A special global event that synchronizes all threads and forces them to process asynchronously enqueued events. More...

#include <global_event.hh>

Inheritance diagram for gem5::GlobalSyncEvent:

Classes
class	BarrierEvent

Public Types
typedef BaseGlobalEventTemplate< GlobalSyncEvent >	Base

Public Types inherited from gem5::EventBase
typedef int8_t	Priority

Public Member Functions
	GlobalSyncEvent (Priority p, Flags f)

	GlobalSyncEvent (Tick when, Tick _repeat, Priority p, Flags f)

virtual	~GlobalSyncEvent ()

void	process ()

const char *	description () const

Public Member Functions inherited from gem5::BaseGlobalEvent
	BaseGlobalEvent (Priority p, Flags f)

virtual	~BaseGlobalEvent ()

void	schedule (Tick when)

bool	scheduled () const

Tick	when () const

void	deschedule ()

void	reschedule (Tick when)

Public Attributes
Tick	repeat

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.

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).

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.

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).

static const Priority	Delayed_Writeback_Pri = -1
	For some reason "delayed" inter-cluster writebacks are scheduled before regular writebacks (which have default priority).

static const Priority	Default_Pri = 0
	Default is zero for historical reasons.

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.

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.

static const Priority	CPU_Tick_Pri = 50
	CPU ticks must come after other associated CPU events (such as writebacks).

static const Priority	CPU_Exit_Pri = 64
	If we want to exit a thread in a CPU, it comes after CPU_Tick_Pri.

static const Priority	Stat_Event_Pri = 90
	Statistics events (dump, reset, etc.) come after everything else, but before exit.

static const Priority	Progress_Event_Pri = 95
	Progress events come at the end.

static const Priority	Sim_Exit_Pri = 100
	If we want to exit on this cycle, it's the very last thing we do.

static const Priority	Maximum_Pri = SCHAR_MAX
	Maximum priority.

Protected Types inherited from gem5::EventBase
typedef unsigned short	FlagsType

typedef ::gem5::Flags< FlagsType >	Flags

Protected Member Functions inherited from gem5::BaseGlobalEventTemplate< GlobalSyncEvent >
	BaseGlobalEventTemplate (Priority p, Flags f)

virtual	~BaseGlobalEventTemplate ()

Protected Attributes inherited from gem5::BaseGlobalEvent
Barrier	barrier
	The barrier that all threads wait on before performing the global event.

std::vector< BarrierEvent * >	barrierEvent
	The individual local event instances (one per thread/event queue).

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.

static const FlagsType	IsExitEvent = 0x0010

static const FlagsType	IsMainQueue = 0x0020

static const FlagsType	Initialized = 0x7a40

static const FlagsType	InitMask = 0xffc0

Detailed Description

A special global event that synchronizes all threads and forces them to process asynchronously enqueued events.

Useful for separating quanta in a quantum-based parallel simulation.

Definition at line 210 of file global_event.hh.

Member Typedef Documentation

◆ Base

typedef BaseGlobalEventTemplate<GlobalSyncEvent> gem5::GlobalSyncEvent::Base

Definition at line 213 of file global_event.hh.

Constructor & Destructor Documentation

◆ GlobalSyncEvent() [1/2]

gem5::GlobalSyncEvent::GlobalSyncEvent	(	Priority	p,
		Flags	f )

inline

Definition at line 224 of file global_event.hh.

◆ GlobalSyncEvent() [2/2]

gem5::GlobalSyncEvent::GlobalSyncEvent	(	Tick	when,
		Tick	_repeat,
		Priority	p,
		Flags	f )

inline

Definition at line 228 of file global_event.hh.

References gem5::BaseGlobalEvent::schedule(), and gem5::BaseGlobalEvent::when().

◆ ~GlobalSyncEvent()

virtual gem5::GlobalSyncEvent::~GlobalSyncEvent ( )

inlinevirtual

Definition at line 234 of file global_event.hh.

Member Function Documentation

◆ description()

const char * gem5::GlobalSyncEvent::description ( ) const

virtual

Implements gem5::BaseGlobalEvent.

Definition at line 166 of file global_event.cc.

◆ process()

void gem5::GlobalSyncEvent::process ( )

virtual

Implements gem5::BaseGlobalEvent.

Reimplemented in gem5::DistIface::SyncEvent.

Definition at line 158 of file global_event.cc.

References gem5::curTick(), and gem5::BaseGlobalEvent::schedule().

Member Data Documentation

◆ repeat

Tick gem5::GlobalSyncEvent::repeat

Definition at line 240 of file global_event.hh.

Referenced by gem5::DistIface::RecvScheduler::pushPacket().

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

sim/global_event.hh
sim/global_event.cc

Classes

Public Types

Public Member Functions

Public Attributes

Additional Inherited Members