blob: 6f2ccb5d481a39790717bdff1e2699a506832729 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
|
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CONTENT_BROWSER_TRACING_TRACE_CONTROLLER_IMPL_H_
#define CONTENT_BROWSER_TRACING_TRACE_CONTROLLER_IMPL_H_
#include <set>
#include <string>
#include <vector>
#include "base/debug/trace_event.h"
#include "base/lazy_instance.h"
#include "content/public/browser/trace_controller.h"
class CommandLine;
namespace content {
class TraceMessageFilter;
class TraceControllerImpl : public TraceController {
public:
static TraceControllerImpl* GetInstance();
// Called on the main thread of the browser process to initialize
// startup tracing.
void InitStartupTracing(const CommandLine& command_line);
// TraceController implementation:
virtual bool BeginTracing(TraceSubscriber* subscriber,
const std::string& category_patterns,
base::debug::TraceLog::Options options) OVERRIDE;
virtual bool EndTracingAsync(TraceSubscriber* subscriber) OVERRIDE;
virtual bool GetTraceBufferPercentFullAsync(
TraceSubscriber* subscriber) OVERRIDE;
virtual bool SetWatchEvent(TraceSubscriber* subscriber,
const std::string& category_name,
const std::string& event_name) OVERRIDE;
virtual bool CancelWatchEvent(TraceSubscriber* subscriber) OVERRIDE;
virtual void CancelSubscriber(TraceSubscriber* subscriber) OVERRIDE;
virtual bool GetKnownCategoryGroupsAsync(TraceSubscriber* subscriber)
OVERRIDE;
private:
typedef std::set<scoped_refptr<TraceMessageFilter> > FilterMap;
friend struct base::DefaultLazyInstanceTraits<TraceControllerImpl>;
friend class TraceMessageFilter;
TraceControllerImpl();
virtual ~TraceControllerImpl();
bool is_tracing_enabled() const {
return can_end_tracing();
}
bool can_end_tracing() const {
return is_tracing_ && pending_end_ack_count_ == 0;
}
// Can get Buffer Percent Full
bool can_get_buffer_percent_full() const {
return is_tracing_ &&
pending_end_ack_count_ == 0 &&
pending_bpf_ack_count_ == 0;
}
bool can_begin_tracing(TraceSubscriber* subscriber) const {
return !is_tracing_ &&
(subscriber_ == NULL || subscriber == subscriber_);
}
// Methods for use by TraceMessageFilter.
void AddFilter(TraceMessageFilter* filter);
void RemoveFilter(TraceMessageFilter* filter);
void OnTracingBegan(TraceSubscriber* subscriber);
void OnEndTracingAck(const std::vector<std::string>& known_category_groups);
void OnTraceDataCollected(
const scoped_refptr<base::RefCountedString>& events_str_ptr);
void OnTraceNotification(int notification);
void OnTraceBufferPercentFullReply(float percent_full);
// Callback of TraceLog::Flush() for the local trace.
void OnLocalTraceDataCollected(
const scoped_refptr<base::RefCountedString>& events_str_ptr,
bool has_more_events);
FilterMap filters_;
TraceSubscriber* subscriber_;
// Pending acks for EndTracingAsync:
int pending_end_ack_count_;
// Pending acks for GetTraceBufferPercentFullAsync:
int pending_bpf_ack_count_;
float maximum_bpf_;
bool is_tracing_;
bool is_get_category_groups_;
std::set<std::string> known_category_groups_;
std::string watch_category_;
std::string watch_name_;
base::debug::TraceLog::Options trace_options_;
base::debug::CategoryFilter category_filter_;
DISALLOW_COPY_AND_ASSIGN(TraceControllerImpl);
};
} // namespace content
#endif // CONTENT_BROWSER_TRACING_TRACE_CONTROLLER_IMPL_H_
|
