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Side by Side Diff: base/test/trace_event_analyzer.h

Issue 868603007: Mechanical rename of base::debug -> base::trace_event [final pass]. (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@move_trace_part3_1
Patch Set: Removing build/sanitizers/tsan_suppressions.cc Created 5 years, 10 months ago
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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 // Use trace_analyzer::Query and trace_analyzer::TraceAnalyzer to search for 5 // Use trace_analyzer::Query and trace_analyzer::TraceAnalyzer to search for
6 // specific trace events that were generated by the trace_event.h API. 6 // specific trace events that were generated by the trace_event.h API.
7 // 7 //
8 // Basic procedure: 8 // Basic procedure:
9 // - Get trace events JSON string from base::debug::TraceLog. 9 // - Get trace events JSON string from base::trace_event::TraceLog.
10 // - Create TraceAnalyzer with JSON string. 10 // - Create TraceAnalyzer with JSON string.
11 // - Call TraceAnalyzer::AssociateBeginEndEvents (optional). 11 // - Call TraceAnalyzer::AssociateBeginEndEvents (optional).
12 // - Call TraceAnalyzer::AssociateEvents (zero or more times). 12 // - Call TraceAnalyzer::AssociateEvents (zero or more times).
13 // - Call TraceAnalyzer::FindEvents with queries to find specific events. 13 // - Call TraceAnalyzer::FindEvents with queries to find specific events.
14 // 14 //
15 // A Query is a boolean expression tree that evaluates to true or false for a 15 // A Query is a boolean expression tree that evaluates to true or false for a
16 // given trace event. Queries can be combined into a tree using boolean, 16 // given trace event. Queries can be combined into a tree using boolean,
17 // arithmetic and comparison operators that refer to data of an individual trace 17 // arithmetic and comparison operators that refer to data of an individual trace
18 // event. 18 // event.
19 // 19 //
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65 // Query(EVENT_HAS_OTHER)); 65 // Query(EVENT_HAS_OTHER));
66 // analyzer.FindEvents(q, &events); 66 // analyzer.FindEvents(q, &events);
67 // 67 //
68 // Step 4: analyze events, such as checking durations. 68 // Step 4: analyze events, such as checking durations.
69 // for (size_t i = 0; i < events.size(); ++i) { 69 // for (size_t i = 0; i < events.size(); ++i) {
70 // double duration; 70 // double duration;
71 // EXPECT_TRUE(events[i].GetAbsTimeToOtherEvent(&duration)); 71 // EXPECT_TRUE(events[i].GetAbsTimeToOtherEvent(&duration));
72 // EXPECT_LT(duration, 1000000.0/60.0); // expect less than 1/60 second. 72 // EXPECT_LT(duration, 1000000.0/60.0); // expect less than 1/60 second.
73 // } 73 // }
74 74
75
Primiano Tucci (use gerrit) 2015/02/09 12:17:45 Nit: You accidentally ate this line.
76 #ifndef BASE_TEST_TRACE_EVENT_ANALYZER_H_ 75 #ifndef BASE_TEST_TRACE_EVENT_ANALYZER_H_
77 #define BASE_TEST_TRACE_EVENT_ANALYZER_H_ 76 #define BASE_TEST_TRACE_EVENT_ANALYZER_H_
78 77
79 #include <map> 78 #include <map>
80 79
81 #include "base/memory/ref_counted.h" 80 #include "base/memory/ref_counted.h"
82 #include "base/trace_event/trace_event.h" 81 #include "base/trace_event/trace_event.h"
83 82
84 namespace base { 83 namespace base {
85 class Value; 84 class Value;
86 } 85 }
87 86
88 namespace trace_analyzer { 87 namespace trace_analyzer {
89 class QueryNode; 88 class QueryNode;
90 89
91 // trace_analyzer::TraceEvent is a more convenient form of the 90 // trace_analyzer::TraceEvent is a more convenient form of the
92 // base::debug::TraceEvent class to make tracing-based tests easier to write. 91 // base::trace_event::TraceEvent class to make tracing-based tests easier to
92 // write.
93 struct TraceEvent { 93 struct TraceEvent {
94 // ProcessThreadID contains a Process ID and Thread ID. 94 // ProcessThreadID contains a Process ID and Thread ID.
95 struct ProcessThreadID { 95 struct ProcessThreadID {
96 ProcessThreadID() : process_id(0), thread_id(0) {} 96 ProcessThreadID() : process_id(0), thread_id(0) {}
97 ProcessThreadID(int process_id, int thread_id) 97 ProcessThreadID(int process_id, int thread_id)
98 : process_id(process_id), thread_id(thread_id) {} 98 : process_id(process_id), thread_id(thread_id) {}
99 bool operator< (const ProcessThreadID& rhs) const { 99 bool operator< (const ProcessThreadID& rhs) const {
100 if (process_id != rhs.process_id) 100 if (process_id != rhs.process_id)
101 return process_id < rhs.process_id; 101 return process_id < rhs.process_id;
102 return thread_id < rhs.thread_id; 102 return thread_id < rhs.thread_id;
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696 696
697 // Count all matches. 697 // Count all matches.
698 static inline size_t CountMatches(const TraceEventVector& events, 698 static inline size_t CountMatches(const TraceEventVector& events,
699 const Query& query) { 699 const Query& query) {
700 return CountMatches(events, query, 0u, events.size()); 700 return CountMatches(events, query, 0u, events.size());
701 } 701 }
702 702
703 } // namespace trace_analyzer 703 } // namespace trace_analyzer
704 704
705 #endif // BASE_TEST_TRACE_EVENT_ANALYZER_H_ 705 #endif // BASE_TEST_TRACE_EVENT_ANALYZER_H_
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