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
|
// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab
/*
* Ceph - scalable distributed file system
*
* Copyright (C) 2004-2006 Sage Weil <sage@newdream.net>
*
* This is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License version 2.1, as published by the Free Software
* Foundation. See file COPYING.
*
*/
#ifndef CEPH_MLOCK_H
#define CEPH_MLOCK_H
#include "msg/Message.h"
#include "mds/locks.h"
#include "mds/SimpleLock.h"
class MLock : public Message {
int32_t action; // action type
int32_t asker; // who is initiating this request
metareqid_t reqid; // for remote lock requests
__u16 lock_type; // lock object type
MDSCacheObjectInfo object_info;
bufferlist lockdata; // and possibly some data
public:
bufferlist& get_data() { return lockdata; }
int get_asker() { return asker; }
int get_action() { return action; }
metareqid_t get_reqid() { return reqid; }
int get_lock_type() { return lock_type; }
MDSCacheObjectInfo &get_object_info() { return object_info; }
MLock() : Message(MSG_MDS_LOCK) {}
MLock(int ac, int as) :
Message(MSG_MDS_LOCK),
action(ac), asker(as),
lock_type(0) { }
MLock(SimpleLock *lock, int ac, int as) :
Message(MSG_MDS_LOCK),
action(ac), asker(as),
lock_type(lock->get_type()) {
lock->get_parent()->set_object_info(object_info);
}
MLock(SimpleLock *lock, int ac, int as, bufferlist& bl) :
Message(MSG_MDS_LOCK),
action(ac), asker(as), lock_type(lock->get_type()) {
lock->get_parent()->set_object_info(object_info);
lockdata.claim(bl);
}
private:
~MLock() {}
public:
const char *get_type_name() const { return "ILock"; }
void print(ostream& out) const {
out << "lock(a=" << get_lock_action_name(action)
<< " " << get_lock_type_name(lock_type)
<< " " << object_info
<< ")";
}
void set_reqid(metareqid_t ri) { reqid = ri; }
void set_data(const bufferlist& lockdata) {
this->lockdata = lockdata;
}
void decode_payload() {
bufferlist::iterator p = payload.begin();
::decode(asker, p);
::decode(action, p);
::decode(reqid, p);
::decode(lock_type, p);
::decode(object_info, p);
::decode(lockdata, p);
}
virtual void encode_payload(uint64_t features) {
::encode(asker, payload);
::encode(action, payload);
::encode(reqid, payload);
::encode(lock_type, payload);
::encode(object_info, payload);
::encode(lockdata, payload);
}
};
#endif
|
