scripting::TimeScheduler Class Reference

This class keeps a list of squirrel threads that are scheduled for a certain time. More...

#include <time_scheduler.hpp>

List of all members.

Public Member Functions
	TimeScheduler ()
virtual	~TimeScheduler ()
void	update (float time)
void	schedule_thread (HSQUIRRELVM vm, float time)
Static Public Attributes
static TimeScheduler *	instance
Private Types
typedef std::vector< ScheduleEntry >	ScheduleHeap
Private Attributes
ScheduleHeap	schedule
Classes
struct	ScheduleEntry

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Detailed Description

This class keeps a list of squirrel threads that are scheduled for a certain time.

(the typical result of a wait() command in a squirrel script)

Definition at line 28 of file time_scheduler.hpp.

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Member Typedef Documentation

typedef std::vector<ScheduleEntry> scripting::TimeScheduler::ScheduleHeap [private]

Definition at line 53 of file time_scheduler.hpp.

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Constructor & Destructor Documentation

scripting::TimeScheduler::TimeScheduler

(

)

Definition at line 27 of file time_scheduler.cpp.

                             :
  schedule()
{
}

scripting::TimeScheduler::~TimeScheduler

(

)

[virtual]

Definition at line 32 of file time_scheduler.cpp.

{
}

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Member Function Documentation

void scripting::TimeScheduler::update

(

float

time

)

Definition at line 37 of file time_scheduler.cpp.

References scripting::global_vm, log_warning, and schedule.

{
  while(!schedule.empty() && schedule.front().wakeup_time < time) {
    HSQOBJECT thread_ref = schedule.front().thread_ref;

    sq_pushobject(global_vm, thread_ref);
    sq_getweakrefval(global_vm, -1);

    HSQUIRRELVM scheduled_vm;
    if(sq_gettype(global_vm, -1) == OT_THREAD &&
       SQ_SUCCEEDED(sq_getthread(global_vm, -1, &scheduled_vm))) {
      if(SQ_FAILED(sq_wakeupvm(scheduled_vm, SQFalse, SQFalse, SQTrue, SQFalse))) {
        std::ostringstream msg;
        msg << "Error waking VM: ";
        sq_getlasterror(scheduled_vm);
        if(sq_gettype(scheduled_vm, -1) != OT_STRING) {
          msg << "(no info)";
        } else {
          const char* lasterr;
          sq_getstring(scheduled_vm, -1, &lasterr);
          msg << lasterr;
        }
        log_warning << msg.str() << std::endl;
        sq_pop(scheduled_vm, 1);
      }
    }

    sq_release(global_vm, &thread_ref);
    sq_pop(global_vm, 2);

    std::pop_heap(schedule.begin(), schedule.end());
    schedule.pop_back();
  }
}

void scripting::TimeScheduler::schedule_thread	(	HSQUIRRELVM	vm,
		float	time
	)

Definition at line 73 of file time_scheduler.cpp.

References scripting::global_vm, schedule, scripting::TimeScheduler::ScheduleEntry::thread_ref, scripting::vm_to_object(), and scripting::TimeScheduler::ScheduleEntry::wakeup_time.

Referenced by scripting::wait().

{
  // create a weakref to the VM
  SQObject vm_obj = vm_to_object(scheduled_vm);
  sq_pushobject(global_vm, vm_obj);
  sq_weakref(global_vm, -1);

  ScheduleEntry entry;
  if(SQ_FAILED(sq_getstackobj(global_vm, -1, & entry.thread_ref))) {
    sq_pop(global_vm, 2);
    throw SquirrelError(global_vm, "Couldn't get thread weakref from vm");
  }
  entry.wakeup_time = time;

  sq_addref(global_vm, & entry.thread_ref);
  sq_pop(global_vm, 2);

  schedule.push_back(entry);
  std::push_heap(schedule.begin(), schedule.end());
}

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Member Data Documentation

TimeScheduler * scripting::TimeScheduler::instance [static]

Definition at line 37 of file time_scheduler.hpp.

Referenced by ScreenManager::update_gamelogic(), and scripting::wait().

ScheduleHeap scripting::TimeScheduler::schedule [private]

Definition at line 54 of file time_scheduler.hpp.

Referenced by schedule_thread(), and update().

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The documentation for this class was generated from the following files:

• src/scripting/time_scheduler.hpp
• src/scripting/time_scheduler.cpp

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