 |
78 namespace base { | |
79 namespace trace_event { | |
80 | |
81 // These functions support Android systrace.py when 'webview' category is | 77 // These functions support Android systrace.py when 'webview' category is |
82 // traced. With the new adb_profile_chrome, we may have two phases: | 78 // traced. With the new adb_profile_chrome, we may have two phases: |
83 // - before WebView is ready for combined tracing, we can use adb_profile_chrome | 79 // - before WebView is ready for combined tracing, we can use adb_profile_chrome |
84 // to trace android categories other than 'webview' and chromium categories. | 80 // to trace android categories other than 'webview' and chromium categories. |
85 // In this way we can avoid the conflict between StartATrace/StopATrace and | 81 // In this way we can avoid the conflict between StartATrace/StopATrace and |
86 // the intents. | 82 // the intents. |
87 // - TODO(wangxianzhu): after WebView is ready for combined tracing, remove | 83 // - TODO(wangxianzhu): after WebView is ready for combined tracing, remove |
88 // StartATrace, StopATrace and SendToATrace, and perhaps send Java traces | 84 // StartATrace, StopATrace and SendToATrace, and perhaps send Java traces |
89 // directly to atrace in trace_event_binding.cc. | 85 // directly to atrace in trace_event_binding.cc. |
90 | 86 |
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190 double now_in_seconds = (TraceTicks::Now() - TraceTicks()).InSecondsF(); | 186 double now_in_seconds = (TraceTicks::Now() - TraceTicks()).InSecondsF(); |
191 std::string marker = StringPrintf( | 187 std::string marker = StringPrintf( |
192 "trace_event_clock_sync: parent_ts=%f\n", now_in_seconds); | 188 "trace_event_clock_sync: parent_ts=%f\n", now_in_seconds); |
193 if (write(atrace_fd, marker.c_str(), marker.size()) == -1) | 189 if (write(atrace_fd, marker.c_str(), marker.size()) == -1) |
194 PLOG(WARNING) << "Couldn't write to " << kATraceMarkerFile; | 190 PLOG(WARNING) << "Couldn't write to " << kATraceMarkerFile; |
195 close(atrace_fd); | 191 close(atrace_fd); |
196 } | 192 } |
197 | 193 |
198 } // namespace trace_event | 194 } // namespace trace_event |
199 } // namespace base | 195 } // namespace base |
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