X-Git-Url: https://gerrit.opnfv.org/gerrit/gitweb?a=blobdiff_plain;f=src%2Fceph%2Fsrc%2Fos%2Fbluestore%2FBitAllocator.h;fp=src%2Fceph%2Fsrc%2Fos%2Fbluestore%2FBitAllocator.h;h=0000000000000000000000000000000000000000;hb=7da45d65be36d36b880cc55c5036e96c24b53f00;hp=90d9e862cf6aedb712b65f564628e8f836f06baa;hpb=691462d09d0987b47e112d6ee8740375df3c51b2;p=stor4nfv.git

diff --git a/src/ceph/src/os/bluestore/BitAllocator.h b/src/ceph/src/os/bluestore/BitAllocator.h
deleted file mode 100644
index 90d9e86..0000000
--- a/src/ceph/src/os/bluestore/BitAllocator.h
+++ /dev/null
@@ -1,569 +0,0 @@
-// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
-// vim: ts=8 sw=2 smarttab
-/*
- * Bitmap based in memory allocator.
- * Author: Ramesh Chander, Ramesh.Chander@sandisk.com
- */
-
-#ifndef  CEPH_OS_BLUESTORE_BITALLOCATOR_H
-#define CEPH_OS_BLUESTORE_BITALLOCATOR_H
-
-
-#include <assert.h>
-#include <stdint.h>
-#include <pthread.h>
-#include <mutex>
-#include <atomic>
-#include <vector>
-#include "include/intarith.h"
-#include "os/bluestore/bluestore_types.h"
-
-#define alloc_assert assert
-
-#ifdef BIT_ALLOCATOR_DEBUG
-#define alloc_dbg_assert(x) assert(x)
-#else
-#define alloc_dbg_assert(x) (static_cast<void> (0))
-#endif
-
-
-class BitAllocatorStats {
-public:
-  std::atomic<int64_t> m_total_alloc_calls;
-  std::atomic<int64_t> m_total_free_calls;
-  std::atomic<int64_t> m_total_allocated;
-  std::atomic<int64_t> m_total_freed;
-  std::atomic<int64_t> m_total_serial_scans;
-  std::atomic<int64_t> m_total_concurrent_scans;
-  std::atomic<int64_t> m_total_node_scanned;
-
-  BitAllocatorStats() {
-    m_total_alloc_calls = 0;
-    m_total_free_calls = 0;
-    m_total_allocated = 0;
-    m_total_freed = 0;
-    m_total_serial_scans = 0;
-    m_total_concurrent_scans = 0;
-    m_total_node_scanned = 0;
-  }
-
-  void add_alloc_calls(int64_t val) {
-    std::atomic_fetch_add(&m_total_alloc_calls, val);
-  }
-  void add_free_calls(int64_t val) {
-    std::atomic_fetch_add(&m_total_free_calls, val);
-  }
-  void add_allocated(int64_t val) {
-    std::atomic_fetch_add(&m_total_allocated, val);
-  }
-  void add_freed(int64_t val) {
-    std::atomic_fetch_add(&m_total_freed, val);
-  }
-  void add_serial_scans(int64_t val) {
-    std::atomic_fetch_add(&m_total_serial_scans, val);
-  }
-  void add_concurrent_scans(int64_t val) {
-    std::atomic_fetch_add(&m_total_concurrent_scans, val);
-  }
-  void add_node_scanned(int64_t val) {
-    std::atomic_fetch_add(&m_total_node_scanned, val);
-  }
-};
-
-template <class BitMapEntity>
-class BitMapEntityIter {
-  typedef mempool::bluestore_alloc::vector<BitMapEntity> BitMapEntityVector;
-  BitMapEntityVector *m_list;
-  int64_t m_start_idx;
-  int64_t m_cur_idx;
-  bool m_wrap;
-  bool m_wrapped;
-  bool m_end;
-public:
-
-  void init(BitMapEntityVector *list, bool wrap, int64_t start_idx) {
-    m_list = list;
-    m_wrap = wrap;
-    m_start_idx = start_idx;
-    m_cur_idx = m_start_idx;
-    m_wrapped = false;
-    m_end = false;
-  }
-
-  BitMapEntityIter(BitMapEntityVector *list, int64_t start_idx) {
-    init(list, false, start_idx);
-  }
-  BitMapEntityIter(BitMapEntityVector *list, int64_t start_idx, bool wrap) {
-    init(list, wrap, start_idx);
-  }
-
-  BitMapEntity *next() {
-    int64_t cur_idx = m_cur_idx;
-
-    if (m_wrapped &&
-      cur_idx == m_start_idx) {
-      /*
-       * End of wrap cycle + 1
-       */
-      if (!m_end) {
-        m_end = true;
