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package sync
import "core:intrinsics"
Ordering :: enum {
Relaxed, // Monotonic
Release,
Acquire,
Acquire_Release,
Sequentially_Consistent,
}
strongest_failure_ordering_table := [Ordering]Ordering{
.Relaxed = .Relaxed,
.Release = .Relaxed,
.Acquire = .Acquire,
.Acquire_Release = .Acquire,
.Sequentially_Consistent = .Sequentially_Consistent,
}
strongest_failure_ordering :: #force_inline proc(order: Ordering) -> Ordering {
return strongest_failure_ordering_table[order]
}
fence :: #force_inline proc($order: Ordering) {
when order == .Relaxed { #panic("there is no such thing as a relaxed fence") }
else when order == .Release { intrinsics.atomic_fence_rel() }
else when order == .Acquire { intrinsics.atomic_fence_acq() }
else when order == .Acquire_Release { intrinsics.atomic_fence_acqrel() }
else when order == .Sequentially_Consistent { intrinsics.atomic_fence() }
else { #panic("unknown order") }
}
atomic_store :: #force_inline proc(dst: ^$T, val: T, $order: Ordering) {
when order == .Relaxed { intrinsics.atomic_store_relaxed(dst, val) }
else when order == .Release { intrinsics.atomic_store_rel(dst, val) }
else when order == .Sequentially_Consistent { intrinsics.atomic_store(dst, val) }
else when order == .Acquire { #panic("there is not such thing as an acquire store") }
else when order == .Acquire_Release { #panic("there is not such thing as an acquire/release store") }
else { #panic("unknown order") }
}
atomic_load :: #force_inline proc(dst: ^$T, $order: Ordering) -> T {
when order == .Relaxed { return intrinsics.atomic_load_relaxed(dst) }
else when order == .Acquire { return intrinsics.atomic_load_acq(dst) }
else when order == .Sequentially_Consistent { return intrinsics.atomic_load(dst) }
else when order == .Release { #panic("there is no such thing as a release load") }
else when order == .Acquire_Release { #panic("there is no such thing as an acquire/release load") }
else { #panic("unknown order") }
}
atomic_swap :: #force_inline proc(dst: ^$T, val: T, $order: Ordering) -> T {
when order == .Relaxed { return intrinsics.atomic_xchg_relaxed(dst, val) }
else when order == .Release { return intrinsics.atomic_xchg_rel(dst, val) }
else when order == .Acquire { return intrinsics.atomic_xchg_acq(dst, val) }
else when order == .Acquire_Release { return intrinsics.atomic_xchg_acqrel(dst, val) }
else when order == .Sequentially_Consistent { return intrinsics.atomic_xchg(dst, val) }
else { #panic("unknown order") }
}
atomic_compare_exchange :: #force_inline proc(dst: ^$T, old, new: T, $success, $failure: Ordering) -> (val: T, ok: bool) {
when failure == .Relaxed {
when success == .Relaxed { return intrinsics.atomic_cxchg_relaxed(dst, old, new) }
else when success == .Acquire { return intrinsics.atomic_cxchg_acq_failrelaxed(dst, old, new) }
else when success == .Acquire_Release { return intrinsics.atomic_cxchg_acqrel_failrelaxed(dst, old, new) }
else when success == .Sequentially_Consistent { return intrinsics.atomic_cxchg_failrelaxed(dst, old, new) }
else when success == .Release { return intrinsics.atomic_cxchg_rel(dst, old, new) }
else { #panic("an unknown ordering combination") }
} else when failure == .Acquire {
when success == .Release { return intrinsics.atomic_cxchg_acqrel(dst, old, new) }
else when success == .Acquire { return intrinsics.atomic_cxchg_acq(dst, old, new) }
else { #panic("an unknown ordering combination") }
} else when failure == .Sequentially_Consistent {
when success == .Sequentially_Consistent { return intrinsics.atomic_cxchg(dst, old, new) }
else { #panic("an unknown ordering combination") }
} else when failure == .Acquire_Release {
#panic("there is not such thing as an acquire/release failure ordering")
} else when failure == .Release {
when success == .Acquire { return instrinsics.atomic_cxchg_failacq(dst, old, new) }
else { #panic("an unknown ordering combination") }
} else {
return T{}, false
}
}
atomic_compare_exchange_weak :: #force_inline proc(dst: ^$T, old, new: T, $success, $failure: Ordering) -> (val: T, ok: bool) {
when failure == .Relaxed {
when success == .Relaxed { return intrinsics.atomic_cxchgweak_relaxed(dst, old, new) }
else when success == .Acquire { return intrinsics.atomic_cxchgweak_acq_failrelaxed(dst, old, new) }
