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
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
|
/*
* Copyright (C) 2017 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 specic language governing permissions and
* limitations under the License.
*/
#ifndef ANDROID_LIBPERFMGR_HINTMANAGER_H_
#define ANDROID_LIBPERFMGR_HINTMANAGER_H_
#include <cstddef>
#include <map>
#include <memory>
#include <string>
#include <utility>
#include <vector>
#include "perfmgr/NodeLooperThread.h"
namespace android {
namespace perfmgr {
// HintManager is the external interface of the library to be used by PowerHAL
// to do power hints with sysfs nodes. HintManager maintains a representation of
// the actions that are parsed from the configuration file as a mapping from a
// PowerHint to the set of actions that are performed for that PowerHint.
class HintManager {
public:
HintManager(sp<NodeLooperThread> nm,
const std::map<std::string, std::vector<NodeAction>>& actions)
: nm_(std::move(nm)), actions_(actions) {}
~HintManager() {
if (nm_.get() != nullptr) nm_->Stop();
}
// Return true if the sysfs manager thread is running.
bool IsRunning() const;
// Do hint based on hint_type which defined as PowerHint in the actions
// section of the JSON config. Return true with valid hint_type and also
// NodeLooperThread::Request succeeds; otherwise return false.
bool DoHint(const std::string& hint_type);
// Do hint with the override time for all actions defined for the given
// hint_type. Return true with valid hint_type and also
// NodeLooperThread::Request succeeds; otherwise return false.
bool DoHint(const std::string& hint_type,
std::chrono::milliseconds timeout_ms_override);
// End hint early. Return true with valid hint_type and also
// NodeLooperThread::Cancel succeeds; otherwise return false.
bool EndHint(const std::string& hint_type);
// Query if given hint supported.
bool IsHintSupported(const std::string& hint_type) const;
// Static method to construct HintManager from the JSON config file.
static std::unique_ptr<HintManager> GetFromJSON(
const std::string& config_path, bool start = true);
// Return available hints managed by HintManager
std::vector<std::string> GetHints() const;
// Dump internal status to fd
void DumpToFd(int fd);
// Start thread loop
bool Start();
protected:
static std::vector<std::unique_ptr<Node>> ParseNodes(
const std::string& json_doc);
static std::map<std::string, std::vector<NodeAction>> ParseActions(
const std::string& json_doc,
const std::vector<std::unique_ptr<Node>>& nodes);
private:
HintManager(HintManager const&) = delete;
void operator=(HintManager const&) = delete;
bool ValidateHint(const std::string& hint_type) const;
sp<NodeLooperThread> nm_;
const std::map<std::string, std::vector<NodeAction>> actions_;
};
} // namespace perfmgr
} // namespace android
#endif // ANDROID_LIBPERFMGR_HINTMANAGER_H_
|
