provide a semantic defined by the C11 fences with corresponding memory_order. atomic_thread_fence_acq() gives r | r, w, where r and w are read and write accesses, and | denotes the fence itself. atomic_thread_fence_rel() is r, w | w. atomic_thread_fence_acq_rel() is the combination of the acquire and release in single operation. Note that reads after the acq+rel fence could be made visible before writes preceeding the fence. atomic_thread_fence_seq_cst() orders all accesses before/after the fence, and the fence itself is globally ordered against other sequentially consistent atomic operations. Reviewed by: alc Discussed with: bde Sponsored by: The FreeBSD Foundation MFC after: 3 weeks |
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.. | ||
_align.h | ||
_bus.h | ||
_inttypes.h | ||
_limits.h | ||
_stdint.h | ||
_types.h | ||
asi.h | ||
asm.h | ||
asmacros.h | ||
atomic.h | ||
bus_common.h | ||
bus_dma.h | ||
bus_private.h | ||
bus.h | ||
cache.h | ||
ccr.h | ||
clock.h | ||
cmt.h | ||
counter.h | ||
cpu.h | ||
cpufunc.h | ||
db_machdep.h | ||
dcr.h | ||
dump.h | ||
elf.h | ||
endian.h | ||
exec.h | ||
fireplane.h | ||
float.h | ||
floatingpoint.h | ||
fp.h | ||
frame.h | ||
fsr.h | ||
gdb_machdep.h | ||
idprom.h | ||
ieee.h | ||
ieeefp.h | ||
in_cksum.h | ||
instr.h | ||
intr_machdep.h | ||
iommureg.h | ||
iommuvar.h | ||
jbus.h | ||
kdb.h | ||
kerneldump.h | ||
ktr.h | ||
limits.h | ||
lsu.h | ||
mcntl.h | ||
md_var.h | ||
memdev.h | ||
metadata.h | ||
nexusvar.h | ||
ofw_machdep.h | ||
ofw_mem.h | ||
ofw_nexus.h | ||
param.h | ||
pcb.h | ||
pcpu.h | ||
pmap.h | ||
pmc_mdep.h | ||
proc.h | ||
profile.h | ||
pstate.h | ||
ptrace.h | ||
reg.h | ||
reloc.h | ||
resource.h | ||
runq.h | ||
sc_machdep.h | ||
setjmp.h | ||
sf_buf.h | ||
sigframe.h | ||
signal.h | ||
smp.h | ||
stack.h | ||
stdarg.h | ||
sysarch.h | ||
tick.h | ||
tlb.h | ||
trap.h | ||
tsb.h | ||
tstate.h | ||
tte.h | ||
ucontext.h | ||
upa.h | ||
utrap.h | ||
varargs.h | ||
vdso.h | ||
ver.h | ||
vm.h | ||
vmparam.h | ||
watch.h | ||
wstate.h |