execution_monitor.ipp 47.9 KB
Newer Older
xuebingbing's avatar
xuebingbing committed
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367
//  (C) Copyright Gennadiy Rozental 2001-2008.
//  (C) Copyright Beman Dawes and Ullrich Koethe 1995-2001.
//  Use, modification, and distribution are subject to the
//  Boost Software License, Version 1.0. (See accompanying file
//  http://www.boost.org/LICENSE_1_0.txt)

//  See http://www.boost.org/libs/test for the library home page.
//
//  File        : $RCSfile$
//
//  Version     : $Revision$
//
//  Description : provides execution monitor implementation for all supported
//  configurations, including Microsoft structured exception based, unix signals
//  based and special workarounds for borland
//
//  Note that when testing requirements or user wishes preclude use of this
//  file as a separate compilation unit, it may be included as a header file.
//
//  Header dependencies are deliberately restricted to reduce coupling to other
//  boost libraries.
// ***************************************************************************

#ifndef BOOST_TEST_EXECUTION_MONITOR_IPP_012205GER
#define BOOST_TEST_EXECUTION_MONITOR_IPP_012205GER

// Boost.Test
#include <boost/test/detail/config.hpp>
#include <boost/test/detail/workaround.hpp>
#include <boost/test/execution_monitor.hpp>
#include <boost/test/debug.hpp>

// Boost
#include <boost/cstdlib.hpp>    // for exit codes
#include <boost/config.hpp>     // for workarounds
#include <boost/exception/get_error_info.hpp> // for get_error_info
#include <boost/exception/current_exception_cast.hpp> // for current_exception_cast

// STL
#include <string>               // for std::string
#include <new>                  // for std::bad_alloc
#include <typeinfo>             // for std::bad_cast, std::bad_typeid
#include <exception>            // for std::exception, std::bad_exception
#include <stdexcept>            // for std exception hierarchy
#include <cstring>              // for C string API
#include <cassert>              // for assert
#include <cstddef>              // for NULL
#include <cstdio>               // for vsnprintf
#include <cstdarg>              // for varargs

#ifdef BOOST_NO_STDC_NAMESPACE
namespace std { using ::strerror; using ::strlen; using ::strncat; }
#endif

// to use vsnprintf
#if defined(__SUNPRO_CC) || defined(__SunOS)
#  include <stdio.h>
#  include <stdarg.h>
using std::va_list;
#endif

// to use vsnprintf 
#if defined(__QNXNTO__) 
#  include <stdio.h> 
#endif

#if defined(_WIN32) && !defined(BOOST_DISABLE_WIN32) &&                  \
    (!defined(__COMO__) && !defined(__MWERKS__) && !defined(__GNUC__) || \
     BOOST_WORKAROUND(__MWERKS__, >= 0x3000))

#  define BOOST_SEH_BASED_SIGNAL_HANDLING

#  include <windows.h>

#  if defined(__MWERKS__) || (defined(_MSC_VER) && !defined(UNDER_CE))
#    include <eh.h>
#  endif

#  if defined(__BORLANDC__) && __BORLANDC__ >= 0x560 || defined(__MWERKS__)
#    include <stdint.h>
#  endif

#  if defined(__BORLANDC__) && __BORLANDC__ < 0x560
    typedef unsigned uintptr_t;
#  endif

#  if BOOST_WORKAROUND(_MSC_VER,  < 1300 ) || defined(UNDER_CE)
typedef void* uintptr_t;
#  endif

// for the FP control routines
#include <float.h>

#ifndef EM_INVALID
#define EM_INVALID _EM_INVALID
#endif

#ifndef EM_DENORMAL
#define EM_DENORMAL _EM_DENORMAL
#endif

#ifndef EM_ZERODIVIDE
#define EM_ZERODIVIDE _EM_ZERODIVIDE
#endif

#ifndef EM_OVERFLOW
#define EM_OVERFLOW _EM_OVERFLOW
#endif

#ifndef EM_UNDERFLOW
#define EM_UNDERFLOW _EM_UNDERFLOW
#endif

#ifndef MCW_EM
#define MCW_EM _MCW_EM
#endif

#  if !defined(NDEBUG) && defined(_MSC_VER) && !defined(UNDER_CE)
#    include <crtdbg.h>
#    define BOOST_TEST_CRT_HOOK_TYPE    _CRT_REPORT_HOOK
#    define BOOST_TEST_CRT_ASSERT       _CRT_ASSERT
#    define BOOST_TEST_CRT_ERROR        _CRT_ERROR
#    define BOOST_TEST_CRT_SET_HOOK(H)  _CrtSetReportHook(H)
#  else
#    define BOOST_TEST_CRT_HOOK_TYPE    void*
#    define BOOST_TEST_CRT_ASSERT       2
#    define BOOST_TEST_CRT_ERROR        1
#    define BOOST_TEST_CRT_SET_HOOK(H)  (void*)(H)
#  endif

