1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
|
// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements. See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership. The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License. You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package memory
type GoAllocator struct{}
func NewGoAllocator() *GoAllocator { return &GoAllocator{} }
func (a *GoAllocator) Allocate(size int) []byte {
buf := make([]byte, size+alignment) // padding for 64-byte alignment
addr := int(addressOf(buf))
next := roundUpToMultipleOf64(addr)
if addr != next {
shift := next - addr
return buf[shift : size+shift : size+shift]
}
return buf[:size:size]
}
func (a *GoAllocator) Reallocate(size int, b []byte) []byte {
if cap(b) >= size {
return b[:size]
}
newBuf := a.Allocate(size)
copy(newBuf, b)
return newBuf
}
func (a *GoAllocator) Free(b []byte) {}
var (
_ Allocator = (*GoAllocator)(nil)
)
|
