github.com/matrixorigin/matrixone@v1.2.0/pkg/fileservice/memorycache/data.go (about)

     1  // Copyright 2022 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 memorycache
    16  
    17  import (
    18  	"sync/atomic"
    19  )
    20  
    21  func (d *Data) Bytes() []byte {
    22  	return d.Buf()
    23  }
    24  
    25  // Buf returns the underlying buffer of the Data
    26  func (d *Data) Buf() []byte {
    27  	if d == nil {
    28  		return nil
    29  	}
    30  	return d.buf
    31  }
    32  
    33  func (d *Data) Truncate(n int) *Data {
    34  	d.buf = d.buf[:n]
    35  	return d
    36  }
    37  
    38  func (d *Data) refs() int32 {
    39  	return d.ref.refs()
    40  }
    41  
    42  func (d *Data) acquire() {
    43  	d.ref.acquire()
    44  }
    45  
    46  func (d *Data) release(size *atomic.Int64) {
    47  	if d != nil && d.ref.release() {
    48  		d.free(size)
    49  	}
    50  }