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transform_early_terminator.go
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transform_early_terminator.go
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// Copyright (C) 2020 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 terminator
import (
"context"
"github.com/google/gapid/gapis/api"
"github.com/google/gapid/gapis/api/transform"
)
var _ Terminator = &earlyTerminator{}
type earlyTerminator struct {
lastID api.CmdID
terminated bool
}
// NewEarlyTerminator returns a Terminator that will consume all commands
// after the last command passed to Add.
func NewEarlyTerminator() Terminator {
return &earlyTerminator{
lastID: 0,
terminated: false,
}
}
func (earlyTerminatorTransform *earlyTerminator) Add(ctx context.Context, id api.CmdID, idx api.SubCmdIdx) error {
if id > earlyTerminatorTransform.lastID {
earlyTerminatorTransform.lastID = id
}
return nil
}
func (earlyTerminatorTransform *earlyTerminator) RequiresAccurateState() bool {
return false
}
func (earlyTerminatorTransform *earlyTerminator) RequiresInnerStateMutation() bool {
return false
}
func (earlyTerminatorTransform *earlyTerminator) SetInnerStateMutationFunction(mutator transform.StateMutator) {
// This transform do not require inner state mutation
}
func (earlyTerminatorTransform *earlyTerminator) BeginTransform(ctx context.Context, inputState *api.GlobalState) error {
return nil
}
func (earlyTerminatorTransform *earlyTerminator) EndTransform(ctx context.Context, inputState *api.GlobalState) ([]api.Cmd, error) {
return nil, nil
}
func (earlyTerminatorTransform *earlyTerminator) TransformCommand(ctx context.Context, id transform.CommandID, inputCommands []api.Cmd, inputState *api.GlobalState) ([]api.Cmd, error) {
if earlyTerminatorTransform.terminated {
return nil, nil
}
if id.GetID() == earlyTerminatorTransform.lastID {
earlyTerminatorTransform.terminated = true
}
return inputCommands, nil
}
func (earlyTerminatorTransform *earlyTerminator) ClearTransformResources(ctx context.Context) {
// No resource allocated
}