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- added scheduler and other incomplete backend classes 

git-svn-id: svn://svn.gna.org/svn/sgpemv2/trunk@319 3ecf2c5c-341e-0410-92b4-d18e462d057c
This commit is contained in:
fpaparel 2006-02-12 17:12:54 +00:00
parent 98cc6fb20b
commit e2a0c3f248
21 changed files with 820 additions and 237 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
src/Makefile.am
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@ -51,6 +51,7 @@ sgpemv2_SOURCES = \
graphical_terminal_io.cc \ graphical_terminal_io.cc \
main.cc \ main.cc \
main_window.cc \ main_window.cc \
observer.cc \
parse_opts.cc \ parse_opts.cc \
start_gui.cc start_gui.cc

10
src/backend/Makefile.am
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@ -49,18 +49,24 @@ libbackend_la_LDFLAGS = $(PYTHON_EXTRA_LDFLAGS) \
libbackend_la_SOURCES = \ libbackend_la_SOURCES = \
history.cc \ history.cc \
observed_subject.cc \ observed_subject.cc \
policy.cc \
policy_parameters.cc \
process.cc \ process.cc \
schedulable.cc \ schedulable.cc \
schedulable_list.cc \
schedulable_status.cc \ schedulable_status.cc \
simulation_status.cc \ scheduler.cc \
slice.cc slice.cc
noinst_HEADERS = \ noinst_HEADERS = \
history.hh \ history.hh \
observed_subject.hh \ observed_subject.hh \
policy.hh \
policy_parameters.hh \
process.hh \ process.hh \
schedulable.hh \ schedulable.hh \
schedulable_list.hh \
schedulable_status.hh \ schedulable_status.hh \
simulation_status.hh \ scheduler.hh \
slice.hh slice.hh

