Socket/Protocols/INet: Allow socket address string representation to omit the address...

[senf.git] / Utils / Exception.cc

diff --git a/Utils/Exception.cc b/Utils/Exception.cc
index e23357f..4c74f6c 100644 (file)
--- a/Utils/Exception.cc
+++ b/Utils/Exception.cc
@@ -27,6 +27,10 @@
 //#include "Exception.ih"
 
 // Custom includes
+#include <execinfo.h>
+#include <sstream>
+#include "../config.hh"
+#include "impl/demangle.h"
 
 #define prefix_
 ///////////////////////////////cc.p////////////////////////////////////////
@@ -34,6 +38,41 @@
 ///////////////////////////////////////////////////////////////////////////
 // senf::Exception
 
+#ifdef SENF_DEBUG
+prefix_ void senf::ExceptionMixin::addBacktrace()
+{
+    void * entries[SENF_DEBUG_BACKTRACE_NUMCALLERS];
+    unsigned nEntries( ::backtrace(entries, SENF_DEBUG_BACKTRACE_NUMCALLERS) );
+    char ** symbols = ::backtrace_symbols(entries, nEntries);
+    
+    std::stringstream ss;
+    ss << "\nException at\n";
+    for (unsigned i=0; i<nEntries; ++i) {
+        std::string sym (symbols[i]);
+        std::string::size_type fnStart (sym.find("("));
+        if (fnStart != std::string::npos) {
+            std::string::size_type fnEnd (sym.find(")",fnStart+1));
+            if (fnEnd != std::string::npos) {
+                std::string fn (sym,fnStart+1, fnEnd-fnStart-1);
+                char * demangled ( ::cplus_demangle(fn.c_str(), 
+                                                    DMGL_TYPES|DMGL_AUTO) );
+                if (demangled) {
+                    ss << "  " << demangled << "( ... )" << std::string(sym,fnEnd+1) << "\n";
+                    continue;
+                }
+            }
+        }
+        ss << "  " << sym << "\n";
+    }
+    ss << "-- \n" << message_;
+    message_ = ss.str();
+    free(symbols);
+}
+#endif
+
+/////////////////////////////////////////////////////////////////////////// 
+// senf::Exception
+
 prefix_ senf::Exception::~Exception()
     throw()
 {}
@@ -41,15 +80,20 @@ prefix_ senf::Exception::~Exception()
 prefix_ char const * senf::Exception::what()
     const throw()
 {
-    return message_.c_str();
+    return message().c_str();
 }
 
 ///////////////////////////////////////////////////////////////////////////
 // senf::SystemException
 
-prefix_ void senf::SystemException::init(std::string const & descr, int code)
+prefix_ void senf::SystemException::init(std::string const & descr, int code
+                                         _SENF_EXC_DEBUG_ARGS_ND)
 {
     code_ = code;
+#   ifdef SENF_DEBUG
+    if (file && line)
+        (*this) << "Exception at " << file << ":" << line << "\n";
+#   endif
     (*this) << "[" << errorString() << "]";
     if (! descr.empty()) (*this) << " " << descr;
 }