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98 lines
2.4 KiB
C++
98 lines
2.4 KiB
C++
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include <stdlib.h>
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#define ADLOG_ENTRY_BLOCK_SIZE 4096
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class ADLog {
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public:
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// Use typedef in case somebody wants to process 64-bit output on a
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// 32-bit machine someday.
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typedef const char* Pointer;
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struct Entry {
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Pointer address;
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const char *type;
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const char *data; // The contents of the memory.
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size_t datasize;
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const char *allocation_stack;
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};
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ADLog();
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~ADLog();
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/*
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* Returns false on failure and true on success.
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*/
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bool Read(const char *aFilename);
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private:
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// Link structure for a circularly linked list.
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struct EntryBlock;
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struct EntryBlockLink {
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EntryBlock *mPrev;
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EntryBlock *mNext;
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};
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struct EntryBlock : public EntryBlockLink {
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Entry entries[ADLOG_ENTRY_BLOCK_SIZE];
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};
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size_t mEntryCount;
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EntryBlockLink mEntries;
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public:
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class const_iterator {
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private:
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// Only |ADLog| member functions can construct iterators.
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friend class ADLog;
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const_iterator(EntryBlock *aBlock, size_t aOffset);
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public:
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const Entry* operator*() { return mCur; }
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const Entry* operator->() { return mCur; }
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const_iterator& operator++();
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const_iterator& operator--();
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bool operator==(const const_iterator& aOther) const {
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return mCur == aOther.mCur;
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}
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bool operator!=(const const_iterator& aOther) const {
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return mCur != aOther.mCur;
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}
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private:
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void SetBlock(EntryBlock *aBlock) {
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mBlock = aBlock;
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mBlockStart = aBlock->entries;
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mBlockEnd = aBlock->entries + ADLOG_ENTRY_BLOCK_SIZE;
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}
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EntryBlock *mBlock;
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Entry *mCur, *mBlockStart, *mBlockEnd;
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// Not to be implemented.
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const_iterator operator++(int);
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const_iterator operator--(int);
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};
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const_iterator begin() {
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return const_iterator(mEntries.mNext, 0);
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}
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const_iterator end() {
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return const_iterator(mEntries.mPrev,
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mEntryCount % ADLOG_ENTRY_BLOCK_SIZE);
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}
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size_t count() { return mEntryCount; }
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};
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