-
Notifications
You must be signed in to change notification settings - Fork 2.3k
/
ProfilingTracer.java
186 lines (160 loc) · 4.98 KB
/
ProfilingTracer.java
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
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
/*
* Copyright (c) 2002-2017 "Neo Technology,"
* Network Engine for Objects in Lund AB [http://neotechnology.com]
*
* This file is part of Neo4j.
*
* Neo4j is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.neo4j.cypher.internal.compiled_runtime.v3_2.codegen.profiling;
import java.util.HashMap;
import java.util.Map;
import org.neo4j.cypher.internal.compiled_runtime.v3_2.codegen.QueryExecutionEvent;
import org.neo4j.cypher.internal.compiled_runtime.v3_2.codegen.QueryExecutionTracer;
import org.neo4j.cypher.internal.compiler.v3_2.planDescription.Id;
import org.neo4j.cypher.internal.compiler.v3_2.spi.KernelStatisticProvider;
public class ProfilingTracer implements QueryExecutionTracer
{
public interface ProfilingInformation
{
long time();
long dbHits();
long rows();
long pageCacheHits();
long pageCacheMisses();
}
public interface Clock
{
long nanoTime();
Clock SYSTEM_TIMER = System::nanoTime;
}
private static final Data ZERO = new Data();
private final Clock clock;
private final KernelStatisticProvider statisticProvider;
private final Map<Id, Data> data = new HashMap<>();
public ProfilingTracer( KernelStatisticProvider statisticProvider )
{
this( Clock.SYSTEM_TIMER, statisticProvider );
}
ProfilingTracer( Clock clock, KernelStatisticProvider statisticProvider )
{
this.clock = clock;
this.statisticProvider = statisticProvider;
}
public ProfilingInformation get( Id query )
{
Data value = data.get( query );
return value == null ? ZERO : value;
}
public long timeOf( Id query )
{
return get( query ).time();
}
public long dbHitsOf( Id query )
{
return get( query ).dbHits();
}
public long rowsOf( Id query )
{
return get( query ).rows();
}
@Override
public QueryExecutionEvent executeOperator( Id queryId )
{
Data data = this.data.get( queryId );
if ( data == null && queryId != null )
{
this.data.put( queryId, data = new Data() );
}
return new ExecutionEvent( clock, statisticProvider, data );
}
private static class ExecutionEvent implements QueryExecutionEvent
{
private final long start;
private final Clock clock;
private final KernelStatisticProvider statisticProvider;
private final Data data;
private long hitCount;
private long rowCount;
ExecutionEvent( Clock clock, KernelStatisticProvider statisticProvider, Data data )
{
this.clock = clock;
this.statisticProvider = statisticProvider;
this.data = data;
this.start = clock.nanoTime();
}
@Override
public void close()
{
long executionTime = clock.nanoTime() - start;
long pageCacheHits = statisticProvider.getPageCacheHits();
long pageCacheFaults = statisticProvider.getPageCacheMisses();
if ( data != null )
{
data.update( executionTime, hitCount, rowCount, pageCacheHits, pageCacheFaults );
}
}
@Override
public void dbHit()
{
hitCount++;
}
@Override
public void row()
{
rowCount++;
}
}
private static class Data implements ProfilingInformation
{
private long time;
private long hits;
private long rows;
private long pageCacheHits;
private long pageCacheMisses;
public void update( long time, long hits, long rows, long pageCacheHits, long pageCacheMisses )
{
this.time += time;
this.hits += hits;
this.rows += rows;
this.pageCacheHits += pageCacheHits;
this.pageCacheMisses += pageCacheMisses;
}
@Override
public long time()
{
return time;
}
@Override
public long dbHits()
{
return hits;
}
@Override
public long rows()
{
return rows;
}
@Override
public long pageCacheHits()
{
return pageCacheHits;
}
@Override
public long pageCacheMisses()
{
return pageCacheMisses;
}
}
}