qatomic_generic_unix.cpp File Reference

#include "qplatformdefs.h"
#include <QtCore/qatomic.h>

Go to the source code of this file.

Functions
Q_CORE_EXPORT int	QBasicAtomicInt_fetchAndAddOrdered (volatile int *_q_value, int valueToAdd)
Q_CORE_EXPORT int	QBasicAtomicInt_fetchAndStoreOrdered (volatile int *_q_value, int newValue)
Q_CORE_EXPORT bool	QBasicAtomicInt_testAndSetOrdered (volatile int *_q_value, int expectedValue, int newValue)
Q_CORE_EXPORT void *	QBasicAtomicPointer_fetchAndAddOrdered (void *volatile *_q_value, qptrdiff valueToAdd)
Q_CORE_EXPORT void *	QBasicAtomicPointer_fetchAndStoreOrdered (void *volatile *_q_value, void *newValue)
Q_CORE_EXPORT bool	QBasicAtomicPointer_testAndSetOrdered (void *volatile *_q_value, void *expectedValue, void *newValue)

Variables
static pthread_mutex_t	qAtomicMutex = PTHREAD_MUTEX_INITIALIZER

Function Documentation

QBasicAtomicInt_fetchAndAddOrdered()

Q_CORE_EXPORT int QBasicAtomicInt_fetchAndAddOrdered	(	volatile int *	_q_value,
		int	valueToAdd
	)

Definition at line 76 of file qatomic_generic_unix.cpp.

{
    int returnValue;
    pthread_mutex_lock(&qAtomicMutex);
    returnValue = *_q_value;
    *_q_value += valueToAdd;
    pthread_mutex_unlock(&qAtomicMutex);
    return returnValue;
}

QBasicAtomicInt_fetchAndStoreOrdered()

Q_CORE_EXPORT int QBasicAtomicInt_fetchAndStoreOrdered	(	volatile int *	_q_value,
		int	newValue
	)

Definition at line 65 of file qatomic_generic_unix.cpp.

{
    int returnValue;
    pthread_mutex_lock(&qAtomicMutex);
    returnValue = *_q_value;
    *_q_value = newValue;
    pthread_mutex_unlock(&qAtomicMutex);
    return returnValue;
}

QBasicAtomicInt_testAndSetOrdered()

Q_CORE_EXPORT bool QBasicAtomicInt_testAndSetOrdered	(	volatile int *	_q_value,
		int	expectedValue,
		int	newValue
	)

Definition at line 52 of file qatomic_generic_unix.cpp.

{
    bool returnValue = false;
    pthread_mutex_lock(&qAtomicMutex);
    if (*_q_value == expectedValue) {
        *_q_value = newValue;
        returnValue = true;
    }
    pthread_mutex_unlock(&qAtomicMutex);
    return returnValue;
}

QBasicAtomicPointer_fetchAndAddOrdered()

Q_CORE_EXPORT void* QBasicAtomicPointer_fetchAndAddOrdered	(	void *volatile *	_q_value,
		qptrdiff	valueToAdd
	)

Definition at line 113 of file qatomic_generic_unix.cpp.

{
    void *returnValue;
    pthread_mutex_lock(&qAtomicMutex);
    returnValue = *_q_value;
    *_q_value = reinterpret_cast<char *>(returnValue) + valueToAdd;
    pthread_mutex_unlock(&qAtomicMutex);
    return returnValue;
}

QBasicAtomicPointer_fetchAndStoreOrdered()

Q_CORE_EXPORT void* QBasicAtomicPointer_fetchAndStoreOrdered	(	void *volatile *	_q_value,
		void *	newValue
	)

Definition at line 102 of file qatomic_generic_unix.cpp.

{
    void *returnValue;
    pthread_mutex_lock(&qAtomicMutex);
    returnValue = *_q_value;
    *_q_value = newValue;
    pthread_mutex_unlock(&qAtomicMutex);
    return returnValue;
}

QBasicAtomicPointer_testAndSetOrdered()

Q_CORE_EXPORT bool QBasicAtomicPointer_testAndSetOrdered	(	void *volatile *	_q_value,
		void *	expectedValue,
		void *	newValue
	)

Definition at line 87 of file qatomic_generic_unix.cpp.

{
    bool returnValue = false;
    pthread_mutex_lock(&qAtomicMutex);
    if (*_q_value == expectedValue) {
        *_q_value = newValue;
        returnValue = true;
    }
    pthread_mutex_unlock(&qAtomicMutex);
    return returnValue;
}

Variable Documentation

qAtomicMutex

pthread_mutex_t qAtomicMutex = PTHREAD_MUTEX_INITIALIZER

static

Definition at line 49 of file qatomic_generic_unix.cpp.

Referenced by QBasicAtomicInt_fetchAndAddOrdered(), QBasicAtomicInt_fetchAndStoreOrdered(), QBasicAtomicInt_testAndSetOrdered(), QBasicAtomicPointer_fetchAndAddOrdered(), QBasicAtomicPointer_fetchAndStoreOrdered(), and QBasicAtomicPointer_testAndSetOrdered().