allow to compile PBD::Signals w/o connection debugging

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

diff --git a/libs/pbd/stacktrace.cc b/libs/pbd/stacktrace.cc
index dd5e1fd3b643b8ee2a2f7d07192d6c82e3a92cfa..c74dd946f78d7896246d4dfe36f19df64440bc32 100644 (file)
--- a/libs/pbd/stacktrace.cc
+++ b/libs/pbd/stacktrace.cc
@@ -22,6 +22,7 @@
 #include "pbd/stacktrace.h"
 #include <cstdio>
 #include <iostream>
+#include <string>
 
 void
 PBD::trace_twb ()
@@ -35,37 +36,45 @@ PBD::trace_twb ()
 #include <execinfo.h>
 #include <cxxabi.h>
 
-std::string demangle (std::string const & l)
+static std::string 
+symbol_demangle (const std::string& l)
+{
+       int status;
+
+       try {
+               
+               char* realname = abi::__cxa_demangle (l.c_str(), 0, 0, &status);
+               std::string d (realname);
+               free (realname);
+               return d;
+       } catch (std::exception) {
+               
+       }
+
+       return l;
+}
+
+std::string 
+PBD::demangle (std::string const & l)
 {
        std::string::size_type const b = l.find_first_of ("(");
+
        if (b == std::string::npos) {
-               return l;
+               return symbol_demangle (l);
        }
 
        std::string::size_type const p = l.find_last_of ("+");
        if (p == std::string::npos) {
-               return l;
+               return symbol_demangle (l);
        }
 
        if ((p - b) <= 1) {
-               return l;
+               return symbol_demangle (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;
+       return symbol_demangle (fn);
 }
 
 void
@@ -77,20 +86,31 @@ PBD::stacktrace (std::ostream& out, int levels)
        size_t i;
      
        size = backtrace (array, 200);
-       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;
+       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
 
+std::string 
+PBD::demangle (std::string const & l) /* JE - !!!! 'PBD' namespace might possibly get removed (except it's still used in 'libs/canvas/item.cc') */
+{
+       return std::string();
+}
+
 void
 PBD::stacktrace (std::ostream& out, int /*levels*/)
 {