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cmd_observations.go
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cmd_observations.go
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// Copyright (C) 2017 Google Inc.
//
// 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 api
import (
"bytes"
"context"
"fmt"
"github.com/google/gapid/core/data/id"
"github.com/google/gapid/core/data/protoconv"
"github.com/google/gapid/gapis/database"
"github.com/google/gapid/gapis/memory"
"github.com/google/gapid/gapis/memory/memory_pb"
)
// CmdObservations is a collection of reads and write observations performed by an
// command.
type CmdObservations struct {
Reads []CmdObservation
Writes []CmdObservation
}
func (o *CmdObservations) String() string {
return fmt.Sprintf("Reads: %v, Writes: %v", o.Reads, o.Writes)
}
// AddRead appends the read to the list of observations.
func (o *CmdObservations) AddRead(rng memory.Range, id id.ID) {
o.Reads = append(o.Reads, CmdObservation{Range: rng, ID: id})
}
// AddWrite appends the write to the list of observations.
func (o *CmdObservations) AddWrite(rng memory.Range, id id.ID) {
o.Writes = append(o.Writes, CmdObservation{Range: rng, ID: id})
}
// ApplyReads applies all the observed reads to memory pool p.
// This is a no-op when called when o is nil.
func (o *CmdObservations) ApplyReads(p *memory.Pool) {
if o != nil {
for _, r := range o.Reads {
p.Write(r.Range.Base, memory.Resource(r.ID, r.Range.Size))
}
}
}
// ApplyWrites applies all the observed writes to the memory pool p.
// This is a no-op when called when o is nil.
func (o *CmdObservations) ApplyWrites(p *memory.Pool) {
if o != nil {
for _, w := range o.Writes {
p.Write(w.Range.Base, memory.Resource(w.ID, w.Range.Size))
}
}
}
// DataString returns a string describing all reads/writes and their raw data.
func (o *CmdObservations) DataString(ctx context.Context) string {
var buf bytes.Buffer
for _, read := range o.Reads {
buf.WriteString(fmt.Sprintf("[read] %v\n", read))
if data, err := database.Resolve(ctx, read.ID); err == nil {
buf.WriteString(fmt.Sprintf("[data] %v\n", data))
} else {
buf.WriteString(fmt.Sprintf("[data] failed: %v\n", err))
}
}
for _, write := range o.Writes {
buf.WriteString(fmt.Sprintf("[write] %v\n", write))
if data, err := database.Resolve(ctx, write.ID); err == nil {
buf.WriteString(fmt.Sprintf("[data] %v\n", data))
} else {
buf.WriteString(fmt.Sprintf("[data] failed: %v\n", err))
}
}
return buf.String()
}
// CmdObservation represents a single read or write observation made by an
// command.
type CmdObservation struct {
Pool memory.PoolID // The pool in which the memory was observed.
Range memory.Range // Memory range that was observed.
ID id.ID // The resource identifier of the observed data.
}
func (o CmdObservation) String() string {
return fmt.Sprintf("{Range: %v, ID: %v}", o.Range, o.ID)
}
func init() {
protoconv.Register(
func(ctx context.Context, a CmdObservation) (*memory_pb.Observation, error) {
resIndex, err := id.GetRemapper(ctx).RemapID(ctx, a.ID)
if err != nil {
return nil, err
}
return &memory_pb.Observation{
Pool: uint32(a.Pool),
Base: a.Range.Base,
Size: a.Range.Size,
ResIndex: resIndex,
}, nil
},
func(ctx context.Context, a *memory_pb.Observation) (CmdObservation, error) {
id, err := id.GetRemapper(ctx).RemapIndex(ctx, a.ResIndex)
if err != nil {
return CmdObservation{}, err
}
o := CmdObservation{}
o.Pool = memory.PoolID(a.Pool)
o.Range.Base = a.Base
o.Range.Size = a.Size
o.ID = id
return o, nil
},
)
}