mirror of
https://github.com/netbirdio/gvisor.git
synced 2026-05-22 17:12:49 -07:00
107 lines
2.7 KiB
Go
107 lines
2.7 KiB
Go
// Copyright 2020 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 escape contains test cases for escape analysis.
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package escape
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import (
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"gvisor.dev/gvisor/pkg/hostarch"
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"gvisor.dev/gvisor/pkg/marshal"
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"gvisor.dev/gvisor/tools/go_marshal/test"
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)
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// dummyCopyContext implements marshal.CopyContext.
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type dummyCopyContext struct {
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}
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func (*dummyCopyContext) CopyScratchBuffer(size int) []byte {
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return make([]byte, size)
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}
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func (*dummyCopyContext) CopyOutBytes(addr hostarch.Addr, b []byte) (int, error) {
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return len(b), nil
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}
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func (*dummyCopyContext) CopyInBytes(addr hostarch.Addr, b []byte) (int, error) {
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return len(b), nil
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}
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func (t *dummyCopyContext) MarshalBytes(addr hostarch.Addr, marshallable marshal.Marshallable) {
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buf := t.CopyScratchBuffer(marshallable.SizeBytes())
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marshallable.MarshalBytes(buf)
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t.CopyOutBytes(addr, buf)
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}
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func (t *dummyCopyContext) MarshalUnsafe(addr hostarch.Addr, marshallable marshal.Marshallable) {
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buf := t.CopyScratchBuffer(marshallable.SizeBytes())
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marshallable.MarshalUnsafe(buf)
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t.CopyOutBytes(addr, buf)
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}
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// +checkescape:hard
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//
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//go:nosplit
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func doCopyIn(t *dummyCopyContext) {
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var stat test.Stat
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stat.CopyIn(t, hostarch.Addr(0xf000ba12))
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}
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// +checkescape:hard
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//
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//go:nosplit
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func doCopyOut(t *dummyCopyContext) {
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var stat test.Stat
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stat.CopyOut(t, hostarch.Addr(0xf000ba12))
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}
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// +mustescape:builtin
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// +mustescape:stack
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//
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//go:nosplit
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func doMarshalBytesDirect(t *dummyCopyContext) {
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var stat test.Stat
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buf := t.CopyScratchBuffer(stat.SizeBytes())
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stat.MarshalBytes(buf)
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t.CopyOutBytes(hostarch.Addr(0xf000ba12), buf)
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}
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// +mustescape:builtin
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// +mustescape:stack
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//
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//go:nosplit
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func doMarshalUnsafeDirect(t *dummyCopyContext) {
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var stat test.Stat
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buf := t.CopyScratchBuffer(stat.SizeBytes())
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stat.MarshalUnsafe(buf)
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t.CopyOutBytes(hostarch.Addr(0xf000ba12), buf)
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}
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// +mustescape:local,heap
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// +mustescape:stack
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//
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//go:nosplit
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func doMarshalBytesViaMarshallable(t *dummyCopyContext) {
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var stat test.Stat
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t.MarshalBytes(hostarch.Addr(0xf000ba12), &stat)
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}
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// +mustescape:local,heap
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// +mustescape:stack
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//
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//go:nosplit
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func doMarshalUnsafeViaMarshallable(t *dummyCopyContext) {
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var stat test.Stat
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t.MarshalUnsafe(hostarch.Addr(0xf000ba12), &stat)
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}
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