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144 lines
3.5 KiB
C++
144 lines
3.5 KiB
C++
/*
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* \brief Dummy definitions for native types used for compiling unit tests
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* \author Norman Feske
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* \date 2009-10-02
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*/
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/*
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* Copyright (C) 2009-2011 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__BASE__NATIVE_TYPES_H_
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#define _INCLUDE__BASE__NATIVE_TYPES_H_
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namespace Codezero {
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struct l4_mutex;
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enum { NILTHREAD = -1 };
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}
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namespace Genode {
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class Platform_thread;
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struct Native_thread_id
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{
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int tid;
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/**
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* Pointer to thread's running lock
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*
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* Once initialized (see 'lock_helper.h'), it will point to the
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* '_running_lock' field of the thread's 'Native_thread' structure,
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* which is part of the thread context. This member variable is
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* used by the lock implementation only.
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*/
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struct Codezero::l4_mutex *running_lock;
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Native_thread_id() { }
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/**
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* Constructor (used as implicit constructor)
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*/
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Native_thread_id(int l4id) : tid(l4id), running_lock(0) { }
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Native_thread_id(int l4id, Codezero::l4_mutex *rl) : tid(l4id), running_lock(rl) { }
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};
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struct Native_thread
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{
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Native_thread_id l4id;
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/**
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* Only used in core
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*
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* For 'Thread' objects created within core, 'pt' points to the
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* physical thread object, which is going to be destroyed on
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* destruction of the 'Thread'.
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*/
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Platform_thread *pt;
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};
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/**
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* Empty UTCB type expected by the thread library
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*
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* On this kernel, UTCBs are not placed within the the context area. Each
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* thread can request its own UTCB pointer using the kernel interface.
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* However, we use the 'Native_utcb' member of the thread context to
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* hold thread-specific data, i.e. the running lock used by the lock
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* implementation.
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*/
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struct Native_utcb
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{
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private:
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/**
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* Prevent construction
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*
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* A UTCB is never constructed, it is backed by zero-initialized memory.
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*/
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Native_utcb();
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/**
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* Backing store for per-thread running lock
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*
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* The size of this member must equal 'sizeof(Codezero::l4_mutex)'.
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* Unfortunately, we cannot include the Codezero headers here.
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*/
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int _running_lock;
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public:
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Codezero::l4_mutex *running_lock() {
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return (Codezero::l4_mutex *)&_running_lock; }
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};
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inline bool operator == (Native_thread_id t1, Native_thread_id t2) { return t1.tid == t2.tid; }
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inline bool operator != (Native_thread_id t1, Native_thread_id t2) { return t1.tid != t2.tid; }
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/*
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* Because Codezero does not support local names for capabilities, a Genode
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* capability consists of the global thread ID and a global object ID, not
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* protected by the kernel when transmitted as IPC payloads.
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*/
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class Native_capability
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{
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private:
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Native_thread_id _tid; /* global thread ID */
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int _local_name; /* global unique object ID */
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public:
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/**
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* Default constructor creates invalid capability
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*/
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Native_capability()
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: _local_name(0) { _tid.tid = Codezero::NILTHREAD; }
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/**
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* Constructor for hand-crafting capabilities
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*
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* This constructor is only used internally be the framework.
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*/
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Native_capability(Native_thread_id tid, int local_name)
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: _tid(tid), _local_name(local_name) { }
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bool valid() const { return _tid.tid != Codezero::NILTHREAD; }
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int local_name() const { return _local_name; }
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int dst() const { return _tid.tid; }
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Native_thread_id tid() const { return _tid; }
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};
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typedef int Native_connection_state;
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}
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#endif /* _INCLUDE__BASE__NATIVE_TYPES_H_ */
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