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104 lines
3.0 KiB
C++
104 lines
3.0 KiB
C++
// Copyright 2026 Mocktail Project Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef MOCKTAIL_RUNTIME_GAME_MODE_H_
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#define MOCKTAIL_RUNTIME_GAME_MODE_H_
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#include <string>
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#include <string_view>
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#include "mocktail/status.h"
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namespace mocktail {
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namespace runtime {
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enum class GameModePolicy {
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kAuto,
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kOn,
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kOff,
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};
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bool ParseGameModePolicy(std::string_view value, GameModePolicy* policy);
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const char* GameModePolicyName(GameModePolicy policy);
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enum class GameModeSessionState {
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kDisabled,
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kUnavailable,
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kRequestFailed,
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kAlreadyActive,
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kActive,
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kStopped,
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kStopFailed,
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};
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const char* GameModeSessionStateName(GameModeSessionState state);
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// libgamemode's public header exposes header-only wrappers. The shared object
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// itself exports the real_* entry points represented by this table.
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struct GameModeClientApi {
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using RequestFn = int (*)();
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using QueryFn = int (*)();
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using ErrorFn = const char* (*)();
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RequestFn request_start = nullptr;
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RequestFn request_end = nullptr;
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QueryFn query_status = nullptr;
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ErrorFn error_string = nullptr;
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};
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// Owns at most one ref-counted GameMode request. Missing host support and
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// daemon rejection remain nonfatal because GameMode is an optimization, not a
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// correctness dependency.
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class GameModeSession final {
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public:
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GameModeSession() = default;
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~GameModeSession();
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GameModeSession(const GameModeSession&) = delete;
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GameModeSession& operator=(const GameModeSession&) = delete;
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GameModeSession(GameModeSession&& other) noexcept;
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GameModeSession& operator=(GameModeSession&& other) = delete;
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static GameModeSession Start(GameModePolicy policy);
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static GameModeSession StartWithClientForTesting(
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GameModePolicy policy, GameModeClientApi api);
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GameModeSessionState state() const { return state_; }
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const std::string& detail() const { return detail_; }
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bool active() const {
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return state_ == GameModeSessionState::kActive ||
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state_ == GameModeSessionState::kAlreadyActive;
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}
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bool owns_request() const { return owns_request_; }
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Status Stop();
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private:
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static GameModeSession StartBound(GameModePolicy policy,
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GameModeClientApi api,
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void* library_handle);
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void CloseLibrary();
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GameModeClientApi api_;
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void* library_handle_ = nullptr;
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GameModeSessionState state_ = GameModeSessionState::kDisabled;
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bool owns_request_ = false;
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std::string detail_;
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};
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} // namespace runtime
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} // namespace mocktail
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#endif // MOCKTAIL_RUNTIME_GAME_MODE_H_
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