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SMR_PTR_GET(9) FreeBSD Kernel Developer's Manual SMR_PTR_GET(9) NAME SMR_PTR_GET, SMR_PTR_GET_LOCKED, SMR_PTR_SET_LOCKED - safe memory reclamation pointer API SYNOPSIS TYPE SMR_PTR_GET(TYPE *pptr); TYPE SMR_PTR_GET_LOCKED(TYPE *pptr); void SMR_PTR_SET_LOCKED(TYPE *pptr, TYPE v); DESCRIPTION The SMR_PTR macros are used for accessing SMR-protected pointers. The macro SMR_PTR_GET() reads the pointer referenced by pptr for dereferencing inside SMR read-side critical section. SMR_PTR_GET_LOCKED() reads the pointer referenced by pptr for dereferencing inside writer context. SMR_PTR_SET_LOCKED() writes value v to the pointer referenced by pptr. The operation issues a write-write memory barrier with membar_producer(9) before the pointer write. CONTEXT SMR_PTR_GET(), SMR_PTR_GET_LOCKED() and SMR_PTR_SET_LOCKED() can be called during autoconf, from process context, or from interrupt context. SMR_PTR_GET() can be used from SMR read-side critical section. SMR_PTR_GET_LOCKED() and SMR_PTR_SET_LOCKED() can be used from writer context. SEE ALSO membar_producer(9), SMR_LIST_INIT(9), smr_read_enter(9) HISTORY The SMR_PTR macros first appeared in OpenBSD 6.5. FreeBSD 14.1-RELEASE-p8 July 5, 2019 FreeBSD 14.1-RELEASE-p8