91
src/backend/history.cc
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@ -26,56 +26,66 @@ using namespace memory;
//History::instance; //static object //History::instance; //static object
History History::_instance(10); //dummy parameter History History::_instance(10); //dummy parameter
/**
The constructor sets _total_time_elapsed to -1: this permits to insert the INITIAL STATUS
of the simulation which must begin at instant -1 and live for 1 instant.
*/
History::History(int) //private constructor. The parameter is discarded History::History(int) //private constructor. The parameter is discarded
:_total_time_elapsed(0) :_total_time_elapsed(-1)
{} {}
History& History&
History::getInstance() History::get_instance()
{ {
return _instance; return _instance;
} }
/* /**
Returns a pointer to a copy of the SchedulableStatus object relative to this instant. Returns a pointer to a copy of the SchedulableStatus object relative to this instant.
It can be NULL if time is out of range or if the SimulationStatus object relative to It can be NULL if time is out of range or if there are no running entities in the associated
this instant has no running entities. SchedulableList
*/ */
smart_ptr<const SchedulableStatus> smart_ptr<const SchedulableStatus>
History::get_scheduled_at(int time) History::get_scheduled_at(int time) const
{ {
if (time >= _total_time_elapsed || time < 0) //out of range if (time >= _total_time_elapsed || time < 0) //out of range
return smart_ptr<const SchedulableStatus>(NULL); return smart_ptr<const SchedulableStatus>(NULL);
return get_simulation_status_at(time)->get_running(); //look for a runing entity
smart_ptr<const SchedulableList> p = get_simulation_status_at(time);
for (int i = 0; i < p->size(); i++)
if (p->get_item_at(i)->get_state() == SchedulableStatus::state_running)
return smart_ptr<const SchedulableStatus>(new SchedulableStatus(*(p->get_item_at(i))));
return smart_ptr<const SchedulableStatus>(NULL);
} }
/** /**
Returns a pointer to a copy of the SimulationStatus object relative to this instant or NULL Returns a pointer to a copy of the SimulationStatus object relative to this instant or NULL
if time is out of range. if time is out of range.
*/ */
smart_ptr<const SimulationStatus> smart_ptr<const SchedulableList>
History::get_simulation_status_at(int time) History::get_simulation_status_at(int time) const
{ {
if (time >= _total_time_elapsed || time < 0) //out of range if (time > _total_time_elapsed || time < 0) //out of range
return smart_ptr<const SimulationStatus>(NULL); return smart_ptr<const SchedulableList>(NULL);
int trascorso = 0; int trascorso = -1;
for(vector<Slice>::iterator i=_slices.begin(); i < _slices.end(); i++) for(vector<Slice>::const_iterator i=_slices.begin(); i < _slices.end(); i++)
if (time < trascorso + i->get_duration()) //FOUND!! if (time <= trascorso + i->get_duration()) //FOUND!!
return smart_ptr<const SimulationStatus>(new SimulationStatus(i->get_simulation_status())); return smart_ptr<const SchedulableList>(new SchedulableList(*i->get_simulation_status()));
else //Go on... else //Go on...
trascorso += i->get_duration(); trascorso += i->get_duration();
//never reached //never reached if all slices are CONTIGUOUS (ans THIS shoul be!!)!!!
return smart_ptr<const SimulationStatus>(NULL); return smart_ptr<const SchedulableList>(NULL);
} }
int int
History::get_current_time() History::get_current_time() const
{ {
return _total_time_elapsed; return _total_time_elapsed;
} }
@ -85,10 +95,11 @@ History::get_current_time()
Calls the method notify() in quality of ObservedSubject, updating all observers. Calls the method notify() in quality of ObservedSubject, updating all observers.
*/ */
void void
History::enqueue_slice(SimulationStatus status) History::enqueue_slice(const SchedulableList& status)
{ {
if(_slices.size() == 0){ if(_slices.size() == 0)
_slices.push_back(Slice(0, 1, status)); {
_slices.push_back(Slice(-1, 1, status));
_total_time_elapsed = 1; _total_time_elapsed = 1;
notify(); notify();
return; return;
@ -96,10 +107,10 @@ History::enqueue_slice(SimulationStatus status)
//check the last slice //check the last slice
Slice& last = _slices[_slices.size()-1]; Slice& last = _slices[_slices.size()-1];
if (last.get_simulation_status() == status) //increments the duration by ONE unit if (last.get_simulation_status()->has_same_objects(status)) //increments the duration by ONE unit
{ {
last.set_duration(last.get_duration()+1); last.set_duration(last.get_duration()+1);
} }
else //insert a new slice CONTIGUOUS to the last one else //insert a new slice CONTIGUOUS to the last one
{ {
_slices.push_back(Slice(last.get_started_at() + last.get_duration(), 1, status)); _slices.push_back(Slice(last.get_started_at() + last.get_duration(), 1, status));
@ -109,18 +120,26 @@ History::enqueue_slice(SimulationStatus status)
} }
/** /**
Removes all the informations about the simulation following the specified instant. Removes all the informations about the simulation following the specified instant.
Ex. truncate_at(0); removes all scheduled slices
Ex. truncate_at(-1); removes all scheduled slices and the initial status
*/ */
void void
History::truncate_at(int instant) History::truncate_at(int instant)
{ {
//reach the instant vector<Slice>::iterator i = _slices.begin();
vector<Slice>::iterator i = _slices.begin(); //reach the instant
for (int k=0; k < instant; k++) while (i != _slices.end())
i++; if (i->get_started_at() < instant)
//replaces the current vector with the "trimmed" one. i++;
_slices = vector<Slice>(_slices.begin(),i); else
_total_time_elapsed = instant; {
//replaces the current vector with the "trimmed" one.
_slices = vector<Slice>(_slices.begin(),i);
_total_time_elapsed = instant;
return;
}
} }

