Add a new abstraction, SysConfig for platform independent system

configuration calls. Right now this just contains PreventCoreFiles so that
bugpoint can by platform independent.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16124 91177308-0d34-0410-b5e6-96231b3b80d8

lib/System/Unix/SysConfig.cpp

@@ -0,0 +1,35 @@
+//===- SysConfig.cpp - Generic UNIX System Configuration --------*- C++ -*-===//
+// 
+//                     The LLVM Compiler Infrastructure
+//
+// This file was developed by Reid Spencer and is distributed under the 
+// University of Illinois Open Source License. See LICENSE.TXT for details.
+// 
+//===----------------------------------------------------------------------===//
+//
+// This file defines some functions for managing system configuration on Unix
+// systems.
+//
+//===----------------------------------------------------------------------===//
+
+#include "Unix.h"
+#include <sys/resource.h>
+
+namespace llvm {
+using namespace sys;
+
+
+// Some LLVM programs such as bugpoint produce core files as a normal part of
+// their operation. To prevent the disk from filling up, this configuration item
+// does what's necessary to prevent their generation.
+void PreventCoreFiles() {
+  struct rlimit rlim;
+  rlim.rlim_cur = rlim.rlim_max = 0;
+  int res = setrlimit(RLIMIT_CORE, &rlim);
+  if (res != 0)
+    ThrowErrno("Can't prevent core file generation");
+}
+
+}
+
+// vim: sw=2 smartindent smarttab tw=80 autoindent expandtab