blob: 965cd788287430dab4baeaebb94d82ff6b55150f (
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
|
// Copyright 2015 The Bazel Authors. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package com.google.devtools.build.lib.profiler.statistics;
import com.google.devtools.build.lib.profiler.ProfileInfo;
import com.google.devtools.build.lib.profiler.ProfilePhase;
import java.util.EnumMap;
import java.util.Iterator;
import java.util.NoSuchElementException;
/**
* Extracts and keeps summary statistics from all {@link ProfilePhase}s for formatting to various
* outputs.
*/
public final class PhaseSummaryStatistics implements Iterable<ProfilePhase> {
private final long totalDurationNanos;
private final EnumMap<ProfilePhase, Long> durations;
public PhaseSummaryStatistics(ProfileInfo info) {
durations = new EnumMap<>(ProfilePhase.class);
long totalDuration = 0;
for (ProfilePhase phase : ProfilePhase.values()) {
ProfileInfo.Task phaseTask = info.getPhaseTask(phase);
if (phaseTask != null) {
long phaseDuration = info.getPhaseDuration(phaseTask);
totalDuration += phaseDuration;
durations.put(phase, phaseDuration);
}
}
totalDurationNanos = totalDuration;
}
/**
* @return whether the given {@link ProfilePhase} was executed
*/
public boolean contains(ProfilePhase phase) {
return durations.containsKey(phase);
}
/**
* @return the execution duration of a given {@link ProfilePhase}
* @throws NoSuchElementException if the given {@link ProfilePhase} was not executed
*/
public long getDurationNanos(ProfilePhase phase) {
checkContains(phase);
return durations.get(phase);
}
/**
* @return The duration of the phase relative to the sum of all phase durations
* @throws NoSuchElementException if the given {@link ProfilePhase} was not executed
*/
public double getRelativeDuration(ProfilePhase phase) {
checkContains(phase);
return (double) getDurationNanos(phase) / totalDurationNanos;
}
/**
* Converts {@link #getRelativeDuration(ProfilePhase)} to a percentage string
* @return formatted percentage string ("%.2f%%") or "N/A" when totalNanos is 0.
* @throws NoSuchElementException if the given {@link ProfilePhase} was not executed
*/
public String getPrettyPercentage(ProfilePhase phase) {
checkContains(phase);
if (totalDurationNanos == 0) {
// Return "not available" string if total is 0 and result is undefined.
return "N/A";
}
return String.format("%.2f%%", getRelativeDuration(phase) * 100);
}
public long getTotalDuration() {
return totalDurationNanos;
}
@Override
public Iterator<ProfilePhase> iterator() {
return durations.keySet().iterator();
}
private void checkContains(ProfilePhase phase) {
if (!contains(phase)) {
throw new NoSuchElementException("Phase " + phase + " was not executed");
}
}
}
|