17
src/backend/history.hh
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@ -28,7 +28,7 @@
#include "slice.hh" #include "slice.hh"
#include "observed_subject.hh" #include "observed_subject.hh"
#include "simulation_status.hh" #include "schedulable_list.hh"
#include "schedulable_status.hh" #include "schedulable_status.hh"
#include "../templates/smartp.hh" #include "../templates/smartp.hh"
@ -47,16 +47,17 @@ namespace sgpem
*/ */
class History; class History;
class SG_DLLEXPORT History : public ObservedSubject { class SG_DLLEXPORT History : public ObservedSubject
{
public: public:
memory::smart_ptr<const sgpem::SchedulableStatus> get_scheduled_at(int time); memory::smart_ptr<const sgpem::SchedulableStatus> get_scheduled_at(int time) const;
memory::smart_ptr<const sgpem::SimulationStatus> get_simulation_status_at(int time); memory::smart_ptr<const sgpem::SchedulableList> get_simulation_status_at(int time) const;
int get_current_time(); int get_current_time() const;
void enqueue_slice(sgpem::SimulationStatus status); void enqueue_slice(const sgpem::SchedulableList& status);
void truncate_at(int instant); void truncate_at(int instant);
static History& getInstance(); static History& get_instance();
private: private:
History(int); //private constructor. The parameter is discarded History(int); //private constructor. The parameter is discarded

25
src/backend/policy.cc Normal file
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@ -0,0 +1,25 @@
// src/backend/policy.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.hh"
using namespace std;
using namespace sgpem;
using namespace memory;

51
src/backend/policy.hh Normal file
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@ -0,0 +1,51 @@
// src/backend/policy.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 POLICY_HH
#define POLICY_HH 1
#include "config.h"
#include "scheduler.hh"
namespace sgpem
{
class Policy;
/** \brief
e' una Strategy che rappresenta un algoritmo di scheduling che implementa una politica
di scheduling.
*/
class SG_DLLEXPORT Policy
{
public:
void sort_queue(sgpem::Scheduler::event) {}
bool is_pre_emptive() {return true;}
int get_time_slice() {return 2;}
private:
};
}//~ namespace sgpem
#endif

25
src/backend/policy_parameters.cc Normal file
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@ -0,0 +1,25 @@
// src/backend/policy_parameters.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_parameters.hh"
using namespace std;
using namespace sgpem;

62
src/backend/policy_parameters.hh Normal file
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@ -0,0 +1,62 @@
// src/backend/policy_parameters.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 POLICY_PARAMETERS_HH
#define POLICY_PARAMETERS_HH 1
#include "config.h"
namespace sgpem
{
class PolicyParameters;
/** \brief
*/
class SG_DLLEXPORT PolicyParameters
{
public:
template<typename T>
class Parameter;
private:
};
template<typename T>
class PolicyParameters::Parameter
{
public:
private:
};
}//~ namespace sgpem
#endif

8
src/backend/schedulable.hh
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@ -42,11 +42,11 @@ namespace sgpem
Schedulable(const Glib::ustring& name, const unsigned int& arrival, const unsigned int& total, const int& priority); Schedulable(const Glib::ustring& name, const unsigned int& arrival, const unsigned int& total, const int& priority);
virtual ~Schedulable() = 0; virtual ~Schedulable() = 0;
virtual unsigned int get_arrival_time() const; virtual unsigned int get_arrival_time() const;
unsigned int get_total_cpu_time() const; unsigned int get_total_cpu_time() const;
int get_priority() const; int get_priority() const;
Glib::ustring get_name() const; Glib::ustring get_name() const;
virtual Glib::ustring get_type() const = 0; virtual Glib::ustring get_type() const = 0;
private: private:
Glib::ustring _name; Glib::ustring _name;

