/* * \brief Signal-source interface * \author Norman Feske * \date 2010-02-03 * * This file is only included by 'signal_session/signal_session.h' and relies * on the headers included there. No include guards are needed. It is a * separate header file to make it easily replaceable by a platform-specific * implementation. */ /* * Copyright (C) 2010-2011 Genode Labs GmbH * * This file is part of the Genode OS framework, which is distributed * under the terms of the GNU General Public License version 2. */ #ifndef _INCLUDE__SIGNAL_SESSION__SOURCE_H_ #define _INCLUDE__SIGNAL_SESSION__SOURCE_H_ #include namespace Genode { /** * Blocking part of the signal-session interface * * The blocking 'wait_for_signal()' function cannot be part of the * signal-session interface because otherwise, context allocations or * signal submissions would not be possible while blocking for signals. * Therefore, the blocking part is implemented a separate interface, * which can be used by an independent thread. */ struct Signal_source { class Signal { private: long _imprint; int _num; public: Signal(long imprint, int num) : _imprint(imprint), _num(num) { } Signal() : _imprint(0), _num(0) { } long imprint() { return _imprint; } int num() { return _num; } }; virtual ~Signal_source() { } /** * Wait for signal */ virtual Signal wait_for_signal() = 0; /********************* ** RPC declaration ** *********************/ GENODE_RPC(Rpc_wait_for_signal, Signal, wait_for_signal); GENODE_RPC_INTERFACE(Rpc_wait_for_signal); }; } #endif /* _INCLUDE__SIGNAL_SESSION__SOURCE_H_ */