| // Copyright (C) 2015 The Android Open Source Project |
| // |
| // 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 memory |
| |
| import "android.googlesource.com/platform/tools/gpu/interval" |
| |
| type RangeList []Range |
| |
| // Length returns the number of ranges in the RangeList. |
| func (l *RangeList) Length() int { |
| return len(*l) |
| } |
| |
| // GetSpan returns the span of the range with the specified index in the |
| // RangeList. |
| func (l *RangeList) GetSpan(index int) interval.U64Span { |
| return (*l)[index].Span() |
| } |
| |
| // SetSpan adjusts the range of the span with the specified index in the |
| // RangeList. |
| func (l *RangeList) SetSpan(index int, span interval.U64Span) { |
| (*l)[index] = Range{ |
| Base: span.Start, |
| Size: span.End - span.Start, |
| } |
| } |
| |
| // Copy performs a copy of ranges within the RangeList. |
| func (l *RangeList) Copy(to, from, count int) { |
| copy((*l)[to:to+count], (*l)[from:from+count]) |
| } |
| |
| // Resize resizes the RangeList to the specified length. |
| func (l *RangeList) Resize(length int) { |
| if cap(*l) > length { |
| *l = (*l)[:length] |
| } else { |
| old := *l |
| capacity := cap(*l) * 2 |
| if capacity < length { |
| capacity = length |
| } |
| *l = make(RangeList, length, capacity) |
| copy(*l, old) |
| } |
| } |