200
src/backend/schedulable_list.cc Normal file
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@ -0,0 +1,200 @@
// src/frontend/schedulable_list.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 "schedulable_list.hh"
using namespace sgpem;
using namespace std;
using namespace memory;
SchedulableList::SchedulableList()
{
}
/**
Returns a pointer to the first element. If the queue is empty the NULL pointer will
be returned.
DON'T call delete on the returned pointer! Its destruction is managed by the queue.
*/
SchedulableStatus*
SchedulableList::top()
{
if (_list.size() == 0)
return NULL;
return &_list.front();
}
/**
Returns a pointer to the last element. If the queue is empty the NULL pointer will
be returned.
DON'T call delete on the returned pointer! Its destruction is managed by the queue.
*/
SchedulableStatus*
SchedulableList::bottom()
{
if (_list.size() == 0)
return NULL;
return &_list.back();
}
/**
Returns a pointer to the element at position "where". If the queue is empty or "where" is
out of rangethe NULL pointer will be returned.
DON'T call delete on the returned pointer! Its destruction is managed by the queue.
*/
SchedulableStatus*
SchedulableList::get_item_at(const uint& where)
{
if (_list.size() == 0 || where >= _list.size())
return NULL;
list<SchedulableStatus>::iterator i = _list.begin();
for (uint f=0; f < where; f++)
i++;
return &(*i);
}
const SchedulableStatus*
SchedulableList::get_item_at(const uint& where) const
{
if (_list.size() == 0 || where >= _list.size())
return NULL;
list<SchedulableStatus>::const_iterator i = _list.begin();
for (uint f=0; f < where; f++)
i++;
return &(*i);
}
/**
Returns the number of elements inserted into the queue.
*/
uint
SchedulableList::size() const
{
return _list.size();
}
void
SchedulableList::add_at_bottom(const SchedulableStatus& ss)
{
_list.push_back(ss);
}
void
SchedulableList::add_at_top(const SchedulableStatus& ss)
{
_list.push_front(ss);
}
/**
Removes an element from the list. Returns a smart pointer a copy of it or to NULL if
"position" is out of range.
Ex. remove(0); removes the top of the list
Ex. remove(size()-1) removes the bottom of the list
*/
smart_ptr<SchedulableStatus>
SchedulableList::remove(const uint& position)
{
if (_list.size() == 0 || position >= _list.size())
return smart_ptr<SchedulableStatus>(NULL);
//creates a copy of the first element
smart_ptr<SchedulableStatus> sm = new SchedulableStatus(*top());
//pops the first element
_list.pop_front();
//returns the copy
return sm;
}
/**
Switches two elements in the queue. Returns FALSE if one of the indexes is out of range.
*/
bool
SchedulableList::insert_at(const uint& which, const uint& where)
{
//out of range
if (which >= _list.size() || where >= _list.size())
return false;
//nothing to do
if (where == which)
return true;
list<SchedulableStatus>::iterator i_where = _list.begin();
list<SchedulableStatus>::iterator i_which = _list.begin();
for (uint f=0; f < where; f++)
i_where++;
for (uint f=0; f < which; f++)
i_which++;
//save the one to replace
SchedulableStatus temp = *i_where;
//replace them
*i_where = *i_which;
*i_which = temp;
return true;
}
/**
Removes all elements
*/
void
SchedulableList::clear()
{
_list.clear();
}
/**
\brief Returns TRUE if the two objects have the same SchedulableStatus objects in the same order.
*/
bool
SchedulableList::operator==(const SchedulableList& dx) const
{
return _list == dx._list;
}
/**
\brief Returns TRUE if the two objects have the same SchedulableStatus objects with NO ORDER IMPORTANCE.
*/
bool
SchedulableList::has_same_objects(const SchedulableList& dx) const
{
if (_list.size() != dx._list.size())
return false;
//check if dx has ALL and ONLY the elements holded by _list with no order importance
for(list<SchedulableStatus>::const_iterator f=_list.begin(); f != _list.end(); f++)
if (find(dx._list.begin(), dx._list.end(), *f) == dx._list.end()) //element NOT found!!
return false;
return true;
}

65
src/backend/schedulable_list.hh Normal file
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@ -0,0 +1,65 @@
// src/backend/schedulable_list.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 SCHEDULABLE_LIST_HH
#define SCHEDULABLE_LIST_HH 1
#include "config.h"
#include <list>
#include "schedulable_status.hh"
#include "../templates/smartp.hh"
namespace sgpem
{
class SchedulableList;
class SG_DLLEXPORT SchedulableList
{
public:
SchedulableList();
bool operator==(const SchedulableList&) const;
bool has_same_objects(const SchedulableList& dx) const;
sgpem::SchedulableStatus* top();
sgpem::SchedulableStatus* bottom();
void add_at_bottom(const sgpem::SchedulableStatus&);
void add_at_top(const sgpem::SchedulableStatus&);
memory::smart_ptr<sgpem::SchedulableStatus> remove(const uint& position);
bool insert_at(const uint&, const uint&);
uint size() const;
SchedulableStatus* get_item_at(const uint&);
const SchedulableStatus* get_item_at(const uint&) const;
void clear();
private:
std::list<sgpem::SchedulableStatus> _list;
};
}//~ namespace sgpem
#endif //SCHEDULABLE_LIST_HH

