'rebrand' OSspecific Unix -> POSIX

- change name of environment variable from $WM_OS -> $WM_OSTYPE
  as a better description

src/OSspecific/POSIX/signals/sigInt.C

@@ -0,0 +1,110 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | Copyright (C) 1991-2009 OpenCFD Ltd.
+     \\/     M anipulation  |
+-------------------------------------------------------------------------------
+License
+    This file is part of OpenFOAM.
+
+    OpenFOAM 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.
+
+    OpenFOAM 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 OpenFOAM; if not, write to the Free Software Foundation,
+    Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+
+\*---------------------------------------------------------------------------*/
+
+#include "error.H"
+#include "sigInt.H"
+#include "JobInfo.H"
+#include "IOstreams.H"
+
+// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
+
+struct sigaction Foam::sigInt::oldAction_;
+
+// * * * * * * * * * * * * * Private Member Functions  * * * * * * * * * * * //
+
+void Foam::sigInt::sigIntHandler(int)
+{
+    // Reset old handling
+    if (sigaction(SIGINT, &oldAction_, NULL) < 0)
+    {
+        FatalErrorIn
+        (
+            "Foam::sigInt::sigIntHandler()"
+        )   << "Cannot reset SIGINT trapping"
+            << abort(FatalError);    
+    }
+
+    // Update jobInfo file
+    jobInfo.signalEnd();
+
+    // Throw signal (to old handler)
+    raise(SIGINT);
+}
+
+
+// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
+
+Foam::sigInt::sigInt()
+{
+    oldAction_.sa_handler = NULL;
+}
+
+
+// * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //
+
+Foam::sigInt::~sigInt()
+{
+    // Reset old handling
+    if (sigaction(SIGINT, &oldAction_, NULL) < 0)
+    {
+        FatalErrorIn
+        (
+            "Foam::sigInt::~sigInt()"
+        )   << "Cannot reset SIGINT trapping"
+            << abort(FatalError);    
+    }
+}
+
+
+// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
+
+void Foam::sigInt::set()
+{
+    if (oldAction_.sa_handler)
+    {
+        FatalErrorIn
+        (
+            "Foam::sigInt::set()"
+        )   << "Cannot call sigInt::set() more than once"
+            << abort(FatalError);
+    }
+
+    struct sigaction newAction;
+    newAction.sa_handler = sigIntHandler;
+    newAction.sa_flags = SA_NODEFER;
+    sigemptyset(&newAction.sa_mask);
+    if (sigaction(SIGINT, &newAction, &oldAction_) < 0)
+    {
+        FatalErrorIn
+        (
+            "Foam::sigInt::set()"
+        )   << "Cannot set SIGINT trapping"
+            << abort(FatalError);    
+    }
+}
+
+
+// ************************************************************************* //