Adding upstream version 14.2.21.upstream/14.2.21upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 65 insertions, 0 deletions

diff --git a/src/os/bluestore/StupidAllocator.h b/src/os/bluestore/StupidAllocator.h
new file mode 100644
index 00000000..d9c4a447
--- /dev/null
+++ b/src/os/bluestore/StupidAllocator.h
@@ -0,0 +1,65 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#ifndef CEPH_OS_BLUESTORE_STUPIDALLOCATOR_H
+#define CEPH_OS_BLUESTORE_STUPIDALLOCATOR_H
+
+#include <mutex>
+
+#include "Allocator.h"
+#include "include/btree_map.h"
+#include "include/interval_set.h"
+#include "os/bluestore/bluestore_types.h"
+#include "include/mempool.h"
+#include "common/ceph_mutex.h"
+
+class StupidAllocator : public Allocator {
+  CephContext* cct;
+  ceph::mutex lock = ceph::make_mutex("StupidAllocator::lock");
+
+  int64_t num_free;     ///< total bytes in freelist
+  int64_t block_size;
+
+  typedef mempool::bluestore_alloc::pool_allocator<
+    pair<const uint64_t,uint64_t>> allocator_t;
+  typedef btree::btree_map<uint64_t,uint64_t,std::less<uint64_t>,allocator_t> interval_set_map_t;
+  typedef interval_set<uint64_t,interval_set_map_t> interval_set_t;
+  std::vector<interval_set_t> free;  ///< leading-edge copy
+
+  uint64_t last_alloc;
+
+  unsigned _choose_bin(uint64_t len);
+  void _insert_free(uint64_t offset, uint64_t len);
+
+  uint64_t _aligned_len(
+    interval_set_t::iterator p,
+    uint64_t alloc_unit);
+
+public:
+  StupidAllocator(CephContext* cct, const std::string& name, int64_t block_size);
+  ~StupidAllocator() override;
+
+  int64_t allocate(
+    uint64_t want_size, uint64_t alloc_unit, uint64_t max_alloc_size,
+    int64_t hint, PExtentVector *extents) override;
+
+  int64_t allocate_int(
+    uint64_t want_size, uint64_t alloc_unit, int64_t hint,
+    uint64_t *offset, uint32_t *length);
+
+  void release(
+    const interval_set<uint64_t>& release_set) override;
+
+  uint64_t get_free() override;
+  double get_fragmentation() override;
+
+  void dump() override;
+  void dump(std::function<void(uint64_t offset, uint64_t length)> notify) override;
+
+  void init_add_free(uint64_t offset, uint64_t length) override;
+  void init_rm_free(uint64_t offset, uint64_t length) override;
+
+  void shutdown() override;
+};
+
+#endif