2
src/backend/schedulable_status.cc
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@ -1,4 +1,4 @@
// src/backend/schedulableStatus.cc - Copyright 2005, 2006, University // src/backend/schedulable_status.cc - Copyright 2005, 2006, University
// of Padova, dept. of Pure and Applied // of Padova, dept. of Pure and Applied
// Mathematics // Mathematics
// //

151
src/backend/scheduler.cc Normal file
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@ -0,0 +1,151 @@
// src/backend/scheduler.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.hh"
#include "scheduler.hh"
using namespace std;
using namespace sgpem;
using namespace memory;
//static object
Scheduler Scheduler::_instance(10); //dummy parameter
/**
*/
Scheduler::Scheduler(int) //private constructor. The parameter is discarded
{}
Scheduler&
Scheduler::get_instance()
{
return _instance;
}
SchedulableList*
Scheduler::get_ready_queue()
{
return &_ready_queue;
}
/** \note E' fondamentale che questo metodo memorizzi localmente qualora la politica
attuale sia a prerilascio o meno, e la durata del quanto di tempo, in quanto la politica
e' libera di variare questi parametri a piacere durante l'esecuzione della simulazione
*/
void
Scheduler::reset_status()
{
_ready_queue.clear();
History::get_instance().truncate_at(0);
// restore the policy
}
void
Scheduler::step_forward()
{
History& h = History::get_instance();
//******************
//check for arrivals and prepare the queue
//******************
smart_ptr<const SchedulableList> initial = h.get_simulation_status_at(h.get_current_time());
_ready_queue.clear();
//adds running schedulable
smart_ptr<const SchedulableStatus> running_ptr = h.get_scheduled_at(h.get_current_time());
if (running_ptr)
_ready_queue.add_at_top(*running_ptr);
//adds each new ready schedulable and sorts the queue
for(uint i=0; i < initial->size(); i++)
if (initial->get_item_at(i)->get_state() == SchedulableStatus::state_ready
&& initial->get_item_at(i)->get_schedulable()->get_arrival_time() == h.get_current_time())
{
_ready_queue.add_at_bottom(*initial->get_item_at(i));
//pops the running schedulable only if the policy is not preemptive
if (_policy->is_pre_emptive() == false && running_ptr)
_ready_queue.remove(0);
// Sort the queue
_policy->sort_queue(event_schedulable_arrival);
//restore the old running schedulable
if (_policy->is_pre_emptive() == false && running_ptr)
_ready_queue.add_at_top(*running_ptr);
}
//****************
// Check for termination
//****************
if (running_ptr && running_ptr->get_cpu_time_left() == 0)
{
//there was a running schedulable and it's terminated. Remove it!
for(uint i=0; i < _ready_queue.size(); i++)
if (*_ready_queue.get_item_at(i) == *running_ptr)
{
_ready_queue.remove(i);
break;
}
//IF _ready_queue.size() == 0 sort_queue(...) is called but has no effect!!
_policy->sort_queue(event_schedulable_termination);
}
//*****************
// Check for time slice
//*****************
if (_policy->get_time_slice() != numeric_limits<int>::max()) //time-slice
_policy->sort_queue(event_end_time_slice);
//******************
// Create the final list of schedulable
//******************
SchedulableList final = _ready_queue;
if (final.size() != 0)
//the firs element IS the running one (if != *running_ptr then there is a CONTEXT SWICH)
final.get_item_at(0)->set_state(SchedulableStatus::state_running);
//all the others are ready
for (uint i = 1; i < final.size(); i++)
if (final.get_item_at(i)->get_state() == SchedulableStatus::state_running)
final.get_item_at(i)->set_state(SchedulableStatus::state_ready);
//append blocked, future, terminated and the old running schedulables
for (uint i = 0; i < initial->size(); i++)
if(initial->get_item_at(i)->get_state() == SchedulableStatus::state_blocked
|| initial->get_item_at(i)->get_state() == SchedulableStatus::state_future
|| initial->get_item_at(i)->get_state() == SchedulableStatus::state_terminated
|| (initial->get_item_at(i)->get_state() == SchedulableStatus::state_ready
&& initial->get_item_at(i)->get_schedulable()->get_arrival_time() != h.get_current_time()) )
final.add_at_bottom(*initial->get_item_at(i));
h.enqueue_slice(final);
}

