remove ceph code

[stor4nfv.git] / src / ceph / src / os / filestore / FDCache.h

diff --git a/src/ceph/src/os/filestore/FDCache.h b/src/ceph/src/os/filestore/FDCache.h
deleted file mode 100644 (file)
index 8e037ac..0000000
--- a/src/ceph/src/os/filestore/FDCache.h
+++ /dev/null
@@ -1,111 +0,0 @@
-// -*- 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) 2013 Inktank Storage, Inc.
- *
- * 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 CEPH_FDCACHE_H
-#define CEPH_FDCACHE_H
-
-#include <memory>
-#include <errno.h>
-#include <cstdio>
-#include "common/hobject.h"
-#include "common/Mutex.h"
-#include "common/Cond.h"
-#include "common/shared_cache.hpp"
-#include "include/compat.h"
-#include "include/intarith.h"
-
-/**
- * FD Cache
- */
-class FDCache : public md_config_obs_t {
-public:
-  /**
-   * FD
-   *
-   * Wrapper for an fd.  Destructor closes the fd.
-   */
-  class FD {
-  public:
-    const int fd;
-    explicit FD(int _fd) : fd(_fd) {
-      assert(_fd >= 0);
-    }
-    int operator*() const {
-      return fd;
-    }
-    ~FD() {
-      VOID_TEMP_FAILURE_RETRY(::close(fd));
-    }
-  };
-
-private:
-  CephContext *cct;
-  const int registry_shards;
-  SharedLRU<ghobject_t, FD> *registry;
-
-public:
-  explicit FDCache(CephContext *cct) : cct(cct),
-  registry_shards(MAX(cct->_conf->filestore_fd_cache_shards, 1)) {
-    assert(cct);
-    cct->_conf->add_observer(this);
-    registry = new SharedLRU<ghobject_t, FD>[registry_shards];
-    for (int i = 0; i < registry_shards; ++i) {
-      registry[i].set_cct(cct);
-      registry[i].set_size(
-          MAX((cct->_conf->filestore_fd_cache_size / registry_shards), 1));
-    }
-  }
-  ~FDCache() override {
-    cct->_conf->remove_observer(this);
-    delete[] registry;
-  }
-  typedef ceph::shared_ptr<FD> FDRef;
-
-  FDRef lookup(const ghobject_t &hoid) {
-    int registry_id = hoid.hobj.get_hash() % registry_shards;
-    return registry[registry_id].lookup(hoid);
-  }
-
-  FDRef add(const ghobject_t &hoid, int fd, bool *existed) {
-    int registry_id = hoid.hobj.get_hash() % registry_shards;
-    return registry[registry_id].add(hoid, new FD(fd), existed);
-  }
-
-  /// clear cached fd for hoid, subsequent lookups will get an empty FD
-  void clear(const ghobject_t &hoid) {
-    int registry_id = hoid.hobj.get_hash() % registry_shards;
-    registry[registry_id].purge(hoid);
-  }
-
-  /// md_config_obs_t
-  const char** get_tracked_conf_keys() const override {
-    static const char* KEYS[] = {
-      "filestore_fd_cache_size",
-      NULL
-    };
-    return KEYS;
-  }
-  void handle_conf_change(const md_config_t *conf,
-                         const std::set<std::string> &changed) override {
-    if (changed.count("filestore_fd_cache_size")) {
-      for (int i = 0; i < registry_shards; ++i)
-        registry[i].set_size(
-              MAX((conf->filestore_fd_cache_size / registry_shards), 1));
-    }
-  }
-
-};
-typedef FDCache::FDRef FDRef;
-
-#endif