131 lines
3.3 KiB
Go
131 lines
3.3 KiB
Go
// Copyright 2018 Google LLC
|
|
//
|
|
// 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 ashmem
|
|
|
|
import (
|
|
"testing"
|
|
|
|
"gvisor.googlesource.com/gvisor/pkg/abi/linux"
|
|
"gvisor.googlesource.com/gvisor/pkg/sentry/usermem"
|
|
)
|
|
|
|
func TestPinBoard(t *testing.T) {
|
|
pb := NewPinBoard()
|
|
|
|
// Confirm that all pages are pinned.
|
|
if !pb.RangePinnedStatus(RangeFromAshmemPin(linux.AshmemPin{0, 0})) {
|
|
t.Errorf("RangePinnedStatus(all pages) returned false (unpinned) at start.")
|
|
}
|
|
|
|
// Unpin pages [1, 11) (counting from 0)
|
|
pb.UnpinRange(RangeFromAshmemPin(linux.AshmemPin{
|
|
usermem.PageSize,
|
|
usermem.PageSize * 10,
|
|
}))
|
|
|
|
// Confirm that pages [1, 11) are unpinned and that page 0 and pages
|
|
// larger than 10 are pinned.
|
|
pinned := []linux.AshmemPin{
|
|
{
|
|
0,
|
|
usermem.PageSize,
|
|
}, {
|
|
usermem.PageSize * 11,
|
|
0,
|
|
},
|
|
}
|
|
|
|
for _, pin := range pinned {
|
|
if !pb.RangePinnedStatus(RangeFromAshmemPin(pin)) {
|
|
t.Errorf("RangePinnedStatus(AshmemPin{offset (pages): %v, len (pages): %v}) returned false (unpinned).",
|
|
pin.Offset, pin.Len)
|
|
}
|
|
}
|
|
|
|
unpinned := []linux.AshmemPin{
|
|
{
|
|
usermem.PageSize,
|
|
usermem.PageSize * 10,
|
|
},
|
|
}
|
|
|
|
for _, pin := range unpinned {
|
|
if pb.RangePinnedStatus(RangeFromAshmemPin(pin)) {
|
|
t.Errorf("RangePinnedStatus(AshmemPin{offset (pages): %v, len (pages): %v}) returned true (pinned).",
|
|
pin.Offset, pin.Len)
|
|
}
|
|
}
|
|
|
|
// Pin pages [2, 6).
|
|
pb.PinRange(RangeFromAshmemPin(linux.AshmemPin{
|
|
usermem.PageSize * 2,
|
|
usermem.PageSize * 4,
|
|
}))
|
|
|
|
// Confirm that pages 0, [2, 6) and pages larger than 10 are pinned
|
|
// while others remain unpinned.
|
|
pinned = []linux.AshmemPin{
|
|
{
|
|
0,
|
|
usermem.PageSize,
|
|
},
|
|
{
|
|
usermem.PageSize * 2,
|
|
usermem.PageSize * 4,
|
|
},
|
|
{
|
|
usermem.PageSize * 11,
|
|
0,
|
|
},
|
|
}
|
|
|
|
for _, pin := range pinned {
|
|
if !pb.RangePinnedStatus(RangeFromAshmemPin(pin)) {
|
|
t.Errorf("RangePinnedStatus(AshmemPin{offset (pages): %v, len (pages): %v}) returned false (unpinned).",
|
|
pin.Offset, pin.Len)
|
|
}
|
|
}
|
|
|
|
unpinned = []linux.AshmemPin{
|
|
{
|
|
usermem.PageSize,
|
|
usermem.PageSize,
|
|
}, {
|
|
usermem.PageSize * 6,
|
|
usermem.PageSize * 5,
|
|
},
|
|
}
|
|
|
|
for _, pin := range unpinned {
|
|
if pb.RangePinnedStatus(RangeFromAshmemPin(pin)) {
|
|
t.Errorf("RangePinnedStatus(AshmemPin{offset (pages): %v, len (pages): %v}) returned true (pinned).",
|
|
pin.Offset, pin.Len)
|
|
}
|
|
}
|
|
|
|
// Status of a partially pinned range is unpinned.
|
|
if pb.RangePinnedStatus(RangeFromAshmemPin(linux.AshmemPin{0, 0})) {
|
|
t.Errorf("RangePinnedStatus(all pages) returned true (pinned).")
|
|
}
|
|
|
|
// Pin the whole range again.
|
|
pb.PinRange(RangeFromAshmemPin(linux.AshmemPin{0, 0}))
|
|
|
|
// Confirm that all pages are pinned.
|
|
if !pb.RangePinnedStatus(RangeFromAshmemPin(linux.AshmemPin{0, 0})) {
|
|
t.Errorf("RangePinnedStatus(all pages) returned false (unpinned) at start.")
|
|
}
|
|
}
|