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
|
/**
* Copyright (C) 2014 MongoDB Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* 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/>.
*
* As a special exception, the copyright holders give permission to link the
* code of portions of this program with the OpenSSL library under certain
* conditions as described in each individual source file and distribute
* linked combinations including the program with the OpenSSL library. You
* must comply with the GNU Affero General Public License in all respects for
* all of the code used other than as permitted herein. If you modify file(s)
* with this exception, you may extend this exception to your version of the
* file(s), but you are not obligated to do so. If you do not wish to do so,
* delete this exception statement from your version. If you delete this
* exception statement from all source files in the program, then also delete
* it in the license file.
*/
#include "mongo/platform/basic.h"
#include "mongo/bson/bsonobjbuilder.h"
#include "mongo/db/concurrency/lock_manager_test_help.h"
#include "mongo/unittest/unittest.h"
namespace mongo {
TEST(LockStats, NoWait) {
const ResourceId resId(RESOURCE_COLLECTION, std::string("LockStats.NoWait"));
resetGlobalLockStats();
LockerForTests locker(MODE_IX);
locker.lock(resId, MODE_X);
locker.unlock(resId);
// Make sure that the waits/blocks are zero
SingleThreadedLockStats stats;
reportGlobalLockingStats(&stats);
ASSERT_EQUALS(1, stats.get(resId, MODE_X).numAcquisitions);
ASSERT_EQUALS(0, stats.get(resId, MODE_X).numWaits);
ASSERT_EQUALS(0, stats.get(resId, MODE_X).combinedWaitTimeMicros);
}
TEST(LockStats, Wait) {
const ResourceId resId(RESOURCE_COLLECTION, std::string("LockStats.Wait"));
resetGlobalLockStats();
LockerForTests locker(MODE_IX);
locker.lock(resId, MODE_X);
{
// This will block
LockerForTests lockerConflict(MODE_IX);
ASSERT_EQUALS(LOCK_WAITING, lockerConflict.lockBegin(resId, MODE_S));
// Sleep 1 millisecond so the wait time passes
ASSERT_EQUALS(LOCK_TIMEOUT, lockerConflict.lockComplete(resId, MODE_S, 1, false));
}
// Make sure that the waits/blocks are non-zero
SingleThreadedLockStats stats;
reportGlobalLockingStats(&stats);
ASSERT_EQUALS(1, stats.get(resId, MODE_X).numAcquisitions);
ASSERT_EQUALS(0, stats.get(resId, MODE_X).numWaits);
ASSERT_EQUALS(0, stats.get(resId, MODE_X).combinedWaitTimeMicros);
ASSERT_EQUALS(1, stats.get(resId, MODE_S).numAcquisitions);
ASSERT_EQUALS(1, stats.get(resId, MODE_S).numWaits);
ASSERT_GREATER_THAN(stats.get(resId, MODE_S).combinedWaitTimeMicros, 0);
}
TEST(LockStats, Reporting) {
const ResourceId resId(RESOURCE_COLLECTION, std::string("LockStats.Reporting"));
resetGlobalLockStats();
LockerForTests locker(MODE_IX);
locker.lock(resId, MODE_X);
locker.unlock(resId);
// Make sure that the waits/blocks are zero
SingleThreadedLockStats stats;
reportGlobalLockingStats(&stats);
BSONObjBuilder builder;
stats.report(&builder);
}
} // namespace mongo
|
