Vogon Fleet: implementation: Added environment, concrete_environment, a

placeholder for the ready queue, needed by environment, and factorized
stubs for tests in a separate directory. Updated makefile including environment, concrete_environment, ready_queue, but NOT the stubs and/or the tests.


git-svn-id: svn://svn.gna.org/svn/sgpemv2/trunk@685 3ecf2c5c-341e-0410-92b4-d18e462d057c
This commit is contained in:
matrevis 2006-07-02 00:52:01 +00:00
parent 36f62cbb8d
commit 53da6e4bb8
13 changed files with 1198 additions and 1 deletions

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@ -144,12 +144,14 @@ src_backend_libbackend_la_LDFLAGS = \
# Please keep this in sorted order: # Please keep this in sorted order:
src_backend_libbackend_la_SOURCES = \ src_backend_libbackend_la_SOURCES = \
src/backend/concrete_environment.cc \
src/backend/dynamic_process.cc \ src/backend/dynamic_process.cc \
src/backend/dynamic_request.cc \ src/backend/dynamic_request.cc \
src/backend/dynamic_resource.cc \ src/backend/dynamic_resource.cc \
src/backend/dynamic_schedulable.cc \ src/backend/dynamic_schedulable.cc \
src/backend/dynamic_sub_request.cc \ src/backend/dynamic_sub_request.cc \
src/backend/dynamic_thread.cc \ src/backend/dynamic_thread.cc \
src/backend/environment.cc \
src/backend/global_preferences.cc \ src/backend/global_preferences.cc \
src/backend/history.cc \ src/backend/history.cc \
src/backend/observed_subject.cc \ src/backend/observed_subject.cc \
@ -158,6 +160,7 @@ src_backend_libbackend_la_SOURCES = \
src/backend/policy_manager.cc \ src/backend/policy_manager.cc \
src/backend/policy_parameters.cc \ src/backend/policy_parameters.cc \
src/backend/process.cc \ src/backend/process.cc \
src/backend/ready_queue.cc \
src/backend/request.cc \ src/backend/request.cc \
src/backend/resource.cc \ src/backend/resource.cc \
src/backend/schedulable.cc \ src/backend/schedulable.cc \
@ -179,6 +182,7 @@ src_backend_libbackend_la_SOURCES = \
# For headers used internally by the backend, see below. # For headers used internally by the backend, see below.
pkginclude_HEADERS += \ pkginclude_HEADERS += \
config.h \ config.h \
src/backend/environment.hh \
src/backend/global_preferences.hh \ src/backend/global_preferences.hh \
src/backend/history.hh \ src/backend/history.hh \
src/backend/observed_subject.hh \ src/backend/observed_subject.hh \
@ -187,6 +191,7 @@ pkginclude_HEADERS += \
src/backend/policy.hh \ src/backend/policy.hh \
src/backend/policy_manager.hh \ src/backend/policy_manager.hh \
src/backend/policy_parameters.hh \ src/backend/policy_parameters.hh \
src/backend/ready_queue.hh \
src/backend/request.hh \ src/backend/request.hh \
src/backend/resource.hh \ src/backend/resource.hh \
src/backend/process.hh \ src/backend/process.hh \
@ -201,6 +206,7 @@ pkginclude_HEADERS += \
# Put here headers used internally by the backend # Put here headers used internally by the backend
# They won't be installed for the end-user. # They won't be installed for the end-user.
noinst_HEADERS += \ noinst_HEADERS += \
src/backend/concrete_environment.hh \
src/backend/dynamic_process.hh \ src/backend/dynamic_process.hh \
src/backend/dynamic_request.hh \ src/backend/dynamic_request.hh \
src/backend/dynamic_resource.hh \ src/backend/dynamic_resource.hh \
@ -328,6 +334,10 @@ src_testsuite_test_history_SOURCES = \
# src/backend/libbackend.la \ # src/backend/libbackend.la \
# $(GLIBMM_LIBS) # $(GLIBMM_LIBS)
#src_testsuite_test_stepforward_SOURCES = \ #src_testsuite_test_stepforward_SOURCES = \
# src/testsuite/stubs/history.cc \
# src/testsuite/stubs/prrpolicy.cc \
# src/testsuite/stubs/policy_manager.cc \
# src/backend/scheduler.cc \
# src/testsuite/test-stepforward.cc # src/testsuite/test-stepforward.cc