73
src/backend/scheduler.hh Normal file
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@ -0,0 +1,73 @@
// src/backend/scheduler.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 SCHEDULER_HH
#define SCHEDULER_HH 1
namespace sgpem
{
class Policy;
}
#include "config.h"
#include <limits>
#include "observed_subject.hh"
#include "history.hh"
#include "schedulable_list.hh"
namespace sgpem
{
class Scheduler;
/** \brief
*/
class SG_DLLEXPORT Scheduler : public ObservedSubject
{
public:
enum event
{
event_schedulable_arrival,
event_schedulable_termination,
event_end_time_slice
};
static Scheduler& get_instance();
SchedulableList* get_ready_queue();
void reset_status();
void step_forward();
private:
Scheduler(int); //private constructor. The parameter is discarded
static Scheduler _instance;
SchedulableList _ready_queue;
Policy* _policy;
};
}//~ namespace sgpem
#endif //SCHEDULER_HH

95
src/backend/simulation_status.cc
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@ -1,95 +0,0 @@
// src/backend/simulationStatus.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 "simulation_status.hh"
using namespace sgpem;
using namespace std;
using namespace memory;
/** \brief Creates the SimulationStatus object with no SchedulableStatus object
*/
SimulationStatus::SimulationStatus()
{
}
SimulationStatus::SimulationStatus(const SimulationStatus& dx)
:_set(dx._set)
{
}
/** \brief Adds a SchedulableStatus which represents a running Schedulable object.
Adds a SchedulableStatus which represents a running Schedulable object.
Note that a copy of SchedulableStatus will be created
*/
void
SimulationStatus::set_running(SchedulableStatus entity)
{
if (entity.get_state() != SchedulableStatus::state_running)
entity.set_state(SchedulableStatus::state_running);
_set.push_back(entity);
}
/** \brief Looks for a running Schedulable object and returns ist state.
Looks for a running Schedulable object and returns its state. There can be only
one running schedulable object. If no running schedulable object is found will be returned
the NULL pointer.
*/
smart_ptr<SchedulableStatus>
SimulationStatus::get_running()
{
for (list<SchedulableStatus>::iterator f=_set.begin(); f != _set.end(); f++)
if (f->get_state() == SchedulableStatus::state_running){ //there can be only ONE running schedulable objext
return smart_ptr<SchedulableStatus>(new SchedulableStatus(*f));
}
return smart_ptr<SchedulableStatus>(NULL);
}
smart_ptr<const SchedulableStatus>
SimulationStatus::get_running() const
{
for (list<SchedulableStatus>::const_iterator f=_set.begin(); f != _set.end(); f++)
if (f->get_state() == SchedulableStatus::state_running){ //there can be only ONE running schedulable objext
return smart_ptr<const SchedulableStatus>(new SchedulableStatus(*f));
}
return smart_ptr<const SchedulableStatus>(NULL); //NOT FOUND RUNNING ENTITIES
}
/**
\brief Returns TRUE if the two objects have the same SchedulableStatus objects
*/
bool
SimulationStatus::operator==(const SimulationStatus& dx) const
{
if (_set.size() != dx._set.size())
return false;
//check if dx has ALL and ONLY the elements holded by _set with no order importance
for(list<SchedulableStatus>::const_iterator f=_set.begin(); f != _set.end(); f++)
if (find(dx._set.begin(), dx._set.end(), *f) == dx._set.end()) //element NOT found!!
return false;
return true;
}

