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Diffstat (limited to 'pkg/sentry/pgalloc/pgalloc_test.go')
-rw-r--r--pkg/sentry/pgalloc/pgalloc_test.go168
1 files changed, 0 insertions, 168 deletions
diff --git a/pkg/sentry/pgalloc/pgalloc_test.go b/pkg/sentry/pgalloc/pgalloc_test.go
deleted file mode 100644
index 428e6a859..000000000
--- a/pkg/sentry/pgalloc/pgalloc_test.go
+++ /dev/null
@@ -1,168 +0,0 @@
-// Copyright 2018 The gVisor Authors.
-//
-// 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 pgalloc
-
-import (
- "testing"
-
- "gvisor.dev/gvisor/pkg/sentry/usermem"
-)
-
-const (
- page = usermem.PageSize
- hugepage = usermem.HugePageSize
-)
-
-func TestFindUnallocatedRange(t *testing.T) {
- for _, test := range []struct {
- desc string
- usage *usageSegmentDataSlices
- start uint64
- length uint64
- alignment uint64
- unallocated uint64
- minUnallocated uint64
- }{
- {
- desc: "Initial allocation succeeds",
- usage: &usageSegmentDataSlices{},
- start: 0,
- length: page,
- alignment: page,
- unallocated: 0,
- minUnallocated: 0,
- },
- {
- desc: "Allocation begins at start of file",
- usage: &usageSegmentDataSlices{
- Start: []uint64{page},
- End: []uint64{2 * page},
- Values: []usageInfo{{refs: 1}},
- },
- start: 0,
- length: page,
- alignment: page,
- unallocated: 0,
- minUnallocated: 0,
- },
- {
- desc: "In-use frames are not allocatable",
- usage: &usageSegmentDataSlices{
- Start: []uint64{0, page},
- End: []uint64{page, 2 * page},
- Values: []usageInfo{{refs: 1}, {refs: 2}},
- },
- start: 0,
- length: page,
- alignment: page,
- unallocated: 2 * page,
- minUnallocated: 2 * page,
- },
- {
- desc: "Reclaimable frames are not allocatable",
- usage: &usageSegmentDataSlices{
- Start: []uint64{0, page, 2 * page},
- End: []uint64{page, 2 * page, 3 * page},
- Values: []usageInfo{{refs: 1}, {refs: 0}, {refs: 1}},
- },
- start: 0,
- length: page,
- alignment: page,
- unallocated: 3 * page,
- minUnallocated: 3 * page,
- },
- {
- desc: "Gaps between in-use frames are allocatable",
- usage: &usageSegmentDataSlices{
- Start: []uint64{0, 2 * page},
- End: []uint64{page, 3 * page},
- Values: []usageInfo{{refs: 1}, {refs: 1}},
- },
- start: 0,
- length: page,
- alignment: page,
- unallocated: page,
- minUnallocated: page,
- },
- {
- desc: "Inadequately-sized gaps are rejected",
- usage: &usageSegmentDataSlices{
- Start: []uint64{0, 2 * page},
- End: []uint64{page, 3 * page},
- Values: []usageInfo{{refs: 1}, {refs: 1}},
- },
- start: 0,
- length: 2 * page,
- alignment: page,
- unallocated: 3 * page,
- minUnallocated: page,
- },
- {
- desc: "Hugepage alignment is honored",
- usage: &usageSegmentDataSlices{
- Start: []uint64{0, hugepage + page},
- // Hugepage-sized gap here that shouldn't be allocated from
- // since it's incorrectly aligned.
- End: []uint64{page, hugepage + 2*page},
- Values: []usageInfo{{refs: 1}, {refs: 1}},
- },
- start: 0,
- length: hugepage,
- alignment: hugepage,
- unallocated: 2 * hugepage,
- minUnallocated: page,
- },
- {
- desc: "Pages before start ignored",
- usage: &usageSegmentDataSlices{
- Start: []uint64{page, 3 * page},
- End: []uint64{2 * page, 4 * page},
- Values: []usageInfo{{refs: 1}, {refs: 2}},
- },
- start: page,
- length: page,
- alignment: page,
- unallocated: 2 * page,
- minUnallocated: 2 * page,
- },
- {
- desc: "start may be in the middle of segment",
- usage: &usageSegmentDataSlices{
- Start: []uint64{0, 3 * page},
- End: []uint64{2 * page, 4 * page},
- Values: []usageInfo{{refs: 1}, {refs: 2}},
- },
- start: page,
- length: page,
- alignment: page,
- unallocated: 2 * page,
- minUnallocated: 2 * page,
- },
- } {
- t.Run(test.desc, func(t *testing.T) {
- var usage usageSet
- if err := usage.ImportSortedSlices(test.usage); err != nil {
- t.Fatalf("Failed to initialize usage from %v: %v", test.usage, err)
- }
- unallocated, minUnallocated := findUnallocatedRange(&usage, test.start, test.length, test.alignment)
- if unallocated != test.unallocated {
- t.Errorf("findUnallocatedRange(%v, %x, %x, %x): got unallocated %x, wanted %x", test.usage, test.start, test.length, test.alignment, unallocated, test.unallocated)
- }
- if minUnallocated != test.minUnallocated {
- t.Errorf("findUnallocatedRange(%v, %x, %x, %x): got minUnallocated %x, wanted %x", test.usage, test.start, test.length, test.alignment, minUnallocated, test.minUnallocated)
- }
- })
- }
-}