| // 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 CheckedAllocator struct { |
| mem Allocator |
| base int |
| sz int |
| } |
| |
| func NewCheckedAllocator(mem Allocator) *CheckedAllocator { |
| return &CheckedAllocator{mem: mem} |
| } |
| |
| func (a *CheckedAllocator) Allocate(size int) []byte { |
| a.sz += size |
| return a.mem.Allocate(size) |
| } |
| |
| func (a *CheckedAllocator) Reallocate(size int, b []byte) []byte { |
| a.sz += size - len(b) |
| return a.mem.Reallocate(size, b) |
| } |
| |
| func (a *CheckedAllocator) Free(b []byte) { |
| a.sz -= len(b) |
| a.mem.Free(b) |
| } |
| |
| type TestingT interface { |
| Errorf(format string, args ...interface{}) |
| Helper() |
| } |
| |
| func (a *CheckedAllocator) AssertSize(t TestingT, sz int) { |
| if a.sz != sz { |
| t.Helper() |
| t.Errorf("invalid memory size exp=%d, got=%d", sz, a.sz) |
| } |
| } |
| |
| type CheckedAllocatorScope struct { |
| alloc *CheckedAllocator |
| sz int |
| } |
| |
| func NewCheckedAllocatorScope(alloc *CheckedAllocator) *CheckedAllocatorScope { |
| return &CheckedAllocatorScope{alloc: alloc, sz: alloc.sz} |
| } |
| |
| func (c *CheckedAllocatorScope) CheckSize(t TestingT) { |
| if c.sz != c.alloc.sz { |
| t.Helper() |
| t.Errorf("invalid memory size exp=%d, got=%d", c.sz, c.alloc.sz) |
| } |
| } |
| |
| var ( |
| _ Allocator = (*CheckedAllocator)(nil) |
| ) |