atomic_add_return.h File Reference

#include "sync_utils.h"
#include "atomic.h"

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Functions
static __inline int	_atomic_add_return (int a, atomic_ea_t v)

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Function Documentation

static __inline int _atomic_add_return	(	int	a,
		atomic_ea_t	v
	)		[static]

atomic_add_return - atomically add to a counter and return previous value. : handle to effective address of counter. : value to be added.

Atomically add a value to a counter in system memory. The only restriction is that must be word aligned.

This routine implements the "fetch and add" primitive that is described in "Book I PowerPC User Instruction Set Architecture" Returns the previous value from system memory.

References _atomic_modify().