Merge commit 'origin/master' into pr6429-comp-unwindsyms

* commit 'origin/master':
  Always include libdw using link groups.
  Fix bug in handling process(PID) probes.
  Added tests for 'process(PID)' variants.
  This commit makes changes to the VFS tapset. The changes include deprecation of
  syscalls2.stp: Add sys_renameat.
  Only probe lines once for the :* wildcard line pattern.
  Revert checking address in runtime
  bz451707: fix conversions.exp test $name
  Cleanup in tapsets.cxx
  Added powerpc support to runtime/syscall.h.
  Remove validating _stext due to many aliased symbols
  PR6646: Add checking address in runtime
  Fixed offset argument to vm_callback.

1 files changed, 40 insertions, 0 deletions

diff --git a/auto_free.h b/auto_free.h
new file mode 100644
index 00000000..b13e7371
--- /dev/null
+++ b/auto_free.h
@@ -0,0 +1,40 @@
+// -*- C++ -*-
+// Copyright (C) 2008 Red Hat Inc.
+//
+// This file is part of systemtap, and is free software.  You can
+// redistribute it and/or modify it under the terms of the GNU General
+// Public License (GPL); either version 2, or (at your option) any
+// later version.
+
+#ifndef AUTO_FREE_H
+#define AUTO_FREE_H 1
+#include <cstdlib>
+
+// Very simple auto_ptr-like class for protecting storage allocated
+// with free().
+class auto_free
+{
+public:
+  auto_free(void* ptr) : _ptr(ptr) {}
+  ~auto_free()
+  {
+    if (_ptr)
+      std::free(_ptr);
+  }
+  void release()
+  {
+    _ptr = 0;
+  }
+private:
+  // No copying allowed.
+  auto_free(const auto_free& af)
+  {
+  }
+  // No assignment either
+  auto_free& operator=(const auto_free& rhs)
+  {
+    return *this;
+  }
+  void* _ptr;
+};
+#endif