Import LinuxCNC source tree

lib/python/lcnc_realtime.py.in

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+#    Python wrapper of realtime script
+#    Copyright 2026 Hannes Diethelm <hannes.diethelm@gmail.com>
+#
+#    This program is free software; you can redistribute it and/or modify
+#    it under the terms of the GNU General Public License as published by
+#    the Free Software Foundation; either version 2 of the License, or
+#    (at your option) any later version.
+#
+#    This program is distributed in the hope that it will be useful,
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#    GNU General Public License for more details.
+#
+#    You should have received a copy of the GNU General Public License
+#    along with this program; if not, write to the Free Software
+#    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+import subprocess
+
+REALTIME="@REALTIME@"
+
+def verify_info() -> tuple[bool, str]:
+    #Checks if system is realtime compatible
+    cmd = [REALTIME, "verify"]
+    ret = subprocess.run(cmd, stdin=subprocess.DEVNULL, capture_output=True, text=True)
+    if ret.returncode != 0 and ret.returncode != 1:
+        raise RuntimeError("cmd \"" + " ".join(cmd) + "\" failed with status " + str(ret.returncode))
+    return ret.returncode==0, ret.stdout.rstrip();
+
+def verify() -> bool:
+    ret, _ = verify_info();
+    return ret;
+
+def status() -> bool:
+    #Status: realtime core running (rtapi_app running or kernel modules active)
+    #Note: rtapi_app running does not mean realtime compatibility!
+    cmd = [REALTIME, "status"]
+    ret = subprocess.run(cmd, stdin=subprocess.DEVNULL, stdout=subprocess.DEVNULL)
+    if ret.returncode != 0 and ret.returncode != 1:
+        raise RuntimeError("cmd \"" + " ".join(cmd) + "\" failed with status " + str(ret.returncode))
+    return ret.returncode==0;