gem5  v21.1.0.2
Classes | Public Types | Public Member Functions | Public Attributes | List of all members
gem5::GlobalSyncEvent Class Reference

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:
gem5::BaseGlobalEventTemplate< GlobalSyncEvent > gem5::BaseGlobalEvent gem5::EventBase gem5::DistIface::SyncEvent


class  BarrierEvent

Public Types

typedef BaseGlobalEventTemplate< GlobalSyncEventBase
- 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)
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. 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< GlobalSyncEvent >
 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

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 208 of file global_event.hh.

Member Typedef Documentation

◆ Base

Definition at line 211 of file global_event.hh.

Constructor & Destructor Documentation

◆ GlobalSyncEvent() [1/2]

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

Definition at line 222 of file global_event.hh.

◆ GlobalSyncEvent() [2/2]

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

Member Function Documentation

◆ description()

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

Implements gem5::BaseGlobalEvent.

Definition at line 166 of file

◆ process()

void gem5::GlobalSyncEvent::process ( )

Implements gem5::BaseGlobalEvent.

Definition at line 158 of file

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

Member Data Documentation

◆ repeat

Tick gem5::GlobalSyncEvent::repeat

Definition at line 236 of file global_event.hh.

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

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

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