mirror of
https://github.com/netbirdio/gvisor.git
synced 2026-05-22 17:12:49 -07:00
Sergey Madaminov
05e7c2fceb
Once the user receives a file descriptor from `io_uring_setup()`, it will be used for the subsequent `mmap()` calls. Thus, we need to add support for it in our iouringfs. PiperOrigin-RevId: 477318038
72 lines
1.7 KiB
Go
72 lines
1.7 KiB
Go
// Copyright 2022 The gVisor Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package hostarch
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import (
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"fmt"
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"math"
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"testing"
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)
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func TestCacheLineRoundUp(t *testing.T) {
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tests := []struct {
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input uint64
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output uint64
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}{
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{0, 0},
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{63, 64},
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{64, 64},
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{65, 128},
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{66, 128},
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{99, 128},
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{127, 128},
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{128, 128},
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{129, 192},
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{math.MaxUint32, math.MaxUint32 + 1},
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}
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for i, tt := range tests {
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t.Run(fmt.Sprintf("case-%d", i), func(t *testing.T) {
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s, ok := CacheLineRoundUp(tt.input)
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if s != tt.output {
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t.Errorf("Expected %d, got %d", tt.output, s)
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}
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if !ok {
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t.Errorf("Expected no wrap around, got %t. Input %d, expected %d", ok, tt.input, tt.output)
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}
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})
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}
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}
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func TestCacheLineRoundUpWrapAround(t *testing.T) {
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tests := []struct {
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input uint64
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output uint64
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}{
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{math.MaxUint64 - 1, 0},
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{math.MaxUint64, 0},
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}
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for i, tt := range tests {
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t.Run(fmt.Sprintf("case-%d", i), func(t *testing.T) {
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s, ok := CacheLineRoundUp(tt.input)
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if s != tt.output {
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t.Errorf("Expected %d, got %d", tt.output, s)
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}
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if ok {
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t.Errorf("Expected wrap around, got %t. Input %d, expected %d", ok, tt.input, tt.output)
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}
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})
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}
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}
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