rollback to 3428, before the mysterious removal of libs/* at 3431/3432

git-svn-id: svn://localhost/ardour2/branches/3.0@3435 d708f5d6-7413-0410-9779-e7cbd77b26cf

1 files changed, 72 insertions, 0 deletions

diff --git a/libs/pbd/stacktrace.cc b/libs/pbd/stacktrace.cc
new file mode 100644
index 0000000000..dc9a5e18ab
--- /dev/null
+++ b/libs/pbd/stacktrace.cc
@@ -0,0 +1,72 @@
+/*
+    Copyright (C) 2000-2007 Paul Davis 
+
+    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., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
+#include <pbd/stacktrace.h>
+#include <iostream>
+
+void
+PBD::trace_twb ()
+{
+}
+
+/* Obtain a backtrace and print it to stdout. */
+
+#ifdef HAVE_EXECINFO
+
+#include <execinfo.h>
+#include <stdlib.h>
+
+void
+PBD::stacktrace (std::ostream& out, int levels)
+{
+	void *array[200];
+	size_t size;
+	char **strings;
+	size_t i;
+     
+	size = backtrace (array, 200);
+	strings = backtrace_symbols (array, size);
+     
+	if (strings) {
+
+		printf ("Obtained %zd stack frames.\n", size);
+		
+		for (i = 0; i < size && (levels == 0 || i < size_t(levels)); i++) {
+			out << strings[i] << std::endl;
+		}
+		
+		free (strings);
+	}
+}
+
+#else
+
+void
+PBD::stacktrace (std::ostream& out, int levels)
+{
+	out << "stack tracing is not enabled on this platform" << std::endl;
+}
+
+void
+c_stacktrace ()
+{
+	PBD::stacktrace (std::cout);
+}
+
+#endif /* HAVE_EXECINFO */