src/utils/Exception.hpp

/*******************************************************************\

              Copyright (C) 2003 Joseph Coffland

    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.

            For information regarding this software email
                   jcofflan@users.sourceforge.net

\*******************************************************************/


#ifndef UTILS_EXCEPTION_H
#define UTILS_EXCEPTION_H

#include "config.h"
#include "utils/FileLocation.hpp"
#include "utils/SmartPointer.hpp"
#include "utils/Zap.hpp"

#ifdef HAVE_DEBUGGER
#include "debug/Debugger.hpp"
#endif
#ifdef HAVE_BACKTRACE
#include "debug/Backtrace.hpp"
#endif

#include <vector>
#include <string>
#include <iostream>

#ifdef HAVE_NO_SSTREAM
#include "utils/sstream_local.hpp"
#else
#include <sstream>
#endif

#if defined(HAVE_DEBUGGER) || defined(HAVE_BACKTRACE)
#define HAVE_STACK_TRACE
#endif


namespace OpenMD {
  // Forward Declarations
  template <class T, class DEALLOC_T>
  class SmartPointer;

  /**
   * Exception is a general purpose exception class.  It is similar to
   * the java Exception class.  A Exception can carry a message,
   * a FileLocation and/or a pointer to an exception which was the
   * original cause.
   *
   * There are preprocessor macros that can be used to as a convient way
   * to add the current file, line and column where the exception occured.
   * These are:
   *
   * THROW(const string message)
   * 
   * and
   * 
   * ASSERT_OR_THROW(const string message, const bool condition)
   *
   * The latter can be used to in place of assert(const bool condition).  
   * Throwing an exception instead of aborting overcomes some of the 
   * limitations of the standard assert.
   */
  class Exception {
#ifdef HAVE_STACK_TRACE
  public:
    typedef std::vector<std::string> trace_t;
#endif

  private:
    std::string message;
    FileLocation location;
    SmartPointer<Exception> cause;
#ifdef HAVE_STACK_TRACE
    SmartPointer<trace_t> trace;
#endif

  public:
    static unsigned int causePrintLevel;
#ifdef HAVE_STACK_TRACE
    static bool enableStackTraces;
#endif

    Exception() {init();}

    Exception(const std::string message) : message(message) {
      init();
    }

    Exception(const std::string message, const FileLocation &location) 
      : message(message), location(location) {
      init();
    }
  
    Exception(const std::string message, Exception &cause) :
      message(message) {
      this->cause = new Exception(cause);
      init();
    }

    Exception(const std::string message, const FileLocation &location, 
              const Exception &cause) :
      message(message), location(location) {
      this->cause = new Exception(cause);
      init();
    }

#ifdef HAVE_STACK_TRACE
    Exception(const Exception &e, const Exception &cause) :
      message(e.message), location(e.location), cause(new Exception(cause)),
      trace(e.trace) {}

    /// Copy constructor
    Exception(const Exception &e) :
      message(e.message), location(e.location), cause(e.cause),
      trace(e.trace) {}
#else
    Exception(const Exception &e, const Exception &cause) :
      message(e.message), location(e.location), cause(new Exception(cause)) {}

    /// Copy constructor
    Exception(const Exception &e) :
      message(e.message), location(e.location), cause(e.cause) {}
#endif

    virtual ~Exception() {}

    const std::string &getMessage() const {return message;}
    const FileLocation &getLocation() const {return location;}

    /**
     * @return A SmartPointer to the Exception that caused this 
     *         exception or NULL.
     */  
    SmartPointer<Exception> getCause() const {return cause;}

#ifdef HAVE_STACK_TRACE
    SmartPointer<trace_t> getTrace() const {return trace;}
#endif

