qabstracteventdispatcher.cpp File Reference

#include "qabstracteventdispatcher.h"
#include "qabstracteventdispatcher_p.h"
#include "qthread.h"
#include <private/qthread_p.h>
#include <private/qcoreapplication_p.h>

Go to the source code of this file.

Macros
#define	q_static_assert(expr)   (void)QStaticAssertType<expr>::Value

Enumerations
enum	{   FirstBucketOffset = 0, SecondBucketOffset = sizeof(FirstBucket) / sizeof(FirstBucket[0]), ThirdBucketOffset = 0x100, FourthBucketOffset = 0x1000,   FifthBucketOffset = 0x10000, SixthBucketOffset = 0x100000 }
enum	{   FirstBucketSize = SecondBucketOffset, SecondBucketSize = ThirdBucketOffset - SecondBucketOffset, ThirdBucketSize = FourthBucketOffset - ThirdBucketOffset, FourthBucketSize = FifthBucketOffset - FourthBucketOffset,   FifthBucketSize = SixthBucketOffset - FifthBucketOffset, SixthBucketSize = MaxTimerId - SixthBucketOffset }
enum	{ NumberOfBuckets = sizeof(BucketSize) / sizeof(BucketSize[0]) }

Functions
static int *	allocateBucket (int bucket)
static int	bucketIndex (int bucket, int timerId)
static int	bucketOffset (int timerId)
static int	prepareNewValueWithSerialNumber (int oldId, int newId)
static void	timerIdsDestructorFunction ()

Variables
static const int	BucketOffset []
static const int	BucketSize []
static int	FirstBucket []
static const int	MaxTimerId = TimerIdMask
static QBasicAtomicInt	nextFreeTimerId = Q_BASIC_ATOMIC_INITIALIZER(1)
static const int	TimerIdMask = 0x00ffffff
static QBasicAtomicPointer< int >	timerIds []
static const int	TimerSerialCounter = TimerIdMask + 1
static const int	TimerSerialMask = ~TimerIdMask & ~0x80000000

Macro Definition Documentation

q_static_assert

#define q_static_assert

(

expr

)

(void)QStaticAssertType<expr>::Value

Definition at line 119 of file qabstracteventdispatcher.cpp.

Referenced by bucketOffset().

Enumeration Type Documentation

anonymous enum

anonymous enum

Enumerator
FirstBucketOffset
SecondBucketOffset
ThirdBucketOffset
FourthBucketOffset
FifthBucketOffset
SixthBucketOffset

Definition at line 62 of file qabstracteventdispatcher.cpp.

     {
    FirstBucketOffset  = 0,
    SecondBucketOffset = sizeof(FirstBucket) / sizeof(FirstBucket[0]),
    ThirdBucketOffset  = 0x100,
    FourthBucketOffset = 0x1000,
    FifthBucketOffset  = 0x10000,
    SixthBucketOffset  = 0x100000
};

anonymous enum

anonymous enum

Enumerator
FirstBucketSize
SecondBucketSize
ThirdBucketSize
FourthBucketSize
FifthBucketSize
SixthBucketSize

Definition at line 71 of file qabstracteventdispatcher.cpp.

     {
    FirstBucketSize  = SecondBucketOffset,
    SecondBucketSize = ThirdBucketOffset - SecondBucketOffset,
    ThirdBucketSize  = FourthBucketOffset - ThirdBucketOffset,
    FourthBucketSize = FifthBucketOffset - FourthBucketOffset,
    FifthBucketSize  = SixthBucketOffset - FifthBucketOffset,
    SixthBucketSize  = MaxTimerId - SixthBucketOffset
};

anonymous enum

anonymous enum

Enumerator
NumberOfBuckets

Definition at line 84 of file qabstracteventdispatcher.cpp.

{ NumberOfBuckets = sizeof(BucketSize) / sizeof(BucketSize[0]) };

Function Documentation

allocateBucket()

static int* allocateBucket ( int  bucket )

inlinestatic

Definition at line 140 of file qabstracteventdispatcher.cpp.

Referenced by QAbstractEventDispatcherPrivate::allocateTimerId().

{
    // allocate a new bucket
    const int size = BucketSize[bucket];
    const int offset = BucketOffset[bucket];
    int *b = new int[size];
    for (int i = 0; i != size; ++i)
        b[i] = offset + i + 1;
    return b;
}

bucketIndex()

static int bucketIndex ( int  bucket, int  timerId  )

inlinestatic

Definition at line 135 of file qabstracteventdispatcher.cpp.

Referenced by QAbstractEventDispatcherPrivate::allocateTimerId(), and QAbstractEventDispatcherPrivate::releaseTimerId().