61
src/backend/simulation_status.hh
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@ -1,61 +0,0 @@
// src/backend/simulationStatus.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 SIMULATIONSTATUS_HH
#define SIMULATIONSTATUS_HH 1
#include "config.h"
#include <list>
#include "schedulable_status.hh"
#include "../templates/smartp.hh"
namespace sgpem
{
class SimulationStatus;
/** \brief Keeps informatios about the configuration of the simulation
Keeps informatios about the configuration of the simulation: which process is
running and other infos (since M02+)
*/
class SG_DLLEXPORT SimulationStatus
{
public:
SimulationStatus();
SimulationStatus(const SimulationStatus&);
bool operator==(const SimulationStatus&) const;
//this method isn't const because it returns a pointer which CAN alter the object!
memory::smart_ptr<SchedulableStatus> get_running();
memory::smart_ptr<const SchedulableStatus> get_running() const;
void set_running(SchedulableStatus);
private:
//I used a list instead of a vector because this one could reallocate the internal elements
//making pointers returned by getRunning() point to nothing! SEGMENTATION-FAULT :-O
std::list<SchedulableStatus> _set;
};
}
#endif

8
src/backend/slice.cc
View File

@ -23,15 +23,15 @@ using namespace sgpem;
using namespace std; using namespace std;
Slice::Slice(const int& start, const int& duration, const SimulationStatus& status) Slice::Slice(const int& start, const int& duration, const SchedulableList& status)
: _ref(status), _started_at(start), _duration(duration) : _ref(status), _started_at(start), _duration(duration)
{ {
} }
SimulationStatus& const SchedulableList*
Slice::get_simulation_status() Slice::get_simulation_status() const
{ {
return _ref; return &_ref;
} }
int int

8
src/backend/slice.hh
View File

@ -23,7 +23,7 @@
#include "config.h" #include "config.h"
#include "simulation_status.hh" #include "schedulable_list.hh"
namespace sgpem namespace sgpem
{ {
@ -39,15 +39,15 @@ namespace sgpem
class SG_DLLEXPORT Slice class SG_DLLEXPORT Slice
{ {
public: public:
Slice(const int& start, const int& duration, const SimulationStatus& status); Slice(const int& start, const int& duration, const SchedulableList& status);
SimulationStatus& get_simulation_status(); const SchedulableList* get_simulation_status() const;
int get_started_at() const; int get_started_at() const;
int get_duration() const; int get_duration() const;
void set_duration(const int&); void set_duration(const int&);
private: private:
SimulationStatus _ref; SchedulableList _ref;
int _started_at; int _started_at;
int _duration; int _duration;
}; };

