File: heap_profiling_service.mojom

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// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

module heap_profiling.mojom;

import "components/services/heap_profiling/public/mojom/heap_profiling_client.mojom";
import "mojo/public/mojom/base/process_id.mojom";

// These values are persisted to logs. Entries should not be renumbered and
// numeric values should never be reused.
enum ProcessType {
  OTHER = 0,
  BROWSER = 1,
  RENDERER = 2,
  GPU = 3,
  LAST = GPU
};

// This interface is how the browser process sends commands to the profiling
// process.
interface ProfilingService {
  // Adds a new profiling client.
  //
  // The "client" interface will be for the instrumented process. It allows the
  // profiling process to talk to the new process. Invokes the return callback
  // with the argument `success`: whether profiling starts successfully or not.
  AddProfilingClient(mojo_base.mojom.ProcessId pid,
                     pending_remote<ProfilingClient> client,
                     ProcessType process_type,
                     ProfilingParams params) => (bool success);

  // Returns the pids of all profiled processes.
  GetProfiledPids() => (array<mojo_base.mojom.ProcessId> pids);
};