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@ -0,0 +1,149 @@
// src/backend/resource.cc - Copyright 2005, 2006, University
// of Padova, dept. of Pure and Applied
// Mathematics
//
// This file is part of SGPEMv2.
//
// This is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// SGPEMv2 is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with SGPEMv2; if not, write to the Free Software
// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
#include "concrete_environment.hh"
#include <iterator>
using namespace sgpem;
ConcreteEnvironment::ConcreteEnvironment()
{
// Nothing to do here. Really.
}
ConcreteEnvironment::ConcreteEnvironment(const ConcreteEnvironment & c) :
Environment(c), _sched_queue(c._sched_queue)
{
// DynamicRequest objects never change, so there is no need to keep
// a separate copy for each instant of the simulation, therefore
// we simply copy the map.
// Actually we may even avoid copiying the map, but this would not
// be worth the effort (too much code to change)
// Anyway, this causes much trouble when coming to destruction, see.
_resources = c._resources;
// DynamicProcess object need to be copied.
// The deep copy is guaranteed by the DynamicProcess copy constructor
std::vector<Process *>::const_iterator iter = c._processes.begin();
while (iter != c._processes.end())
{
DynamicProcess * current = dynamic_cast<DynamicProcess *>(*iter++);
_processes.push_back(new DynamicProcess(*current));
}
// The ready queue needs to be copied, too.
// This implementation relies on the copy constructor
// which is explicit in the initialization list
}
const std::vector<Process *>
ConcreteEnvironment::get_processes() const
{
return _processes;
}
std::vector<Process *>
ConcreteEnvironment::get_processes()
{
return _processes;
}
const std::map<int, Resource *>
ConcreteEnvironment::get_resources() const
{
return _resources;
}
std::map<int, Resource *>
ConcreteEnvironment::get_resources()
{
return _resources;
}
const std::vector<Request *>
ConcreteEnvironment::get_request_queue(Resource * resource) const
{
std::vector<Request *> request_queue;
// TODO: fill that vector, walking over the classes, looking for
// those no-more-valid requests.
return request_queue;
}
const ReadyQueue *
ConcreteEnvironment::get_sorted_queue() const
{
return &_sched_queue;
}
ReadyQueue *
ConcreteEnvironment::get_sorted_queue()
{
return &_sched_queue;
}
ConcreteEnvironment::~ConcreteEnvironment()
{
std::vector<Process *>::iterator iter = _processes.begin();
while (iter != _processes.end())
{
// This call will invoke the DynamicProcess virtual destructor
// Which will delete on cascade all DynamicThreads and so on.
delete *iter++;
// The iterator is still valid, since the pointed object is not,
// but the pointer is.
}
// After this, the destructor of _sched_queue is invoked
// After that, the destructor of _processes is invoked
// After that, the destructor of _resources is invoked
// The current implementation does not destroy the DynamicResource
// objects, as they are shared among all the DynamicEnvironment
// objects. This means that if none deletes them when deleting the
// last DynamicEnvironment object, we have a memory leak.
// And we do have one, since none by now cares for this. Maybe
// History will. Anyway, this is not nice, so please FIXME.
}
void
ConcreteEnvironment::serialize(SerializeVisitor& translator) const
{
// TODO: call something like translator.serializeEnvironment(this);
}

