initial code repo

[stor4nfv.git] / src / ceph / src / os / bluestore / BitMapAllocator.h

diff --git a/src/ceph/src/os/bluestore/BitMapAllocator.h b/src/ceph/src/os/bluestore/BitMapAllocator.h
new file mode 100644 (file)
index 0000000..a39751d
--- /dev/null
+++ b/src/ceph/src/os/bluestore/BitMapAllocator.h
@@ -0,0 +1,51 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#ifndef CEPH_OS_BLUESTORE_BITMAPALLOCATOR_H
+#define CEPH_OS_BLUESTORE_BITMAPALLOCATOR_H
+
+#include <mutex>
+
+#include "Allocator.h"
+#include "BitAllocator.h"
+#include "include/btree_interval_set.h"
+
+class BitMapAllocator : public Allocator {
+  CephContext* cct;
+
+  int64_t m_block_size;
+  int64_t m_total_size;
+
+  BitAllocator *m_bit_alloc; // Bit allocator instance
+
+  void insert_free(uint64_t offset, uint64_t len);
+
+  int64_t allocate_dis(
+    uint64_t want_size, uint64_t alloc_unit, uint64_t max_alloc_size,
+    int64_t hint, mempool::bluestore_alloc::vector<AllocExtent> *extents);
+
+public:
+  BitMapAllocator(CephContext* cct, int64_t device_size, int64_t block_size);
+  ~BitMapAllocator() override;
+
+  int reserve(uint64_t need) override;
+  void unreserve(uint64_t unused) override;
+
+  int64_t allocate(
+    uint64_t want_size, uint64_t alloc_unit, uint64_t max_alloc_size,
+    int64_t hint, mempool::bluestore_alloc::vector<AllocExtent> *extents) override;
+
+  void release(
+    uint64_t offset, uint64_t length) override;
+
+  uint64_t get_free() override;
+
+  void dump() 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