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// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab
#include <iostream>
#include "Types.h"
#include "common/ceph_context.h"
#include "include/Context.h"
#include "include/stringify.h"
#define dout_subsys ceph_subsys_rbd_pwl
#undef dout_prefix
#define dout_prefix *_dout << "librbd::cache::pwl::Types: " << this << " " \
<< __func__ << ": "
using ceph::Formatter;
namespace librbd {
namespace cache {
namespace pwl {
DeferredContexts::~DeferredContexts() {
finish_contexts(nullptr, contexts, 0);
}
void DeferredContexts::add(Context* ctx) {
contexts.push_back(ctx);
}
/*
* A BlockExtent identifies a range by first and last.
*
* An Extent ("image extent") identifies a range by start and length.
*
* The ImageDispatch interface is defined in terms of image extents, and
* requires no alignment of the beginning or end of the extent. We
* convert between image and block extents here using a "block size"
* of 1.
*/
BlockExtent convert_to_block_extent(uint64_t offset_bytes, uint64_t length_bytes)
{
return BlockExtent(offset_bytes,
offset_bytes + length_bytes);
}
BlockExtent WriteLogCacheEntry::block_extent() {
return convert_to_block_extent(image_offset_bytes, write_bytes);
}
uint64_t WriteLogCacheEntry::get_offset_bytes() {
return image_offset_bytes;
}
uint64_t WriteLogCacheEntry::get_write_bytes() {
return write_bytes;
}
#ifdef WITH_RBD_SSD_CACHE
void WriteLogCacheEntry::dump(Formatter *f) const {
f->dump_unsigned("sync_gen_number", sync_gen_number);
f->dump_unsigned("write_sequence_number", write_sequence_number);
f->dump_unsigned("image_offset_bytes", image_offset_bytes);
f->dump_unsigned("write_bytes", write_bytes);
f->dump_unsigned("write_data_pos", write_data_pos);
f->dump_bool("entry_valid", is_entry_valid());
f->dump_bool("sync_point", is_sync_point());
f->dump_bool("sequenced", is_sequenced());
f->dump_bool("has_data", has_data());
f->dump_bool("discard", is_discard());
f->dump_bool("writesame", is_writesame());
f->dump_unsigned("ws_datalen", ws_datalen);
f->dump_unsigned("entry_index", entry_index);
}
void WriteLogCacheEntry::generate_test_instances(std::list<WriteLogCacheEntry*>& ls) {
ls.push_back(new WriteLogCacheEntry());
ls.push_back(new WriteLogCacheEntry);
ls.back()->sync_gen_number = 1;
ls.back()->write_sequence_number = 1;
ls.back()->image_offset_bytes = 1;
ls.back()->write_bytes = 1;
ls.back()->write_data_pos = 1;
ls.back()->set_entry_valid(true);
ls.back()->set_sync_point(true);
ls.back()->set_sequenced(true);
ls.back()->set_has_data(true);
ls.back()->set_discard(true);
ls.back()->set_writesame(true);
ls.back()->ws_datalen = 1;
ls.back()->entry_index = 1;
}
void WriteLogPoolRoot::dump(Formatter *f) const {
f->dump_unsigned("layout_version", layout_version);
f->dump_unsigned("cur_sync_gen", cur_sync_gen);
f->dump_unsigned("pool_size", pool_size);
f->dump_unsigned("flushed_sync_gen", flushed_sync_gen);
f->dump_unsigned("block_size", block_size);
f->dump_unsigned("num_log_entries", num_log_entries);
f->dump_unsigned("first_free_entry", first_free_entry);
f->dump_unsigned("first_valid_entry", first_valid_entry);
}
void WriteLogPoolRoot::generate_test_instances(std::list<WriteLogPoolRoot*>& ls) {
ls.push_back(new WriteLogPoolRoot());
ls.push_back(new WriteLogPoolRoot);
ls.back()->layout_version = 2;
ls.back()->cur_sync_gen = 1;
ls.back()->pool_size = 1024;
ls.back()->flushed_sync_gen = 1;
ls.back()->block_size = 4096;
ls.back()->num_log_entries = 10000000;
ls.back()->first_free_entry = 1;
ls.back()->first_valid_entry = 0;
}
#endif
std::ostream& operator<<(std::ostream& os,
const WriteLogCacheEntry &entry) {
os << "entry_valid=" << entry.is_entry_valid()
<< ", sync_point=" << entry.is_sync_point()
<< ", sequenced=" << entry.is_sequenced()
<< ", has_data=" << entry.has_data()
<< ", discard=" << entry.is_discard()
<< ", writesame=" << entry.is_writesame()
<< ", sync_gen_number=" << entry.sync_gen_number
<< ", write_sequence_number=" << entry.write_sequence_number
<< ", image_offset_bytes=" << entry.image_offset_bytes
<< ", write_bytes=" << entry.write_bytes
<< ", ws_datalen=" << entry.ws_datalen
<< ", entry_index=" << entry.entry_index;
return os;
}
template <typename ExtentsType>
ExtentsSummary<ExtentsType>::ExtentsSummary(const ExtentsType &extents)
: total_bytes(0), first_image_byte(0), last_image_byte(0)
{
if (extents.empty()) return;
/* These extents refer to image offsets between first_image_byte
* and last_image_byte, inclusive, but we don't guarantee here
* that they address all of those bytes. There may be gaps. */
first_image_byte = extents.front().first;
last_image_byte = first_image_byte + extents.front().second;
for (auto &extent : extents) {
/* Ignore zero length extents */
if (extent.second) {
total_bytes += extent.second;
if (extent.first < first_image_byte) {
first_image_byte = extent.first;
}
if ((extent.first + extent.second) > last_image_byte) {
last_image_byte = extent.first + extent.second;
}
}
}
}
io::Extent whole_volume_extent() {
return io::Extent({0, std::numeric_limits<uint64_t>::max()});
}
BlockExtent block_extent(const io::Extent& image_extent) {
return convert_to_block_extent(image_extent.first, image_extent.second);
}
Context * override_ctx(int r, Context *ctx) {
if (r < 0) {
/* Override next_ctx status with this error */
return new LambdaContext(
[r, ctx](int _r) {
ctx->complete(r);
});
} else {
return ctx;
}
}
std::string unique_lock_name(const std::string &name, void *address) {
return name + " (" + stringify(address) + ")";
}
} // namespace pwl
} // namespace cache
} // namespace librbd
template class librbd::cache::pwl::ExtentsSummary<librbd::io::Extents>;
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