#include "base/misc.hh"
#include "base/trace.hh"
#include "base/types.hh"
+#include "debug/Event.hh"
#include "sim/serialize.hh"
class EventQueue; // forward declaration
typedef short FlagsType;
typedef ::Flags<FlagsType> Flags;
- static const FlagsType PublicRead = 0x003f;
- static const FlagsType PublicWrite = 0x001d;
- static const FlagsType Squashed = 0x0001;
- static const FlagsType Scheduled = 0x0002;
- static const FlagsType AutoDelete = 0x0004;
- static const FlagsType AutoSerialize = 0x0008;
- static const FlagsType IsExitEvent = 0x0010;
- static const FlagsType IsMainQueue = 0x0020;
-#ifdef EVENTQ_DEBUG
- static const FlagsType Initialized = 0xf000;
-#endif
+ static const FlagsType PublicRead = 0x003f; // public readable flags
+ static const FlagsType PublicWrite = 0x001d; // public writable flags
+ static const FlagsType Squashed = 0x0001; // has been squashed
+ static const FlagsType Scheduled = 0x0002; // has been scheduled
+ static const FlagsType AutoDelete = 0x0004; // delete after dispatch
+ static const FlagsType AutoSerialize = 0x0008; // must be serialized
+ static const FlagsType IsExitEvent = 0x0010; // special exit event
+ static const FlagsType IsMainQueue = 0x0020; // on main event queue
+ static const FlagsType Initialized = 0x7a40; // somewhat random bits
+ static const FlagsType InitMask = 0xffc0; // mask for init bits
+
+ bool
+ initialized() const
+ {
+ return this && (flags & InitMask) == Initialized;
+ }
+
+ public:
+ typedef int8_t Priority;
private:
// The event queue is now a linked list of linked lists. The
static Event *removeItem(Event *event, Event *last);
Tick _when; //!< timestamp when event should be processed
- short _priority; //!< event priority
+ Priority _priority; //!< event priority
Flags flags;
#ifndef NDEBUG
queue = q;
#endif
#ifdef EVENTQ_DEBUG
- whenScheduled = curTick;
+ whenScheduled = curTick();
#endif
}
Flags
getFlags(Flags _flags) const
{
- assert(flags.noneSet(~PublicRead));
+ assert(_flags.noneSet(~PublicRead));
return flags.isSet(_flags);
}
/// at the same cycle. Most events are scheduled at the default
/// priority; these values are used to control events that need to
/// be ordered within a cycle.
- enum Priority {
- /// Minimum priority
- Minimum_Pri = SHRT_MIN,
-
- /// 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).
- Trace_Enable_Pri = -101,
-
- /// Breakpoints should happen before anything else (except
- /// enabling trace output), so we don't miss any action when
- /// debugging.
- Debug_Break_Pri = -100,
-
- /// CPU switches schedule the new CPU's tick event for the
- /// same cycle (after unscheduling the old CPU's tick event).
- /// The switch needs to come before any tick events to make
- /// sure we don't tick both CPUs in the same cycle.
- CPU_Switch_Pri = -31,
-
- /// For some reason "delayed" inter-cluster writebacks are
- /// scheduled before regular writebacks (which have default
- /// priority). Steve?
- Delayed_Writeback_Pri = -1,
-
- /// Default is zero for historical reasons.
- Default_Pri = 0,
-
- /// Serailization needs to occur before tick events also, so
- /// that a serialize/unserialize is identical to an on-line
- /// CPU switch.
- Serialize_Pri = 32,
-
- /// CPU ticks must come after other associated CPU events
- /// (such as writebacks).
- CPU_Tick_Pri = 50,
-
- /// Statistics events (dump, reset, etc.) come after
- /// everything else, but before exit.
- Stat_Event_Pri = 90,
-
- /// Progress events come at the end.
- Progress_Event_Pri = 95,
-
- /// If we want to exit on this cycle, it's the very last thing
- /// we do.
- Sim_Exit_Pri = 100,
-
- /// Maximum priority
- Maximum_Pri = SHRT_MAX
- };
+
+ /// Minimum priority
+ static const Priority Minimum_Pri = SCHAR_MIN;
+
+ /// 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 Trace_Enable_Pri = -101;
+
+ /// Breakpoints should happen before anything else (except
+ /// enabling trace output), so we don't miss any action when
+ /// debugging.
+ static const Priority Debug_Break_Pri = -100;
+
+ /// CPU switches schedule the new CPU's tick event for the
+ /// same cycle (after unscheduling the old CPU's tick event).
