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[thin_show_dups] move scan into the duplicate_detector

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This commit is contained in:
Joe Thornber 2015-09-07 15:40:35 +01:00
parent cb56b47400
commit b6e3a12297
1 changed files with 42 additions and 40 deletions
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82
thin-provisioning/thin_show_duplicates.cc
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@ -130,6 +130,14 @@ namespace {
return zero_dups_;
}
void display_results(chunk_stream const &stream) const {
block_address meg = 1024 * 1024;
cout << "\n\n"
<< stream.size() / meg << "m examined, "
<< get_non_zeroes() / meg << "m duplicates, "
<< get_zeroes() / meg << "m zeroes\n";
}
private:
block_address non_zero_dups_;
block_address zero_dups_;
@ -137,13 +145,36 @@ namespace {
class duplicate_detector {
public:
void scan(chunk_stream &stream) {
block_address total_seen(0);
auto_ptr<progress_monitor> pbar = create_progress_bar("Examining data");
do {
// FIXME: use a wrapper class to automate the put()
chunk const &c = stream.get();
examine(c);
stream.put(c);
total_seen += c.len_;
pbar->update_percent((total_seen * 100) / stream.size());
} while (stream.next());
pbar->update_percent(100);
results_.display_results(stream);
}
duplicate_counter const &get_results() const {
return results_;
}
private:
void examine(chunk const &c) {
if (all_zeroes(c))
results_.add_zero_duplicate(c.len_);
else {
digestor_.reset();
digestor_.process_bytes(c.mem_.begin, c.mem_.end - c.mem_.begin);
unsigned int digest[5];
@ -162,11 +193,6 @@ namespace {
}
}
duplicate_counter const &get_results() const {
return results_;
}
private:
bool all_zeroes(chunk const &c) const {
for (uint8_t *ptr = c.mem_.begin; ptr != c.mem_.end; ptr++) {
if (*ptr != 0)
@ -184,37 +210,10 @@ namespace {
duplicate_counter results_;
};
void display_results(chunk_stream const &stream, duplicate_counter const &r) {
block_address meg = 1024 * 1024;
cout << "\n\n"
<< stream.size() / meg << "m examined, "
<< r.get_non_zeroes() / meg << "m duplicates, "
<< r.get_zeroes() / meg << "m zeroes\n";
}
void scan(chunk_stream &stream) {
duplicate_detector detector;
block_address total_seen(0);
auto_ptr<progress_monitor> pbar = create_progress_bar("Examining data");
do {
// FIXME: use a wrapper class to automate the put()
chunk const &c = stream.get();
detector.examine(c);
stream.put(c);
total_seen += c.len_;
pbar->update_percent((total_seen * 100) / stream.size());
} while (stream.next());
pbar->update_percent(100);
display_results(stream, detector.get_results());
}
void scan_with_variable_sized_chunks(chunk_stream &stream) {
void scan_with_variable_sized_chunks(chunk_stream &stream,
duplicate_detector &detector) {
variable_chunk_stream vstream(stream, 4096);
scan(vstream);
detector.scan(vstream);
}
int show_dups_pool(flags const &fs) {
@ -227,10 +226,12 @@ namespace {
cache_stream stream(fs.data_dev, block_size, fs.cache_mem);
pool_stream pstream(stream, tm, sb, nr_blocks);
duplicate_detector detector;
if (fs.content_based_chunks)
scan_with_variable_sized_chunks(pstream);
scan_with_variable_sized_chunks(pstream, detector);
else
scan(pstream);
detector.scan(pstream);
return 0;
}
@ -248,11 +249,12 @@ namespace {
cerr << "block size = " << block_size << "\n";
cache_stream stream(fs.data_dev, block_size, fs.cache_mem);
duplicate_detector dd;
if (fs.content_based_chunks)
scan_with_variable_sized_chunks(stream);
scan_with_variable_sized_chunks(stream, dd);
else
scan(stream);
dd.scan(stream);
return 0;
}