gem5::EventBase Class Reference

Common base class for Event and GlobalEvent, so they can share flag and priority definitions and accessor functions. More...

#include <eventq.hh>

Inheritance diagram for gem5::EventBase:

Public Types
typedef int8_t	Priority

Static Public Attributes
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
typedef unsigned short	FlagsType
typedef ::gem5::Flags< FlagsType >	Flags

Static Protected Attributes
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

Common base class for Event and GlobalEvent, so they can share flag and priority definitions and accessor functions.

This class should not be used directly.

Definition at line 99 of file eventq.hh.

Member Typedef Documentation

Flags

typedef ::gem5::Flags<FlagsType> gem5::EventBase::Flags

protected

Definition at line 103 of file eventq.hh.

FlagsType

typedef unsigned short gem5::EventBase::FlagsType

protected

Definition at line 102 of file eventq.hh.

Member Data Documentation

AutoDelete

const FlagsType gem5::EventBase::AutoDelete = Managed

staticprotected

Definition at line 110 of file eventq.hh.

Referenced by gem5::AMDGPUSystemHub::AtomicResponseEvent::AtomicResponseEvent(), gem5::AMDGPUInterruptHandler::DmaEvent::DmaEvent(), gem5::EventFunctionWrapper::EventFunctionWrapper(), gem5::MemberEventWrapper< F >::MemberEventWrapper(), gem5::ComputeUnit::ScalarDataPort::MemReqEvent::MemReqEvent(), gem5::ComputeUnit::SQCPort::MemReqEvent::MemReqEvent(), gem5::RegisterFileCache::RegisterCacheEvent::RegisterCacheEvent(), gem5::RegisterFile::RegisterEvent::RegisterEvent(), gem5::AMDGPUSystemHub::ResponseEvent::ResponseEvent(), gem5::ComputeUnit::DataPort::SystemHubEvent::SystemHubEvent(), gem5::ComputeUnit::ScalarDataPort::SystemHubEvent::SystemHubEvent(), gem5::FetchUnit::SystemHubEvent::SystemHubEvent(), and gem5::BaseGlobalEvent::BarrierEvent::~BarrierEvent().

Initialized

const FlagsType gem5::EventBase::Initialized = 0x7a40

staticprotected

Definition at line 119 of file eventq.hh.

Referenced by gem5::Event::initialized(), and gem5::Event::unserialize().

InitMask

const FlagsType gem5::EventBase::InitMask = 0xffc0

staticprotected

Definition at line 120 of file eventq.hh.

Referenced by gem5::Event::initialized().

IsExitEvent

const FlagsType gem5::EventBase::IsExitEvent = 0x0010

staticprotected

Definition at line 117 of file eventq.hh.

Referenced by gem5::Event::isExitEvent().

IsMainQueue

const FlagsType gem5::EventBase::IsMainQueue = 0x0020

staticprotected

Definition at line 118 of file eventq.hh.

Referenced by gem5::EventQueue::serviceOne().

Managed

const FlagsType gem5::EventBase::Managed = 0x0004

staticprotected

Definition at line 109 of file eventq.hh.

Referenced by gem5::Event::acquire(), gem5::Event::isManaged(), gem5::Event::release(), and gem5::EventQueue::serviceOne().

PublicRead

const FlagsType gem5::EventBase::PublicRead = 0x003f

staticprotected

Definition at line 105 of file eventq.hh.

Referenced by gem5::Event::getFlags(), and gem5::Event::isFlagSet().

PublicWrite

const FlagsType gem5::EventBase::PublicWrite = 0x001d

staticprotected

Definition at line 106 of file eventq.hh.

Referenced by gem5::Event::clearFlags(), gem5::Event::clearFlags(), gem5::Event::Event(), and gem5::Event::setFlags().

Reserved0

const FlagsType gem5::EventBase::Reserved0 = 0x0008

staticprotected

This used to be AutoSerialize.

This value can't be reused without changing the checkpoint version since the flag field gets serialized.

Definition at line 116 of file eventq.hh.

Scheduled

const FlagsType gem5::EventBase::Scheduled = 0x0002

staticprotected

Definition at line 108 of file eventq.hh.

Referenced by gem5::EventQueue::checkpointReschedule(), gem5::EventQueue::deschedule(), gem5::EventQueue::reschedule(), gem5::EventQueue::schedule(), gem5::Event::scheduled(), gem5::EventQueue::serviceOne(), and gem5::Event::unserialize().

Squashed

const FlagsType gem5::EventBase::Squashed = 0x0001

staticprotected

Definition at line 107 of file eventq.hh.

Referenced by gem5::EventQueue::deschedule(), gem5::EventQueue::reschedule(), gem5::EventQueue::serviceOne(), gem5::Event::squash(), gem5::Event::squashed(), and gem5::Event::unserialize().

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

• sim/eventq.hh