92 lines
2.3 KiB
C++
92 lines
2.3 KiB
C++
/*
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* \brief Default version of platform-specific part of RPC framework
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* \author Norman Feske
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* \date 2006-05-12
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*/
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/*
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* Copyright (C) 2006-2017 Genode Labs GmbH
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*
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* This file is part of the Genode OS framework, which is distributed
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* under the terms of the GNU Affero General Public License version 3.
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*/
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/* Genode includes */
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#include <util/retry.h>
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#include <base/rpc_server.h>
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/* base-internal includes */
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#include <base/internal/ipc_server.h>
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using namespace Genode;
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/***********************
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** Server entrypoint **
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***********************/
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Untyped_capability Rpc_entrypoint::_manage(Rpc_object_base *obj)
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{
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/* don't manage RPC object twice */
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if (obj->cap().valid()) {
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warning("attempt to manage RPC object twice");
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return obj->cap();
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}
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Untyped_capability new_obj_cap = _alloc_rpc_cap(_pd_session, _cap);
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/* add server object to object pool */
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obj->cap(new_obj_cap);
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insert(obj);
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/* return capability that uses the object id as badge */
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return new_obj_cap;
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}
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void Rpc_entrypoint::entry()
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{
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Ipc_server srv;
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_cap = srv;
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_cap_valid.unlock();
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/*
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* Now, the capability of the server activation is initialized
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* an can be passed around. However, the processing of capability
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* invocations should not happen until activation-using server
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* is completely initialized. Thus, we wait until the activation
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* gets explicitly unblocked by calling 'Rpc_entrypoint::activate()'.
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*/
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_delay_start.lock();
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Rpc_exception_code exc = Rpc_exception_code(Rpc_exception_code::INVALID_OBJECT);
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while (!_exit_handler.exit) {
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Rpc_request const request = ipc_reply_wait(_caller, exc, _snd_buf, _rcv_buf);
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_caller = request.caller;
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Ipc_unmarshaller unmarshaller(_rcv_buf);
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Rpc_opcode opcode(0);
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unmarshaller.extract(opcode);
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/* set default return value */
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exc = Rpc_exception_code(Rpc_exception_code::INVALID_OBJECT);
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_snd_buf.reset();
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apply(request.badge, [&] (Rpc_object_base *obj)
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{
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if (!obj) { return;}
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try { exc = obj->dispatch(opcode, unmarshaller, _snd_buf); }
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catch(Blocking_canceled&) { }
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});
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}
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/* answer exit call, thereby wake up '~Rpc_entrypoint' */
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Msgbuf<16> snd_buf;
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ipc_reply(_caller, Rpc_exception_code(Rpc_exception_code::SUCCESS), snd_buf);
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/* defer the destruction of 'Ipc_server' until '~Rpc_entrypoint' is ready */
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_delay_exit.lock();
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}
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