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@ -0,0 +1,222 @@
// src/backend/resource.hh - Copyright 2005, 2006, University
// of Padova, dept. of Pure and Applied
// Mathematics
//
// This file is part of SGPEMv2.
//
// This is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// SGPEMv2 is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with SGPEMv2; if not, write to the Free Software
// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
#ifndef CONCRETE_ENVIRONMENT_HH
#define CONCRETE_ENVIRONMENT_HH 1
#include "config.h"
#include "environment.hh"
#include "resource.hh"
#include "dynamic_process.hh"
#include "dynamic_request.hh"
#include "ready_queue.hh"
namespace sgpem
{
class SerializeVisitor;
/// \brief An implementation of the Environment class
/// Class ConcreteEnvironment implements the Environment
/// abstract class.
///
/// This implementation actually contains the collections
/// of snapshots accessed by the function members defined
/// in the Environment class.
///
/// \see Environment
class ConcreteEnvironment : public Environment
{
public:
/// \brief Standard constructor.
/// Builds an empty environment.
ConcreteEnvironment();
/// \brief Copy constructor.
/// Performs a deep copy of all structures.
ConcreteEnvironment(const ConcreteEnvironment & c);
/// \brief Returns an indexed set of snapshots of the processes
/// Returns a standard vector of Process objects describing
/// all the processes of the simulated environment at the
/// considered instant.
///
/// The Process objects returned are actually DynamicProcess
/// objects. A downcast to DynamicProcess is guaranteed to be
/// always safe.
///
/// \return a constant set of snapshots of processes
virtual const std::vector<Process *>
get_processes() const;
/// \brief Non-constant version of get_processes()
///
/// \return a set of snapshots of processes
/// \see get_processes()
virtual std::vector<Process *>
get_processes();
/// \brief Returns an indexed set of snapshots of the resources
/// Returns a standard map of \code int \endcode to Resource
/// objects describing the all resources of the simulated environment
/// at the considered instant.
///
/// The set is indexed in order to allow retreiving the requested
/// resource of a SubRequest object.
///
/// Future implementation may provide a cleaner implementation, i.e.
/// a \code get_request \endcode function member in the SubRequest
/// class which returns the Resource object indexed.
///
/// The Resource objects returned are actually DynamicResource
/// objects. A downcast to DynamicResource is guaranteed to be
/// always safe.
///
/// \return a indexed constant set of snapshot of resources.
/// \see DynamicSybrequest::get_resource()
virtual const std::map<int, Resource *>
get_resources() const;
/// \brief Non-constant version of get_resources()
///
/// \return an indexed set of snapshots of resources
/// \see get_resources()
virtual std::map<int, Resource *>
get_resources();
/// \brief Returns a snapshot of the current request queue for a resource.
/// Returns a standard vector of Request objects
/// representing the queue of ready requests of threads which
/// are waiting for getting control of a limited-access resource.
///
/// The Request objects returned are actually DynamicRequest
/// objects. A downcast to DynamicRequest is guaranteed to be
/// always safe.
///
/// \param resource the resource the requests are for
/// \return the current ready requests queue.
virtual const std::vector<Request *>
get_request_queue(Resource * resource) const;
/// \brief Returns a snapshot of the current scheduler's ready queue.
/// Returns a ReadyQueue object representing the queue
/// of ready processes or ready threads, depending on the
/// scheduling policy, which are waiting for getting control
/// of the CPU.
///
/// \return the current ready queue (constant).
virtual const ReadyQueue *
get_sorted_queue() const;
/// \brief Non-constant version of get_sorted_queue()
///
/// \return the current ready queue.
/// \see get_sorted_queue()
virtual ReadyQueue *
get_sorted_queue();
/// \brief The standard virtual destructor.
/// The standard virtual destructor.
virtual
~ConcreteEnvironment();
/// \brief Serializes the whole environment.
/// \see SerializeVisitor
virtual void
serialize(SerializeVisitor& translator) const;
private:
/// \brief The container of all Resource objecs.
/// Actually contains only DynamicResource objects.
// resources come before processes because of
// destruction order. See destructor implementation
std::map<int, Resource *>
_resources;
/// \brief The container of all Process objecs.
/// Actually contains only DynamicProcess objects.
std::vector<Process *>
_processes;
/// \brief The queue of the ready schedulables
/// Does not contain the running process.
ReadyQueue
_sched_queue;
};
}
#endif

