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
|
/* Copyright (c) 2003-2007 MySQL AB
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.
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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA */
#ifndef ARBIT_SIGNAL_DATA_H
#define ARBIT_SIGNAL_DATA_H
#include <string.h>
#include <NodeBitmask.hpp>
#include <NdbTick.h>
#include <NdbHost.h>
#include "SignalData.hpp"
#include "SignalDataPrint.hpp"
/**
* The ticket.
*/
class ArbitTicket {
private:
Uint32 data[2];
public:
ArbitTicket() {}
STATIC_CONST( DataLength = 2 );
STATIC_CONST( TextLength = DataLength * 8 ); // hex digits
inline void clear() {
data[0] = 0;
data[1] = 0;
}
inline void update() {
Uint16 cnt = data[0] & 0xFFFF; // previous count
Uint16 pid = NdbHost_GetProcessId();
data[0] = (pid << 16) | (cnt + 1);
data[1] = NdbTick_CurrentMillisecond();
}
inline bool match(ArbitTicket& aTicket) const {
return
data[0] == aTicket.data[0] &&
data[1] == aTicket.data[1];
}
inline void getText(char *buf, size_t buf_len) const {
BaseString::snprintf(buf, buf_len, "%08x%08x", data[0], data[1]);
}
/* inline char* getText() const {
static char buf[TextLength + 1];
getText(buf, sizeof(buf));
return buf;
} */
};
/**
* Result codes. Part of signal data. Each signal uses only
* a subset but a common namespace is convenient.
*/
class ArbitCode {
public:
STATIC_CONST( ErrTextLength = 80 );
enum {
NoInfo = 0,
// CFG signals
CfgRank1 = 1, // these have to be 1 and 2
CfgRank2 = 2,
// QMGR continueB thread state
ThreadStart = 11, // continueB thread started
// PREP signals
PrepPart1 = 21, // zero old ticket
PrepPart2 = 22, // get new ticket
PrepAtrun = 23, // late joiner gets ticket at RUN time
// arbitrator state
ApiStart = 31, // arbitrator thread started
ApiFail = 32, // arbitrator died
ApiExit = 33, // arbitrator reported it will exit
// arbitration result
LoseNodes = 41, // lose on ndb node count
WinNodes = 42, // win on ndb node count
WinGroups = 43, // we win, no need for arbitration
LoseGroups = 44, // we lose, missing node group
Partitioning = 45, // possible network partitioning
WinChoose = 46, // positive reply
LoseChoose = 47, // negative reply
LoseNorun = 48, // arbitrator required but not running
LoseNocfg = 49, // arbitrator required but none configured
// general error codes
ErrTicket = 91, // invalid arbitrator-ticket
ErrToomany = 92, // too many requests
ErrState = 93, // invalid state
ErrTimeout = 94, // timeout waiting for signals
ErrUnknown = 95 // unknown error
};
static inline void getErrText(Uint32 code, char* buf, size_t buf_len) {
switch (code) {
case ErrTicket:
BaseString::snprintf(buf, buf_len, "invalid arbitrator-ticket");
break;
case ErrToomany:
BaseString::snprintf(buf, buf_len, "too many requests");
break;
case ErrState:
BaseString::snprintf(buf, buf_len, "invalid state");
break;
case ErrTimeout:
BaseString::snprintf(buf, buf_len, "timeout");
break;
default:
BaseString::snprintf(buf, buf_len, "unknown error [code=%u]", code);
break;
}
}
};
/**
* Common class for arbitration signal data.
*/
class ArbitSignalData {
public:
Uint32 sender; // sender's node id (must be word 0)
Uint32 code; // result code or other info
Uint32 node; // arbitrator node id
ArbitTicket ticket; // ticket
NodeBitmask mask; // set of nodes
ArbitSignalData() {}
STATIC_CONST( SignalLength = 3 + ArbitTicket::DataLength + NodeBitmask::Size );
inline bool match(ArbitSignalData& aData) const {
return
node == aData.node &&
ticket.match(aData.ticket);
}
};
#endif
|