-        return &(*m_list)[cur_idx];
-      }
-      return NULL;
-    }
-    m_cur_idx++;
-
-    if (m_cur_idx == (int64_t)m_list->size() &&
-        m_wrap) {
-      m_cur_idx = 0;
-      m_wrapped = true;
-    }
-
-    if (cur_idx == (int64_t)m_list->size()) {
-      /*
-       * End of list
-       */
-      return NULL;
-    }
-
-    alloc_assert(cur_idx < (int64_t)m_list->size());
-    return &(*m_list)[cur_idx];
-  }
-
-  int64_t index() {
-    return m_cur_idx;
-  }
-};
-
-typedef unsigned long bmap_t;
-typedef mempool::bluestore_alloc::vector<bmap_t> bmap_mask_vec_t;
-
-class BmapEntry {
-private:
-  bmap_t m_bits;
-
-public:
-  MEMPOOL_CLASS_HELPERS();
-  static bmap_t full_bmask() {
-    return (bmap_t) -1;
-  }
-  static int64_t size() {
-    return (sizeof(bmap_t) * 8);
-  }
-  static bmap_t empty_bmask() {
-    return (bmap_t) 0;
-  }
-  static bmap_t align_mask(int x) {
-    return ((x) >= BmapEntry::size()? (bmap_t) -1 : (~(((bmap_t) -1) >> (x))));
-  }
-  static bmap_t bit_mask(int bit_num) {
-    return (bmap_t) 0x1 << ((BmapEntry::size() - 1) - bit_num);
-  }
-  bmap_t atomic_fetch() {
-    return m_bits;
-  }
-  BmapEntry(CephContext*, bool val);
-  BmapEntry(CephContext*) {
-    m_bits = 0;
-  }
-  BmapEntry(const BmapEntry& bmap) {
-    m_bits = bmap.m_bits;
-  }
-
-  void clear_bit(int bit);
-  void clear_bits(int offset, int num_bits);
-  void set_bits(int offset, int num_bits);
-  bool check_n_set_bit(int bit);
-  bool check_bit(int bit);
-  bool is_allocated(int64_t start_bit, int64_t num_bits);
-
-  int find_n_cont_bits(int start_offset, int64_t num_bits);
-  int find_n_free_bits(int start_idx, int64_t max_bits,
-           int *free_bit, int *end_idx);
-  int find_first_set_bits(int64_t required_blocks, int bit_offset,
-          int *start_offset, int64_t *scanned);
-
-  void dump_state(CephContext* cct, const int& count);
-  ~BmapEntry();
-
-};
-
-class BitMapArea {
-protected:
-  int16_t m_area_index;
-
-public:
-  MEMPOOL_CLASS_HELPERS();
-  static int64_t get_zone_size(CephContext* cct);
-  static int64_t get_span_size(CephContext* cct);
-  static int get_level(CephContext* cct, int64_t total_blocks);
-  static int64_t get_level_factor(CephContext* cct, int level);
-  virtual bool is_allocated(int64_t start_block, int64_t num_blocks) = 0;
-  virtual bool is_exhausted() = 0;
-  virtual bool child_check_n_lock(BitMapArea *child, int64_t required) {
-      ceph_abort();
-      return true;
-  }
-  virtual bool child_check_n_lock(BitMapArea *child, int64_t required, bool lock) {
-      ceph_abort();
-      return true;
-  }
-  virtual void child_unlock(BitMapArea *child) {
-    ceph_abort();
-  }
-
-  virtual void lock_excl() = 0;
-  virtual bool lock_excl_try() {
-    ceph_abort();
-    return false;
-  }
-  virtual void lock_shared() {
-    ceph_abort();
-    return;
-  }
-  virtual void unlock() = 0;
-
-  virtual int64_t sub_used_blocks(int64_t num_blocks) = 0;
-  virtual int64_t add_used_blocks(int64_t num_blocks) = 0;
-  virtual bool reserve_blocks(int64_t num_blocks) = 0;
-  virtual void unreserve(int64_t num_blocks, int64_t allocated) = 0;
-  virtual int64_t get_reserved_blocks() = 0;
-  virtual int64_t get_used_blocks() = 0;
-
-  virtual void shutdown() = 0;
-
-  virtual int64_t alloc_blocks_dis(int64_t num_blocks, int64_t min_alloc,
-             int64_t hint, int64_t blk_off, ExtentList *block_list) {
-    ceph_abort();
-    return 0;
-  }
-