    /** 
     * Prints the complete exception recuring down to the cause exception if
     * not null.  WARNING: If there are many layers of causes this function
     * could print a very large amount of data.  This can be limited by
     * setting the causePrintLevel variable.
     * 
     * @param stream The output stream.
     * @param printLocations Print file locations.
     * @param printLevel The current cause print level.
     * 
     * @return A reference to the passed stream.
     */  
    std::ostream &print(std::ostream &stream,
                        bool printLocations = true,
                        unsigned int printLevel = 0) const {

      stream << message << std::endl;

      if (printLocations && !location.isEmpty())
        stream << "@ " << location << std::endl;

#ifdef HAVE_STACK_TRACE
      if (enableStackTraces && !trace.isNull()) {
        trace_t::iterator it;
        for (it = trace->begin(); it != trace->end(); it++)
          stream << std::endl << "  " << *it;
      }
#endif

      if (!cause.isNull()) {
        stream << std::endl << " ";

        if (printLevel > causePrintLevel) {
          stream << "Aborting exception dump due to causePrintLevel limit! "
                 << "Increase Exception::causePrintLevel to see more.";

        } else {
          stream << "caused by: ";
          cause->print(stream, printLocations, printLevel);
        }
      }

      return stream;
    }

  protected:
    void init() {
#ifdef HAVE_STACK_TRACE
      if (enableStackTraces) {
        trace = new trace_t();

        // When Optimization is turned on functions such as this
        // one are often inlined and not visable to the debugger.
        // This means stack traces for optimized code will often
        // be incomplete. 
#ifdef __OPTIMIZE__
        trace->push_back("Warning: Optimization can cause incomplete traces.");
#endif

#if defined(HAVE_DEBUGGER) && defined(HAVE_BACKTRACE)
        if (!Debugger::getStackTrace(*trace)) {
          trace->clear();
          Backtrace::getStackTrace(*trace);
        }

#else
#if defined(HAVE_DEBUGGER)
        Debugger::getStackTrace(*trace);
#else
        Backtrace::getStackTrace(*trace);
#endif
#endif
      }
#endif // HAVE_STACK_TRACE
    }

    friend std::ostream &operator<<(std::ostream &, const Exception &);
  };

  /** 
   * An stream output operator for Exception.  This allows you to print the
   * text of an exception to a stream like so:
   *
   * . . .
   * } catch (Exception &e) {
   *   cout << e << endl;
   *   return 0;
   * }
   */
  inline std::ostream &operator<<(std::ostream &stream, const Exception &e) {
    e.print(stream);
    return stream;
  }
}

#ifndef THROW
#define THROW(msg) throw OpenMD::Exception((msg), FILE_LOCATION)
#define THROWC(msg, cause) \
  throw OpenMD::Exception((msg), FILE_LOCATION, (cause))
#define ASSERT_OR_THROW(msg, condition) {if (!(condition)) THROW(msg);}

#define THROWS(msgs) {                          \
    std::ostringstream errMsg;                  \
    errMsg << msgs;                             \
    THROW(errMsg.str());                        \
  }

#define THROWSC(msgs, cause) {                  \
    std::ostringstream errMsg;                  \
    errMsg << msgs;                             \
    THROWC(errMsg.str(), cause);                \
  }
#endif // THROW

