a99193ad90
With this patch, the 'futex' syscall gets used for blocking and unblocking of threads in the Linux-specific lock implementation. The 'Native_thread_id' type, which was previously used in the lock-internal 'Applicant' class to identify a thread to be woken up, was not suitable anymore for implementing this change. With this patch, the 'Thread_base*' type gets used instead, which also has the positive effect of making the public 'cancelable_lock.h' header file platform-independent. Fixes #646.
56 lines
1.2 KiB
C++
56 lines
1.2 KiB
C++
/*
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* \brief Platform-specific helper functions for the _main() function
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* \author Christian Prochaska
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* \date 2009-08-05
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*/
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/*
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* Copyright (C) 2009-2013 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 _PLATFORM___MAIN_HELPER_H_
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#define _PLATFORM___MAIN_HELPER_H_
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/* OKL4-specific includes and definitions */
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namespace Okl4 { extern "C" {
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#include <l4/utcb.h>
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#include <l4/thread.h>
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} }
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namespace Okl4 {
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/*
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* Read global thread ID from user-defined handle and store it
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* into a designated UTCB entry.
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*/
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L4_Word_t copy_uregister_to_utcb()
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{
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using namespace Okl4;
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L4_Word_t my_global_id = L4_UserDefinedHandle();
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__L4_TCR_Set_ThreadWord(Genode::UTCB_TCR_THREAD_WORD_MYSELF,
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my_global_id);
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return my_global_id;
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}
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}
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Genode::Native_thread_id main_thread_tid;
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static void main_thread_bootstrap()
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{
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/* copy thread ID to utcb */
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main_thread_tid.raw = Okl4::copy_uregister_to_utcb();
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if (main_thread_tid.raw == 0) /* core */
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main_thread_tid.raw = Okl4::L4_rootserver.raw;
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}
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#endif /* _PLATFORM___MAIN_HELPER_H_ */
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