net/base/trace_net_log_observer.cc - Issue 992733002: Remove //net (except for Android test stuff) and sdch

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Issue 992733002: Remove //net (except for Android test stuff) and sdch (Closed) Base URL: git@github.com:domokit/mojo.git@master

Patch Set: Created 5 years, 9 months ago

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1 // Copyright 2014 The Chromium Authors. All rights reserved.

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 "net/base/trace_net_log_observer.h"

6

7 #include <stdio.h>

8

9 #include <string>

10

11 #include "base/json/json_writer.h"

12 #include "base/logging.h"

13 #include "base/memory/scoped_ptr.h"

14 #include "base/trace_event/trace_event.h"

15 #include "base/values.h"

16 #include "net/base/net_log.h"

17

18 namespace net {

19

20 namespace {

21

22 // TraceLog category for NetLog events.

23 const char kNetLogTracingCategory[] = TRACE_DISABLED_BY_DEFAULT("netlog");

24

25 class TracedValue : public base::trace_event::ConvertableToTraceFormat {

26 public:

27 explicit TracedValue(scoped_ptr<base::Value> value) : value_(value.Pass()) {}

28

29 private:

30 ~TracedValue() override {}

31

32 void AppendAsTraceFormat(std::string* out) const override {

33 if (value_) {

34 std::string tmp;

35 base::JSONWriter::Write(value_.get(), &tmp);

36 *out += tmp;

37 } else {

38 *out += "\"\"";

39 }

40 }

41

42 private:

43 scoped_ptr<base::Value> value_;

44 };

45

46 } // namespace

47

48 TraceNetLogObserver::TraceNetLogObserver() : net_log_to_watch_(NULL) {

49 }

50

51 TraceNetLogObserver::~TraceNetLogObserver() {

52 DCHECK(!net_log_to_watch_);

53 DCHECK(!net_log());

54 }

55

56 void TraceNetLogObserver::OnAddEntry(const NetLog::Entry& entry) {

57 scoped_ptr<base::Value> params(entry.ParametersToValue());

58 switch (entry.phase()) {

59 case NetLog::PHASE_BEGIN:

60 TRACE_EVENT_NESTABLE_ASYNC_BEGIN2(

61 kNetLogTracingCategory, NetLog::EventTypeToString(entry.type()),

62 entry.source().id, "source_type",

63 NetLog::SourceTypeToString(entry.source().type), "params",

64 scoped_refptr<base::trace_event::ConvertableToTraceFormat>(

65 new TracedValue(params.Pass())));

66 break;

67 case NetLog::PHASE_END:

68 TRACE_EVENT_NESTABLE_ASYNC_END2(

69 kNetLogTracingCategory, NetLog::EventTypeToString(entry.type()),

70 entry.source().id, "source_type",

71 NetLog::SourceTypeToString(entry.source().type), "params",

72 scoped_refptr<base::trace_event::ConvertableToTraceFormat>(

73 new TracedValue(params.Pass())));

74 break;

75 case NetLog::PHASE_NONE:

76 TRACE_EVENT_NESTABLE_ASYNC_INSTANT2(

77 kNetLogTracingCategory, NetLog::EventTypeToString(entry.type()),

78 entry.source().id, "source_type",

79 NetLog::SourceTypeToString(entry.source().type), "params",

80 scoped_refptr<base::trace_event::ConvertableToTraceFormat>(

81 new TracedValue(params.Pass())));

82 break;

83 }

84 }

85

86 void TraceNetLogObserver::WatchForTraceStart(NetLog* netlog) {

87 DCHECK(!net_log_to_watch_);

88 DCHECK(!net_log());

89 net_log_to_watch_ = netlog;

90 base::trace_event::TraceLog::GetInstance()->AddEnabledStateObserver(this);

91 }

92

93 void TraceNetLogObserver::StopWatchForTraceStart() {

94 // Should only stop if is currently watching.

95 DCHECK(net_log_to_watch_);

96 base::trace_event::TraceLog::GetInstance()->RemoveEnabledStateObserver(this);

97 if (net_log())

98 net_log()->RemoveThreadSafeObserver(this);

99 net_log_to_watch_ = NULL;

100 }

101

102 void TraceNetLogObserver::OnTraceLogEnabled() {

103 net_log_to_watch_->AddThreadSafeObserver(this,

104 NetLog::LOG_STRIP_PRIVATE_DATA);

105 }

106

107 void TraceNetLogObserver::OnTraceLogDisabled() {

108 if (net_log())

109 net_log()->RemoveThreadSafeObserver(this);

110 }

111

112 } // namespace net

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