#endif
Revision:	1492
Committed:	Mon Aug 16 18:07:50 2010 UTC (15 years, 2 months ago) by chuckv
File size:	7822 byte(s)
Log Message:	Adding exception and reporting mechanism from ProtoMol to OpenMD.
#	User	Rev	Content
1	chuckv	1492	/*******************************************************************\
2
3			Copyright (C) 2003 Joseph Coffland
4
5			This program is free software; you can redistribute it and/or
6			modify it under the terms of the GNU General Public License
7			as published by the Free Software Foundation; either version 2
8			of the License, or (at your option) any later version.
9
10			This program is distributed in the hope that it will be useful,
11			but WITHOUT ANY WARRANTY; without even the implied warranty of
12			MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13			GNU General Public License for more details.
14
15			You should have received a copy of the GNU General Public License
16			along with this program; if not, write to the Free Software
17			Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
18			02111-1307, USA.
19
20			For information regarding this software email
21			jcofflan@users.sourceforge.net
22
23			\*******************************************************************/
24
25
26			#ifndef UTILS_EXCEPTION_H
27			#define UTILS_EXCEPTION_H
28
29			#include "config.h"
30			#include "utils/FileLocation.hpp"
31			#include "utils/SmartPointer.hpp"
32			#include "utils/Zap.hpp"
33
34			#ifdef HAVE_DEBUGGER
35			#include "debug/Debugger.hpp"
36			#endif
37			#ifdef HAVE_BACKTRACE
38			#include "debug/Backtrace.hpp"
39			#endif
40
41			#include <vector>
42			#include <string>
43			#include <iostream>
44
45			#ifdef HAVE_NO_SSTREAM
46			#include "utils/sstream_local.hpp"
47			#else
48			#include <sstream>
49			#endif
50
51			#if defined(HAVE_DEBUGGER) \|\| defined(HAVE_BACKTRACE)
52			#define HAVE_STACK_TRACE
53			#endif
54
55
56			namespace OpenMD {
57			// Forward Declarations
58			template <class T, class DEALLOC_T>
59			class SmartPointer;
60
61			/**
62			* Exception is a general purpose exception class. It is similar to
63			* the java Exception class. A Exception can carry a message,
64			* a FileLocation and/or a pointer to an exception which was the
65			* original cause.
66			*
67			* There are preprocessor macros that can be used to as a convient way
68			* to add the current file, line and column where the exception occured.
69			* These are:
70			*
71			* THROW(const string message)
72			*
73			* and
74			*
75			* ASSERT_OR_THROW(const string message, const bool condition)
76			*
77			* The latter can be used to in place of assert(const bool condition).
78			* Throwing an exception instead of aborting overcomes some of the
79			* limitations of the standard assert.
80			*/
81			class Exception {
82			#ifdef HAVE_STACK_TRACE
83			public:
84			typedef std::vector<std::string> trace_t;
85			#endif
86
87			private:
88			std::string message;
89			FileLocation location;
90			SmartPointer<Exception> cause;
91			#ifdef HAVE_STACK_TRACE
92			SmartPointer<trace_t> trace;
93			#endif
94
95			public:
96			static unsigned int causePrintLevel;
97			#ifdef HAVE_STACK_TRACE
98			static bool enableStackTraces;
99			#endif
100
101			Exception() {init();}
102
103			Exception(const std::string message) : message(message) {
104			init();
105			}
106
107			Exception(const std::string message, const FileLocation &location)
108			: message(message), location(location) {
109			init();
110			}
111
112			Exception(const std::string message, Exception &cause) :
113			message(message) {
114			this->cause = new Exception(cause);
115			init();
116			}
117
118			Exception(const std::string message, const FileLocation &location,
119			const Exception &cause) :
120			message(message), location(location) {
121			this->cause = new Exception(cause);
122			init();
123			}
124
125			#ifdef HAVE_STACK_TRACE
126			Exception(const Exception &e, const Exception &cause) :
127			message(e.message), location(e.location), cause(new Exception(cause)),
128			trace(e.trace) {}
129
130			/// Copy constructor
131			Exception(const Exception &e) :
132			message(e.message), location(e.location), cause(e.cause),
