moving ecasound

library/ecasound-2.7.2/kvutils/kvu_debug.cpp

@@ -0,0 +1,87 @@
+// ------------------------------------------------------------------------
+// kvu_debug.cpp: Debug helper functions
+// Copyright (C) 2009 Kai Vehmanen
+//
+// Attributes:
+//     eca-style-version: 3
+//
+// 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307  USA
+// ------------------------------------------------------------------------
+
+// References
+//  - glibc manual (section "33.1 Backtraces"
+//    http://www.gnu.org/software/libc/manual/html_node/index.html#toc_Debugging-Support
+
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <iostream>
+
+#ifdef HAVE_FEATURES_H
+#include <features.h>
+#endif
+
+using namespace std;
+
+/* backtrace is an GNU glibc extension and it was 
+ * first added to glibc 2.1 */
+#if defined(__GLIBC_PREREQ) 
+#if __GLIBC_PREREQ(2,1) && defined(HAVE_EXECINFO_H)
+
+#include <execinfo.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+void kvu_print_backtrace_stderr(void)
+{
+  const int NUM_STACK_FRAMES = 10;
+  void *array[NUM_STACK_FRAMES];
+  size_t size;
+  char **strings;
+  size_t i;
+
+  size = backtrace (array, NUM_STACK_FRAMES);
+  strings = backtrace_symbols (array, size);
+
+  cerr << 
+"-----------------------------------------------------------------------"
+       << endl
+       << "Function call backtrace ("
+       << size 
+       << " frames):" << endl;
+
+  for (i = 0; i < size; i++)
+    cerr << " " << i << ": " << strings[i] << endl;
+
+  free (strings);
+  cerr << 
+"-----------------------------------------------------------------------"
+       << endl;
+}
+
+#endif
+
+#else
+
+/* non-glibc case */
+
+void kvu_print_backtrace_stderr(void)
+{
+  cout << "ERROR (kvu_print_backtrace_stderr): backtrace printing only supported with glibc" << endl;
+}
+
+#endif