+ /// The switch needs to come before any tick events to make
+ /// sure we don't tick both CPUs in the same cycle.
+ static const Priority CPU_Switch_Pri = -31;
+
+ /// For some reason "delayed" inter-cluster writebacks are
+ /// scheduled before regular writebacks (which have default
+ /// priority). Steve?
+ static const Priority Delayed_Writeback_Pri = -1;
+
+ /// Default is zero for historical reasons.
+ static const Priority Default_Pri = 0;
+
+ /// Serailization needs to occur before tick events also, so
+ /// that a serialize/unserialize is identical to an on-line
+ /// CPU switch.
+ static const Priority Serialize_Pri = 32;
+
+ /// CPU ticks must come after other associated CPU events
+ /// (such as writebacks).
+ static const Priority CPU_Tick_Pri = 50;
+
+ /// Statistics events (dump, reset, etc.) come after
+ /// everything else, but before exit.
+ static const Priority Stat_Event_Pri = 90;
+
+ /// Progress events come at the end.
+ static const Priority Progress_Event_Pri = 95;
+
+ /// If we want to exit on this cycle, it's the very last thing
+ /// we do.
+ static const Priority Sim_Exit_Pri = 100;
+
+ /// Maximum priority
+ static const Priority Maximum_Pri = SCHAR_MAX;
/*
* Event constructor
* @param queue that the event gets scheduled on
*/
Event(Priority p = Default_Pri)
- : nextBin(NULL), nextInBin(NULL), _priority(p)
+ : nextBin(NULL), nextInBin(NULL), _priority(p), flags(Initialized)
{
#ifndef NDEBUG
instance = ++instanceCounter;
queue = NULL;
#endif
#ifdef EVENTQ_DEBUG
- flags.set(Initialized);
- whenCreated = curTick;
+ whenCreated = curTick();
whenScheduled = 0;
#endif
}
Tick when() const { return _when; }
/// Get the event priority
- int priority() const { return _priority; }
+ Priority priority() const { return _priority; }
#ifndef SWIG
struct priority_compare
void insert(Event *event);
void remove(Event *event);
+ EventQueue(const EventQueue &);
+ const EventQueue &operator=(const EventQueue &);
+
public:
- EventQueue(const std::string &n)
- : objName(n), head(NULL)
- {}
+ EventQueue(const std::string &n);
virtual const std::string name() const { return objName; }
}
}
- // default: process all events up to 'now' (curTick)
- void serviceEvents() { serviceEvents(curTick); }
+ // default: process all events up to 'now' (curTick())
+ void serviceEvents() { serviceEvents(curTick()); }
// return true if no events are queued
bool empty() const { return head == NULL; }
void dump() const;
- Tick nextEventTime() { return empty() ? curTick : head->when(); }
+ Tick nextEventTime() { return empty() ? curTick() : head->when(); }
bool debugVerify() const;
return eventq;
}
+ operator EventQueue *() const
+ {
+ return eventq;
+ }
+
void
schedule(Event &event, Tick when)
{
inline void
EventQueue::schedule(Event *event, Tick when)
{
- assert((UTick)when >= (UTick)curTick);
+ // Typecasting Tick->Utick here since gcc
+ // complains about signed overflow
+ assert((UTick)when >= (UTick)curTick());
assert(!event->scheduled());
-#ifdef EVENTQ_DEBUG
- assert((event->flags & Event::Initialized) == Event::Initialized);
-#endif
+ assert(event->initialized());
event->setWhen(when, this);
insert(event);
EventQueue::deschedule(Event *event)
{
assert(event->scheduled());
-#ifdef EVENTQ_DEBUG
- assert((event->flags & Event::Initialized) == Event::Initialized);
-#endif
+ assert(event->initialized());
remove(event);
inline void
EventQueue::reschedule(Event *event, Tick when, bool always)
{
- assert(when >= curTick);
+ // Typecasting Tick->Utick here since gcc
+ // complains about signed overflow
+ assert((UTick)when >= (UTick)curTick());
assert(always || event->scheduled());
-#ifdef EVENTQ_DEBUG
- assert((event->flags & Event::Initialized) == Event::Initialized);
-#endif
+ assert(event->initialized());
if (event->scheduled())
remove(event);
setFlags(AutoDelete);
}
+ EventWrapper(T &obj, bool del = false, Priority p = Default_Pri)
+ : Event(p), object(&obj)
+ {
+ if (del)
+ setFlags(AutoDelete);
+ }
+
void process() { (object->*F)(); }
const std::string
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