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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 "LogEntry.h"
#include "librbd/cache/ImageWriteback.h"
#define dout_subsys ceph_subsys_rbd_pwl
#undef dout_prefix
#define dout_prefix *_dout << "librbd::cache::pwl::LogEntry: " << this << " " \
<< __func__ << ": "
namespace librbd {
namespace cache {
namespace pwl {
std::ostream& GenericLogEntry::format(std::ostream &os) const {
os << "ram_entry=[" << ram_entry
<< "], cache_entry=" << (void*)cache_entry
<< ", log_entry_index=" << log_entry_index
<< ", completed=" << completed;
return os;
}
std::ostream &operator<<(std::ostream &os,
const GenericLogEntry &entry) {
return entry.format(os);
}
std::ostream& SyncPointLogEntry::format(std::ostream &os) const {
os << "(Sync Point) ";
GenericLogEntry::format(os);
os << ", writes=" << writes
<< ", bytes=" << bytes
<< ", writes_completed=" << writes_completed
<< ", writes_flushed=" << writes_flushed
<< ", prior_sync_point_flushed=" << prior_sync_point_flushed
<< ", next_sync_point_entry=" << next_sync_point_entry;
return os;
}
std::ostream &operator<<(std::ostream &os,
const SyncPointLogEntry &entry) {
return entry.format(os);
}
bool GenericWriteLogEntry::can_writeback() const {
return (this->completed &&
(ram_entry.is_sequenced() ||
(sync_point_entry &&
sync_point_entry->completed)));
}
std::ostream& GenericWriteLogEntry::format(std::ostream &os) const {
GenericLogEntry::format(os);
os << ", sync_point_entry=[";
if (sync_point_entry) {
os << *sync_point_entry;
} else {
os << "nullptr";
}
os << "], referring_map_entries=" << referring_map_entries;
return os;
}
std::ostream &operator<<(std::ostream &os,
const GenericWriteLogEntry &entry) {
return entry.format(os);
}
void WriteLogEntry::init(bool has_data,
uint64_t current_sync_gen,
uint64_t last_op_sequence_num, bool persist_on_flush) {
ram_entry.set_has_data(has_data);
ram_entry.sync_gen_number = current_sync_gen;
if (persist_on_flush) {
/* Persist on flush. Sequence #0 is never used. */
ram_entry.write_sequence_number = 0;
} else {
/* Persist on write */
ram_entry.write_sequence_number = last_op_sequence_num;
ram_entry.set_sequenced(true);
}
ram_entry.set_sync_point(false);
ram_entry.set_discard(false);
}
std::ostream& WriteLogEntry::format(std::ostream &os) const {
os << "(Write) ";
GenericWriteLogEntry::format(os);
os << ", cache_buffer=" << (void*)cache_buffer;
os << ", cache_bp=" << cache_bp;
os << ", bl_refs=" << bl_refs;
return os;
}
std::ostream &operator<<(std::ostream &os,
const WriteLogEntry &entry) {
return entry.format(os);
}
void DiscardLogEntry::writeback(
librbd::cache::ImageWritebackInterface &image_writeback, Context *ctx) {
image_writeback.aio_discard(ram_entry.image_offset_bytes,
ram_entry.write_bytes,
m_discard_granularity_bytes, ctx);
}
void DiscardLogEntry::init(uint64_t current_sync_gen, bool persist_on_flush,
uint64_t last_op_sequence_num) {
ram_entry.sync_gen_number = current_sync_gen;
if (persist_on_flush) {
/* Persist on flush. Sequence #0 is never used. */
ram_entry.write_sequence_number = 0;
} else {
/* Persist on write */
ram_entry.write_sequence_number = last_op_sequence_num;
ram_entry.set_sequenced(true);
}
}
std::ostream &DiscardLogEntry::format(std::ostream &os) const {
os << "(Discard) ";
GenericWriteLogEntry::format(os);
return os;
}
std::ostream &operator<<(std::ostream &os,
const DiscardLogEntry &entry) {
return entry.format(os);
}
} // namespace pwl
} // namespace cache
} // namespace librbd
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