2016-05-10 18:05:38 +02:00
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/*
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* \brief CPU thread RPC object
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* \author Norman Feske
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* \date 2016-05-10
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*/
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/*
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2017-02-20 13:23:52 +01:00
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* Copyright (C) 2016-2017 Genode Labs GmbH
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2016-05-10 18:05:38 +02:00
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*
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* This file is part of the Genode OS framework, which is distributed
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2017-02-20 13:23:52 +01:00
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* under the terms of the GNU Affero General Public License version 3.
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2016-05-10 18:05:38 +02:00
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*/
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#ifndef _CORE__INCLUDE__CPU_THREAD_COMPONENT_H_
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#define _CORE__INCLUDE__CPU_THREAD_COMPONENT_H_
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/* Genode includes */
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#include <util/list.h>
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#include <base/rpc_server.h>
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#include <cpu_thread/cpu_thread.h>
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2016-01-12 14:11:58 +01:00
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#include <base/session_label.h>
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2016-05-10 18:05:38 +02:00
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/* core includes */
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#include <pager.h>
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#include <cpu_thread_allocator.h>
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#include <pd_session_component.h>
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#include <platform_thread.h>
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#include <trace/control_area.h>
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#include <trace/source_registry.h>
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namespace Genode { class Cpu_thread_component; }
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Follow practices suggested by "Effective C++"
The patch adjust the code of the base, base-<kernel>, and os repository.
To adapt existing components to fix violations of the best practices
suggested by "Effective C++" as reported by the -Weffc++ compiler
argument. The changes follow the patterns outlined below:
* A class with virtual functions can no longer publicly inherit base
classed without a vtable. The inherited object may either be moved
to a member variable, or inherited privately. The latter would be
used for classes that inherit 'List::Element' or 'Avl_node'. In order
to enable the 'List' and 'Avl_tree' to access the meta data, the
'List' must become a friend.
* Instead of adding a virtual destructor to abstract base classes,
we inherit the new 'Interface' class, which contains a virtual
destructor. This way, single-line abstract base classes can stay
as compact as they are now. The 'Interface' utility resides in
base/include/util/interface.h.
* With the new warnings enabled, all member variables must be explicitly
initialized. Basic types may be initialized with '='. All other types
are initialized with braces '{ ... }' or as class initializers. If
basic types and non-basic types appear in a row, it is nice to only
use the brace syntax (also for basic types) and align the braces.
* If a class contains pointers as members, it must now also provide a
copy constructor and assignment operator. In the most cases, one
would make them private, effectively disallowing the objects to be
copied. Unfortunately, this warning cannot be fixed be inheriting
our existing 'Noncopyable' class (the compiler fails to detect that
the inheriting class cannot be copied and still gives the error).
For now, we have to manually add declarations for both the copy
constructor and assignment operator as private class members. Those
declarations should be prepended with a comment like this:
/*
* Noncopyable
*/
Thread(Thread const &);
Thread &operator = (Thread const &);
In the future, we should revisit these places and try to replace
the pointers with references. In the presence of at least one
reference member, the compiler would no longer implicitly generate
a copy constructor. So we could remove the manual declaration.
Issue #465
2017-12-21 15:42:15 +01:00
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class Genode::Cpu_thread_component : public Rpc_object<Cpu_thread>,
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private List<Cpu_thread_component>::Element,
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public Trace::Source::Info_accessor
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2016-05-10 18:05:38 +02:00
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{
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public:
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Follow practices suggested by "Effective C++"
The patch adjust the code of the base, base-<kernel>, and os repository.
To adapt existing components to fix violations of the best practices
suggested by "Effective C++" as reported by the -Weffc++ compiler
argument. The changes follow the patterns outlined below:
* A class with virtual functions can no longer publicly inherit base
classed without a vtable. The inherited object may either be moved
to a member variable, or inherited privately. The latter would be
used for classes that inherit 'List::Element' or 'Avl_node'. In order
to enable the 'List' and 'Avl_tree' to access the meta data, the
'List' must become a friend.
