initial code repo

[stor4nfv.git] / src / ceph / src / osd / OpRequest.h

diff --git a/src/ceph/src/osd/OpRequest.h b/src/ceph/src/osd/OpRequest.h
new file mode 100644 (file)
index 0000000..c0e7773
--- /dev/null
+++ b/src/ceph/src/osd/OpRequest.h
@@ -0,0 +1,184 @@
+// -*- 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) 2012 New Dream Network/Sage Weil <sage@newdream.net>
+ *
+ * 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.
+ */
+
+#ifndef OPREQUEST_H_
+#define OPREQUEST_H_
+#include <sstream>
+#include <stdint.h>
+#include <vector>
+
+#include <include/utime.h>
+#include "common/Mutex.h"
+#include "include/xlist.h"
+#include "msg/Message.h"
+#include "include/memory.h"
+#include "osd/osd_types.h"
+#include "common/TrackedOp.h"
+
+/**
+ * The OpRequest takes in a Message* and takes over a single reference
+ * to it, which it puts() when destroyed.
+ */
+struct OpRequest : public TrackedOp {
+  friend class OpTracker;
+
+  // rmw flags
+  int rmw_flags;
+
+  bool check_rmw(int flag);
+  bool may_read();
+  bool may_write();
+  bool may_cache();
+  bool rwordered_forced();
+  bool rwordered();
+  bool includes_pg_op();
+  bool need_read_cap();
+  bool need_write_cap();
+  bool need_promote();
+  bool need_skip_handle_cache();
+  bool need_skip_promote();
+  void set_read();
+  void set_write();
+  void set_cache();
+  void set_class_read();
+  void set_class_write();
+  void set_pg_op();
+  void set_promote();
+  void set_skip_handle_cache();
+  void set_skip_promote();
+  void set_force_rwordered();
+
+  struct ClassInfo {
+    ClassInfo(const std::string& name, bool read, bool write,
+        bool whitelisted) :
+      name(name), read(read), write(write), whitelisted(whitelisted)
+    {}
+    const std::string name;
+    const bool read, write, whitelisted;
+  };
+
+  void add_class(const std::string& name, bool read, bool write,
+      bool whitelisted) {
+    classes_.emplace_back(name, read, write, whitelisted);
+  }
+
+  std::vector<ClassInfo> classes() const {
+    return classes_;
+  }
+
+  void _dump(Formatter *f) const override;
+
+  bool has_feature(uint64_t f) const {
+    return request->get_connection()->has_feature(f);
+  }
+
+private:
+  Message *request; /// the logical request we are tracking
+  osd_reqid_t reqid;
+  entity_inst_t req_src_inst;
+  uint8_t hit_flag_points;
+  uint8_t latest_flag_point;
+  utime_t dequeued_time;
+  static const uint8_t flag_queued_for_pg=1 << 0;
+  static const uint8_t flag_reached_pg =  1 << 1;
+  static const uint8_t flag_delayed =     1 << 2;
+  static const uint8_t flag_started =     1 << 3;
+  static const uint8_t flag_sub_op_sent = 1 << 4;
+  static const uint8_t flag_commit_sent = 1 << 5;
+
+  std::vector<ClassInfo> classes_;
+
+  OpRequest(Message *req, OpTracker *tracker);
+
+protected:
+  void _dump_op_descriptor_unlocked(ostream& stream) const override;
+  void _unregistered() override;
+  bool filter_out(const set<string>& filters) override;
+
+public:
+  ~OpRequest() override {
+    request->put();
+  }
+
+  bool check_send_map = true; ///< true until we check if sender needs a map
+  epoch_t sent_epoch = 0;     ///< client's map epoch
+  epoch_t min_epoch = 0;      ///< min epoch needed to handle this msg
+
+  bool hitset_inserted;
+  const Message *get_req() const { return request; }
+  Message *get_nonconst_req() { return request; }
+
+  entity_name_t get_source() {
+    if (request) {
+      return request->get_source();
+    } else {
+      return entity_name_t();
+    }
+  }
+
+  const char *state_string() const override {
+    switch(latest_flag_point) {
+    case flag_queued_for_pg: return "queued for pg";
+    case flag_reached_pg: return "reached pg";
+    case flag_delayed: return "delayed";
+    case flag_started: return "started";
+    case flag_sub_op_sent: return "waiting for sub ops";
+    case flag_commit_sent: return "commit sent; apply or cleanup";
+    default: break;
+    }
+    return "no flag points reached";
+  }
+
+  void mark_queued_for_pg() {
+    mark_flag_point(flag_queued_for_pg, "queued_for_pg");
+  }
+  void mark_reached_pg() {
+    mark_flag_point(flag_reached_pg, "reached_pg");
+  }
+  void mark_delayed(const string& s) {
+    mark_flag_point_string(flag_delayed, s);
+  }
+  void mark_started() {
+    mark_flag_point(flag_started, "started");
+  }
+  void mark_sub_op_sent(const string& s) {
+    mark_flag_point_string(flag_sub_op_sent, s);
+  }
+  void mark_commit_sent() {
+    mark_flag_point(flag_commit_sent, "commit_sent");
+  }
+
+  utime_t get_dequeued_time() const {
+    return dequeued_time;
+  }
+  void set_dequeued_time(utime_t deq_time) {
+    dequeued_time = deq_time;
+  }
+
+  osd_reqid_t get_reqid() const {
+    return reqid;
+  }
+
+  typedef boost::intrusive_ptr<OpRequest> Ref;
+
+private:
+  void set_rmw_flags(int flags);
+  void mark_flag_point(uint8_t flag, const char *s);
+  void mark_flag_point_string(uint8_t flag, const string& s);
+};
+
+typedef OpRequest::Ref OpRequestRef;
+
+ostream& operator<<(ostream& out, const OpRequest::ClassInfo& i);
+
+#endif /* OPREQUEST_H_ */