tools/trace-malloc/adreader.h@b8a032363ba2 (annotated)
tools/trace-malloc/adreader.h
Thu, 22 Jan 2015 13:21:57 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Thu, 22 Jan 2015 13:21:57 +0100
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
- permissions
- -rw-r--r--
Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6
| michael@0 | 1 | /* This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 2 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 3 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 4 | |
| michael@0 | 5 | #include <stdlib.h> |
| michael@0 | 6 | |
| michael@0 | 7 | #define ADLOG_ENTRY_BLOCK_SIZE 4096 |
| michael@0 | 8 | |
| michael@0 | 9 | class ADLog { |
| michael@0 | 10 | |
| michael@0 | 11 | public: |
| michael@0 | 12 | |
| michael@0 | 13 | // Use typedef in case somebody wants to process 64-bit output on a |
| michael@0 | 14 | // 32-bit machine someday. |
| michael@0 | 15 | typedef const char* Pointer; |
| michael@0 | 16 | |
| michael@0 | 17 | struct Entry { |
| michael@0 | 18 | Pointer address; |
| michael@0 | 19 | const char *type; |
| michael@0 | 20 | |
| michael@0 | 21 | const char *data; // The contents of the memory. |
| michael@0 | 22 | size_t datasize; |
| michael@0 | 23 | |
| michael@0 | 24 | const char *allocation_stack; |
| michael@0 | 25 | }; |
| michael@0 | 26 | |
| michael@0 | 27 | ADLog(); |
| michael@0 | 28 | ~ADLog(); |
| michael@0 | 29 | |
| michael@0 | 30 | /* |
| michael@0 | 31 | * Returns false on failure and true on success. |
| michael@0 | 32 | */ |
| michael@0 | 33 | bool Read(const char *aFilename); |
| michael@0 | 34 | |
| michael@0 | 35 | private: |
| michael@0 | 36 | // Link structure for a circularly linked list. |
| michael@0 | 37 | struct EntryBlock; |
| michael@0 | 38 | struct EntryBlockLink { |
| michael@0 | 39 | EntryBlock *mPrev; |
| michael@0 | 40 | EntryBlock *mNext; |
| michael@0 | 41 | }; |
| michael@0 | 42 | |
| michael@0 | 43 | struct EntryBlock : public EntryBlockLink { |
| michael@0 | 44 | Entry entries[ADLOG_ENTRY_BLOCK_SIZE]; |
| michael@0 | 45 | }; |
| michael@0 | 46 | |
| michael@0 | 47 | size_t mEntryCount; |
| michael@0 | 48 | EntryBlockLink mEntries; |
| michael@0 | 49 | |
| michael@0 | 50 | public: |
| michael@0 | 51 | |
| michael@0 | 52 | class const_iterator { |
| michael@0 | 53 | private: |
| michael@0 | 54 | // Only |ADLog| member functions can construct iterators. |
| michael@0 | 55 | friend class ADLog; |
| michael@0 | 56 | const_iterator(EntryBlock *aBlock, size_t aOffset); |
| michael@0 | 57 | |
| michael@0 | 58 | public: |
| michael@0 | 59 | const Entry* operator*() { return mCur; } |
| michael@0 | 60 | const Entry* operator->() { return mCur; } |
| michael@0 | 61 | |
| michael@0 | 62 | const_iterator& operator++(); |
| michael@0 | 63 | const_iterator& operator--(); |
| michael@0 | 64 | |
| michael@0 | 65 | bool operator==(const const_iterator& aOther) const { |
| michael@0 | 66 | return mCur == aOther.mCur; |
| michael@0 | 67 | } |
| michael@0 | 68 | |
| michael@0 | 69 | bool operator!=(const const_iterator& aOther) const { |
| michael@0 | 70 | return mCur != aOther.mCur; |
| michael@0 | 71 | } |
| michael@0 | 72 | |
| michael@0 | 73 | private: |
| michael@0 | 74 | void SetBlock(EntryBlock *aBlock) { |
| michael@0 | 75 | mBlock = aBlock; |
| michael@0 | 76 | mBlockStart = aBlock->entries; |
| michael@0 | 77 | mBlockEnd = aBlock->entries + ADLOG_ENTRY_BLOCK_SIZE; |
| michael@0 | 78 | } |
| michael@0 | 79 | |
| michael@0 | 80 | EntryBlock *mBlock; |
| michael@0 | 81 | Entry *mCur, *mBlockStart, *mBlockEnd; |
| michael@0 | 82 | |
| michael@0 | 83 | // Not to be implemented. |
| michael@0 | 84 | const_iterator operator++(int); |
| michael@0 | 85 | const_iterator operator--(int); |
| michael@0 | 86 | }; |
| michael@0 | 87 | |
| michael@0 | 88 | const_iterator begin() { |
| michael@0 | 89 | return const_iterator(mEntries.mNext, 0); |
| michael@0 | 90 | } |
| michael@0 | 91 | const_iterator end() { |
| michael@0 | 92 | return const_iterator(mEntries.mPrev, |
| michael@0 | 93 | mEntryCount % ADLOG_ENTRY_BLOCK_SIZE); |
| michael@0 | 94 | } |
| michael@0 | 95 | |
| michael@0 | 96 | size_t count() { return mEntryCount; } |
| michael@0 | 97 | }; |