* Instead of adding a virtual destructor to abstract base classes,
we inherit the new 'Interface' class, which contains a virtual
destructor. This way, single-line abstract base classes can stay
as compact as they are now. The 'Interface' utility resides in
base/include/util/interface.h.
* With the new warnings enabled, all member variables must be explicitly
initialized. Basic types may be initialized with '='. All other types
are initialized with braces '{ ... }' or as class initializers. If
basic types and non-basic types appear in a row, it is nice to only
use the brace syntax (also for basic types) and align the braces.
* If a class contains pointers as members, it must now also provide a
copy constructor and assignment operator. In the most cases, one
would make them private, effectively disallowing the objects to be
copied. Unfortunately, this warning cannot be fixed be inheriting
our existing 'Noncopyable' class (the compiler fails to detect that
the inheriting class cannot be copied and still gives the error).
For now, we have to manually add declarations for both the copy
constructor and assignment operator as private class members. Those
declarations should be prepended with a comment like this:
/*
* Noncopyable
*/
Thread(Thread const &);
Thread &operator = (Thread const &);
In the future, we should revisit these places and try to replace
the pointers with references. In the presence of at least one
reference member, the compiler would no longer implicitly generate
a copy constructor. So we could remove the manual declaration.
Issue #465
2017-12-21 15:42:15 +01:00
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typedef Trace::Thread_name Thread_name;
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2016-05-10 18:05:38 +02:00
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private:
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Follow practices suggested by "Effective C++"
The patch adjust the code of the base, base-<kernel>, and os repository.
To adapt existing components to fix violations of the best practices
suggested by "Effective C++" as reported by the -Weffc++ compiler
argument. The changes follow the patterns outlined below:
* A class with virtual functions can no longer publicly inherit base
classed without a vtable. The inherited object may either be moved
to a member variable, or inherited privately. The latter would be
used for classes that inherit 'List::Element' or 'Avl_node'. In order
to enable the 'List' and 'Avl_tree' to access the meta data, the
'List' must become a friend.
* Instead of adding a virtual destructor to abstract base classes,
we inherit the new 'Interface' class, which contains a virtual
destructor. This way, single-line abstract base classes can stay
as compact as they are now. The 'Interface' utility resides in
base/include/util/interface.h.
* With the new warnings enabled, all member variables must be explicitly
initialized. Basic types may be initialized with '='. All other types
are initialized with braces '{ ... }' or as class initializers. If
basic types and non-basic types appear in a row, it is nice to only
use the brace syntax (also for basic types) and align the braces.
* If a class contains pointers as members, it must now also provide a
copy constructor and assignment operator. In the most cases, one
would make them private, effectively disallowing the objects to be
copied. Unfortunately, this warning cannot be fixed be inheriting
our existing 'Noncopyable' class (the compiler fails to detect that
the inheriting class cannot be copied and still gives the error).
For now, we have to manually add declarations for both the copy
constructor and assignment operator as private class members. Those
declarations should be prepended with a comment like this:
/*
* Noncopyable
*/
Thread(Thread const &);
Thread &operator = (Thread const &);
In the future, we should revisit these places and try to replace
the pointers with references. In the presence of at least one
reference member, the compiler would no longer implicitly generate
a copy constructor. So we could remove the manual declaration.
Issue #465
2017-12-21 15:42:15 +01:00
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friend class List<Cpu_thread_component>;
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friend class Cpu_session_component;
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2016-05-10 18:05:38 +02:00
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Rpc_entrypoint &_ep;
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Pager_entrypoint &_pager_ep;
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Region_map_component &_address_space_region_map;
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Cpu_session::Weight const _weight;
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Session_label const _session_label;
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Thread_name const _name;
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Platform_thread _platform_thread;
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bool const _bound_to_pd;
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bool _bind_to_pd(Pd_session_component &pd)
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{
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if (!pd.bind_thread(_platform_thread))
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throw Cpu_session::Thread_creation_failed();
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return true;
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}
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/**
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* Exception handler as defined by 'Cpu_session::exception_sigh'
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*/
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Follow practices suggested by "Effective C++"
The patch adjust the code of the base, base-<kernel>, and os repository.
