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-rw-r--r--src/exceptionbase.cpp75
1 files changed, 70 insertions, 5 deletions
diff --git a/src/exceptionbase.cpp b/src/exceptionbase.cpp
index 61bbcb4..6e5ae10 100644
--- a/src/exceptionbase.cpp
+++ b/src/exceptionbase.cpp
@@ -11,45 +11,70 @@
11Bu::ExceptionBase::ExceptionBase( const char *lpFormat, ... ) throw() : 11Bu::ExceptionBase::ExceptionBase( const char *lpFormat, ... ) throw() :
12 nErrorCode( 0 ), 12 nErrorCode( 0 ),
13 sWhat( NULL ) 13 sWhat( NULL )
14#ifdef LIBBU_EXCEPTION_BACKTRACE
15 , sBT( NULL )
16#endif
14{ 17{
15 va_list ap; 18 va_list ap;
16 19
17 va_start(ap, lpFormat); 20 va_start(ap, lpFormat);
18 setWhat( lpFormat, ap ); 21 setWhat( lpFormat, ap );
19 va_end(ap); 22 va_end(ap);
23#ifdef LIBBU_EXCEPTION_BACKTRACE
24 createBacktrace();
25#endif
20} 26}
21 27
22Bu::ExceptionBase::ExceptionBase( int nCode, const char *lpFormat, ... ) throw() : 28Bu::ExceptionBase::ExceptionBase( int nCode, const char *lpFormat, ... ) throw() :
23 nErrorCode( nCode ), 29 nErrorCode( nCode ),
24 sWhat( NULL ) 30 sWhat( NULL )
31#ifdef LIBBU_EXCEPTION_BACKTRACE
32 , sBT( NULL )
33#endif
25{ 34{
26 va_list ap; 35 va_list ap;
27 36
28 va_start(ap, lpFormat); 37 va_start(ap, lpFormat);
29 setWhat( lpFormat, ap ); 38 setWhat( lpFormat, ap );
30 va_end(ap); 39 va_end(ap);
40#ifdef LIBBU_EXCEPTION_BACKTRACE
41 createBacktrace();
42#endif
31} 43}
32 44
33Bu::ExceptionBase::ExceptionBase( int nCode ) throw() : 45Bu::ExceptionBase::ExceptionBase( int nCode ) throw() :
34 nErrorCode( nCode ), 46 nErrorCode( nCode ),
35 sWhat( NULL ) 47 sWhat( NULL )
48#ifdef LIBBU_EXCEPTION_BACKTRACE
49 , sBT( NULL )
50#endif
36{ 51{
52#ifdef LIBBU_EXCEPTION_BACKTRACE
53 createBacktrace();
54#endif
37} 55}
38 56
39Bu::ExceptionBase::ExceptionBase( const ExceptionBase &e ) throw () : 57Bu::ExceptionBase::ExceptionBase( const ExceptionBase &e ) throw () :
40 nErrorCode( e.nErrorCode ), 58 nErrorCode( e.nErrorCode ),
41 sWhat( NULL ) 59 sWhat( NULL )
60#ifdef LIBBU_EXCEPTION_BACKTRACE
61 , sBT( NULL )
62#endif
42{ 63{
43 setWhat( e.sWhat ); 64 setWhat( e.sWhat );
65#ifdef LIBBU_EXCEPTION_BACKTRACE
66 createBacktrace();
67#endif
44} 68}
45 69
46Bu::ExceptionBase::~ExceptionBase() throw() 70Bu::ExceptionBase::~ExceptionBase() throw()
47{ 71{
48 if( sWhat ) 72 delete[] sWhat;
49 { 73 sWhat = NULL;
50 delete[] sWhat; 74#ifdef LIBBU_EXCEPTION_BACKTRACE
51 sWhat = NULL; 75 delete[] sBT;
52 } 76 sBT = NULL;
77#endif
53} 78}
54 79
55void Bu::ExceptionBase::setWhat( const char *lpFormat, va_list &vargs ) 80void Bu::ExceptionBase::setWhat( const char *lpFormat, va_list &vargs )
@@ -82,3 +107,43 @@ int Bu::ExceptionBase::getErrorCode()
82 return nErrorCode; 107 return nErrorCode;
83} 108}
84 109
110#ifdef LIBBU_EXCEPTION_BACKTRACE
111const char *Bu::ExceptionBase::getBacktrace() const throw()
112{
113 return sBT;
114}
115
116#include "bu/fstring.h"
117#include <execinfo.h>
118
119void Bu::ExceptionBase::createBacktrace()
120{
121 void *array[1000];
122 size_t size;
123 char **strings;
124 size_t i;
125
126 size = backtrace (array, 1000);
127 strings = backtrace_symbols (array, size);
128
129 Bu::FString s;
130 s.format("Obtained %zd stack frames.\n", size );
131
132 for (i = 0; i < size; i++)
133 {
134 s += strings[i];
135 s += "\n";
136 }
137
138 free (strings);
139
140 sBT = new char[s.getSize()+1];
141 strcpy( sBT, s.getStr() );
142}
143
144#else
145const char *Bu::ExceptionBase::getBacktrace() const throw()
146{
147 return "Backtrace support is not compiled in.\n";
148}
149#endif