+++ /dev/null
-// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
-#include "include/interval_set.h"
-#include "include/buffer_fwd.h"
-#include <map>
-
-#ifndef COMMON_OBJECT_H
-#define COMMON_OBJECT_H
-
-enum {
- RANDOMWRITEFULL,
- DELETED,
- CLONERANGE
-};
-
-bool test_object_contents();
-
-class ObjectContents {
- uint64_t _size;
- std::map<uint64_t, unsigned int> seeds;
- interval_set<uint64_t> written;
- bool _exists;
-public:
- class Iterator {
- ObjectContents *parent;
- std::map<uint64_t, unsigned int>::iterator iter;
- unsigned int current_state;
- int current_val;
- uint64_t pos;
- private:
- unsigned int get_state(uint64_t pos);
- public:
- explicit Iterator(ObjectContents *parent) :
- parent(parent), iter(parent->seeds.end()),
- current_state(0), current_val(0), pos(-1) {
- seek_to_first();
- }
- char operator*() {
- return parent->written.contains(pos) ?
- static_cast<char>(current_val % 256) : '\0';
- }
- uint64_t get_pos() {
- return pos;
- }
- void seek_to(uint64_t _pos) {
- if (pos > _pos ||
- (iter != parent->seeds.end() && _pos >= iter->first)) {
- iter = parent->seeds.upper_bound(_pos);
- --iter;
- current_state = iter->second;
- current_val = rand_r(¤t_state);
- pos = iter->first;
- ++iter;
- }
- while (pos < _pos) ++(*this);
- }
-
- void seek_to_first() {
- seek_to(0);
- }
- Iterator &operator++() {
- ++pos;
- if (iter != parent->seeds.end() && pos >= iter->first) {
- assert(pos == iter->first);
- current_state = iter->second;
- ++iter;
- }
- current_val = rand_r(¤t_state);
- return *this;
- }
- bool valid() {
- return pos < parent->size();
- }
- friend class ObjectContents;
- };
-
- ObjectContents() : _size(0), _exists(false) {
- seeds[0] = 0;
- }
-
- explicit ObjectContents(bufferlist::iterator &bp) {
- ::decode(_size, bp);
- ::decode(seeds, bp);
- ::decode(written, bp);
- ::decode(_exists, bp);
- }
-
- void clone_range(ObjectContents &other,
- interval_set<uint64_t> &intervals);
- void write(unsigned int seed,
- uint64_t from,
- uint64_t len);
- Iterator get_iterator() {
- return Iterator(this);
- }
-
- uint64_t size() const { return _size; }
-
- bool exists() { return _exists; }
-
- void debug(std::ostream &out) {
- out << "_size is " << _size << std::endl;
- out << "seeds is: (";
- for (std::map<uint64_t, unsigned int>::iterator i = seeds.begin();
- i != seeds.end();
- ++i) {
- out << "[" << i->first << "," << i->second << "], ";
- }
- out << ")" << std::endl;
- out << "written is " << written << std::endl;
- out << "_exists is " << _exists << std::endl;
- }
-
- void encode(bufferlist &bl) const {
- ::encode(_size, bl);
- ::encode(seeds, bl);
- ::encode(written, bl);
- ::encode(_exists, bl);
- }
-};
-
-#endif