170 lines
4.2 KiB
C++
170 lines
4.2 KiB
C++
/*
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* \brief Report-ROM slave
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* \author Norman Feske
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* \date 2014-02-14
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*/
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/*
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* Copyright (C) 2014 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 General Public License version 2.
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*/
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#ifndef _INCLUDE__GEMS__REPORT_ROM_SLAVE_H_
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#define _INCLUDE__GEMS__REPORT_ROM_SLAVE_H_
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/* Genode includes */
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#include <base/lock.h>
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#include <os/slave.h>
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#include <report_session/report_session.h>
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#include <rom_session/capability.h>
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#include <root/client.h>
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class Report_rom_slave : public Genode::Noncopyable
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{
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private:
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class Policy : public Genode::Slave_policy
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{
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private:
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Genode::Root_capability _report_root_cap;
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Genode::Root_capability _rom_root_cap;
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bool _announced;
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Genode::Lock mutable _lock; /* used to wait for announcement */
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protected:
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char const **_permitted_services() const
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{
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static char const *permitted_services[] = {
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"CAP", "LOG", "SIGNAL", "RM", 0 };
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return permitted_services;
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};
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public:
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Policy(Genode::Rpc_entrypoint &entrypoint,
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Genode::Ram_session &ram,
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const char *config)
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:
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Slave_policy("report_rom", entrypoint, &ram),
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_lock(Genode::Lock::LOCKED)
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{
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if (config)
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configure(config);
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}
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bool announce_service(const char *service_name,
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Genode::Root_capability root,
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Genode::Allocator *,
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Genode::Server *)
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{
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if (Genode::strcmp(service_name, "ROM") == 0)
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_rom_root_cap = root;
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else if (Genode::strcmp(service_name, "Report") == 0)
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_report_root_cap = root;
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else
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return false;
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if (_rom_root_cap.valid() && _report_root_cap.valid())
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_lock.unlock();
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return true;
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}
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Genode::Root_capability report_root() const
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{
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Genode::Lock::Guard guard(_lock);
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return _report_root_cap;
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}
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Genode::Root_capability rom_root() const
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{
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Genode::Lock::Guard guard(_lock);
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return _rom_root_cap;
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}
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};
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Genode::size_t const _ep_stack_size = 4*1024*sizeof(Genode::addr_t);
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Genode::Rpc_entrypoint _ep;
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Policy _policy;
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Genode::size_t const _quota = 1024*1024;
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Genode::Slave _slave;
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Genode::Root_client _rom_root;
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Genode::Root_client _report_root;
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public:
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/**
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* Constructor
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*
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* \param ep entrypoint used for child thread
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* \param ram RAM session used to allocate the configuration
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* dataspace
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*/
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Report_rom_slave(Genode::Cap_session &cap, Genode::Ram_session &ram,
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char const *config)
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:
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_ep(&cap, _ep_stack_size, "report_rom"),
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_policy(_ep, ram, config),
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_slave(_ep, _policy, _quota),
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_rom_root(_policy.rom_root()),
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_report_root(_policy.report_root())
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{ }
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Genode::Rom_session_capability rom_session(char const *label)
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{
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using namespace Genode;
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enum { ARGBUF_SIZE = 128 };
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char argbuf[ARGBUF_SIZE];
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argbuf[0] = 0;
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/*
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* Declare ram-quota donation
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*/
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enum { SESSION_METADATA = 4*1024 };
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Arg_string::set_arg(argbuf, sizeof(argbuf), "ram_quota", SESSION_METADATA);
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/*
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* Set session label
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*/
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Arg_string::set_arg_string(argbuf, sizeof(argbuf), "label", label);
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Session_capability session_cap = _rom_root.session(argbuf, Affinity());
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return static_cap_cast<Genode::Rom_session>(session_cap);
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}
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Genode::Capability<Report::Session> report_session(char const *label)
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{
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using namespace Genode;
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enum { ARGBUF_SIZE = 128 };
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char argbuf[ARGBUF_SIZE];
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argbuf[0] = 0;
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/*
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* Declare ram-quota donation
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*/
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enum { BUFFER_SIZE = 4096, SESSION_METADATA = BUFFER_SIZE + 8*1024 };
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Arg_string::set_arg(argbuf, sizeof(argbuf), "ram_quota", SESSION_METADATA);
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Arg_string::set_arg(argbuf, sizeof(argbuf), "buffer_size", BUFFER_SIZE);
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/*
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* Set session label
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*/
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Arg_string::set_arg_string(argbuf, sizeof(argbuf), "label", label);
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Session_capability session_cap = _report_root.session(argbuf, Affinity());
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return static_cap_cast<Report::Session>(session_cap);
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}
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};
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#endif /* _INCLUDE__GEMS__REPORT_ROM_SLAVE_H_ */
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