[FEAT MERGE] Implement Resource Throttle

src/share/allocator/ob_tx_data_allocator.h

@@ -0,0 +1,63 @@
+/**
+ * Copyright (c) 2021 OceanBase
+ * OceanBase CE is licensed under Mulan PubL v2.
+ * You can use this software according to the terms and conditions of the Mulan PubL v2.
+ * You may obtain a copy of Mulan PubL v2 at:
+ *          http://license.coscl.org.cn/MulanPubL-2.0
+ * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
+ * EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
+ * MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
+ * See the Mulan PubL v2 for more details.
+ */
+
+#ifndef OCEANBASE_ALLOCATOR_OB_TX_DATA_ALLOCATOR_H_
+#define OCEANBASE_ALLOCATOR_OB_TX_DATA_ALLOCATOR_H_
+
+#include "lib/allocator/ob_slice_alloc.h"
+#include "share/ob_delegate.h"
+#include "share/throttle/ob_share_throttle_define.h"
+
+namespace oceanbase {
+namespace share {
+
+class ObTenantTxDataAllocator {
+public:
+  using SliceAllocator = ObSliceAlloc;
+
+  // define some default value
+  static const int64_t TX_DATA_LIMIT_PERCENTAGE = 20;
+  static const int64_t TX_DATA_THROTTLE_TRIGGER_PERCENTAGE = 60;
+  static const int64_t TX_DATA_THROTTLE_MAX_DURATION = 2LL * 60LL * 60LL * 1000LL * 1000LL;  // 2 hours
+  static const int64_t ALLOC_TX_DATA_MAX_CONCURRENCY = 32;
+  static const uint32_t THROTTLE_TX_DATA_INTERVAL = 20 * 1000; // 20ms
+
+  // The tx data memtable will trigger a freeze if its memory use is more than 2%
+  static constexpr double TX_DATA_FREEZE_TRIGGER_PERCENTAGE = 2;
+
+public:
+  DEFINE_CUSTOM_FUNC_FOR_THROTTLE(TxData);
+
+public:
+  ObTenantTxDataAllocator()
+      : is_inited_(false), throttle_tool_(nullptr), block_alloc_(), slice_allocator_() {}
+  ~ObTenantTxDataAllocator() { reset(); }
+  int init(const char* label);
+  void *alloc(const bool enable_throttle = true, const int64_t abs_expire_time = 0);
+  void reset();
+  int64_t hold() const { return block_alloc_.hold(); }
+
+  DELEGATE_WITH_RET(slice_allocator_, free, void);
+
+  TO_STRING_KV(K(is_inited_), KP(throttle_tool_), KP(&block_alloc_), KP(&slice_allocator_));
+
+private:
+  bool is_inited_;
+  TxShareThrottleTool *throttle_tool_;
+  common::ObBlockAllocMgr block_alloc_;
+  SliceAllocator slice_allocator_;
+};
+
+}  // namespace share
+}  // namespace oceanbase
+
+#endif