kshareddatacache.cpp File Reference

#include "kshareddatacache.h"
#include "kshareddatacache_p.h"
#include <kdebug.h>
#include <kglobal.h>
#include <kstandarddirs.h>
#include <krandom.h>
#include <QtCore/QDateTime>
#include <QtCore/QSharedPointer>
#include <QtCore/QByteArray>
#include <QtCore/QFile>
#include <QtCore/QAtomicInt>
#include <QtCore/QList>
#include <QtCore/QMutex>
#include <QtCore/QMutexLocker>
#include <sys/types.h>
#include <sys/mman.h>
#include <stdlib.h>
#include <stddef.h>

Include dependency graph for kshareddatacache.cpp:

Go to the source code of this file.

Defines
#define	ALIGNOF(x)   (__alignmentHack<x>::size)
Typedefs
typedef qint32	pageID
Functions
template<class T >
T *	alignTo (const void *start, uint size=ALIGNOF(T))
static quint32	generateHash (const QByteArray &buffer)
template<class T >
T	intCeil (T a, T b)
static unsigned int	MurmurHashAligned (const void *key, int len, unsigned int seed)
template<class T >
T *	offsetAs (void *const base, qint32 offset)
template<class T >
const T *	offsetAs (const void *const base, qint32 offset)

---

Define Documentation

#define ALIGNOF

(

x

)

(__alignmentHack<x>::size)

Definition at line 183 of file kshareddatacache.cpp.

---

Typedef Documentation

typedef qint32 pageID

Definition at line 237 of file kshareddatacache.cpp.

---

Function Documentation

template<class T >

T* alignTo	(	const void *	start,
		uint	size = ALIGNOF(T)
	)

Definition at line 191 of file kshareddatacache.cpp.

static quint32 generateHash

(

const QByteArray &

buffer

)

[static]

This is the hash function used for our data to hopefully make the hashing used to place the QByteArrays as efficient as possible.

Definition at line 155 of file kshareddatacache.cpp.

template<class T >

T intCeil	(	T	a,
		T	b
	)

Returns:

the smallest integer greater than or equal to (a / b).

Parameters:

a	Numerator, should be ≥ 0.
b	Denominator, should be > 0.

Definition at line 232 of file kshareddatacache.cpp.

static unsigned int MurmurHashAligned	(	const void *	key,
		int	len,
		unsigned int	seed
	)		[static]

Definition at line 52 of file kshareddatacache.cpp.

template<class T >

T* offsetAs	(	void *const	base,
		qint32	offset
	)

Definition at line 220 of file kshareddatacache.cpp.

template<class T >

const T* offsetAs	(	const void *const	base,
		qint32	offset
	)

Returns a pointer to a const object of type T, assumed to be offset *BYTES* greater than the base address.

Note that in order to meet alignment requirements for T, it is possible that the returned pointer points greater than offset into base.

Definition at line 212 of file kshareddatacache.cpp.