To adapt existing components to fix violations of the best practices
suggested by "Effective C++" as reported by the -Weffc++ compiler
argument. The changes follow the patterns outlined below:
* A class with virtual functions can no longer publicly inherit base
classed without a vtable. The inherited object may either be moved
to a member variable, or inherited privately. The latter would be
used for classes that inherit 'List::Element' or 'Avl_node'. In order
to enable the 'List' and 'Avl_tree' to access the meta data, the
'List' must become a friend.
* Instead of adding a virtual destructor to abstract base classes,
we inherit the new 'Interface' class, which contains a virtual
destructor. This way, single-line abstract base classes can stay
as compact as they are now. The 'Interface' utility resides in
base/include/util/interface.h.
* With the new warnings enabled, all member variables must be explicitly
initialized. Basic types may be initialized with '='. All other types
are initialized with braces '{ ... }' or as class initializers. If
basic types and non-basic types appear in a row, it is nice to only
use the brace syntax (also for basic types) and align the braces.
* If a class contains pointers as members, it must now also provide a
copy constructor and assignment operator. In the most cases, one
would make them private, effectively disallowing the objects to be
copied. Unfortunately, this warning cannot be fixed be inheriting
our existing 'Noncopyable' class (the compiler fails to detect that
the inheriting class cannot be copied and still gives the error).
For now, we have to manually add declarations for both the copy
constructor and assignment operator as private class members. Those
declarations should be prepended with a comment like this:
/*
* Noncopyable
*/
Thread(Thread const &);
Thread &operator = (Thread const &);
In the future, we should revisit these places and try to replace
the pointers with references. In the presence of at least one
reference member, the compiler would no longer implicitly generate
a copy constructor. So we could remove the manual declaration.
Issue #465
2017-12-21 15:42:15 +01:00
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Signal_context_capability _session_sigh { };
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2016-05-10 18:05:38 +02:00
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/**
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* Exception handler as defined by 'Cpu_thread::exception_sigh'
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*/
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Follow practices suggested by "Effective C++"
The patch adjust the code of the base, base-<kernel>, and os repository.
To adapt existing components to fix violations of the best practices
suggested by "Effective C++" as reported by the -Weffc++ compiler
argument. The changes follow the patterns outlined below:
* A class with virtual functions can no longer publicly inherit base
classed without a vtable. The inherited object may either be moved
to a member variable, or inherited privately. The latter would be
used for classes that inherit 'List::Element' or 'Avl_node'. In order
to enable the 'List' and 'Avl_tree' to access the meta data, the
'List' must become a friend.
* Instead of adding a virtual destructor to abstract base classes,
we inherit the new 'Interface' class, which contains a virtual
destructor. This way, single-line abstract base classes can stay
as compact as they are now. The 'Interface' utility resides in
base/include/util/interface.h.
* With the new warnings enabled, all member variables must be explicitly
initialized. Basic types may be initialized with '='. All other types
are initialized with braces '{ ... }' or as class initializers. If
basic types and non-basic types appear in a row, it is nice to only
use the brace syntax (also for basic types) and align the braces.
* If a class contains pointers as members, it must now also provide a
copy constructor and assignment operator. In the most cases, one
would make them private, effectively disallowing the objects to be
copied. Unfortunately, this warning cannot be fixed be inheriting
our existing 'Noncopyable' class (the compiler fails to detect that
the inheriting class cannot be copied and still gives the error).
For now, we have to manually add declarations for both the copy
constructor and assignment operator as private class members. Those
declarations should be prepended with a comment like this:
/*
* Noncopyable
*/
Thread(Thread const &);
Thread &operator = (Thread const &);
In the future, we should revisit these places and try to replace
the pointers with references. In the presence of at least one
reference member, the compiler would no longer implicitly generate
a copy constructor. So we could remove the manual declaration.
