mirror of
https://github.com/ceph/ceph
synced 2025-01-02 17:12:31 +00:00
147 lines
3.8 KiB
C++
147 lines
3.8 KiB
C++
// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
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// vim: ts=8 sw=2 smarttab
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/*
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* Ceph - scalable distributed file system
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*
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* Copyright (C) 2016 Red Hat Inc.
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*
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* This is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License version 2.1, as published by the Free Software
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* Foundation. See file COPYING.
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*
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*/
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#pragma once
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#include <ostream>
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#include "boost/variant.hpp"
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#include "common/config.h"
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#include "common/ceph_context.h"
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#include "osd/PGQueueable.h"
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#include "common/mClockPriorityQueue.h"
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namespace ceph {
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using Request = std::pair<spg_t, PGQueueable>;
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using Client = entity_inst_t;
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// This class exists to bridge the ceph code, which treats the class
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// as the client, and the queue, where the class is
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// osd_op_type_t. So this adapter class will transform calls
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// appropriately.
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class mClockClientQueue : public OpQueue<Request, Client> {
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enum class osd_op_type_t {
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client_op, osd_subop, bg_snaptrim, bg_recovery, bg_scrub };
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using InnerClient = std::pair<entity_inst_t,osd_op_type_t>;
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using queue_t = mClockQueue<Request, InnerClient>;
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queue_t queue;
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struct mclock_op_tags_t {
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crimson::dmclock::ClientInfo client_op;
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crimson::dmclock::ClientInfo osd_subop;
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crimson::dmclock::ClientInfo snaptrim;
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crimson::dmclock::ClientInfo recov;
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crimson::dmclock::ClientInfo scrub;
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mclock_op_tags_t(CephContext *cct);
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};
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static std::unique_ptr<mclock_op_tags_t> mclock_op_tags;
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public:
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mClockClientQueue(CephContext *cct);
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static crimson::dmclock::ClientInfo
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op_class_client_info_f(const InnerClient& client);
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inline unsigned length() const override final {
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return queue.length();
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}
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// Ops of this priority should be deleted immediately
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inline void remove_by_class(Client cl,
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std::list<Request> *out) override final {
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queue.remove_by_filter(
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[&cl, out] (const Request& r) -> bool {
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if (cl == r.second.get_owner()) {
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out->push_front(r);
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return true;
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} else {
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return false;
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}
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});
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}
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void enqueue_strict(Client cl,
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unsigned priority,
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Request item) override final;
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// Enqueue op in the front of the strict queue
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void enqueue_strict_front(Client cl,
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unsigned priority,
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Request item) override final;
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// Enqueue op in the back of the regular queue
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void enqueue(Client cl,
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unsigned priority,
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unsigned cost,
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Request item) override final;
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// Enqueue the op in the front of the regular queue
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void enqueue_front(Client cl,
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unsigned priority,
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unsigned cost,
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Request item) override final;
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// Return an op to be dispatch
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Request dequeue() override final;
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// Returns if the queue is empty
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inline bool empty() const override final {
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return queue.empty();
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}
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// Formatted output of the queue
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void dump(ceph::Formatter *f) const override final;
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protected:
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struct pg_queueable_visitor_t : public boost::static_visitor<osd_op_type_t> {
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osd_op_type_t operator()(const OpRequestRef& o) const {
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// don't know if it's a client_op or a
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return osd_op_type_t::client_op;
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}
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osd_op_type_t operator()(const PGSnapTrim& o) const {
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return osd_op_type_t::bg_snaptrim;
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}
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osd_op_type_t operator()(const PGScrub& o) const {
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return osd_op_type_t::bg_scrub;
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}
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osd_op_type_t operator()(const PGRecovery& o) const {
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return osd_op_type_t::bg_recovery;
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}
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}; // class pg_queueable_visitor_t
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static pg_queueable_visitor_t pg_queueable_visitor;
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osd_op_type_t get_osd_op_type(const Request& request);
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InnerClient get_inner_client(const Client& cl, const Request& request);
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}; // class mClockClientAdapter
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} // namespace ceph
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