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// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab
/*
* Ceph - scalable distributed file system
*
* Copyright (C) 2014 Adam Crume <adamcrume@gmail.com>
*
* This is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License version 2.1, as published by the Free Software
* Foundation. See file COPYING.
*
*/
// This code assumes that IO IDs and timestamps are related monotonically.
// In other words, (a.id < b.id) == (a.timestamp < b.timestamp) for all IOs a and b.
#include "ios.hpp"
#include "rbd_replay/ActionTypes.h"
using namespace std;
using namespace rbd_replay;
namespace {
bool compare_dependencies_by_start_time(const action::Dependency &lhs,
const action::Dependency &rhs) {
return lhs.time_delta < rhs.time_delta;
}
action::Dependencies convert_dependencies(uint64_t start_time,
const io_set_t &deps) {
action::Dependencies action_deps;
action_deps.reserve(deps.size());
for (io_set_t::const_iterator it = deps.begin(); it != deps.end(); ++it) {
boost::shared_ptr<IO> io = *it;
uint64_t time_delta = 0;
if (start_time >= io->start_time()) {
time_delta = start_time - io->start_time();
}
action_deps.push_back(action::Dependency(io->ionum(), time_delta));
}
std::sort(action_deps.begin(), action_deps.end(),
compare_dependencies_by_start_time);
return action_deps;
}
} // anonymous namespace
void IO::write_debug_base(ostream& out, const string &type) const {
out << m_ionum << ": " << m_start_time / 1000000.0 << ": " << type << ", thread = " << m_thread_id << ", deps = {";
bool first = true;
for (io_set_t::iterator itr = m_dependencies.begin(), end = m_dependencies.end(); itr != end; ++itr) {
if (first) {
first = false;
} else {
out << ", ";
}
out << (*itr)->m_ionum << ": " << m_start_time - (*itr)->m_start_time;
}
out << "}";
}
ostream& operator<<(ostream &out, const IO::ptr &io) {
io->write_debug(out);
return out;
}
void StartThreadIO::encode(bufferlist &bl) const {
using ceph::encode;
action::Action action((action::StartThreadAction(
ionum(), thread_id(), convert_dependencies(start_time(), dependencies()))));
encode(action, bl);
}
void StartThreadIO::write_debug(std::ostream& out) const {
write_debug_base(out, "start thread");
}
void StopThreadIO::encode(bufferlist &bl) const {
using ceph::encode;
action::Action action((action::StopThreadAction(
ionum(), thread_id(), convert_dependencies(start_time(), dependencies()))));
encode(action, bl);
}
void StopThreadIO::write_debug(std::ostream& out) const {
write_debug_base(out, "stop thread");
}
void ReadIO::encode(bufferlist &bl) const {
using ceph::encode;
action::Action action((action::ReadAction(
ionum(), thread_id(), convert_dependencies(start_time(), dependencies()),
m_imagectx, m_offset, m_length)));
encode(action, bl);
}
void ReadIO::write_debug(std::ostream& out) const {
write_debug_base(out, "read");
out << ", imagectx=" << m_imagectx << ", offset=" << m_offset << ", length=" << m_length << "]";
}
void WriteIO::encode(bufferlist &bl) const {
using ceph::encode;
action::Action action((action::WriteAction(
ionum(), thread_id(), convert_dependencies(start_time(), dependencies()),
m_imagectx, m_offset, m_length)));
encode(action, bl);
}
void WriteIO::write_debug(std::ostream& out) const {
write_debug_base(out, "write");
out << ", imagectx=" << m_imagectx << ", offset=" << m_offset << ", length=" << m_length << "]";
}
void DiscardIO::encode(bufferlist &bl) const {
using ceph::encode;
action::Action action((action::DiscardAction(
ionum(), thread_id(), convert_dependencies(start_time(), dependencies()),
m_imagectx, m_offset, m_length)));
encode(action, bl);
}
void DiscardIO::write_debug(std::ostream& out) const {
write_debug_base(out, "discard");
out << ", imagectx=" << m_imagectx << ", offset=" << m_offset << ", length=" << m_length << "]";
}
void AioReadIO::encode(bufferlist &bl) const {
using ceph::encode;
action::Action action((action::AioReadAction(
ionum(), thread_id(), convert_dependencies(start_time(), dependencies()),
m_imagectx, m_offset, m_length)));
encode(action, bl);
}
void AioReadIO::write_debug(std::ostream& out) const {
write_debug_base(out, "aio read");
out << ", imagectx=" << m_imagectx << ", offset=" << m_offset << ", length=" << m_length << "]";
}
void AioWriteIO::encode(bufferlist &bl) const {
using ceph::encode;
action::Action action((action::AioWriteAction(
ionum(), thread_id(), convert_dependencies(start_time(), dependencies()),
m_imagectx, m_offset, m_length)));
encode(action, bl);
}
void AioWriteIO::write_debug(std::ostream& out) const {
write_debug_base(out, "aio write");
out << ", imagectx=" << m_imagectx << ", offset=" << m_offset << ", length=" << m_length << "]";
}
void AioDiscardIO::encode(bufferlist &bl) const {
using ceph::encode;
action::Action action((action::AioDiscardAction(
ionum(), thread_id(), convert_dependencies(start_time(), dependencies()),
m_imagectx, m_offset, m_length)));
encode(action, bl);
}
void AioDiscardIO::write_debug(std::ostream& out) const {
write_debug_base(out, "aio discard");
out << ", imagectx=" << m_imagectx << ", offset=" << m_offset << ", length=" << m_length << "]";
}
void OpenImageIO::encode(bufferlist &bl) const {
using ceph::encode;
action::Action action((action::OpenImageAction(
ionum(), thread_id(), convert_dependencies(start_time(), dependencies()),
m_imagectx, m_name, m_snap_name, m_readonly)));
encode(action, bl);
}
void OpenImageIO::write_debug(std::ostream& out) const {
write_debug_base(out, "open image");
out << ", imagectx=" << m_imagectx << ", name='" << m_name << "', snap_name='" << m_snap_name << "', readonly=" << m_readonly;
}
void CloseImageIO::encode(bufferlist &bl) const {
using ceph::encode;
action::Action action((action::CloseImageAction(
ionum(), thread_id(), convert_dependencies(start_time(), dependencies()),
m_imagectx)));
encode(action, bl);
}
void CloseImageIO::write_debug(std::ostream& out) const {
write_debug_base(out, "close image");
out << ", imagectx=" << m_imagectx;
}
void AioOpenImageIO::encode(bufferlist &bl) const {
using ceph::encode;
action::Action action((action::AioOpenImageAction(
ionum(), thread_id(), convert_dependencies(start_time(), dependencies()),
m_imagectx, m_name, m_snap_name, m_readonly)));
encode(action, bl);
}
void AioOpenImageIO::write_debug(std::ostream& out) const {
write_debug_base(out, "aio open image");
out << ", imagectx=" << m_imagectx << ", name='" << m_name << "', snap_name='" << m_snap_name << "', readonly=" << m_readonly;
}
void AioCloseImageIO::encode(bufferlist &bl) const {
using ceph::encode;
action::Action action((action::AioCloseImageAction(
ionum(), thread_id(), convert_dependencies(start_time(), dependencies()),
m_imagectx)));
encode(action, bl);
}
void AioCloseImageIO::write_debug(std::ostream& out) const {
write_debug_base(out, "aio close image");
out << ", imagectx=" << m_imagectx;
}
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