Issue #465
2017-12-21 15:42:15 +01:00
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Signal_context_capability _thread_sigh { };
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2016-05-10 18:05:38 +02:00
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struct Trace_control_slot
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{
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unsigned index = 0;
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Trace::Control_area &trace_control_area;
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Trace_control_slot(Trace::Control_area &trace_control_area)
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: trace_control_area(trace_control_area)
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{
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if (!trace_control_area.alloc(index))
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Streamline exception types
This patch reduces the number of exception types by facilitating
globally defined exceptions for common usage patterns shared by most
services. In particular, RPC functions that demand a session-resource
upgrade not longer reflect this condition via a session-specific
exception but via the 'Out_of_ram' or 'Out_of_caps' types.
Furthermore, the 'Parent::Service_denied', 'Parent::Unavailable',
'Root::Invalid_args', 'Root::Unavailable', 'Service::Invalid_args',
'Service::Unavailable', and 'Local_service::Factory::Denied' types have
been replaced by the single 'Service_denied' exception type defined in
'session/session.h'.
This consolidation eases the error handling (there are fewer exceptions
to handle), alleviates the need to convert exceptions along the
session-creation call chain, and avoids possible aliasing problems
(catching the wrong type with the same name but living in a different
scope).
2017-05-07 22:03:22 +02:00
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throw Out_of_ram();
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2016-05-10 18:05:38 +02:00
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}
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~Trace_control_slot()
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{
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trace_control_area.free(index);
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}
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Trace::Control &control()
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{
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return *trace_control_area.at(index);
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}
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};
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Trace_control_slot _trace_control_slot;
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Trace::Source _trace_source { *this, _trace_control_slot.control() };
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Trace::Source_registry &_trace_sources;
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Rm_client _rm_client;
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/**
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* Propagate exception handler to platform thread
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*/
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void _update_exception_sigh();
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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 managing the thread RPC
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* object
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* \param pager_ep pager entrypoint used for handling the page
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* faults of the thread
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* \param pd PD session where the thread is executed
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* \param weight scheduling weight relative to the other
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* threads of the same CPU session
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* \param quota initial quota counter-value of the weight
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* \param labal label of the threads session
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* \param name name for the thread
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* \param priority scheduling priority
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* \param utcb user-local UTCB base
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*/
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Cpu_thread_component(Cpu_session_capability cpu_session_cap,
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Rpc_entrypoint &ep,
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Pager_entrypoint &pager_ep,
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Pd_session_component &pd,
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Trace::Control_area &trace_control_area,
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Trace::Source_registry &trace_sources,
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Cpu_session::Weight weight,
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size_t quota,
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Affinity::Location location,
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Session_label const &label,
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Thread_name const &name,
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unsigned priority,
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addr_t utcb)
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:
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2017-05-26 15:40:30 +02:00
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_ep(ep), _pager_ep(pager_ep),
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2016-05-10 18:05:38 +02:00
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_address_space_region_map(pd.address_space_region_map()),
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_weight(weight),
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_session_label(label), _name(name),
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_platform_thread(quota, name.string(), priority, location, utcb),
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_bound_to_pd(_bind_to_pd(pd)),
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_trace_control_slot(trace_control_area),
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_trace_sources(trace_sources),
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_rm_client(cpu_session_cap, _ep.manage(this),
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base/core: use references instead of pointers
This patch replaces the former prominent use of pointers by references
wherever feasible. This has the following benefits:
* The contract between caller and callee becomes more obvious. When
passing a reference, the contract says that the argument cannot be
a null pointer. The caller is responsible to ensure that. Therefore,
the use of reference eliminates the need to add defensive null-pointer
checks at the callee site, which sometimes merely exist to be on the
safe side. The bottom line is that the code becomes easier to follow.
* Reference members must be initialized via an object initializer,
which promotes a programming style that avoids intermediate object-
construction states. Within core, there are still a few pointers
as member variables left though. E.g., caused by the late association
of 'Platform_thread' objects with their 'Platform_pd' objects.
* If no pointers are present as member variables, we don't need to
manually provide declarations of a private copy constructor and
an assignment operator to avoid -Weffc++ errors "class ... has
pointer data members [-Werror=effc++]".
This patch also changes a few system bindings on NOVA and Fiasco.OC,
e.g., the return value of the global 'cap_map' accessor has become a
reference. Hence, the patch touches a few places outside of core.
