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
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
|
/**
* Copyright (C) 2021 Saturneric <[email protected]>
*
* This file is part of GpgFrontend.
*
* GpgFrontend is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GpgFrontend is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GpgFrontend. If not, see <https://www.gnu.org/licenses/>.
*
* The initial version of the source code is inherited from
* the gpg4usb project, which is under GPL-3.0-or-later.
*
* All the source code of GpgFrontend was modified and released by
* Saturneric <[email protected]> starting on May 12, 2021.
*
* SPDX-License-Identifier: GPL-3.0-or-later
*
*/
#include "SingletonStorage.h"
#include <shared_mutex>
#include "core/function/basic/ChannelObject.h"
namespace GpgFrontend {
class SingletonStorage::Impl {
public:
void ReleaseChannel(int channel) {
decltype(instances_map_.end()) ins_it;
{
std::shared_lock<std::shared_mutex> lock(instances_mutex_);
ins_it = instances_map_.find(channel);
}
if (ins_it != instances_map_.end()) instances_map_.erase(ins_it);
}
auto FindObjectInChannel(int channel) -> GpgFrontend::ChannelObject* {
// read instances_map_
decltype(instances_map_.end()) ins_it;
{
std::shared_lock<std::shared_mutex> lock(instances_mutex_);
ins_it = instances_map_.find(channel);
if (ins_it == instances_map_.end()) {
SPDLOG_TRACE("cannot find channel object, channel :{}", channel);
return nullptr;
}
return ins_it->second.get();
}
}
auto GetAllChannelId() -> std::vector<int> {
std::vector<int> channels;
channels.reserve(instances_map_.size());
for (const auto& [key, value] : instances_map_) {
channels.push_back(key);
}
return channels;
}
auto SetObjectInChannel(int channel, ChannelObjectPtr p_obj)
-> GpgFrontend::ChannelObject* {
{
SPDLOG_TRACE("set channel object, type: {} in channel: {}, address: {}",
typeid(p_obj.get()).name(), channel,
static_cast<void*>(p_obj.get()));
assert(p_obj != nullptr);
if (p_obj == nullptr) {
SPDLOG_ERROR("cannot set a nullptr as a channel obejct of channel: {}",
channel);
return nullptr;
}
p_obj->SetChannel(channel);
auto* raw_obj = p_obj.get();
{
SPDLOG_TRACE(
"register channel object to instances map, "
"channel: {}, address: {}",
channel, static_cast<void*>(p_obj.get()));
std::unique_lock<std::shared_mutex> lock(instances_mutex_);
instances_map_[channel] = std::move(p_obj);
}
SPDLOG_TRACE(
"set channel: {} success, current channel object address: {}",
channel, static_cast<void*>(raw_obj));
return raw_obj;
}
}
private:
std::shared_mutex instances_mutex_; ///< mutex for _instances_map
std::map<int, ChannelObjectPtr>
instances_map_; ///< map of singleton instances
};
SingletonStorage::SingletonStorage() noexcept : p_(std::make_unique<Impl>()) {}
SingletonStorage::~SingletonStorage() = default;
void SingletonStorage::ReleaseChannel(int channel) {
p_->ReleaseChannel(channel);
}
auto SingletonStorage::FindObjectInChannel(int channel)
-> GpgFrontend::ChannelObject* {
return p_->FindObjectInChannel(channel);
}
auto SingletonStorage::GetAllChannelId() -> std::vector<int> {
return p_->GetAllChannelId();
}
auto SingletonStorage::SetObjectInChannel(int channel, ChannelObjectPtr p_obj)
-> GpgFrontend::ChannelObject* {
return p_->SetObjectInChannel(channel, std::move(p_obj));
}
}; // namespace GpgFrontend
|