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@ -0,0 +1,28 @@
// src/backend/resource.cc - Copyright 2005, 2006, University
// of Padova, dept. of Pure and Applied
// Mathematics
//
// This file is part of SGPEMv2.
//
// This is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// SGPEMv2 is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with SGPEMv2; if not, write to the Free Software
// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
#include "environment.hh"
using namespace sgpem;
Environment::~Environment()
{}

120
src/backend/environment.hh Normal file
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@ -0,0 +1,120 @@
// src/backend/resource.hh - Copyright 2005, 2006, University
// of Padova, dept. of Pure and Applied
// Mathematics
//
// This file is part of SGPEMv2.
//
// This is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// SGPEMv2 is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with SGPEMv2; if not, write to the Free Software
// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
#ifndef ENVIRONMENT_HH
#define ENVIRONMENT_HH 1
#include "config.h"
#include <vector>
#include <map>
namespace sgpem
{
class ReadyQueue;
class Process;
class Request;
class Resource;
/// \brief An instant of the simulation.
/// An object of the Environment class represents a snapshot of
/// the simulated environment taken in a fixed instant, composed
/// by processes, threads, resources and more.
/// A snapshot for every single entity is accessible from here.
/// All the provided objects and data is constant.
///
/// Class History provides access to Environments for each instant
/// of the simulation.
///
/// Anyway, as well as the returned collections contain non-const
/// pointers, it will be possible to call non-const member functions
/// on these objects. This has no consequences until someone adds
/// non-const member functions to these classes.
///
/// This class is abstract: it provides the public interface to
/// read the content of an History.
/// \see History
class SG_DLLEXPORT Environment
{
public:
/// \brief Returns an indexed set of snapshots of the processes
/// Returns a standard vector of Process objects describing
/// all the processes of the simulated environment at the
/// considered instant.
///
/// \return a constant set of snapshots of processes
virtual std::vector<Process *> const
get_processes() const = 0;
/// \brief Returns an indexed set of snapshots of the resources
/// Returns a standard map of \code int \endcode to Resource
/// objects describing the all resources of the simulated environment
/// at the considered instant.
///
/// The set is indexed in order to allow retreiving the requested
/// resource of a SubRequest object.
///
/// Future implementation may provide a cleaner implementation, i.e.
/// a \code get_request \endcode function member in the SubRequest
/// class which returns the Resource object indexed.
///
/// \return an indexed constant set of snapshot of resources.
virtual std::map<int, Resource *> const
get_resources() const = 0;
/// \brief Returns a snapshot of the current request queue for a resource.
/// Returns a standard vector of Request objects
/// representing the queue of ready requests of threads which
/// are waiting for getting control of a limited-access resource.
/// \param resource the resource the requests are for
/// \return the current ready requests queue (constant).
virtual std::vector<Resource *> const
get_request_queue(const Resource * resource) const = 0;
/// \brief Returns a snapshot of the current scheduler's ready queue.
/// Returns a ReadyQueue object representing the queue
/// of ready processes or ready threads, depending on the
/// scheduling policy, which are waiting for getting control
/// of the CPU.
/// \return the current ready queue (constant).
virtual const ReadyQueue *
get_sorted_queue() const = 0;
/// \brief The standard virtual destructor.
/// The standard virtual destructor.
virtual
~Environment();
};
}
#endif

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@ -0,0 +1,27 @@
// src/backend/resource.cc - Copyright 2005, 2006, University
// of Padova, dept. of Pure and Applied
// Mathematics
//
// This file is part of SGPEMv2.
//
// This is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// SGPEMv2 is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with SGPEMv2; if not, write to the Free Software
// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
#include "ready_queue.hh"
using namespace sgpem;
ReadyQueue::~ReadyQueue()
{}

