|
1 // Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies). |
|
2 // All rights reserved. |
|
3 // This component and the accompanying materials are made available |
|
4 // under the terms of "Eclipse Public License v1.0" |
|
5 // which accompanies this distribution, and is available |
|
6 // at the URL "http://www.eclipse.org/legal/epl-v10.html". |
|
7 // |
|
8 // Initial Contributors: |
|
9 // Nokia Corporation - initial contribution. |
|
10 // |
|
11 // Contributors: |
|
12 // |
|
13 // Description: |
|
14 // Heap Memory Allocation for CMBufPoolManager |
|
15 // |
|
16 // |
|
17 |
|
18 /** |
|
19 @file |
|
20 @internalComponent |
|
21 */ |
|
22 |
|
23 #include <es_mbman.h> |
|
24 #include "MBufMemoryManager.h" |
|
25 #include "MBufPool.h" |
|
26 #include "MBuf_Log.h" // for __FLOG_* |
|
27 |
|
28 #ifdef __FLOG_ACTIVE |
|
29 _LIT8(KComponent, "MemoryManager"); |
|
30 #endif |
|
31 |
|
32 CMBufMemoryManager* CMBufMemoryManager::NewL(TInt aMaxHeapSize) |
|
33 // |
|
34 // Construction - first phase |
|
35 // |
|
36 { |
|
37 CMBufMemoryManager* memAllocator = new(ELeave) CMBufMemoryManager; |
|
38 CleanupStack::PushL(memAllocator); |
|
39 memAllocator->ConstructL(aMaxHeapSize); |
|
40 CleanupStack::Pop(); |
|
41 |
|
42 return memAllocator; |
|
43 } |
|
44 |
|
45 CMBufMemoryManager::CMBufMemoryManager() |
|
46 : CBase() |
|
47 // |
|
48 // Constructor |
|
49 // |
|
50 { |
|
51 __FLOG_OPEN(KSubsysMBufMgr, KComponent); |
|
52 __FLOG_1(_L8("CMBufManager %x:\tCMBufMemoryManager()"),this); |
|
53 |
|
54 } |
|
55 |
|
56 void CMBufMemoryManager::ConstructL(TInt aMaxHeapSize) |
|
57 // |
|
58 // Construction - second phase |
|
59 // |
|
60 { |
|
61 iHeap = UserHeap::ChunkHeap(NULL, 0, aMaxHeapSize); |
|
62 if (iHeap==NULL) |
|
63 { |
|
64 __FLOG_2(_L8("CMBufManager::CMBufMemoryManager %x:\tCreateL(0, aMaxHeapSize %d) leaving with KErrNoMemory"), this, aMaxHeapSize); |
|
65 User::Leave(KErrNoMemory); |
|
66 } |
|
67 } |
|
68 |
|
69 CMBufMemoryManager::~CMBufMemoryManager() |
|
70 // |
|
71 // Destructor |
|
72 // |
|
73 { |
|
74 iHeap->Close(); |
|
75 |
|
76 __FLOG_CLOSE; |
|
77 } |
|
78 |
|
79 TAny* CMBufMemoryManager::Alloc(TInt aSize) |
|
80 // |
|
81 // Allocates memory from the heap |
|
82 // |
|
83 { |
|
84 TAny* pMemory; |
|
85 pMemory = iHeap->Alloc(aSize); |
|
86 |
|
87 return pMemory; |
|
88 } |
|
89 |
|
90 void CMBufMemoryManager::Free(TAny* aPtr) |
|
91 // |
|
92 // Returns memory to the heap |
|
93 // |
|
94 { |
|
95 CMBufPool* pool = (CMBufPool* ) aPtr; |
|
96 |
|
97 iHeap->Free(pool); |
|
98 } |
|
99 |
|
100 TInt CMBufMemoryManager::AllocBytes() |
|
101 // |
|
102 // Number of bytes allocated from the heap |
|
103 // |
|
104 { |
|
105 TInt allocated; |
|
106 iHeap->AllocSize(allocated); |
|
107 |
|
108 return allocated; |
|
109 } |
|
110 |