-  virtual void set_blocks_used(int64_t start_block, int64_t num_blocks) = 0;
-  virtual void free_blocks(int64_t start_block, int64_t num_blocks) = 0;
-  virtual int64_t size() = 0;
-
-  int64_t child_count();
-  int64_t get_index();
-  int64_t get_level();
-  virtual void dump_state(CephContext* cct, int& count) = 0;
-  BitMapArea(CephContext*) { }
-  virtual ~BitMapArea() { }
-};
-
-class BitMapAreaList {
-
-private:
-  std::vector<BitMapArea*> m_items;
-
-public:
-  /* Must be DefaultConstructible as BitMapAreaIN and derivates employ
-   * a deferred init, sorry. */
-  BitMapAreaList() = default;
-
-  BitMapAreaList(std::vector<BitMapArea*>&& m_items)
-    : m_items(std::move(m_items)) {
-  }
-
-  BitMapArea *get_nth_item(const int64_t idx) {
-    return m_items[idx];
-  }
-
-  /* FIXME: we really should use size_t. */
-  int64_t size() const {
-    return m_items.size();
-  }
-};
-
-/* Intensionally inlined for the sake of BitMapAreaLeaf::alloc_blocks_dis_int. */
-class BmapEntityListIter {
-  BitMapAreaList* m_list;
-  int64_t m_start_idx;
-  int64_t m_cur_idx;
-  bool m_wrap;
-  bool m_wrapped;
-  bool m_end;
-
-public:
-  BmapEntityListIter(BitMapAreaList* const list,
-                     const int64_t start_idx,
-                     const bool wrap = false)
-    : m_list(list),
-      m_start_idx(start_idx),
-      m_cur_idx(start_idx),
-      m_wrap(wrap),
-      m_wrapped(false),
-      m_end(false) {
-  }
-
-  BitMapArea* next() {
-    int64_t cur_idx = m_cur_idx;
-
-    if (m_wrapped &&
-      cur_idx == m_start_idx) {
-      /*
-       * End of wrap cycle + 1
-       */
-      if (!m_end) {
-        m_end = true;
-        return m_list->get_nth_item(cur_idx);
-      }
-      return NULL;
-    }
-    m_cur_idx++;
-
-    if (m_cur_idx == m_list->size() &&
-        m_wrap) {
-      m_cur_idx = 0;
-      m_wrapped = true;
-    }
-    if (cur_idx == m_list->size()) {
-      /*
-       * End of list
-       */
-      return NULL;
-    }
-
-    /* This method should be *really* fast as it's being executed over
-     * and over during traversal of allocators indexes. */
-    alloc_dbg_assert(cur_idx < m_list->size());
-    return m_list->get_nth_item(cur_idx);
-  }
-
-  int64_t index();
-};
-
-typedef mempool::bluestore_alloc::vector<BmapEntry> BmapEntryVector;
-
-class BitMapZone: public BitMapArea {
-
-private:
-  std::atomic<int32_t> m_used_blocks;
-  BmapEntryVector m_bmap_vec;
-  std::mutex m_lock;
-
-public:
-  MEMPOOL_CLASS_HELPERS();
-  static int64_t count;
-  static int64_t total_blocks;
-  static void incr_count() { count++;}
-  static int64_t get_total_blocks() {return total_blocks;}
-  bool is_allocated(int64_t start_block, int64_t num_blocks) override;
-  bool is_exhausted() override final;
-  void reset_marker();
-
-  int64_t sub_used_blocks(int64_t num_blocks) override;
-  int64_t add_used_blocks(int64_t num_blocks) override;
-  bool reserve_blocks(int64_t num_blocks) override;
-  void unreserve(int64_t num_blocks, int64_t allocated) override;
-  int64_t get_reserved_blocks() override;
-  int64_t get_used_blocks() override final;
-  int64_t size() override final {
-    return get_total_blocks();
-  }
-
-  void lock_excl() override;
-  bool lock_excl_try() override;
-  void unlock() override;
-  bool check_locked();
-
-  void free_blocks_int(int64_t start_block, int64_t num_blocks);
-  void init(CephContext* cct, int64_t zone_num, int64_t total_blocks, bool def);
-
-  BitMapZone(CephContext* cct, int64_t total_blocks, int64_t zone_num);
