qsemaphore.cpp File Reference

(763ab0e6236de80a0b589fc574c75a414d86d374)

#include "qsemaphore.h"
#include "qfutex_p.h"
#include "qdeadlinetimer.h"
#include "qdatetime.h"
#include "qdebug.h"
#include "qlocking_p.h"
#include "qwaitcondition_p.h"
#include <chrono>

Include dependency graph for qsemaphore.cpp:

Go to the source code of this file.

Classes
struct	QtSemaphorePrivate::Layout1
struct	QtSemaphorePrivate::Layout2
class	QSemaphorePrivate

Namespaces
namespace	QtSemaphorePrivate

Typedefs
using	QtSemaphorePrivate::Members = std::conditional_t<sizeof(Layout1) <= sizeof(Layout2), Layout1, Layout2>

Functions
static int	futexAvailCounter (quintptr v)
static bool	futexNeedsWake (quintptr v)
static QBasicAtomicInteger< quint32 > *	futexLow32 (QBasicAtomicInteger< quintptr > *ptr)
static QBasicAtomicInteger< quint32 > *	futexHigh32 (QBasicAtomicInteger< quintptr > *ptr)
template<bool IsTimed>
bool	futexSemaphoreTryAcquire_loop (QBasicAtomicInteger< quintptr > &u, quintptr curValue, quintptr nn, QDeadlineTimer timer)
template<typename T>
bool	futexSemaphoreTryAcquire (QBasicAtomicInteger< quintptr > &u, int n, T timeout)

Variables
static constexpr bool	futexHasWaiterCount = false
static constexpr quintptr	futexNeedsWakeAllBit
static constexpr QDeadlineTimer::ForeverConstant	Expired

Function Documentation

futexAvailCounter()

static int futexAvailCounter ( quintptr v )

static

Definition at line 106 of file qsemaphore.cpp.

References futexHasWaiterCount.

futexHigh32()

static QBasicAtomicInteger< quint32 > * futexHigh32 ( QBasicAtomicInteger< quintptr > * ptr )

static

Definition at line 138 of file qsemaphore.cpp.

References futexHasWaiterCount.

futexLow32()

static QBasicAtomicInteger< quint32 > * futexLow32 ( QBasicAtomicInteger< quintptr > * ptr )

static

Definition at line 129 of file qsemaphore.cpp.

futexNeedsWake()

static bool futexNeedsWake ( quintptr v )

static

Definition at line 119 of file qsemaphore.cpp.

References futexHasWaiterCount.

futexSemaphoreTryAcquire()

template<typename T>

bool futexSemaphoreTryAcquire	(	QBasicAtomicInteger< quintptr > &	u,
		int	n,
		T	timeout )

Definition at line 196 of file qsemaphore.cpp.

References futexHasWaiterCount.

futexSemaphoreTryAcquire_loop()

template<bool IsTimed>

bool futexSemaphoreTryAcquire_loop	(	QBasicAtomicInteger< quintptr > &	u,
		quintptr	curValue,
		quintptr	nn,
		QDeadlineTimer	timer )

Definition at line 149 of file qsemaphore.cpp.

References futexHasWaiterCount.

Variable Documentation

Expired

static constexpr QDeadlineTimer::ForeverConstant Expired

staticconstexpr

Initial value:

=
        QDeadlineTimer::ForeverConstant(1)

Definition at line 192 of file qsemaphore.cpp.

futexHasWaiterCount

static constexpr bool futexHasWaiterCount = false

staticconstexpr

Definition at line 100 of file qsemaphore.cpp.

Referenced by futexAvailCounter(), futexHigh32(), futexNeedsWake(), futexSemaphoreTryAcquire(), and futexSemaphoreTryAcquire_loop().

futexNeedsWakeAllBit

static constexpr quintptr futexNeedsWakeAllBit

staticconstexpr

Initial value:

= futexHasWaiterCount ?
        (Q_UINT64_C(1) << (sizeof(quintptr) * CHAR_BIT - 1)) : 0x80000000U

Definition at line 103 of file qsemaphore.cpp.