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
|
// 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.skyframe;
import static com.google.common.truth.Truth.assertThat;
import static com.google.common.truth.Truth.assertWithMessage;
import com.google.devtools.build.lib.skyframe.ActionExecutionInactivityWatchdog.InactivityMonitor;
import com.google.devtools.build.lib.skyframe.ActionExecutionInactivityWatchdog.InactivityReporter;
import java.util.ArrayList;
import java.util.List;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
/** Tests for ActionExecutionInactivityWatchdog. */
@RunWith(JUnit4.class)
public class ActionExecutionInactivityWatchdogTest {
private void assertInactivityWatchdogReports(final boolean shouldReport) throws Exception {
// The monitor implementation below is a state machine. This variable indicates which state
// it is in.
final int[] monitorState = new int[] {0};
// Object that the test thread will wait on.
final Object monitorFinishedIndicator = new Object();
// Reported number of action completions in each call to waitForNextCompletion.
final int[] actionCompletions = new int[] {1, 0, 3, 0, 0, 0, 0, 2};
// Simulated delay of action completions in each call to waitForNextCompletion.
final int[] waits = new int[] {5, 10, 3, 10, 30, 60, 60, 1};
// Log of all Sleep.sleep and InactivityMonitor.waitForNextCompletion calls.
final List<String> sleepsAndWaits = new ArrayList<>();
// Mock monitor for this test.
InactivityMonitor monitor =
new InactivityMonitor() {
@Override
public int waitForNextCompletion(int timeoutMilliseconds) throws InterruptedException {
// Simulate the following sequence of events (see actionCompletions):
// 1. return in 5s (within timeout), 1 action completed; caller will sleep
// 2. return in 10s (after timeout), 0 action completed; caller will wait
// 3. return in 3s (within timeout), 3 actions completed (this is possible, since the
// waiting (thread doesn't necessarily wake up immediately); caller will sleep
// 4. return in 10s (after timeout), 0 action completed; caller will wait 30s
// 5. return in 30s (after timeout), 0 action completed still; caller will wait 60s
// 6. return in 60s (after timeout), 0 action completed still; caller will wait 60s
// 7. return in 60s (after timeout), 0 action completed still; caller will wait 60s
// 8. return in 1s (within timeout), 2 actions completed; caller will sleep, but we
// won't record that, because monitorState reached its maximum
synchronized (monitorFinishedIndicator) {
if (monitorState[0] >= actionCompletions.length) {
// Notify the test thread that the test is over.
monitorFinishedIndicator.notify();
return 1;
} else {
int index = monitorState[0];
sleepsAndWaits.add("wait:" + waits[index]);
++monitorState[0];
return actionCompletions[index];
}
}
}
@Override
public boolean hasStarted() {
return true;
}
@Override
public int getPending() {
int index = monitorState[0];
if (index >= actionCompletions.length) {
return 0;
}
int result = actionCompletions[index];
while (result == 0) {
++index;
result = actionCompletions[index];
}
return result;
}
};
final boolean[] didReportInactivity = new boolean[] {false};
InactivityReporter reporter =
new InactivityReporter() {
@Override
public void maybeReportInactivity() {
if (shouldReport) {
didReportInactivity[0] = true;
}
}
};
// Mock sleep object; just logs how much the caller's thread would've slept.
ActionExecutionInactivityWatchdog.Sleep sleep =
new ActionExecutionInactivityWatchdog.Sleep() {
@Override
public void sleep(int durationMilliseconds) throws InterruptedException {
if (monitorState[0] < actionCompletions.length) {
sleepsAndWaits.add("sleep:" + durationMilliseconds);
}
}
};
ActionExecutionInactivityWatchdog watchdog =
new ActionExecutionInactivityWatchdog(monitor, reporter, 0, sleep);
try {
synchronized (monitorFinishedIndicator) {
watchdog.start();
long startTime = System.currentTimeMillis();
boolean done = false;
while (!done) {
try {
monitorFinishedIndicator.wait(5000);
done = true;
assertWithMessage("test didn't finish under 5 seconds")
.that(System.currentTimeMillis() - startTime)
.isLessThan(5000L);
} catch (InterruptedException ie) {
// so-called Spurious Wakeup; ignore
}
}
}
} finally {
watchdog.stop();
}
assertThat(didReportInactivity[0]).isEqualTo(shouldReport);
assertThat(sleepsAndWaits)
.containsExactly(
"wait:5",
"sleep:1000",
"wait:10",
"wait:3",
"sleep:1000",
"wait:10",
"wait:30",
"wait:60",
"wait:60",
"wait:1")
.inOrder();
}
@Test
public void testInactivityWatchdogReportsWhenItShould() throws Exception {
assertInactivityWatchdogReports(true);
}
@Test
public void testInactivityWatchdogDoesNotReportWhenItShouldNot() throws Exception {
assertInactivityWatchdogReports(false);
}
}
|
