private void initializeControllerPaths() throws IOException {
String controllerPath;
Map<String, List<String>> parsedMtab = parseMtab();
// CPU
controllerPath = findControllerInMtab(CONTROLLER_CPU, parsedMtab);
if (controllerPath != null) {
File f = new File(controllerPath + "/" + this.cgroupPrefix);
if (FileUtil.canWrite(f)) {
controllerPaths.put(CONTROLLER_CPU, controllerPath);
} else {
throw new IOException(
"Not able to enforce cpu weights; cannot write " + "to cgroup at: " + controllerPath);
}
} else {
throw new IOException(
"Not able to enforce cpu weights; cannot find "
+ "cgroup for cpu controller in "
+ getMtabFileName());
}
}
