- "Commenting The Source(tm)" 02-2006 - The best summer camp of the world - First part

git-svn-id: svn://svn.gna.org/svn/sgpemv2/trunk@405 3ecf2c5c-341e-0410-92b4-d18e462d057c
This commit is contained in:
johnny 2006-02-23 17:59:02 +00:00
parent cf01cd6611
commit 1d326590ee
2 changed files with 76 additions and 46 deletions

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@ -19,14 +19,22 @@
// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
#include "schedulable_status.hh"
using namespace sgpem;
using namespace std;
SchedulableStatus::SchedulableStatus(const Schedulable& obj)
: _ref(&obj), _last(-1), _time_left(obj.get_total_cpu_time()), _my_state(state_future)
SchedulableStatus::SchedulableStatus(const Schedulable& obj) :
_ref(&obj), _last(-1), _time_left(obj.get_total_cpu_time()),
_my_state(state_future)
{
}
bool
SchedulableStatus::operator==(const SchedulableStatus& dx) const
{
return (_ref==dx._ref)&&(_last==dx._last)&&(_time_left==dx._time_left)&&(_my_state==dx._my_state);
}
int
SchedulableStatus::get_cpu_time_left() const
{
@ -70,12 +78,3 @@ SchedulableStatus::get_schedulable() const
{
return _ref;
}
bool
SchedulableStatus::operator==(const SchedulableStatus& dx) const
{
return (_ref==dx._ref)&&(_last==dx._last)&&(_time_left==dx._time_left)&&(_my_state==dx._my_state);
}

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@ -26,19 +26,27 @@
namespace sgpem
{
class SchedulableStatus;
/** \brief Desribes the state of a schedulable entity in a particular moment of the simulation
This class desribes the state of a schedulable entity in a particular moment of the simulation.
Stores part of informations deeded by Scheduler to manage processes and other ones.
Objects SchedulableStatus are created by Scheduler and destroyed by SimulationStatus if they are linked to it
or by Scheduler.
/** \brief Desribes the state of a schedulable entity in a particular moment
* of the simulation
*
* This class stores part of the information deeded by the Scheduler to
* manage processes and other ones.
*
* Objects of type SchedulableStatus are created by the Scheduler and are
* destroyed by SimulationStatus if they are linked to it or by the Scheduler.
*/
class SG_DLLEXPORT SchedulableStatus
{
public:
/** \brief This flag describes the actual state of the schedulable
*
* You can think of this flag as the particular stack in the OS where the
* process are placed during their lifetime. In the OS there are three
* main stacks that are Running processes, Read processes, and Blocked
* processes. These are emulated in a single list by this flag.
*/
enum state
{
state_running = 1<<0,
@ -48,17 +56,44 @@ namespace sgpem
state_terminated = 1<<4
};
/** \brief Object constructor */
SchedulableStatus(const Schedulable& obj);
//SchedulableStatus(const SchedulableStatus& obj); //copy constructor
/** \brief Verify if two instances represents the same situation
*
* This trivial overloading of the equal operator simply verifies if the
* actual represented process is the same, and if the status is also the
* same.
*/
bool operator==(const SchedulableStatus&) const;
/** \brief Returns the remaining CPU time */
int get_cpu_time_left() const;
/** \brief Decrements cpu time left by this amount until it reaches zero */
void give_cpu_time(const int& time);
/** \brief Sets the time when this process was last scheduled */
void set_last_scheduled(const int& time);
/** \brief Gets the time when this process was last scheduled */
int get_last_scheduled() const;
/** \brief Returns the schedule stack in which this process resides
* \see state */
state get_state() const;
/** \brief Sets the state of this process
* \see state */
void set_state(state s);
/** \brief Returns a pointer to the schedulable object
*
* This function returns a pointer to the actual schedable object
* represented, along with its status, by this instance.
*/
const Schedulable* get_schedulable() const;
private:
@ -66,11 +101,7 @@ namespace sgpem
int _last;
int _time_left;
state _my_state;
};
}
#endif