rhzrptr.h File Reference

Hazard pointers — safe reclamation for lock-free reads. More...

#include <rlib/rtypes.h>
#include <rlib/concurrency/ratomic.h>

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Data Structures
struct	rhzrptr
	Pointer slot that participates in hazard-pointer reclamation. More...

Macros
#define	R_HZR_PTR_INIT(notify)   { 0, (RDestroyNotify)notify }
	Static initialiser for an rhzrptr with destroy notifier notify.

Typedefs
typedef struct RHzrPtrRec	RHzrPtrRec
	Opaque per-thread hazard record.

Functions
rpointer	r_hzr_ptr_acquire (rhzrptr *hzrptr, RHzrPtrRec *rec)
	Publish a hazard for the current value of hzrptr and return it.
void	r_hzr_ptr_release (rhzrptr *hzrptr, RHzrPtrRec *rec)
	Drop the hazard published by a previous r_hzr_ptr_acquire.
void	r_hzr_ptr_replace (rhzrptr *hzrptr, rpointer ptr)
	Atomically replace hzrptr's value with ptr and schedule the displaced value for delayed reclamation.
RHzrPtrRec *	r_hzr_ptr_rec_new (void)
	Allocate a per-thread hazard record.
void	r_hzr_ptr_rec_free (RHzrPtrRec *rec)
	Free a per-thread hazard record at thread exit.

Detailed Description

Hazard pointers — safe reclamation for lock-free reads.