93 lines
2.8 KiB
C++
93 lines
2.8 KiB
C++
/**
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* Copyright (c) 2021 OceanBase
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* OceanBase CE is licensed under Mulan PubL v2.
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* You can use this software according to the terms and conditions of the Mulan PubL v2.
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* You may obtain a copy of Mulan PubL v2 at:
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* http://license.coscl.org.cn/MulanPubL-2.0
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* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
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* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
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* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
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* See the Mulan PubL v2 for more details.
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*/
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#ifndef OCEANBASE_SQL_PLAN_CACHE_OB_PS_SQL_UTILS_H_
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#define OCEANBASE_SQL_PLAN_CACHE_OB_PS_SQL_UTILS_H_
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#include "lib/oblog/ob_log_module.h"
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#include "lib/utility/ob_macro_utils.h"
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#include "lib/utility/ob_print_utils.h"
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#include "common/data_buffer.h"
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#include "sql/parser/parse_node.h"
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#include "lib/container/ob_iarray.h"
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#include "lib/container/ob_bit_set.h"
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namespace oceanbase
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{
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namespace common
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{
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class ObIAllocator;
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class ObString;
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}
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namespace sql
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{
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class ObPsSqlUtils
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{
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public:
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template<typename T>
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static int alloc_new_var(common::ObIAllocator &allocator, const T &t, T *&new_t);
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static int deep_copy_str(common::ObIAllocator &allocator,
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const common::ObString &src,
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common::ObString &dst);
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// 获取某个ObPsStmtItem/ObPsStmtInfo对象占用内存
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template<typename T>
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static int get_var_mem_total(const T &t, int64_t &size);
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};
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template<typename T>
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int ObPsSqlUtils::alloc_new_var(common::ObIAllocator &allocator, const T &t, T *&new_t)
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{
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int ret = common::OB_SUCCESS;
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new_t = NULL;
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common::ObDataBuffer *data_buf = NULL;
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int64_t cv_size = 0;
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if (OB_FAIL(t.get_convert_size(cv_size))) {
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SQL_PC_LOG(WARN, "get_convert_size failed", K(ret));
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} else {
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const int64_t size = cv_size + sizeof(common::ObDataBuffer);
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char *buf = static_cast<char *>(allocator.alloc(size));
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if (OB_ISNULL(buf)) {
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ret = common::OB_ALLOCATE_MEMORY_FAILED;
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SQL_PC_LOG(WARN, "failed to alloc memory");
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} else {
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data_buf = new (buf + sizeof(T)) common::ObDataBuffer(buf + sizeof(T) + sizeof(common::ObDataBuffer),
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size - sizeof(T) - sizeof(common::ObDataBuffer));
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new_t = new (buf) T(data_buf, &allocator);
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if (OB_FAIL(new_t->deep_copy(t))) {
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SQL_PC_LOG(WARN, "deep copy failed", K(ret), K(cv_size));
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}
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}
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}
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return ret;
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}
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template<typename T>
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int ObPsSqlUtils::get_var_mem_total(const T &t, int64_t &size)
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{
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int ret = common::OB_SUCCESS;
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size = 0;
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if (OB_FAIL(t.get_convert_size(size))) {
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SQL_PC_LOG(WARN, "get_convert_size failed", K(ret));
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} else {
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size += sizeof(common::ObDataBuffer);
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}
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return ret;
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}
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} //end of sql
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} //end of oceanbase
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#endif //OCEANBASE_SQL_PLAN_CACHE_OB_PS_SQL_UTILS_H_
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