-  BitMapZone(CephContext* cct, int64_t total_blocks, int64_t zone_num, bool def);
-
-  ~BitMapZone() override;
-  void shutdown() override;
-  int64_t alloc_blocks_dis(int64_t num_blocks, int64_t min_alloc, int64_t hint,
-        int64_t blk_off, ExtentList *block_list) override;  
-  void set_blocks_used(int64_t start_block, int64_t num_blocks) override;
-
-  void free_blocks(int64_t start_block, int64_t num_blocks) override;
-  void dump_state(CephContext* cct, int& count) override;
-};
-
-class BitMapAreaIN: public BitMapArea{
-
-protected:
-  int64_t m_child_size_blocks;
-  int64_t m_total_blocks;
-  int16_t m_level;
-
-  int64_t m_used_blocks;
-  int64_t m_reserved_blocks;
-  std::mutex m_blocks_lock;
-  BitMapAreaList m_child_list;
-
-  bool is_allocated(int64_t start_block, int64_t num_blocks) override;
-  bool is_exhausted() override;
-
-  bool child_check_n_lock(BitMapArea *child, int64_t required, bool lock) override {
-    ceph_abort();
-    return false;
-  }
-
-  bool child_check_n_lock(BitMapArea *child, int64_t required) override;
-  void child_unlock(BitMapArea *child) override;
-
-  void lock_excl() override {
-    return;
-  }
-  void lock_shared() override {
-    return;
-  }
-  void unlock() override {
-    return;
-  }
-
-  void init(CephContext* cct, int64_t total_blocks, int64_t zone_size_block, bool def);
-  void init_common(CephContext* cct,
-                   int64_t total_blocks,
-                   int64_t zone_size_block,
-                   bool def);
-  int64_t alloc_blocks_dis_int_work(bool wrap, int64_t num_blocks, int64_t min_alloc, int64_t hint,
-        int64_t blk_off, ExtentList *block_list);  
-
-  int64_t alloc_blocks_int_work(bool wait, bool wrap,
-                         int64_t num_blocks, int64_t hint, int64_t *start_block);
-
-public:
-  MEMPOOL_CLASS_HELPERS();
-  BitMapAreaIN(CephContext* cct);
-  BitMapAreaIN(CephContext* cct, int64_t zone_num, int64_t total_blocks);
-  BitMapAreaIN(CephContext* cct, int64_t zone_num, int64_t total_blocks,
-	       bool def);
-
-  ~BitMapAreaIN() override;
-  void shutdown() override;
-  int64_t sub_used_blocks(int64_t num_blocks) override;
-  int64_t add_used_blocks(int64_t num_blocks) override;
-  bool reserve_blocks(int64_t num_blocks) override;
-  void unreserve(int64_t num_blocks, int64_t allocated) override;
-  int64_t get_reserved_blocks() override;
-  int64_t get_used_blocks() override;
-  virtual int64_t get_used_blocks_adj();
-  int64_t size() override {
-    return m_total_blocks;
-  }
-  using BitMapArea::alloc_blocks_dis; //non-wait version
-
-  virtual int64_t alloc_blocks_dis_int(int64_t num_blocks, int64_t min_alloc, int64_t hint,
-                                       int64_t blk_off, ExtentList *block_list);  
-  int64_t alloc_blocks_dis(int64_t num_blocks, int64_t min_alloc, int64_t hint,
-                           int64_t blk_off, ExtentList *block_list) override;  
-  virtual void set_blocks_used_int(int64_t start_block, int64_t num_blocks);
-  void set_blocks_used(int64_t start_block, int64_t num_blocks) override;
-
-  virtual void free_blocks_int(int64_t start_block, int64_t num_blocks);
-  void free_blocks(int64_t start_block, int64_t num_blocks) override;
-  void dump_state(CephContext* cct, int& count) override;
-};
-
-class BitMapAreaLeaf: public BitMapAreaIN{
-
-private:
-  void init(CephContext* cct, int64_t total_blocks, int64_t zone_size_block,
-            bool def);
-
