Add pushover notifications, this should be a super basic MVP

vendor/github.com/dgraph-io/ristretto/z/rtutil.go

@@ -0,0 +1,75 @@
+// MIT License
+
+// Copyright (c) 2019 Ewan Chou
+
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+
+package z
+
+import (
+	"unsafe"
+)
+
+// NanoTime returns the current time in nanoseconds from a monotonic clock.
+//go:linkname NanoTime runtime.nanotime
+func NanoTime() int64
+
+// CPUTicks is a faster alternative to NanoTime to measure time duration.
+//go:linkname CPUTicks runtime.cputicks
+func CPUTicks() int64
+
+type stringStruct struct {
+	str unsafe.Pointer
+	len int
+}
+
+//go:noescape
+//go:linkname memhash runtime.memhash
+func memhash(p unsafe.Pointer, h, s uintptr) uintptr
+
+// MemHash is the hash function used by go map, it utilizes available hardware instructions(behaves
+// as aeshash if aes instruction is available).
+// NOTE: The hash seed changes for every process. So, this cannot be used as a persistent hash.
+func MemHash(data []byte) uint64 {
+	ss := (*stringStruct)(unsafe.Pointer(&data))
+	return uint64(memhash(ss.str, 0, uintptr(ss.len)))
+}
+
+// MemHashString is the hash function used by go map, it utilizes available hardware instructions
+// (behaves as aeshash if aes instruction is available).
+// NOTE: The hash seed changes for every process. So, this cannot be used as a persistent hash.
+func MemHashString(str string) uint64 {
+	ss := (*stringStruct)(unsafe.Pointer(&str))
+	return uint64(memhash(ss.str, 0, uintptr(ss.len)))
+}
+
+// FastRand is a fast thread local random function.
+//go:linkname FastRand runtime.fastrand
+func FastRand() uint32
+
+//go:linkname memclrNoHeapPointers runtime.memclrNoHeapPointers
+func memclrNoHeapPointers(p unsafe.Pointer, n uintptr)
+
+func Memclr(b []byte) {
+	if len(b) == 0 {
+		return
+	}
+	p := unsafe.Pointer(&b[0])
+	memclrNoHeapPointers(p, uintptr(len(b)))
+}