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
170
171
172
173
|
#include "Rope.hpp"
#define DEBUG_ROPE 0
void
ConstRope::copy(char* buf) const {
char * ptr = buf;
if(DEBUG_ROPE)
ndbout_c("ConstRope::copy() head = [ %d 0x%x 0x%x ]",
head.used, head.firstItem, head.lastItem);
Uint32 left = head.used;
Ptr<Segment> curr;
curr.i = head.firstItem;
while(left > 4 * getSegmentSize()){
thePool.getPtr(curr);
memcpy(buf, curr.p->data, 4 * getSegmentSize());
curr.i = curr.p->nextPool;
left -= 4 * getSegmentSize();
buf += 4 * getSegmentSize();
}
if(left > 0){
thePool.getPtr(curr);
memcpy(buf, curr.p->data, left);
}
if(DEBUG_ROPE)
ndbout_c("ConstRope::copy()-> %s", ptr);
}
int
ConstRope::compare(const char * str, size_t len) const {
if(DEBUG_ROPE)
ndbout_c("ConstRope[ %d 0x%x 0x%x ]::compare(%s, %d)",
head.used, head.firstItem, head.lastItem, str, (int) len);
Uint32 left = head.used > len ? len : head.used;
Ptr<Segment> curr;
curr.i = head.firstItem;
while(left > 4 * getSegmentSize()){
thePool.getPtr(curr);
int res = memcmp(str, (const char*)curr.p->data, 4 * getSegmentSize());
if(res != 0){
if(DEBUG_ROPE)
ndbout_c("ConstRope::compare(%s, %d, %s) -> %d", str, left,
(const char*)curr.p->data, res);
return res;
}
curr.i = curr.p->nextPool;
left -= 4 * getSegmentSize();
str += 4 * getSegmentSize();
}
if(left > 0){
thePool.getPtr(curr);
int res = memcmp(str, (const char*)curr.p->data, left);
if(res){
if(DEBUG_ROPE)
ndbout_c("ConstRope::compare(%s, %d, %s) -> %d",
str, left, (const char*)curr.p->data, res);
return res;
}
}
if(DEBUG_ROPE)
ndbout_c("ConstRope::compare(%s, %d) -> %d", str, (int) len, head.used > len);
return head.used > len;
}
void
Rope::copy(char* buf) const {
char * ptr = buf;
if(DEBUG_ROPE)
ndbout_c("Rope::copy() head = [ %d 0x%x 0x%x ]",
head.used, head.firstItem, head.lastItem);
Uint32 left = head.used;
Ptr<Segment> curr;
curr.i = head.firstItem;
while(left > 4 * getSegmentSize()){
thePool.getPtr(curr);
memcpy(buf, curr.p->data, 4 * getSegmentSize());
curr.i = curr.p->nextPool;
left -= 4 * getSegmentSize();
buf += 4 * getSegmentSize();
}
if(left > 0){
thePool.getPtr(curr);
memcpy(buf, curr.p->data, left);
}
if(DEBUG_ROPE)
ndbout_c("Rope::copy()-> %s", ptr);
}
int
Rope::compare(const char * str, size_t len) const {
if(DEBUG_ROPE)
ndbout_c("Rope::compare(%s, %d)", str, (int) len);
Uint32 left = head.used > len ? len : head.used;
Ptr<Segment> curr;
curr.i = head.firstItem;
while(left > 4 * getSegmentSize()){
thePool.getPtr(curr);
int res = memcmp(str, (const char*)curr.p->data, 4 * getSegmentSize());
if(res != 0){
if(DEBUG_ROPE)
ndbout_c("Rope::compare(%s, %d, %s) -> %d", str, (int) len,
(const char*)curr.p->data, res);
return res;
}
curr.i = curr.p->nextPool;
left -= 4 * getSegmentSize();
str += 4 * getSegmentSize();
}
if(left > 0){
thePool.getPtr(curr);
int res = memcmp(str, (const char*)curr.p->data, left);
if(res){
if(DEBUG_ROPE)
ndbout_c("Rope::compare(%s, %d) -> %d", str, len, res);
return res;
}
}
if(DEBUG_ROPE)
ndbout_c("Rope::compare(%s, %d) -> %d", str, (int) len, head.used > len);
return head.used > len;
}
bool
Rope::assign(const char * s, size_t len, Uint32 hash){
if(DEBUG_ROPE)
ndbout_c("Rope::assign(%s, %d, 0x%x)", s, (int) len, hash);
m_hash = hash;
head.used = (head.used + 3) / 4;
release();
if(append((const Uint32*)s, len >> 2)){
if(len & 3){
Uint32 buf = 0;
const char * src = (const char*)(((Uint32*)s)+(len >> 2));
char* dst = (char*)&buf;
size_t left = len & 3;
while(left){
* dst ++ = * src++;
left--;
}
if(!append(&buf, 1))
return false;
}
head.used = len;
if(DEBUG_ROPE)
ndbout_c("Rope::assign(...) head = [ %d 0x%x 0x%x ]",
head.used, head.firstItem, head.lastItem);
return true;
}
return false;
}
void
Rope::erase(){
head.used = (head.used + 3) / 4;
release();
}
Uint32
Rope::hash(const char * p, Uint32 len){
if(DEBUG_ROPE)
ndbout_c("Rope::hash(%s, %d)", p, len);
Uint32 h = 0;
for (; len > 0; len--)
h = (h << 5) + h + (* p++);
if(DEBUG_ROPE)
ndbout_c("Rope::hash(...) -> 0x%x", h);
return h;
}
|