Fixes #3135
2019-01-24 22:00:01 +01:00
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_address_space_region_map,
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2016-05-10 18:05:38 +02:00
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_platform_thread.pager_object_badge(),
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2017-08-14 11:32:07 +02:00
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_platform_thread.affinity(),
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2016-09-05 11:24:51 +02:00
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pd.label(), name)
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2016-05-10 18:05:38 +02:00
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{
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_address_space_region_map.add_client(_rm_client);
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2017-02-23 08:36:32 +01:00
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/*
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* Acquaint thread with its pager object, caution on some base platforms
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Streamline exception types
This patch reduces the number of exception types by facilitating
globally defined exceptions for common usage patterns shared by most
services. In particular, RPC functions that demand a session-resource
upgrade not longer reflect this condition via a session-specific
exception but via the 'Out_of_ram' or 'Out_of_caps' types.
Furthermore, the 'Parent::Service_denied', 'Parent::Unavailable',
'Root::Invalid_args', 'Root::Unavailable', 'Service::Invalid_args',
'Service::Unavailable', and 'Local_service::Factory::Denied' types have
been replaced by the single 'Service_denied' exception type defined in
'session/session.h'.
This consolidation eases the error handling (there are fewer exceptions
to handle), alleviates the need to convert exceptions along the
session-creation call chain, and avoids possible aliasing problems
(catching the wrong type with the same name but living in a different
scope).
2017-05-07 22:03:22 +02:00
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* this may raise an 'Out_of_ram' exception, which causes the
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2017-02-23 08:36:32 +01:00
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* destructor of this object to not being called. Catch it and remove this
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* object from the object pool
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*/
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try {
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base/core: use references instead of pointers
This patch replaces the former prominent use of pointers by references
wherever feasible. This has the following benefits:
* The contract between caller and callee becomes more obvious. When
passing a reference, the contract says that the argument cannot be
a null pointer. The caller is responsible to ensure that. Therefore,
the use of reference eliminates the need to add defensive null-pointer
checks at the callee site, which sometimes merely exist to be on the
safe side. The bottom line is that the code becomes easier to follow.
* Reference members must be initialized via an object initializer,
which promotes a programming style that avoids intermediate object-
construction states. Within core, there are still a few pointers
as member variables left though. E.g., caused by the late association
of 'Platform_thread' objects with their 'Platform_pd' objects.
* If no pointers are present as member variables, we don't need to
manually provide declarations of a private copy constructor and
an assignment operator to avoid -Weffc++ errors "class ... has
pointer data members [-Werror=effc++]".
This patch also changes a few system bindings on NOVA and Fiasco.OC,
e.g., the return value of the global 'cap_map' accessor has become a
reference. Hence, the patch touches a few places outside of core.
Fixes #3135
2019-01-24 22:00:01 +01:00
|
|
|
_pager_ep.manage(_rm_client);
|
2017-02-23 08:36:32 +01:00
|
|
|
} catch (...) {
|
|
|
|
|
_ep.dissolve(this);
|
|
|
|
|
throw;
|
|
|
|
|
}
|
|
|
|
|
|
base/core: use references instead of pointers
This patch replaces the former prominent use of pointers by references
wherever feasible. This has the following benefits:
* The contract between caller and callee becomes more obvious. When
passing a reference, the contract says that the argument cannot be
a null pointer. The caller is responsible to ensure that. Therefore,
the use of reference eliminates the need to add defensive null-pointer
checks at the callee site, which sometimes merely exist to be on the
safe side. The bottom line is that the code becomes easier to follow.
* Reference members must be initialized via an object initializer,
which promotes a programming style that avoids intermediate object-
construction states. Within core, there are still a few pointers
as member variables left though. E.g., caused by the late association
of 'Platform_thread' objects with their 'Platform_pd' objects.
* If no pointers are present as member variables, we don't need to
manually provide declarations of a private copy constructor and
an assignment operator to avoid -Weffc++ errors "class ... has
pointer data members [-Werror=effc++]".
