gem5  v21.1.0.2
Classes | Public Types | Public Member Functions | List of all members
gem5::GlobalEvent Class Referenceabstract

The main global event class. More...

#include <global_event.hh>

Inheritance diagram for gem5::GlobalEvent:
gem5::BaseGlobalEventTemplate< GlobalEvent > gem5::BaseGlobalEvent gem5::EventBase gem5::DebugBreakEvent gem5::GlobalSimLoopExitEvent gem5::statistics::StatEvent

Classes

class  BarrierEvent
 

Public Types

typedef BaseGlobalEventTemplate< GlobalEventBase
 
- Public Types inherited from gem5::EventBase
typedef int8_t Priority
 

Public Member Functions

 GlobalEvent (Priority p, Flags f)
 
 GlobalEvent (Tick when, Priority p, Flags f)
 
virtual void process ()=0
 
- Public Member Functions inherited from gem5::BaseGlobalEvent
 BaseGlobalEvent (Priority p, Flags f)
 
virtual ~BaseGlobalEvent ()
 
virtual const char * description () const =0
 
void schedule (Tick when)
 
bool scheduled () const
 
Tick when () const
 
void deschedule ()
 
void reschedule (Tick when)
 

Additional Inherited Members

- Static Public Attributes inherited from gem5::EventBase
static const Priority Minimum_Pri = SCHAR_MIN
 Event priorities, to provide tie-breakers for events scheduled at the same cycle. More...
 
static const Priority Debug_Enable_Pri = -101
 If we enable tracing on a particular cycle, do that as the very first thing so we don't miss any of the events on that cycle (even if we enter the debugger). More...
 
static const Priority Debug_Break_Pri = -100
 Breakpoints should happen before anything else (except enabling trace output), so we don't miss any action when debugging. More...
 
static const Priority CPU_Switch_Pri = -31
 CPU switches schedule the new CPU's tick event for the same cycle (after unscheduling the old CPU's tick event). More...
 
static const Priority Delayed_Writeback_Pri = -1
 For some reason "delayed" inter-cluster writebacks are scheduled before regular writebacks (which have default priority). More...
 
static const Priority Default_Pri = 0
 Default is zero for historical reasons. More...
 
static const Priority DVFS_Update_Pri = 31
 DVFS update event leads to stats dump therefore given a lower priority to ensure all relevant states have been updated. More...
 
static const Priority Serialize_Pri = 32
 Serailization needs to occur before tick events also, so that a serialize/unserialize is identical to an on-line CPU switch. More...
 
static const Priority CPU_Tick_Pri = 50
 CPU ticks must come after other associated CPU events (such as writebacks). More...
 
static const Priority CPU_Exit_Pri = 64
 If we want to exit a thread in a CPU, it comes after CPU_Tick_Pri. More...
 
static const Priority Stat_Event_Pri = 90
 Statistics events (dump, reset, etc.) come after everything else, but before exit. More...
 
static const Priority Progress_Event_Pri = 95
 Progress events come at the end. More...
 
static const Priority Sim_Exit_Pri = 100
 If we want to exit on this cycle, it's the very last thing we do. More...
 
static const Priority Maximum_Pri = SCHAR_MAX
 Maximum priority. More...
 
- Protected Types inherited from gem5::EventBase
typedef unsigned short FlagsType
 
typedef ::gem5::Flags< FlagsTypeFlags
 
- Protected Member Functions inherited from gem5::BaseGlobalEventTemplate< GlobalEvent >
 BaseGlobalEventTemplate (Priority p, Flags f)
 
- Protected Attributes inherited from gem5::BaseGlobalEvent
Barrier barrier
 The barrier that all threads wait on before performing the global event. More...
 
std::vector< BarrierEvent * > barrierEvent
 The individual local event instances (one per thread/event queue). More...
 
- Static Protected Attributes inherited from gem5::EventBase
static const FlagsType PublicRead = 0x003f
 
static const FlagsType PublicWrite = 0x001d
 
static const FlagsType Squashed = 0x0001
 
static const FlagsType Scheduled = 0x0002
 
static const FlagsType Managed = 0x0004
 
static const FlagsType AutoDelete = Managed
 
static const FlagsType Reserved0 = 0x0008
 This used to be AutoSerialize. More...
 
static const FlagsType IsExitEvent = 0x0010
 
static const FlagsType IsMainQueue = 0x0020
 
static const FlagsType Initialized = 0x7a40
 
static const FlagsType InitMask = 0xffc0
 

Detailed Description

The main global event class.

Ordinary global events should derive from this class, and define process() to specify the action to be taken when the event is reached. All threads will synchronize at a barrier, exactly one of the threads will execute the process() method, then the threads will synchronize again so that none of them continue until process() is complete.

Definition at line 176 of file global_event.hh.

Member Typedef Documentation

◆ Base

Definition at line 179 of file global_event.hh.

Constructor & Destructor Documentation

◆ GlobalEvent() [1/2]

gem5::GlobalEvent::GlobalEvent ( Priority  p,
Flags  f 
)
inline

Definition at line 190 of file global_event.hh.

◆ GlobalEvent() [2/2]

gem5::GlobalEvent::GlobalEvent ( Tick  when,
Priority  p,
Flags  f 
)
inline

Member Function Documentation

◆ process()

virtual void gem5::GlobalEvent::process ( )
pure virtual

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

Generated on Tue Sep 21 2021 12:27:38 for gem5 by doxygen 1.8.17