trap.h

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// trap.h - written and placed in public domain by Jeffrey Walton.
//          Copyright assigned to Crypto++ project


#ifndef CRYPTOPP_TRAP_H
#define CRYPTOPP_TRAP_H

#include "config.h"

#if defined(CRYPTOPP_DEBUG)
#  include <iostream>
#  include <sstream>
#  if defined(UNIX_SIGNALS_AVAILABLE)
#    include "ossig.h"
#  elif defined(CRYPTOPP_WIN32_AVAILABLE) && !defined(__CYGWIN__)
#    if (_MSC_VER >= 1400)
#      include <intrin.h>
#    endif
#  endif
#endif // CRYPTOPP_DEBUG

// ************** run-time assertion ***************

#if defined(CRYPTOPP_DOXYGEN_PROCESSING)
#  define CRYPTOPP_ASSERT(exp) { ... }
#endif

#if defined(CRYPTOPP_DEBUG) && defined(UNIX_SIGNALS_AVAILABLE)
#  define CRYPTOPP_ASSERT(exp) {                                  \
    if (!(exp)) {                                                 \
      std::ostringstream oss;                                     \
      oss << "Assertion failed: " << (char*)(__FILE__) << "("     \
          << (int)(__LINE__) << "): " << (char*)(__func__)        \
          << std::endl;                                           \
      std::cerr << oss.str();                                     \
      raise(SIGTRAP);                                             \
    }                                                             \
  }
#elif CRYPTOPP_DEBUG && defined(CRYPTOPP_WIN32_AVAILABLE) && !defined(__CYGWIN__)
#  define CRYPTOPP_ASSERT(exp) {                                  \
    if (!(exp)) {                                                 \
      std::ostringstream oss;                                     \
      oss << "Assertion failed: " << (char*)(__FILE__) << "("     \
          << (int)(__LINE__) << "): " << (char*)(__FUNCTION__)    \
          << std::endl;                                           \
      std::cerr << oss.str();                                     \
      __debugbreak();                                             \
    }                                                             \
  }
#endif // DEBUG and Unix or Windows

// Remove CRYPTOPP_ASSERT in non-debug builds.
//  Can't use CRYPTOPP_UNUSED due to circular dependency
#ifndef CRYPTOPP_ASSERT
#  define CRYPTOPP_ASSERT(exp) (void)0
#endif

NAMESPACE_BEGIN(CryptoPP)

// ************** SIGTRAP handler ***************

#if (CRYPTOPP_DEBUG && defined(UNIX_SIGNALS_AVAILABLE)) || defined(CRYPTOPP_DOXYGEN_PROCESSING)

#if defined(CRYPTOPP_DOXYGEN_PROCESSING)
class DebugTrapHandler : public SignalHandler<SIGILL, false> { };
#else
typedef SignalHandler<SIGILL, false> DebugTrapHandler;
#endif

#endif  // Linux, Unix and Documentation

NAMESPACE_END

#endif // CRYPTOPP_TRAP_H