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145 lines
2.5 KiB
C++
145 lines
2.5 KiB
C++
/**
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* \brief Hard-context for use within rump kernel
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* \author Sebastian Sumpf
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* \date 2014-02-05
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*/
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/*
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* Copyright (C) 2014-2017 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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#ifndef _INCLUDE__HARD_CONTEXT_H_
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#define _INCLUDE__HARD_CONTEXT_H_
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extern "C" {
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#include <sys/cdefs.h>
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#include <sys/types.h>
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#include <rump/rump.h>
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}
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#include <base/thread.h>
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#include <base/log.h>
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#include <rump/env.h>
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#include <util/avl_tree.h>
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/*************
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** Threads **
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*************/
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typedef void *(*func)(void *);
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namespace Timer {
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class Connection;
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};
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class Hard_context : public Genode::Avl_node<Hard_context>
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{
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private:
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int _cookie;
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lwp *_lwp = nullptr;
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public:
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Genode::Thread *_myself = nullptr;
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public:
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Hard_context(int cookie)
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: _cookie(cookie){ }
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void set_lwp(lwp *l) { _lwp = l; }
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lwp *get_lwp() { return _lwp; }
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static Timer::Connection &timer();
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bool higher(Hard_context *h) { return _myself > h->_myself; }
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Hard_context *find(Genode::Thread const *t)
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{
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if (_myself == t)
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return this;
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Hard_context *h = child(_myself > t);
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if (!h)
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return nullptr;
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return h->find(t);
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}
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void thread(Genode::Thread *t) { _myself = t; }
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};
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class Hard_context_registry : public Genode::Avl_tree<Hard_context>
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{
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private:
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Genode::Mutex mutex;
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public:
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Hard_context *find(Genode::Thread const *t)
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{
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Genode::Mutex::Guard guard(mutex);
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if (!first())
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return nullptr;
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return first()->find(t);
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}
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void insert(Hard_context *h)
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{
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Genode::Mutex::Guard guard(mutex);
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Avl_tree::insert(h);
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}
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void remove(Hard_context *h)
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{
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Genode::Mutex::Guard guard(mutex);
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Avl_tree::remove(h);
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}
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static Hard_context_registry &r()
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{
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static Hard_context_registry _r;
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return _r;
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}
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};
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class Hard_context_thread : public Hard_context,
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public Genode::Thread
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{
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private:
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func _func;
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void *_arg;
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protected:
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void entry()
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{
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Hard_context::thread(Genode::Thread::myself());
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Hard_context_registry::r().insert(this);
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_func(_arg);
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Hard_context_registry::r().remove(this);
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Genode::log(__func__, " returned from func");
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}
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public:
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Hard_context_thread(char const *name, func f, void *arg, int cookie, bool run = true)
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: Hard_context(cookie), Thread(Rump::env().env(), name, sizeof(long) * 2048),
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_func(f), _arg(arg) { if (run) start(); }
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};
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#endif /* _INCLUDE__HARD_CONTEXT_H_ */
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