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
|
/**
* 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 <valarray>
#include "mongo/db/client.h"
#include "mongo/db/commands/server_status.h"
#include "mongo/db/concurrency/lock_stats.h"
#include "mongo/db/jsobj.h"
#include "mongo/db/operation_context.h"
namespace mongo {
namespace {
class GlobalLockServerStatusSection : public ServerStatusSection {
public:
GlobalLockServerStatusSection() : ServerStatusSection("globalLock") {
_started = curTimeMillis64();
}
virtual bool includeByDefault() const {
return true;
}
virtual BSONObj generateSection(OperationContext* txn, const BSONElement& configElement) const {
std::valarray<int> clientStatusCounts(5);
// This returns the blocked lock states
for (ServiceContext::LockedClientsCursor cursor(txn->getClient()->getServiceContext());
Client* client = cursor.next();) {
invariant(client);
stdx::unique_lock<Client> uniqueLock(*client);
const OperationContext* opCtx = client->getOperationContext();
auto state = opCtx ? opCtx->lockState()->getClientState() : Locker::kInactive;
invariant(state < sizeof(clientStatusCounts));
clientStatusCounts[state]++;
}
// Construct the actual return value out of the mutex
BSONObjBuilder ret;
ret.append("totalTime", (long long)(1000 * (curTimeMillis64() - _started)));
{
BSONObjBuilder currentQueueBuilder(ret.subobjStart("currentQueue"));
currentQueueBuilder.append("total",
clientStatusCounts[Locker::kQueuedReader] +
clientStatusCounts[Locker::kQueuedWriter]);
currentQueueBuilder.append("readers", clientStatusCounts[Locker::kQueuedReader]);
currentQueueBuilder.append("writers", clientStatusCounts[Locker::kQueuedWriter]);
currentQueueBuilder.done();
}
{
BSONObjBuilder activeClientsBuilder(ret.subobjStart("activeClients"));
activeClientsBuilder.append("total", clientStatusCounts.sum());
activeClientsBuilder.append("readers", clientStatusCounts[Locker::kActiveReader]);
activeClientsBuilder.append("writers", clientStatusCounts[Locker::kActiveWriter]);
activeClientsBuilder.done();
}
ret.done();
return ret.obj();
}
private:
unsigned long long _started;
} globalLockServerStatusSection;
class LockStatsServerStatusSection : public ServerStatusSection {
public:
LockStatsServerStatusSection() : ServerStatusSection("locks") {}
virtual bool includeByDefault() const {
return true;
}
virtual BSONObj generateSection(OperationContext* txn, const BSONElement& configElement) const {
BSONObjBuilder ret;
SingleThreadedLockStats stats;
reportGlobalLockingStats(&stats);
stats.report(&ret);
return ret.obj();
}
} lockStatsServerStatusSection;
} // namespace
} // namespace mongo
|