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@ -0,0 +1,41 @@
// src/backend/resource.hh - Copyright 2005, 2006, University
// of Padova, dept. of Pure and Applied
// Mathematics
//
// This file is part of SGPEMv2.
//
// This is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// SGPEMv2 is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with SGPEMv2; if not, write to the Free Software
// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
#ifndef READY_QUEUE_HH
#define READY_QUEUE_HH 1
#include "config.h"
#include "glibmm/ustring.h"
namespace sgpem
{
class SG_DLLEXPORT ReadyQueue
{
public:
virtual
~ReadyQueue();
};
}
#endif

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@ -0,0 +1,113 @@
// src/testsuite/test-stepforward.cc - Copyright 2005, 2006, University
// of Padova, dept. of Pure and Applied
// Mathematics
//
// This file is part of SGPEMv2.
//
// This is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// SGPEMv2 is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with SGPEMv2; if not, write to the Free Software
// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
#include "history.hh"
using namespace sgpem;
memory::smart_ptr<sgpem::DynamicSchedulable>
History::get_scheduled_at(int time) const
{
using namespace memory;
smart_ptr<DynamicSchedulable> scheduled_at = smart_ptr<DynamicSchedulable>();
if (0 <= time && time <= _total_time_elapsed)
{
smart_ptr<SchedulableQueue> sl = get_simulation_status_at(time);
bool found = false;
bool invalid = sl == smart_ptr<SchedulableQueue>();
for (uint i = 0; !found && !invalid && i < sl->size(); i++)
{
const DynamicSchedulable* ss = sl->get_item_at(i);
if ((bool)ss && ss->get_state() == DynamicSchedulable::state_running)
{
scheduled_at = smart_ptr<DynamicSchedulable>(new DynamicSchedulable(*(ss)));
found = true;
}
}
}
return scheduled_at;
}
memory::smart_ptr<sgpem::SchedulableQueue>
History::get_simulation_status_at(int time) const
{
using namespace memory;
smart_ptr<SchedulableQueue> simulation_status_at = smart_ptr<SchedulableQueue>();
if (0 <= time && time <= _total_time_elapsed)
{
if (_slice == memory::smart_ptr<Slice>())
std::cout<<"History::get_simulation_status_at.NULL.error";
else
simulation_status_at = memory::smart_ptr<SchedulableQueue>
(
new SchedulableQueue
(
*(_slice->get_simulation_status())
)
);
}
return simulation_status_at;
}
int
History::get_current_time() const
{
return _total_time_elapsed;
}
void
History::enqueue_slice(const sgpem::SchedulableQueue& status)
{
_slice = memory::smart_ptr<Slice>(new Slice(_total_time_elapsed, 1, status));
_total_time_elapsed++;
}
void
History::truncate_at(int instant)
{
//std::cout << "\nRecreating a Singleton History";
_slice = memory::smart_ptr<Slice>();
_total_time_elapsed = -1;
}
History&
History::get_instance()
{
if (History::_instance == NULL)
History::_instance = new History();
return *History::_instance;
}
History::History()
{
_slice = memory::smart_ptr<Slice>();
_total_time_elapsed = -1;
}
History * History::_instance = NULL;

