1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
|
// Copyright 2024 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef COMPONENTS_PERFORMANCE_MANAGER_SCENARIOS_BROWSER_PERFORMANCE_SCENARIOS_H_
#define COMPONENTS_PERFORMANCE_MANAGER_SCENARIOS_BROWSER_PERFORMANCE_SCENARIOS_H_
#include <memory>
#include "base/memory/read_only_shared_memory_region.h"
#include "base/types/pass_key.h"
#include "components/performance_manager/scenario_api/performance_scenarios.h"
namespace content {
class RenderProcessHost;
} // namespace content
namespace performance_manager {
class PerformanceScenarioData;
class ProcessNode;
class ScopedGlobalScenarioMemory;
// Convenience aliases.
using LoadingScenario = performance_scenarios::LoadingScenario;
using InputScenario = performance_scenarios::InputScenario;
// Functions to manage the browser side of ScenarioState memory regions that
// communicate state to child processes. The state can be read from any process
// using functions in
// //components/performance_manager/scenario_api/performance_scenarios.h.
//
// All functions must be called from the UI thread.
// Lets ScopedGlobalScenarioMemory set the global scenario state, or clear it if
// `state` is nullptr.
void SetGlobalSharedScenarioState(
base::PassKey<ScopedGlobalScenarioMemory>,
std::unique_ptr<PerformanceScenarioData> state);
// Returns a copy of the shared memory handle for the scenario state of
// `process_node`, or an invalid handle if there is none. The handle can be
// passed to the child process to map in the scenario state.
base::ReadOnlySharedMemoryRegion GetSharedScenarioRegionForProcessNode(
const ProcessNode* process_node);
// Returns a copy of the shared memory handle for the global scenario state, or
// an invalid handle if there is none. The handle can be passed to child
// processes to map in the scenario state.
base::ReadOnlySharedMemoryRegion GetGlobalSharedScenarioRegion();
// Functions to set the current performance scenarios. This can only be done
// from the browser process.
// Atomically updates the loading scenario for a renderer process.
void SetLoadingScenarioForProcess(LoadingScenario scenario,
content::RenderProcessHost* host);
void SetLoadingScenarioForProcessNode(LoadingScenario scenario,
const ProcessNode* process_node);
// Atomically updates the global loading scenario.
void SetGlobalLoadingScenario(LoadingScenario scenario);
// Atomically updates the input scenario for a renderer process.
void SetInputScenarioForProcess(InputScenario scenario,
content::RenderProcessHost* host);
void SetInputScenarioForProcessNode(InputScenario scenario,
const ProcessNode* process_node);
// Atomically updates the global input scenario.
void SetGlobalInputScenario(InputScenario scenario);
} // namespace performance_manager
#endif // COMPONENTS_PERFORMANCE_MANAGER_SCENARIOS_BROWSER_PERFORMANCE_SCENARIOS_H_
|
