dbg_heap_record.cpp

memory checkd 一个工具 潜入到自己的code里面可以调试

class memory_record
{
    friend class dbg_heap_record_list;

    memory_record(void *p, memory_record *next, size_t line, const char *file, size_t id, size_t size)
        :m_pointer(p),m_next(next),m_line(line),m_id(id),m_size(size)
        {
            strncpy(m_file, file, 255);
        }

    void *m_pointer;
    memory_record *m_next;
    size_t m_line;
    size_t m_id;
    size_t m_size;
    char   m_file[256];
};

dbg_heap_record_list* dbg_heap_record_list::instance()
{
    static dbg_heap_record_list inst;
    return &inst;
}

void dbg_heap_record_list::record(void *p, const size_t line, const size_t size, const char *file)
{
    int begin_pos = (*file == '/' ? 30 : 0);
    memory_record *r = new memory_record(p, m_head, line, file + begin_pos, ++m_id, size);
    m_head = r;
}

void dbg_heap_record_list::remove(void *p)
{
    memory_record *cur  = m_head;
    memory_record *prev = 0;

    while(cur)
    {
        if(cur->m_pointer == p)
        {
            if(prev)
            {
                prev->m_next = cur->m_next;
            }
            else
            {
                m_head = cur->m_next;
            }
            delete cur;
            break;
        }
        prev = cur;
        cur = cur->m_next;
    }
}

void dbg_heap_record_list::dump()
{
    for(memory_record *cur = m_head; cur; cur = cur->m_next)
    {
        printf("\n(%4d)[%5d] %s:%d", cur->m_id, cur->m_size, cur->m_file, cur->m_line);
    }
    printf("\n");
}