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@ -0,0 +1,111 @@
// src/testsuite/test-stepforward.cc - Copyright 2005, 2006, University
// of Padova, dept. of Pure and Applied
// Mathematics
//
// This file is part of SGPEMv2.
//
// This is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// SGPEMv2 is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with SGPEMv2; if not, write to the Free Software
// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
#ifndef HISTORY_HH
#define HISTORY_HH 1
#include "backend/observed_subject.hh"
#include "backend/slice.hh"
#include "backend/schedulable_queue.hh"
#include "templates/smartp.tcc"
#include <iostream>
/*
#include <glibmm/module.h> // ??
#include <cassert>
#include <string>
#include "config.h"
#include "gettext.h"
#include "glibmm/ustring.h"
#include <vector>
#include "backend/static_process.hh"
#include "backend/dynamic_schedulable.hh"
#include "backend/user_interrupt_exception.hh"
#include "backend/policy.hh"
#include "prrpolicy.cc"
#include <iostream>
*/
namespace sgpem
{
/** an History stub, should only save the last state included.
*/
class History : public ObservedSubject
{
public:
/** Returns the DynamicSchedulable of the schedulable
* which was running at the time, if any.
*/
memory::smart_ptr<sgpem::DynamicSchedulable>
get_scheduled_at(int time) const;
/** Returns the last recorded instant, but may raise an error.
*/
memory::smart_ptr<sgpem::SchedulableQueue>
get_simulation_status_at(int time) const;
/** Returns the total time recorded.
*/
int
get_current_time() const;
/** Extends the recorded history by one unit, overwriting the old value
*/
void
enqueue_slice(const sgpem::SchedulableQueue& status);
/** STUB: THIS FEATURE IS NOT AVAILABLE
*/
void
truncate_at(int instant);
/** Returns the singleton instance.
*/
static History&
get_instance();
private:
History();
static History * _instance;
int _total_time_elapsed;
memory::smart_ptr<Slice> _slice;
};
} //~ namespace sgpem
#endif

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// src/testsuite/test-stepforward.cc - Copyright 2005, 2006, University
// of Padova, dept. of Pure and Applied
// Mathematics
//
// This file is part of SGPEMv2.
//
// This is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// SGPEMv2 is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with SGPEMv2; if not, write to the Free Software
// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
#include "policy_manager.hh"
using namespace sgpem;
PolicyManager::PolicyManager()
{}
PolicyManager&
PolicyManager::get_registered_manager()
{
if (_registered == NULL)
_registered = new PolicyManager();
return *_registered;
}
Policy&
PolicyManager::get_policy()
{
return PRRPolicy::get_instance();
}
void
PolicyManager::init()
{}
PolicyManager::~PolicyManager()
{
if(_registered == this) _registered = NULL;
}
PolicyManager*
PolicyManager::_registered = NULL;

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@ -0,0 +1,73 @@
// src/testsuite/test-stepforward.cc - Copyright 2005, 2006, University
// of Padova, dept. of Pure and Applied
// Mathematics
//
// This file is part of SGPEMv2.
//
// This is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// SGPEMv2 is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with SGPEMv2; if not, write to the Free Software
// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
#ifndef POLICY_MANAGER_HH
#define POLICY_MANAGER_HH 1
#include "prrpolicy.hh"
/*
#include <glibmm/module.h> // ??
#include <cassert>
#include <string>
#include "config.h"
#include "gettext.h"
#include "glibmm/ustring.h"
#include <vector>
#include <iostream>
#include "backend/static_process.hh"
#include "backend/observed_subject.hh"
#include "backend/schedulable_queue.hh"
#include "backend/dynamic_schedulable.hh"
#include "templates/smartp.tcc"
#include "backend/user_interrupt_exception.hh"
#include "backend/policy.hh"
#include "backend/slice.hh"
#include "prrpolicy.cc"
#include <iostream>
*/
namespace sgpem
{
/** A policyManager stub, provides access to the PRRPolicy.
*/
class PolicyManager
{
public:
PolicyManager();
static PolicyManager&
get_registered_manager();
virtual Policy&
get_policy();
virtual void
init();
virtual
~PolicyManager();
private:
static PolicyManager* _registered;
};
}
#endif