else when success == .Acquire_Release { return intrinsics.atomic_cxchgweak_acqrel_failrelaxed(dst, old, new) }
else when success == .Sequentially_Consistent { return intrinsics.atomic_cxchgweak_failrelaxed(dst, old, new) }
else when success == .Release { return intrinsics.atomic_cxchgweak_rel(dst, old, new) }
else { #panic("an unknown ordering combination") }
} else when failure == .Acquire {
when success == .Release { return intrinsics.atomic_cxchgweak_acqrel(dst, old, new) }
else when success == .Acquire { return intrinsics.atomic_cxchgweak_acq(dst, old, new) }
else { #panic("an unknown ordering combination") }
} else when failure == .Sequentially_Consistent {
when success == .Sequentially_Consistent { return intrinsics.atomic_cxchgweak(dst, old, new) }
else { #panic("an unknown ordering combination") }
} else when failure == .Acquire_Release {
#panic("there is not such thing as an acquire/release failure ordering")
} else when failure == .Release {
when success == .Acquire { return intrinsics.atomic_cxchgweak_failacq(dst, old, new) }
else { #panic("an unknown ordering combination") }
} else {
return T{}, false
}
}
atomic_add :: #force_inline proc(dst: ^$T, val: T, $order: Ordering) -> T {
when order == .Relaxed { return intrinsics.atomic_add_relaxed(dst, val) }
else when order == .Release { return intrinsics.atomic_add_rel(dst, val) }
else when order == .Acquire { return intrinsics.atomic_add_acq(dst, val) }
else when order == .Acquire_Release { return intrinsics.atomic_add_acqrel(dst, val) }
else when order == .Sequentially_Consistent { return intrinsics.atomic_add(dst, val) }
else { #panic("unknown order") }
}
atomic_sub :: #force_inline proc(dst: ^$T, val: T, $order: Ordering) -> T {
when order == .Relaxed { return intrinsics.atomic_sub_relaxed(dst, val) }
else when order == .Release { return intrinsics.atomic_sub_rel(dst, val) }
else when order == .Acquire { return intrinsics.atomic_sub_acq(dst, val) }
else when order == .Acquire_Release { return intrinsics.atomic_sub_acqrel(dst, val) }
else when order == .Sequentially_Consistent { return intrinsics.atomic_sub(dst, val) }
else { #panic("unknown order") }
}
atomic_and :: #force_inline proc(dst: ^$T, val: T, $order: Ordering) -> T {
when order == .Relaxed { return intrinsics.atomic_and_relaxed(dst, val) }
else when order == .Release { return intrinsics.atomic_and_rel(dst, val) }
else when order == .Acquire { return intrinsics.atomic_and_acq(dst, val) }
else when order == .Acquire_Release { return intrinsics.atomic_and_acqrel(dst, val) }
else when order == .Sequentially_Consistent { return intrinsics.atomic_and(dst, val) }
else { #panic("unknown order") }
}
atomic_nand :: #force_inline proc(dst: ^$T, val: T, $order: Ordering) -> T {
when order == .Relaxed { return intrinsics.atomic_nand_relaxed(dst, val) }
else when order == .Release { return intrinsics.atomic_nand_rel(dst, val) }
else when order == .Acquire { return intrinsics.atomic_nand_acq(dst, val) }
else when order == .Acquire_Release { return intrinsics.atomic_nand_acqrel(dst, val) }
else when order == .Sequentially_Consistent { return intrinsics.atomic_nand(dst, val) }
else { #panic("unknown order") }
}
atomic_or :: #force_inline proc(dst: ^$T, val: T, $order: Ordering) -> T {
when order == .Relaxed { return intrinsics.atomic_or_relaxed(dst, val) }
else when order == .Release { return intrinsics.atomic_or_rel(dst, val) }
else when order == .Acquire { return intrinsics.atomic_or_acq(dst, val) }
else when order == .Acquire_Release { return intrinsics.atomic_or_acqrel(dst, val) }
else when order == .Sequentially_Consistent { return intrinsics.atomic_or(dst, val) }
else { #panic("unknown order") }
}
atomic_xor :: #force_inline proc(dst: ^$T, val: T, $order: Ordering) -> T {
when order == .Relaxed { return intrinsics.atomic_xor_relaxed(dst, val) }
else when order == .Release { return intrinsics.atomic_xor_rel(dst, val) }
else when order == .Acquire { return intrinsics.atomic_xor_acq(dst, val) }
else when order == .Acquire_Release { return intrinsics.atomic_xor_acqrel(dst, val) }
else when order == .Sequentially_Consistent { return intrinsics.atomic_xor(dst, val) }
else { #panic("unknown order") }
}
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