{
    return timerId - BucketOffset[bucket];
}

bucketOffset()

static int bucketOffset ( int  timerId )

inlinestatic

Definition at line 121 of file qabstracteventdispatcher.cpp.

Referenced by QAbstractEventDispatcherPrivate::allocateTimerId(), and QAbstractEventDispatcherPrivate::releaseTimerId().

{
    q_static_assert(sizeof BucketSize == sizeof BucketOffset);
    q_static_assert(sizeof(timerIds) / sizeof(timerIds[0]) == NumberOfBuckets);

    for (int i = 0; i < NumberOfBuckets; ++i) {
        if (timerId < BucketSize[i])
            return i;
        timerId -= BucketSize[i];
    }
    qFatal("QAbstractEventDispatcher: INTERNAL ERROR, timer ID %d is too large", timerId);
    return -1;
}

prepareNewValueWithSerialNumber()

static int prepareNewValueWithSerialNumber ( int  oldId, int  newId  )

inlinestatic

Definition at line 110 of file qabstracteventdispatcher.cpp.

Referenced by QAbstractEventDispatcherPrivate::allocateTimerId(), and QAbstractEventDispatcherPrivate::releaseTimerId().

{
    return (newId & TimerIdMask) | ((oldId + TimerSerialCounter) & TimerSerialMask);
}

timerIdsDestructorFunction()

static void timerIdsDestructorFunction ( )

static

Definition at line 99 of file qabstracteventdispatcher.cpp.

{
    // start at one, the first bucket is pre-allocated
    for (int i = 1; i < NumberOfBuckets; ++i)
        delete [] static_cast<int *>(timerIds[i]);
}

Variable Documentation

BucketOffset

const int BucketOffset[]

static

Initial value:

= {
    FirstBucketOffset, SecondBucketOffset, ThirdBucketOffset,
    FourthBucketOffset, FifthBucketOffset, SixthBucketOffset
}

Definition at line 86 of file qabstracteventdispatcher.cpp.

Referenced by allocateBucket(), bucketIndex(), and bucketOffset().

BucketSize

const int BucketSize[]

static

Initial value:

= {
    FirstBucketSize, SecondBucketSize, ThirdBucketSize,
    FourthBucketSize, FifthBucketSize, SixthBucketSize
}

Definition at line 80 of file qabstracteventdispatcher.cpp.

Referenced by allocateBucket(), and bucketOffset().

FirstBucket

int FirstBucket[]

static

Initial value:

= {
     1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14, 15, 16,
    17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32
}

Definition at line 57 of file qabstracteventdispatcher.cpp.

MaxTimerId

const int MaxTimerId = TimerIdMask

static

Definition at line 55 of file qabstracteventdispatcher.cpp.

nextFreeTimerId

QBasicAtomicInt nextFreeTimerId = Q_BASIC_ATOMIC_INITIALIZER(1)

static

Definition at line 107 of file qabstracteventdispatcher.cpp.

Referenced by QAbstractEventDispatcherPrivate::allocateTimerId(), and QAbstractEventDispatcherPrivate::releaseTimerId().

TimerIdMask

const int TimerIdMask = 0x00ffffff

static

Definition at line 52 of file qabstracteventdispatcher.cpp.

Referenced by QAbstractEventDispatcherPrivate::allocateTimerId(), prepareNewValueWithSerialNumber(), and QAbstractEventDispatcherPrivate::releaseTimerId().

timerIds

QBasicAtomicPointer<int> timerIds[]

static

Initial value:

=
    { Q_BASIC_ATOMIC_INITIALIZER(FirstBucket),
      Q_BASIC_ATOMIC_INITIALIZER(0),
      Q_BASIC_ATOMIC_INITIALIZER(0),
      Q_BASIC_ATOMIC_INITIALIZER(0),
      Q_BASIC_ATOMIC_INITIALIZER(0),
      Q_BASIC_ATOMIC_INITIALIZER(0) }

Definition at line 91 of file qabstracteventdispatcher.cpp.

Referenced by QAbstractEventDispatcherPrivate::allocateTimerId(), bucketOffset(), and QAbstractEventDispatcherPrivate::releaseTimerId().

TimerSerialCounter

const int TimerSerialCounter = TimerIdMask + 1

static

Definition at line 54 of file qabstracteventdispatcher.cpp.

Referenced by prepareNewValueWithSerialNumber().

TimerSerialMask

const int TimerSerialMask = ~TimerIdMask & ~0x80000000

static

Definition at line 53 of file qabstracteventdispatcher.cpp.

Referenced by prepareNewValueWithSerialNumber().