| // Copyright (C) 2015 The Android Open Source Project |
| // |
| // 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 replay |
| |
| import ( |
| "fmt" |
| "sync" |
| |
| "android.googlesource.com/platform/tools/gpu/database" |
| "android.googlesource.com/platform/tools/gpu/log" |
| ) |
| |
| // Manager is used discover replay devices and to send replay requests to those |
| // discovered devices. |
| type Manager struct { |
| database database.Database |
| discovery *discovery |
| batchers map[batcherContext]*batcher |
| mutex sync.Mutex // guards batchers |
| logger log.Logger |
| } |
| |
| func (m *Manager) getBatchStream(ctx batcherContext) (chan<- Request, error) { |
| m.mutex.Lock() |
| defer m.mutex.Unlock() |
| |
| // TODO: This accumulates batchers with running go-routines forever. |
| // Rework to free the batcher after execution. |
| b, found := m.batchers[ctx] |
| if !found { |
| device := m.discovery.device(ctx.Device) |
| if device == nil { |
| return nil, fmt.Errorf("Unknown device %v", ctx.Device) |
| } |
| b = &batcher{ |
| context: ctx, |
| feed: make(chan Request, 8), |
| database: m.database, |
| device: device, |
| logger: m.logger, |
| } |
| m.batchers[ctx] = b |
| go b.run() |
| } |
| return b.feed, nil |
| } |
| |
| // New returns a new Manager instance using the database db and logger l. |
| func New(d database.Database, l log.Logger) *Manager { |
| return &Manager{ |
| database: d, |
| discovery: newDiscovery(d, l), |
| batchers: make(map[batcherContext]*batcher), |
| logger: l, |
| } |
| } |
| |
| // Replay requests that req is to be performed on the device described by ctx, |
| // using the capture described by ctx. Replay is asynchronous, and the replay |
| // may take some considerable time before it is executed. Replay requests made |
| // with configs that have equality (==) will likely be batched into the same |
| // replay pass. |
| func (m *Manager) Replay(ctx *Context, cfg Config, req Request, generator Generator) error { |
| batch, err := m.getBatchStream(batcherContext{ |
| Context: *ctx, |
| Generator: generator, |
| Config: cfg, |
| }) |
| if err == nil { |
| batch <- req |
| } |
| return err |
| } |
| |
| // DeviceIDs returns the list of devices that have been discovered. |
| func (m *Manager) Devices() []Device { |
| return m.discovery.getDevices() |
| } |