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Add support for taking Perfetto trace to GAPIS.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,95 @@ | ||
| // Copyright (C) 2019 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 adb | ||
|
|
||
| import ( | ||
| "bufio" | ||
| "bytes" | ||
| "context" | ||
| "io" | ||
| "strings" | ||
|
|
||
| "perfetto_pb" | ||
|
|
||
| "github.com/golang/protobuf/proto" | ||
| "github.com/google/gapid/core/app/crash" | ||
| "github.com/google/gapid/core/event/task" | ||
| "github.com/google/gapid/core/log" | ||
| ) | ||
|
|
||
| // StartPerfettoTrace starts a perfetto trace on this device. | ||
| func (b *binding) StartPerfettoTrace(ctx context.Context, config *perfetto_pb.TraceConfig, out string, stop task.Signal) error { | ||
| reader, stdout := io.Pipe() | ||
| data, err := proto.Marshal(config) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| fail := make(chan error, 1) | ||
| crash.Go(func() { | ||
| buf := bufio.NewReader(reader) | ||
| for { | ||
| line, e := buf.ReadString('\n') | ||
| switch e { | ||
| default: | ||
| log.E(ctx, "[perfetto] Read error %v", e) | ||
| fail <- e | ||
| return | ||
| case io.EOF: | ||
| fail <- nil | ||
| return | ||
| case nil: | ||
| log.I(ctx, "[perfetto] %s", strings.TrimSuffix(line, "\n")) | ||
| } | ||
| } | ||
| }) | ||
|
|
||
| process, err := b.Shell("perfetto", "-c", "-", "-o", out). | ||
| Read(bytes.NewReader(data)). | ||
| Capture(stdout, stdout). | ||
| Start(ctx) | ||
| if err != nil { | ||
| stdout.Close() | ||
| return err | ||
| } | ||
|
|
||
| wait := make(chan error, 1) | ||
| crash.Go(func() { | ||
| wait <- process.Wait(ctx) | ||
| }) | ||
|
|
||
| select { | ||
| case err = <-fail: | ||
| return err | ||
| case err = <-wait: | ||
| // Do nothing. | ||
| case <-stop: | ||
| // TODO: figure out why "killall -2 perfetto" doesn't work. | ||
| var pid string | ||
| if pid, err = b.Shell("pidof perfetto").Call(ctx); err != nil { | ||
| break | ||
| } | ||
| if err = b.Shell("kill -2 " + pid).Run(ctx); err != nil { | ||
| break | ||
| } | ||
| err = <-wait | ||
| } | ||
|
|
||
| stdout.Close() | ||
| if err != nil { | ||
| return err | ||
| } | ||
| return <-fail | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,113 @@ | ||
| // Copyright (C) 2019 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 perfetto | ||
|
|
||
| import ( | ||
| "context" | ||
| "fmt" | ||
| "io" | ||
| "os" | ||
| "sync/atomic" | ||
|
|
||
| "perfetto_pb" | ||
|
|
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| "github.com/google/gapid/core/event/task" | ||
| "github.com/google/gapid/core/log" | ||
| "github.com/google/gapid/core/os/android" | ||
| "github.com/google/gapid/core/os/android/adb" | ||
| "github.com/google/gapid/core/os/file" | ||
| "github.com/google/gapid/gapis/service" | ||
| ) | ||
|
|
||
| const ( | ||
| // perfettoTraceFile is the location on the device where we'll ask Perfetto | ||
| // to store the trace data while tracing. | ||
| perfettoTraceFile = "/data/misc/perfetto-traces/gapis-trace" | ||
| ) | ||
|
|
||
| // Process represents a running Perfetto capture. | ||
| type Process struct { | ||
| device adb.Device | ||
| config *perfetto_pb.TraceConfig | ||
| deferred bool | ||
| } | ||
|
|
||
| // Start optional starts an app and sets up a Perfetto trace | ||
| func Start(ctx context.Context, d adb.Device, a *android.ActivityAction, opts *service.TraceOptions) (*Process, error) { | ||
| ctx = log.Enter(ctx, "start") | ||
| if a != nil { | ||
| ctx = log.V{ | ||
| "package": a.Package.Name, | ||
| "activity": a.Activity, | ||
| }.Bind(ctx) | ||
| } | ||
|
|
||
| log.I(ctx, "Turning device screen on") | ||
| if err := d.TurnScreenOn(ctx); err != nil { | ||
| return nil, log.Err(ctx, err, "Couldn't turn device screen on") | ||
| } | ||
|
|
||
| log.I(ctx, "Checking for lockscreen") | ||
| locked, err := d.IsShowingLockscreen(ctx) | ||
| if err != nil { | ||
| log.W(ctx, "Couldn't determine lockscreen state: %v", err) | ||
| } | ||
| if locked { | ||
| return nil, log.Err(ctx, nil, "Cannot trace app on locked device") | ||
| } | ||
|
|
||
| if a != nil { | ||
| if err := d.StartActivity(ctx, *a); err != nil { | ||
| return nil, log.Err(ctx, err, "Starting the activity") | ||
| } | ||
| } | ||
|
|
||
| return &Process{ | ||
| device: d, | ||
| config: opts.PerfettoConfig, | ||
| deferred: opts.DeferStart, | ||
| }, nil | ||
| } | ||
|
|
||
| // Capture starts the perfetto capture. | ||
| func (p *Process) Capture(ctx context.Context, start task.Signal, stop task.Signal, w io.Writer, written *int64) (int64, error) { | ||
| tmp, err := file.Temp() | ||
| if err != nil { | ||
| return 0, log.Err(ctx, err, "Failed to create a temp file") | ||
| } | ||
|
|
||
| // Signal that we are ready to start. | ||
| atomic.StoreInt64(written, 1) | ||
|
|
||
| if p.deferred && !start.Wait(ctx) { | ||
| return 0, log.Err(ctx, nil, "Cancelled") | ||
| } | ||
|
|
||
| if err := p.device.StartPerfettoTrace(ctx, p.config, perfettoTraceFile, stop); err != nil { | ||
| return 0, err | ||
| } | ||
|
|
||
| if err := p.device.Pull(ctx, perfettoTraceFile, tmp.System()); err != nil { | ||
| return 0, err | ||
| } | ||
|
|
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| size := tmp.Info().Size() | ||
| atomic.StoreInt64(written, size) | ||
| fh, err := os.Open(tmp.System()) | ||
| if err != nil { | ||
| return 0, log.Err(ctx, err, fmt.Sprintf("Failed to open %s", tmp)) | ||
| } | ||
| return io.Copy(w, fh) | ||
| } |
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