qatomic_sparc.h File Reference

Go to the source code of this file.

Macros
#define	Q_ATOMIC_INT_FETCH_AND_ADD_IS_NOT_NATIVE
#define	Q_ATOMIC_INT_FETCH_AND_STORE_IS_ALWAYS_NATIVE
#define	Q_ATOMIC_INT_FETCH_AND_STORE_IS_WAIT_FREE
#define	Q_ATOMIC_INT_REFERENCE_COUNTING_IS_NOT_NATIVE
#define	Q_ATOMIC_INT_TEST_AND_SET_IS_NOT_NATIVE
#define	Q_ATOMIC_POINTER_FETCH_AND_ADD_IS_NOT_NATIVE
#define	Q_ATOMIC_POINTER_FETCH_AND_STORE_IS_ALWAYS_NATIVE
#define	Q_ATOMIC_POINTER_FETCH_AND_STORE_IS_WAIT_FREE
#define	Q_ATOMIC_POINTER_TEST_AND_SET_IS_NOT_NATIVE

Functions
Q_CORE_EXPORT int	q_atomic_lock_int (volatile int *addr)
Q_CORE_EXPORT int	q_atomic_lock_ptr (volatile void *addr)
Q_CORE_EXPORT int	q_atomic_set_int (volatile int *ptr, int newval)
Q_CORE_EXPORT void *	q_atomic_set_ptr (volatile void *ptr, void *newval)
Q_CORE_EXPORT void	q_atomic_unlock (volatile void *addr, int value)

Macro Definition Documentation

Q_ATOMIC_INT_FETCH_AND_ADD_IS_NOT_NATIVE

#define Q_ATOMIC_INT_FETCH_AND_ADD_IS_NOT_NATIVE

Definition at line 314 of file qatomic_sparc.h.

Q_ATOMIC_INT_FETCH_AND_STORE_IS_ALWAYS_NATIVE

#define Q_ATOMIC_INT_FETCH_AND_STORE_IS_ALWAYS_NATIVE

Definition at line 306 of file qatomic_sparc.h.

Q_ATOMIC_INT_FETCH_AND_STORE_IS_WAIT_FREE

#define Q_ATOMIC_INT_FETCH_AND_STORE_IS_WAIT_FREE

Definition at line 307 of file qatomic_sparc.h.

Q_ATOMIC_INT_REFERENCE_COUNTING_IS_NOT_NATIVE

#define Q_ATOMIC_INT_REFERENCE_COUNTING_IS_NOT_NATIVE

Definition at line 292 of file qatomic_sparc.h.

Q_ATOMIC_INT_TEST_AND_SET_IS_NOT_NATIVE

#define Q_ATOMIC_INT_TEST_AND_SET_IS_NOT_NATIVE

Definition at line 299 of file qatomic_sparc.h.

Q_ATOMIC_POINTER_FETCH_AND_ADD_IS_NOT_NATIVE

#define Q_ATOMIC_POINTER_FETCH_AND_ADD_IS_NOT_NATIVE

Definition at line 340 of file qatomic_sparc.h.

Q_ATOMIC_POINTER_FETCH_AND_STORE_IS_ALWAYS_NATIVE

#define Q_ATOMIC_POINTER_FETCH_AND_STORE_IS_ALWAYS_NATIVE

Definition at line 330 of file qatomic_sparc.h.

Q_ATOMIC_POINTER_FETCH_AND_STORE_IS_WAIT_FREE

#define Q_ATOMIC_POINTER_FETCH_AND_STORE_IS_WAIT_FREE

Definition at line 331 of file qatomic_sparc.h.

Q_ATOMIC_POINTER_TEST_AND_SET_IS_NOT_NATIVE

#define Q_ATOMIC_POINTER_TEST_AND_SET_IS_NOT_NATIVE

Definition at line 321 of file qatomic_sparc.h.

Function Documentation

q_atomic_lock_int()

Q_CORE_EXPORT int q_atomic_lock_int

(

volatile int *

addr

)

Definition at line 52 of file qatomic_sparc.cpp.

{
    int returnValue = q_atomic_trylock_int(addr);

    if (returnValue == INT_MIN) {
        do {
            // spin until we think we can succeed
            do {
                sched_yield();
                returnValue = *addr;
            } while (returnValue == INT_MIN);
            
            // try again
            returnValue = q_atomic_trylock_int(addr);
        } while (returnValue == INT_MIN);
    }

    return returnValue;
}

q_atomic_lock_ptr()

Q_CORE_EXPORT int q_atomic_lock_ptr

(

volatile void *

addr

)

Definition at line 72 of file qatomic_sparc.cpp.

{
    int returnValue = q_atomic_trylock_ptr(addr);

    if (returnValue == -1) {
        do {
            // spin until we think we can succeed
            do {
                sched_yield();
                returnValue = *reinterpret_cast<volatile int *>(addr);
            } while (returnValue == -1);

            // try again
            returnValue = q_atomic_trylock_ptr(addr);
        } while (returnValue == -1);
    }

    return returnValue;
}

q_atomic_set_int()

Q_CORE_EXPORT int q_atomic_set_int	(	volatile int *	ptr,
		int	newval
	)

q_atomic_set_ptr()

Q_CORE_EXPORT void* q_atomic_set_ptr	(	volatile void *	ptr,
		void *	newval
	)

q_atomic_unlock()

Q_CORE_EXPORT void q_atomic_unlock	(	volatile void *	addr,
		int	value
	)