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// src/testsuite/test-stepforward.cc - Copyright 2005, 2006, University
// of Padova, dept. of Pure and Applied
// Mathematics
//
// This file is part of SGPEMv2.
//
// This is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// SGPEMv2 is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with SGPEMv2; if not, write to the Free Software
// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
#include "prrpolicy.hh"
using namespace sgpem;
PRRPolicy::PRRPolicy()
{
_instance = this;
}
PRRPolicy::PRRPolicy(int quantum)
: _quantum(quantum)
{
_instance = this;
}
Policy&
PRRPolicy::get_instance()
{
if(_instance == NULL) _instance = new PRRPolicy(3); // quantum size
return *_instance;
}
PRRPolicy::~PRRPolicy()
{}
void
PRRPolicy::configure()
throw(UserInterruptException)
{}
void
PRRPolicy::sort_queue() const
throw(UserInterruptException)
{
SchedulableQueue* local_sl = Scheduler::get_instance().get_ready_queue();
for (uint useless = 0; useless < local_sl->size(); useless++)
for (uint i = 0; i < local_sl->size() - 1; i++)
if
(
local_sl->get_item_at(i)->get_schedulable()->get_priority() >
local_sl->get_item_at(i + 1)->get_schedulable()->get_priority()
)
local_sl->swap(i, i + 1);
}
void
PRRPolicy::activate()
{}
void
PRRPolicy::deactivate()
{}
int
PRRPolicy::get_id() const
{
return 42;
}
sgpem::policy_sorts_type
PRRPolicy::wants() const
throw(UserInterruptException)
{
return policy_sorts_processes;
}
Glib::ustring
PRRPolicy::get_name() const
{
return "42";
}
Glib::ustring
PRRPolicy::get_description() const
{
return "42";
}
bool
PRRPolicy::is_pre_emptive() const
throw(UserInterruptException)
{
return 1;
}
int
PRRPolicy::get_time_slice() const
throw(UserInterruptException)
{
return _quantum;
}
PolicyParameters&
PRRPolicy::get_parameters()
{
return _parameters;
}
Policy*
PRRPolicy::_instance = NULL;

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// src/testsuite/test-stepforward.cc - Copyright 2005, 2006, University
// of Padova, dept. of Pure and Applied
// Mathematics
//
// This file is part of SGPEMv2.
//
// This is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// SGPEMv2 is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with SGPEMv2; if not, write to the Free Software
// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
#ifndef PRRPOLICY_HH
#define PRRPOLICY_HH 1
#include "backend/policy.hh"
#include "backend/user_interrupt_exception.hh"
#include "backend/schedulable_queue.hh"
#include "backend/scheduler.hh"
#include "glibmm/ustring.h"
/*
#include <string>
#include "config.h"
#include "gettext.h"
#include <vector>
#include <iostream>
#include "backend/static_process.hh"
#include "backend/observed_subject.hh"
#include "backend/dynamic_schedulable.hh"
#include "templates/smartp.tcc"
#include "backend/user_interrupt_exception.hh"
#include "backend/slice.hh"
#include <iostream>
*/
namespace sgpem
{
/** An hard-coded Priority Round Robin policy
* It's actually called PRRPolicy, altough my personal taste would have suggested
* naming it
* Prioriy-Reliant Roughly-Realized Recently-Reimplemented Round-Robin Policy,
* i.e. PRRRRRRR-Policy.
* it adds a new constructor taking the quantum size (time slice)
*/
class PRRPolicy : public Policy
{
public:
PRRPolicy();
PRRPolicy(int quantum);
static Policy&
get_instance();
virtual
~PRRPolicy();
virtual void
configure()
throw(UserInterruptException);
virtual void
sort_queue() const
throw(UserInterruptException);
virtual void
activate();
virtual void
deactivate();
virtual int
get_id() const;
virtual sgpem::policy_sorts_type
wants() const
throw(UserInterruptException);
virtual Glib::ustring
get_name() const;
virtual Glib::ustring
get_description() const;
virtual bool
is_pre_emptive() const
throw(UserInterruptException);
virtual int
get_time_slice() const
throw(UserInterruptException);
virtual PolicyParameters&
get_parameters();
protected:
PolicyParameters _parameters;
int _id;
int _quantum;
private:
static Policy* _instance;
};
}
#endif