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bitmap.go
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bitmap.go
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/*
* Copyright 2022 ByteDance Inc.
*
* Licensed 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 decoder
import (
`sync`
`github.com/cloudwego/frugal/internal/atm/hir`
)
const (
MaxField = 65536
MaxBitmap = MaxField / 64
)
var (
bitmapPool sync.Pool
)
var (
F_newFieldBitmap = hir.RegisterGCall(newFieldBitmap, emu_gcall_newFieldBitmap)
F_FieldBitmap_Free = hir.RegisterGCall((*FieldBitmap).Free, emu_gcall_FieldBitmap_Free)
)
type (
FieldBitmap [MaxBitmap]int64
)
func newFieldBitmap() *FieldBitmap {
if v := bitmapPool.Get(); v != nil {
return v.(*FieldBitmap)
} else {
return new(FieldBitmap)
}
}
func (self *FieldBitmap) Free() {
bitmapPool.Put(self)
}
func (self *FieldBitmap) Clear() {
*self = FieldBitmap{}
}
func (self *FieldBitmap) Append(i int) {
if i < MaxField {
self[i / 64] |= 1 << (i % 64)
} else {
panic("field index too large")
}
}