github.com/matrixorigin/matrixone@v1.2.0/pkg/sql/plan/function/func_builtin_serial.go (about)

     1  // Copyright 2024 Matrix Origin
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //      http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package function
    16  
    17  import (
    18  	"github.com/matrixorigin/matrixone/pkg/common/mpool"
    19  	"github.com/matrixorigin/matrixone/pkg/container/types"
    20  )
    21  
    22  type opSerial struct {
    23  	ps []*types.Packer
    24  }
    25  
    26  func newOpSerial() *opSerial {
    27  	return &opSerial{
    28  		ps: make([]*types.Packer, 0),
    29  	}
    30  }
    31  
    32  func (op *opSerial) tryExpand(length int, mp *mpool.MPool) {
    33  	if len(op.ps) < length {
    34  		// close the current packer array
    35  		for _, p := range op.ps {
    36  			p.FreeMem()
    37  		}
    38  
    39  		// create a new packer array with the new length
    40  		op.ps = types.NewPackerArray(length, mp)
    41  	}
    42  
    43  	for _, p := range op.ps {
    44  		p.Reset()
    45  	}
    46  }
    47  
    48  func (op *opSerial) Close() error {
    49  	if op.ps == nil {
    50  		return nil
    51  	}
    52  
    53  	for _, p := range op.ps {
    54  		p.FreeMem()
    55  	}
    56  	return nil
    57  }