68
src/main.cc
View File

@ -27,10 +27,10 @@
#include "templates/smartp.hh" #include "templates/smartp.hh"
#include "backend/history.hh" #include "backend/history.hh"
#include "backend/slice.hh"
#include "backend/schedulable.hh" #include "backend/schedulable.hh"
#include "backend/schedulable_list.hh"
#include "backend/schedulable_status.hh" #include "backend/schedulable_status.hh"
#include "backend/simulation_status.hh" #include "backend/slice.hh"
#include "backend/process.hh" #include "backend/process.hh"
#include <iostream> #include <iostream>
@ -68,32 +68,45 @@ main(int argc, char* argv[])
Process p1("P1", 0,10,1); Process p1("P1", 0,10,1);
Process p2("P2", 0,30,2); Process p2("P2", 0,30,2);
Process p3("P3", 5,15,3); Process p3("P3", 5,15,3);
Process p4("P4", 6,5,3);
Process p5("P5", 1,10,3);
Process p6("P6", 10,2,1);
SchedulableStatus ss1(p1); SchedulableStatus ss1(p1); ss1.set_state(SchedulableStatus::state_running);
SchedulableStatus ss2(p2); SchedulableStatus ss2(p2);
SchedulableStatus ss3(p3); SchedulableStatus ss3(p3);
SchedulableStatus ss4(p4); ss4.set_state(SchedulableStatus::state_running);
SchedulableStatus ss5(p5);
SchedulableStatus ss6(p6);
SimulationStatus sim1; sim1.set_running(p1); // SimulationStatus sim1; sim1.set_running(p1);
SimulationStatus sim2; sim2.set_running(p2);
SimulationStatus sim3; sim3.set_running(p3);
History h(History::getInstance()); //************** TEST HISTORY
h.enqueue_slice(sim1); SchedulableList l1;
h.enqueue_slice(sim1); l1.add_at_top(ss1); l1.add_at_top(ss2); l1.add_at_top(ss3);
h.enqueue_slice(sim2);
h.enqueue_slice(sim1);
h.enqueue_slice(sim2);
h.enqueue_slice(sim1);
h.enqueue_slice(sim2);
h.enqueue_slice(sim3);
h.enqueue_slice(sim3);
h.enqueue_slice(sim1);
h.enqueue_slice(sim3);
h.enqueue_slice(sim1);
h.truncate_at(3); SchedulableList l2;
l2.add_at_top(ss4); l2.add_at_top(ss5); l2.add_at_top(ss6);
History h(History::get_instance());
h.enqueue_slice(l1); //stato iniziale
h.enqueue_slice(l2);
smart_ptr<const sgpem::SchedulableList> quale;
quale = h.get_simulation_status_at(0); //stato iniziale
cout << quale->get_item_at(0)->get_schedulable()->get_name();
smart_ptr<const sgpem::SchedulableStatus> quale2 = h.get_scheduled_at(1);
cout << quale2->get_schedulable()->get_name();
h.truncate_at(0);
quale = h.get_simulation_status_at(0); //stato iniziale
cout << bool(quale) << " " << quale->get_item_at(0)->get_schedulable()->get_name();
/*
smart_ptr<const sgpem::SimulationStatus> quale; smart_ptr<const sgpem::SimulationStatus> quale;
quale = h.get_simulation_status_at(0); quale = h.get_simulation_status_at(0);
@ -112,8 +125,23 @@ main(int argc, char* argv[])
if (quale2) cout << "\n" << quale2->get_schedulable()->get_name(); else cout << "NO"; if (quale2) cout << "\n" << quale2->get_schedulable()->get_name(); else cout << "NO";
quale2 = h.get_scheduled_at(2); quale2 = h.get_scheduled_at(2);
if (quale2) cout << "\n" << quale2->get_schedulable()->get_name(); else cout << "NO"; if (quale2) cout << "\n" << quale2->get_schedulable()->get_name(); else cout << "NO";
*/
//************** TEST QUEUE
cout << "\n\nTEST QUEUE\n";
/* SchedulableQueue sq;
sq.add_at_top(ss1);
sq.add_at_top(ss2);
sq.add_at_bottom(ss3);
cout << sq.get_item_at(0)->get_schedulable()->get_name() << "\n";
cout << sq.get_item_at(1)->get_schedulable()->get_name() << "\n";
cout << sq.get_item_at(2)->get_schedulable()->get_name() << "\n";
sq.insert_at(0,2);
cout << sq.get_item_at(0)->get_schedulable()->get_name() << "\n";
cout << sq.get_item_at(1)->get_schedulable()->get_name() << "\n";
cout << sq.get_item_at(2)->get_schedulable()->get_name() << "\n";
*/
cout << "\n\n"; cout << "\n\n";
return 0; return 0;
} }

31
src/observer.cc Normal file
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@ -0,0 +1,31 @@
// src/frontend/observer.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 "observer.hh"
using namespace sgpem;
Observer::Observer()
{
}
Observer::~Observer()
{
}

5
src/observer.hh
View File

@ -37,9 +37,10 @@ namespace sgpem
class SG_DLLEXPORT Observer class SG_DLLEXPORT Observer
{ {
public: public:
virtual ~Observer() = 0; Observer();
virtual ~Observer() = 0;
virtual void update(); virtual void update() =0;
private: private:
}; };