1 files changed, 143 insertions, 0 deletions
diff --git a/src/core/GpgFunctionObject.cpp b/src/core/GpgFunctionObject.cpp
new file mode 100644
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--- /dev/null
+++ b/src/core/GpgFunctionObject.cpp
@@ -0,0 +1,143 @@
+/**
+ * Copyright (C) 2021 Saturneric
+ *
+ * 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 "core/GpgFunctionObject.h"
+
+#include <cassert>
+#include <functional>
+#include <memory>
+#include <mutex>
+#include <shared_mutex>
+
+#include "easylogging++.h"
+
+void GpgFrontend::ChannelObject::SetChannel(int channel) {
+  this->channel_ = channel;
+}
+
+int GpgFrontend::ChannelObject::GetChannel() const { return channel_; }
+
+int GpgFrontend::ChannelObject::GetDefaultChannel() { return _default_channel; }
+
+void GpgFrontend::SingletonStorage::ReleaseChannel(int channel) {
+  decltype(instances_map_.end()) _it;
+  {
+    std::shared_lock<std::shared_mutex> lock(instances_mutex_);
+    _it = instances_map_.find(channel);
+  }
+  if (_it != instances_map_.end()) instances_map_.erase(_it);
+  DLOG(INFO) << "channel" << channel << "released";
+}
+
+GpgFrontend::ChannelObject* GpgFrontend::SingletonStorage::FindObjectInChannel(
+    int channel) {
+  LOG(INFO) << "channel:" << channel << "instance address:" << &instances_map_;
+  // read instances_map_
+  decltype(instances_map_.end()) _it;
+  {
+    std::shared_lock<std::shared_mutex> lock(instances_mutex_);
+    _it = instances_map_.find(channel);
+    if (_it == instances_map_.end()) {
+      LOG(INFO) << "channel:" << channel << "not found";
+      return nullptr;
+    } else {
+      return _it->second.get();
+    }
+  }
+}
+
+std::vector<int> GpgFrontend::SingletonStorage::GetAllChannelId() {
+  std::vector<int> _channels;
+  for (const auto& [key, value] : instances_map_) {
+    _channels.push_back(key);
+  }
+  return _channels;
+}
+
+GpgFrontend::ChannelObject* GpgFrontend::SingletonStorage::SetObjectInChannel(
+    int channel, std::unique_ptr<ChannelObject> p_obj) {
+  {
+    LOG(INFO) << "channel:" << channel
+              << "instance address:" << &instances_map_;
+
+    assert(p_obj != nullptr);
+    if (p_obj == nullptr) return nullptr;
+
+    auto raw_obj = p_obj.get();
+    p_obj->SetChannel(channel);
+    {
+      std::unique_lock<std::shared_mutex> lock(instances_mutex_);
+      instances_map_.insert({channel, std::move(p_obj)});
+    }
+    return raw_obj;
+  }
+}
+
+GpgFrontend::SingletonStorage*
+GpgFrontend::SingletonStorageCollection::GetSingletonStorage(
+    const std::type_info& type_id) {
+  const auto hash = type_id.hash_code();
+  LOG(INFO) << "hash" << hash << "type_name:" << type_id.name();
+
+  while (true) {
+    decltype(storages_map_.end()) _it;
+    {
+      std::shared_lock<std::shared_mutex> lock(storages_mutex_);
+      _it = storages_map_.find(hash);
+    }
+    if (_it == storages_map_.end()) {
+      LOG(INFO) << "hash:" << hash << "not found";
+      {
+        std::unique_lock<std::shared_mutex> lock(storages_mutex_);
+        storages_map_.insert({hash, std::make_unique<SingletonStorage>()});
+        LOG(INFO) << "hash:" << hash << "created"
+                  << "storage address:" << &storages_map_;
+      }
+      continue;
+    } else {
+      LOG(INFO) << "hash:" << hash << "found";
+      return _it->second.get();
+    }
+  }
+}
+
+GpgFrontend::SingletonStorageCollection*
+GpgFrontend::SingletonStorageCollection::GetInstance() {
+  static SingletonStorageCollection* instance = nullptr;
+  if (instance == nullptr) {
+    instance = new SingletonStorageCollection();
+  }
+  return instance;
+}
+
+GpgFrontend::ChannelObject::ChannelObject() noexcept = default;
+
+GpgFrontend::ChannelObject::ChannelObject(int channel) : channel_(channel) {
+  LOG(INFO) << "called"
+            << "channel:" << channel;
+}