components/metrics/public/interfaces/call_stack_profile_collector.mojom

// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

module metrics.mojom;

import "mojo/public/mojom/base/file_path.mojom";
import "mojo/public/mojom/base/time.mojom";

// These structs mirror the corresponding types in base::StackSamplingProfiler.

struct CallStackModule {
  uint64 base_address;
  string id;
  mojo_base.mojom.FilePath filename;
};

struct CallStackFrame {
  uint64 instruction_pointer;
  uint64 module_index;
};

struct CallStackSample {
  array<CallStackFrame> frames;
  uint32 process_milestones;
};

struct CallStackProfile {
  array<CallStackModule> modules;
  array<CallStackSample> samples;
  mojo_base.mojom.TimeDelta profile_duration;
  mojo_base.mojom.TimeDelta sampling_period;
};

enum Process {
  UNKNOWN_PROCESS,
  BROWSER_PROCESS,
  RENDERER_PROCESS,
  GPU_PROCESS,
  UTILITY_PROCESS,
  ZYGOTE_PROCESS,
  SANDBOX_HELPER_PROCESS,
  PPAPI_PLUGIN_PROCESS,
  PPAPI_BROKER_PROCESS,
};

enum Thread {
  UNKNOWN_THREAD,
  MAIN_THREAD,
  IO_THREAD,
  COMPOSITOR_THREAD,
};

enum Trigger {
  UNKNOWN,
  PROCESS_STARTUP,
  JANKY_TASK,
  THREAD_HUNG,
  PERIODIC_COLLECTION,
};

enum SampleOrderingSpec {
  MAY_SHUFFLE,
  PRESERVE_ORDER,
};

struct CallStackProfileParams {
  Process process;
  Thread thread;
  Trigger trigger;
  SampleOrderingSpec ordering_spec;
};

interface CallStackProfileCollector {
  Collect(CallStackProfileParams params,
          mojo_base.mojom.TimeTicks start_timestamp,
          CallStackProfile profile);
};