1208d14681
* Adds public timeout syscalls to kernel API
* Kernel::timeout installs a timeout and binds a signal context to it that
shall trigger once the timeout expired
* With Kernel::timeout_max_us, one can get the maximum installable timeout
* Kernel::timeout_age_us returns the time that has passed since the
calling threads last timeout installation
* Removes all device specific back-ends for the base-hw timer driver and
implements a generic back-end taht uses the kernel timeout API
* Adds assertions about the kernel timer frequency that originate from the
requirements of the the kernel timeout API and adjusts all timers
accordingly by using the their internal dividers
* Introduces the Kernel::Clock class. As member of each Kernel::Cpu object
it combines the management of the timer of the CPU with a timeout scheduler.
Not only the timeout API uses the timeout scheduler but also the CPUs job
scheduler for installing scheduling timeouts.
* Introduces the Kernel::time_t type for timer tic values and values inherited
from timer tics (like microseconds).
Fixes #1972
36 lines
742 B
C++
36 lines
742 B
C++
/*
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* \brief Platform specific parts of CPU session
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* \author Martin Stein
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* \date 2012-04-17
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*/
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/*
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* Copyright (C) 2012-2013 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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/* Genode includes */
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#include <dataspace/capability.h>
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/* core includes */
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#include <cpu_session_component.h>
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#include <kernel/configuration.h>
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using namespace Genode;
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Dataspace_capability Cpu_thread_component::utcb()
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{
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return _platform_thread.utcb();
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}
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Cpu_session::Quota Cpu_session_component::quota()
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{
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size_t const spu = Kernel::cpu_quota_us;
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size_t const u = quota_lim_downscale<sizet_arithm_t>(_quota, spu);
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return { spu, u };
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}
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