-public:
-  MEMPOOL_CLASS_HELPERS();
-  static int64_t count;
-  static void incr_count() { count++;}
-  BitMapAreaLeaf(CephContext* cct) : BitMapAreaIN(cct) { }
-  BitMapAreaLeaf(CephContext* cct, int64_t zone_num, int64_t total_blocks);
-  BitMapAreaLeaf(CephContext* cct, int64_t zone_num, int64_t total_blocks,
-		 bool def);
-
-  using BitMapAreaIN::child_check_n_lock;
-  bool child_check_n_lock(BitMapArea *child, int64_t required) override {
-    ceph_abort();
-    return false;
-  }
-
-  bool child_check_n_lock(BitMapZone* child, int64_t required, bool lock);
-
-  int64_t alloc_blocks_int(int64_t num_blocks, int64_t hint, int64_t *start_block);
-  int64_t alloc_blocks_dis_int(int64_t num_blocks, int64_t min_alloc, int64_t hint,
-        int64_t blk_off, ExtentList *block_list) override;  
-  void free_blocks_int(int64_t start_block, int64_t num_blocks) override;
-
-  ~BitMapAreaLeaf() override;
-};
-
-
-typedef enum bmap_alloc_mode {
-  SERIAL = 1,
-  CONCURRENT = 2,
-} bmap_alloc_mode_t;
-
-class BitAllocator:public BitMapAreaIN{
-private:
-  CephContext* const cct;
-  bmap_alloc_mode_t m_alloc_mode;
-  std::mutex m_serial_mutex;
-  pthread_rwlock_t m_rw_lock;
-  BitAllocatorStats *m_stats;
-  bool m_is_stats_on;
-  int64_t m_extra_blocks;
-
-  bool is_stats_on() {
-    return m_is_stats_on;
-  }
-
-  using BitMapArea::child_check_n_lock;
-  bool child_check_n_lock(BitMapArea *child, int64_t required) override;
-  void child_unlock(BitMapArea *child) override;
-
-  void serial_lock();
-  bool try_serial_lock();
-  void serial_unlock();
-  void lock_excl() override;
-  void lock_shared() override;
-  bool try_lock();
-  void unlock() override;
-
-  bool check_input(int64_t num_blocks);
-  bool check_input_dis(int64_t num_blocks);
-  void init_check(int64_t total_blocks, int64_t zone_size_block,
-                 bmap_alloc_mode_t mode, bool def, bool stats_on);
-  int64_t alloc_blocks_dis_work(int64_t num_blocks, int64_t min_alloc, int64_t hint, ExtentList *block_list, bool reserved);
-
-  int64_t alloc_blocks_dis_int(int64_t num_blocks, int64_t min_alloc, 
-           int64_t hint, int64_t area_blk_off, ExtentList *block_list) override;
-
-public:
-  MEMPOOL_CLASS_HELPERS();
-
-  BitAllocator(CephContext* cct, int64_t total_blocks,
-	       int64_t zone_size_block, bmap_alloc_mode_t mode);
-  BitAllocator(CephContext* cct, int64_t total_blocks, int64_t zone_size_block,
-	       bmap_alloc_mode_t mode, bool def);
-  BitAllocator(CephContext* cct, int64_t total_blocks, int64_t zone_size_block,
-               bmap_alloc_mode_t mode, bool def, bool stats_on);
-  ~BitAllocator() override;
-  void shutdown() override;
-  using BitMapAreaIN::alloc_blocks_dis; //Wait version
-
-  void free_blocks(int64_t start_block, int64_t num_blocks) override;
-  void set_blocks_used(int64_t start_block, int64_t num_blocks) override;
-  void unreserve_blocks(int64_t blocks);
-
-  int64_t alloc_blocks_dis_res(int64_t num_blocks, int64_t min_alloc, int64_t hint, ExtentList *block_list);
-
-  void free_blocks_dis(int64_t num_blocks, ExtentList *block_list);
-  bool is_allocated_dis(ExtentList *blocks, int64_t num_blocks);
-
-  int64_t total_blocks() const {
-    return m_total_blocks - m_extra_blocks;
-  }
-  int64_t get_used_blocks() override {
-    return (BitMapAreaIN::get_used_blocks_adj() - m_extra_blocks);
-  }
-
-  BitAllocatorStats *get_stats() {
-      return m_stats;
-  }
-  void dump();
-};
-
-#endif //End of file