| // 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 ( |
| "fmt" |
| |
| "android.googlesource.com/platform/tools/gpu/binary" |
| "android.googlesource.com/platform/tools/gpu/database" |
| "android.googlesource.com/platform/tools/gpu/log" |
| "android.googlesource.com/platform/tools/gpu/service/path" |
| ) |
| |
| // Nullptr is a zero-address pointer in the application pool. |
| var Nullptr = Pointer{Pool: ApplicationPool} |
| |
| // Pointer is the type representing a memory pointer. |
| type Pointer struct { |
| binary.Generate |
| Address uint64 // The memory address. |
| Pool PoolID // The memory pool. |
| } |
| |
| // Offset returns the pointer offset by n bytes. |
| func (p Pointer) Offset(n uint64) Pointer { |
| return Pointer{Address: p.Address + n, Pool: p.Pool} |
| } |
| |
| // Range returns a Range of size s with the base of this pointer. |
| func (p Pointer) Range(s uint64) Range { |
| return Range{Base: p.Address, Size: s} |
| } |
| |
| func (p Pointer) String() string { |
| return fmt.Sprintf("0x%.16x@%d", uint64(p.Address), p.Pool) |
| } |
| |
| // Link return the path to the memory pointed-to by p. |
| func (p Pointer) Link(pth path.Path, d database.Database, l log.Logger) (path.Path, error) { |
| if a := path.FindAtom(pth); a != nil { |
| return a.MemoryAfter(uint64(p.Pool), p.Address, 0), nil |
| } |
| return nil, nil |
| } |