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
|
/*
* 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 <parc/algol/parc_Object.h>
#include <parc/algol/parc_DisplayIndented.h>
#include <parc/algol/parc_Memory.h>
#include <parc/algol/parc_LinkedList.h>
#include "parc_SimpleBufferPool.h"
struct PARCSimpleBufferPool {
size_t bufferSize;
size_t limit;
PARCLinkedList *freeList;
PARCObjectDescriptor *descriptor;
};
static bool
_parcSimpleBufferPool_Destructor(PARCSimpleBufferPool **instancePtr)
{
assertNotNull(instancePtr, "Parameter must be a non-null pointer to a PARCSimpleBufferPool pointer.");
PARCSimpleBufferPool *pool = *instancePtr;
parcLinkedList_Apply(pool->freeList, (void (*))parcObject_SetDescriptor, (const void *) &PARCBuffer_Descriptor);
parcLinkedList_Release(&pool->freeList);
return true;
}
static bool
_parcSimpleBufferPool_BufferDestructor(PARCBuffer **bufferPtr)
{
PARCBuffer *buffer = *bufferPtr;
*bufferPtr = 0;
PARCSimpleBufferPool *bufferPool = parcObjectDescriptor_GetTypeState(parcObject_GetDescriptor(buffer));
if (bufferPool->limit > parcLinkedList_Size(bufferPool->freeList)) {
parcLinkedList_Append(bufferPool->freeList, buffer);
} else {
parcBuffer_Acquire(buffer);
parcObject_SetDescriptor(buffer, &parcObject_DescriptorName(PARCBuffer));
parcBuffer_Release(&buffer);
}
return false;
}
parcObject_ImplementAcquire(parcSimpleBufferPool, PARCSimpleBufferPool);
parcObject_ImplementRelease(parcSimpleBufferPool, PARCSimpleBufferPool);
parcObject_Override(PARCSimpleBufferPool, PARCObject,
.destructor = (PARCObjectDestructor *) _parcSimpleBufferPool_Destructor);
PARCSimpleBufferPool *
parcSimpleBufferPool_Create(size_t limit, size_t bufferSize)
{
PARCSimpleBufferPool *result = parcObject_CreateInstance(PARCSimpleBufferPool);
if (result != NULL) {
result->limit = limit;
result->bufferSize = bufferSize;
result->freeList = parcLinkedList_Create();
char *string;
asprintf(&string, "PARCSimpleBufferPool=%zu", bufferSize);
result->descriptor = parcObjectDescriptor_CreateExtension(&parcObject_DescriptorName(PARCBuffer), string);
free(string);
result->descriptor->destructor = (PARCObjectDestructor *) _parcSimpleBufferPool_BufferDestructor;
result->descriptor->typeState = (PARCObjectTypeState *) result;
}
return result;
}
PARCBuffer *
parcSimpleBufferPool_GetInstance(PARCSimpleBufferPool *bufferPool)
{
PARCBuffer *result;
if (parcLinkedList_Size(bufferPool->freeList) > 0) {
result = parcLinkedList_RemoveFirst(bufferPool->freeList);
} else {
result = parcBuffer_Allocate(bufferPool->bufferSize);
parcObject_SetDescriptor(result, bufferPool->descriptor);
}
return result;
}
|