This patch also changes a few system bindings on NOVA and Fiasco.OC,
e.g., the return value of the global 'cap_map' accessor has become a
reference. Hence, the patch touches a few places outside of core.
Fixes #3135
2019-01-24 22:00:01 +01:00
|
|
|
_platform_thread.pager(_rm_client);
|
2016-05-10 18:05:38 +02:00
|
|
|
_trace_sources.insert(&_trace_source);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
~Cpu_thread_component()
|
|
|
|
|
{
|
|
|
|
|
_trace_sources.remove(&_trace_source);
|
base/core: use references instead of pointers
This patch replaces the former prominent use of pointers by references
wherever feasible. This has the following benefits:
* The contract between caller and callee becomes more obvious. When
passing a reference, the contract says that the argument cannot be
a null pointer. The caller is responsible to ensure that. Therefore,
the use of reference eliminates the need to add defensive null-pointer
checks at the callee site, which sometimes merely exist to be on the
safe side. The bottom line is that the code becomes easier to follow.
* Reference members must be initialized via an object initializer,
which promotes a programming style that avoids intermediate object-
construction states. Within core, there are still a few pointers
as member variables left though. E.g., caused by the late association
of 'Platform_thread' objects with their 'Platform_pd' objects.
* If no pointers are present as member variables, we don't need to
manually provide declarations of a private copy constructor and
an assignment operator to avoid -Weffc++ errors "class ... has
pointer data members [-Werror=effc++]".
This patch also changes a few system bindings on NOVA and Fiasco.OC,
e.g., the return value of the global 'cap_map' accessor has become a
reference. Hence, the patch touches a few places outside of core.
Fixes #3135
2019-01-24 22:00:01 +01:00
|
|
|
_pager_ep.dissolve(_rm_client);
|
2016-05-10 18:05:38 +02:00
|
|
|
_ep.dissolve(this);
|
|
|
|
|
|
|
|
|
|
_address_space_region_map.remove_client(_rm_client);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/********************************************
|
|
|
|
|
** Trace::Source::Info_accessor interface **
|
|
|
|
|
********************************************/
|
|
|
|
|
|
2019-02-14 22:39:08 +01:00
|
|
|
Trace::Source::Info trace_source_info() const override
|
2016-05-10 18:05:38 +02:00
|
|
|
{
|
|
|
|
|
return { _session_label, _name,
|
|
|
|
|
_platform_thread.execution_time(),
|
|
|
|
|
_platform_thread.affinity() };
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/************************
|
|
|
|
|
** Accessor functions **
|
|
|
|
|
************************/
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* Define default exception handler installed for the CPU session
|
|
|
|
|
*/
|
|
|
|
|
void session_exception_sigh(Signal_context_capability);
|
|
|
|
|
|
|
|
|
|
void quota(size_t);
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* Called by platform-specific 'Native_cpu' operations
|
|
|
|
|
*/
|
|
|
|
|
Platform_thread &platform_thread() { return _platform_thread; }
|
|
|
|
|
|
|
|
|
|
size_t weight() const { return _weight.value; }
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/**************************
|
|
|
|
|
** CPU thread interface **
|
|
|
|
|
*************************/
|
|
|
|
|
|
|
|
|
|
Dataspace_capability utcb() override;
|
|
|
|
|
void start(addr_t, addr_t) override;
|
|
|
|
|
void pause() override;
|
|
|
|
|
void resume() override;
|
|
|
|
|
void single_step(bool) override;
|
|
|
|
|
void cancel_blocking() override;
|
|
|
|
|
Thread_state state() override;
|
|
|
|
|
void state(Thread_state const &) override;
|
|
|
|
|
void exception_sigh(Signal_context_capability) override;
|
|
|
|
|
void affinity(Affinity::Location) override;
|
|
|
|
|
unsigned trace_control_index() override;
|
|
|
|
|
Dataspace_capability trace_buffer() override;
|
|
|
|
|
Dataspace_capability trace_policy() override;
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
#endif /* _CORE__INCLUDE__CPU_THREAD_COMPONENT_H_ */
|
