snapshot of https://github.com/nats-io/nats-server.git (main, 2026-09-15; blobs > 131072B omitted)

server/sysmem/sysctl.go

@@ -0,0 +1,33 @@
+// Copyright 2019-2025 The NATS Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+//go:build darwin || freebsd || openbsd || dragonfly || netbsd
+
+package sysmem
+
+import (
+	"syscall"
+	"unsafe"
+)
+
+func sysctlInt64(name string) int64 {
+	s, err := syscall.Sysctl(name)
+	if err != nil {
+		return 0
+	}
+	// Make sure it's 8 bytes when we do the cast below.
+	// We were getting fatal error: checkptr: converted pointer straddles multiple allocations in go 1.22.1 on darwin.
+	var b [8]byte
+	copy(b[:], s)
+	return *(*int64)(unsafe.Pointer(&b[0]))
+}