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
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
|
/*
* Copyright (c) 2017 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <stdio.h>
#include <config.h>
#include <parc/algol/parc_Memory.h>
#include <parc/algol/parc_Object.h>
#include <parc/assert/parc_Assert.h>
#include <parc/algol/parc_DisplayIndented.h>
#include <ccnx/forwarder/metis/strategies/strategy_NexthopState.h>
struct strategy_nexthop_state {
unsigned int pi;
double avg_pi;
double weight;
};
static bool
_strategyNexthopState_Destructor(StrategyNexthopState **instancePtr)
{
return true;
}
parcObject_ImplementAcquire(strategyNexthopState, StrategyNexthopState);
parcObject_ImplementRelease(strategyNexthopState, StrategyNexthopState);
parcObject_Override(StrategyNexthopState, PARCObject,
.destructor = (PARCObjectDestructor *) _strategyNexthopState_Destructor,
.copy = (PARCObjectCopy *) strategyNexthopState_Copy,
.display = (PARCObjectDisplay *) strategyNexthopState_Display,
.toString = (PARCObjectToString *) strategyNexthopState_ToString,
.equals = (PARCObjectEquals *) strategyNexthopState_Equals,
.compare = (PARCObjectCompare *) strategyNexthopState_Compare,
.hashCode = (PARCObjectHashCode *) strategyNexthopState_HashCode,
.toJSON = (PARCObjectToJSON *) strategyNexthopState_ToJSON,
.display = (PARCObjectDisplay *) strategyNexthopState_Display);
void
strategyNexthopState_AssertValid(const StrategyNexthopState *instance)
{
parcAssertTrue(strategyNexthopState_IsValid(instance),
"StrategyNexthopState is not valid.");
}
StrategyNexthopState *
strategyNexthopState_Create()
{
StrategyNexthopState *result = parcObject_CreateInstance(StrategyNexthopState);
if (result != NULL) {
result->pi = 0;
result->avg_pi = 0.0;
result->weight = 1;
}
return result;
}
void
strategyNexthopState_Reset(StrategyNexthopState *x)
{
x->pi = 0;
x->avg_pi = 0.0;
x->weight = 1;
}
int
strategyNexthopState_Compare(const StrategyNexthopState *val, const StrategyNexthopState *other)
{
if (val == NULL) {
if (other != NULL) {
return -1;
}
} else if (other == NULL) {
return 1;
} else {
strategyNexthopState_OptionalAssertValid(val);
strategyNexthopState_OptionalAssertValid(other);
if (val->pi < other->pi) {
return -1;
} else if (val->pi > other->pi) {
return 1;
}
if (val->avg_pi < other->avg_pi) {
return -1;
} else if (val->avg_pi > other->avg_pi) {
return 1;
}
if (val->weight < other->weight) {
return -1;
} else if (val->weight > other->weight) {
return 1;
}
}
return 0;
}
StrategyNexthopState *
strategyNexthopState_Copy(const StrategyNexthopState *original)
{
StrategyNexthopState *result = strategyNexthopState_Create();
result->pi = original->pi;
result->avg_pi = original->avg_pi;
result->weight = original->weight;
return result;
}
void
strategyNexthopState_Display(const StrategyNexthopState *instance, int indentation)
{
parcDisplayIndented_PrintLine(indentation, "StrategyNexthopState@%p {", instance);
parcDisplayIndented_PrintLine(indentation + 1, "%d", instance->pi);
parcDisplayIndented_PrintLine(indentation + 1, "%f", instance->avg_pi);
parcDisplayIndented_PrintLine(indentation + 1, "%f", instance->weight);
parcDisplayIndented_PrintLine(indentation, "}");
}
bool
strategyNexthopState_Equals(const StrategyNexthopState *x, const StrategyNexthopState *y)
{
bool result = false;
if (x == y) {
result = true;
} else if (x == NULL || y == NULL) {
result = false;
} else {
strategyNexthopState_OptionalAssertValid(x);
strategyNexthopState_OptionalAssertValid(y);
if (strategyNexthopState_Compare(x, y) == 0) {
result = true;
}
}
return result;
}
PARCHashCode
strategyNexthopState_HashCode(const StrategyNexthopState *x)
{
PARCHashCode result = 0;
char str[128];
sprintf(str, "PI:%d: AVG_PI:%f: W:%f", x->pi, x->avg_pi, x->weight);
result = parcHashCode_Hash((uint8_t *) &str, strlen(str));
return result;
}
bool
strategyNexthopState_IsValid(const StrategyNexthopState *x)
{
bool result = false;
if (x != NULL) {
result = true;
}
return result;
}
PARCJSON *
strategyNexthopState_ToJSON(const StrategyNexthopState *x)
{
PARCJSON *result = parcJSON_Create();
return result;
}
char *
strategyNexthopState_ToString(const StrategyNexthopState *x)
{
//this is not implemented
parcTrapNotImplemented("strategyNexthopState_ToString is not implemented");
return NULL;
}
unsigned
strategyNexthopState_GetPI(const StrategyNexthopState *x)
{
strategyNexthopState_OptionalAssertValid(x);
return x->pi;
}
double
strategyNexthopState_GetAvgPI(const StrategyNexthopState *x)
{
strategyNexthopState_OptionalAssertValid(x);
return x->avg_pi;
}
double
strategyNexthopState_GetWeight(const StrategyNexthopState *x)
{
strategyNexthopState_OptionalAssertValid(x);
return x->weight;
}
double
strategyNexthopState_UpdateState(StrategyNexthopState *x, bool inc, double alpha)
{
if (inc) {
x->pi++;
} else {
if (x->pi > 0) {
x->pi--;
}
}
x->avg_pi = (x->avg_pi * alpha) + (x->pi * (1 - alpha));
if (x->avg_pi == 0.0) {
x->avg_pi = 0.1;
}
x->weight = 1 / x->avg_pi;
return x->weight;
}
|