133			trace(e.trace) {}
134			#else
135			Exception(const Exception &e, const Exception &cause) :
136			message(e.message), location(e.location), cause(new Exception(cause)) {}
137
138			/// Copy constructor
139			Exception(const Exception &e) :
140			message(e.message), location(e.location), cause(e.cause) {}
141			#endif
142
143			virtual ~Exception() {}
144
145			const std::string &getMessage() const {return message;}
146			const FileLocation &getLocation() const {return location;}
147
148			/**
149			* @return A SmartPointer to the Exception that caused this
150			* exception or NULL.
151			*/
152			SmartPointer<Exception> getCause() const {return cause;}
153
154			#ifdef HAVE_STACK_TRACE
155			SmartPointer<trace_t> getTrace() const {return trace;}
156			#endif
157
158			/**
159			* Prints the complete exception recuring down to the cause exception if
160			* not null. WARNING: If there are many layers of causes this function
161			* could print a very large amount of data. This can be limited by
162			* setting the causePrintLevel variable.
163			*
164			* @param stream The output stream.
165			* @param printLocations Print file locations.
166			* @param printLevel The current cause print level.
167			*
168			* @return A reference to the passed stream.
169			*/
170			std::ostream &print(std::ostream &stream,
171			bool printLocations = true,
172			unsigned int printLevel = 0) const {
173
174			stream << message << std::endl;
175
176			if (printLocations && !location.isEmpty())
177			stream << "@ " << location << std::endl;
178
179			#ifdef HAVE_STACK_TRACE
180			if (enableStackTraces && !trace.isNull()) {
181			trace_t::iterator it;
182			for (it = trace->begin(); it != trace->end(); it++)
183			stream << std::endl << " " << *it;
184			}
185			#endif
186
187			if (!cause.isNull()) {
188			stream << std::endl << " ";
189
190			if (printLevel > causePrintLevel) {
191			stream << "Aborting exception dump due to causePrintLevel limit! "
192			<< "Increase Exception::causePrintLevel to see more.";
193
194			} else {
195			stream << "caused by: ";
196			cause->print(stream, printLocations, printLevel);
197			}
198			}
199
200			return stream;
201			}
202
203			protected:
204			void init() {
205			#ifdef HAVE_STACK_TRACE
206			if (enableStackTraces) {
207			trace = new trace_t();
208
209			// When Optimization is turned on functions such as this
210			// one are often inlined and not visable to the debugger.
211			// This means stack traces for optimized code will often
212			// be incomplete.
213			#ifdef __OPTIMIZE__
214			trace->push_back("Warning: Optimization can cause incomplete traces.");
215			#endif
216
217			#if defined(HAVE_DEBUGGER) && defined(HAVE_BACKTRACE)
218			if (!Debugger::getStackTrace(*trace)) {
219			trace->clear();
220			Backtrace::getStackTrace(*trace);
221			}
222
223			#else
224			#if defined(HAVE_DEBUGGER)
225			Debugger::getStackTrace(*trace);
226			#else
227			Backtrace::getStackTrace(*trace);
228			#endif
229			#endif
230			}
231			#endif // HAVE_STACK_TRACE
232			}
233
234			friend std::ostream &operator<<(std::ostream &, const Exception &);
235			};
236
237			/**
238			* An stream output operator for Exception. This allows you to print the
239			* text of an exception to a stream like so:
240			*
241			* . . .
242			* } catch (Exception &e) {
243			* cout << e << endl;
244			* return 0;
245			* }
246			*/
247			inline std::ostream &operator<<(std::ostream &stream, const Exception &e) {
248			e.print(stream);
249			return stream;
250			}
251			}
252
253			#ifndef THROW
254			#define THROW(msg) throw OpenMD::Exception((msg), FILE_LOCATION)
255			#define THROWC(msg, cause) \
256			throw OpenMD::Exception((msg), FILE_LOCATION, (cause))
257			#define ASSERT_OR_THROW(msg, condition) {if (!(condition)) THROW(msg);}
258
259			#define THROWS(msgs) { \
260			std::ostringstream errMsg; \
261			errMsg << msgs; \
262			THROW(errMsg.str()); \
263			}
264
265			#define THROWSC(msgs, cause) { \
266			std::ostringstream errMsg; \
267			errMsg << msgs; \
268			THROWC(errMsg.str(), cause); \
269			}
270			#endif // THROW
271
272			#endif