fix compiler warnings.

[ardour.git] / libs / pbd / stacktrace.cc

diff --git a/libs/pbd/stacktrace.cc b/libs/pbd/stacktrace.cc
index 82a78c6fe2b7476f374336c03306b7aa26513a96..805b9a2e840e211fd1dac478e364db0071c776f3 100644 (file)
--- a/libs/pbd/stacktrace.cc
+++ b/libs/pbd/stacktrace.cc
@@ -1,12 +1,72 @@
-#include <pbd/stacktrace.h>
+/*
+    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 "libpbd-config.h"
+
+#include "pbd/stacktrace.h"
+#include <cstdio>
 #include <iostream>
 
+void
+PBD::trace_twb ()
+{
+}
+
 /* Obtain a backtrace and print it to stdout. */
 
 #ifdef HAVE_EXECINFO
 
 #include <execinfo.h>
-#include <stdlib.h>
+#include <cxxabi.h>
+
+std::string demangle (std::string const & l)
+{
+       std::string::size_type const b = l.find_first_of ("(");
+       if (b == std::string::npos) {
+               return l;
+       }
+
+       std::string::size_type const p = l.find_last_of ("+");
+       if (p == std::string::npos) {
+               return l;
+       }
+
+       if ((p - b) <= 1) {
+               return l;
+       }
+       
+       std::string const fn = l.substr (b + 1, p - b - 1);
+
+       int status;
+       try {
+               
+               char* realname = abi::__cxa_demangle (fn.c_str(), 0, 0, &status);
+               std::string d (realname);
+               free (realname);
+               return d;
+               
+       } catch (std::exception) {
+               
+       }
+       
+       return l;
+}
 
 void
 PBD::stacktrace (std::ostream& out, int levels)
@@ -17,24 +77,27 @@ PBD::stacktrace (std::ostream& out, int levels)
        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 < levels); i++) {
-                       out << strings[i] << std::endl;
+       if (size) {
+               strings = backtrace_symbols (array, size);
+     
+               if (strings) {
+                       
+                       for (i = 0; i < size && (levels == 0 || i < size_t(levels)); i++) {
+                               out << "  " << demangle (strings[i]) << std::endl;
+                       }
+                       
+                       free (strings);
                }
-               
-               free (strings);
+       } else {
+               out << "no stacktrace available!" << std::endl;
        }
 }
 
 #else
 
 void
-PBD::stacktrace (std::ostream& out, int levels)
+PBD::stacktrace (std::ostream& out, int /*levels*/)
 {
        out << "stack tracing is not enabled on this platform" << std::endl;
 }
@@ -42,7 +105,7 @@ PBD::stacktrace (std::ostream& out, int levels)
 void
 c_stacktrace ()
 {
-       PBD::stacktrace (cout);
+       PBD::stacktrace (std::cout);
 }
 
 #endif /* HAVE_EXECINFO */