#  if !BOOST_WORKAROUND(_MSC_VER,  >= 1400 ) || defined(UNDER_CE)

typedef void* _invalid_parameter_handler;

inline _invalid_parameter_handler
_set_invalid_parameter_handler( _invalid_parameter_handler arg )
{
    return arg;
}

#  endif

#  if BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x0564)) || defined(UNDER_CE)

namespace { void _set_se_translator( void* ) {} }

#  endif

#elif defined(BOOST_HAS_SIGACTION)

#  define BOOST_SIGACTION_BASED_SIGNAL_HANDLING

#  include <unistd.h>
#  include <signal.h>
#  include <setjmp.h>

#  if defined(__FreeBSD__)  

#    ifndef SIGPOLL
#      define SIGPOLL SIGIO
#    endif

#    if (__FreeBSD_version < 70100)

#      define ILL_ILLADR 0 // ILL_RESAD_FAULT
#      define ILL_PRVOPC ILL_PRIVIN_FAULT
#      define ILL_ILLOPN 2 // ILL_RESOP_FAULT
#      define ILL_COPROC ILL_FPOP_FAULT

#      define BOOST_TEST_LIMITED_SIGNAL_DETAILS
#      define BOOST_TEST_IGNORE_SIGCHLD

#    endif 
#  endif 

#  if !defined(__CYGWIN__) && !defined(__QNXNTO__)
#   define BOOST_TEST_USE_ALT_STACK
#  endif

#  if defined(SIGPOLL) && !defined(__CYGWIN__)                              && \
      !(defined(macintosh) || defined(__APPLE__) || defined(__APPLE_CC__))  && \
      !defined(__NetBSD__)                                                  && \
      !defined(__QNXNTO__)
#    define BOOST_TEST_CATCH_SIGPOLL
#  endif

#  ifdef BOOST_TEST_USE_ALT_STACK
#    define BOOST_TEST_ALT_STACK_SIZE SIGSTKSZ
#  endif

#else

#  define BOOST_NO_SIGNAL_HANDLING

#endif

#ifndef UNDER_CE
#include <errno.h>
#endif

#include <boost/test/detail/suppress_warnings.hpp>

//____________________________________________________________________________//

namespace boost {

// ************************************************************************** //
// **************                  report_error                ************** //
// ************************************************************************** //

namespace detail {

#ifdef __BORLANDC__
#  define BOOST_TEST_VSNPRINTF( a1, a2, a3, a4 ) std::vsnprintf( (a1), (a2), (a3), (a4) )
#elif BOOST_WORKAROUND(_MSC_VER, <= 1310) || \
      BOOST_WORKAROUND(__MWERKS__, BOOST_TESTED_AT(0x3000)) || \
      defined(UNDER_CE)
#  define BOOST_TEST_VSNPRINTF( a1, a2, a3, a4 ) _vsnprintf( (a1), (a2), (a3), (a4) )
#else
#  define BOOST_TEST_VSNPRINTF( a1, a2, a3, a4 ) vsnprintf( (a1), (a2), (a3), (a4) )
#endif

template <typename ErrorInfo>
typename ErrorInfo::value_type
extract( boost::exception const* ex )
{
    if( !ex )
        return 0;

    typename ErrorInfo::value_type const * val = boost::get_error_info<ErrorInfo>( *ex );

    return val ? *val : 0;
}

//____________________________________________________________________________//

static void
report_error( execution_exception::error_code ec, boost::exception const* be, char const* format, va_list* args )
{
    static const int REPORT_ERROR_BUFFER_SIZE = 512;
    static char buf[REPORT_ERROR_BUFFER_SIZE];

    BOOST_TEST_VSNPRINTF( buf, sizeof(buf)-1, format, *args ); 
    buf[sizeof(buf)-1] = 0;

    va_end( *args );

    throw execution_exception( ec, buf, execution_exception::location( extract<throw_file>( be ), 
                                                                       extract<throw_line>( be ),
                                                                       extract<throw_function>( be ) ) );
}

//____________________________________________________________________________//

static void
report_error( execution_exception::error_code ec, char const* format, ... )
{
    va_list args;
    va_start( args, format );

    report_error( ec, 0, format, &args );
}

//____________________________________________________________________________//

static void
report_error( execution_exception::error_code ec, boost::exception const* be, char const* format, ... )
{
    va_list args;
    va_start( args, format );

    report_error( ec, be, format, &args );
}

//____________________________________________________________________________//

template<typename Tr,typename Functor>
inline int
do_invoke( Tr const& tr, Functor const& F )
{
    return tr ? (*tr)( F ) : F();
}

//____________________________________________________________________________//

} // namespace detail

#if defined(BOOST_SIGACTION_BASED_SIGNAL_HANDLING)

// ************************************************************************** //
// **************       Sigaction based signal handling        ************** //
// ************************************************************************** //

namespace detail {

// ************************************************************************** //
// **************    boost::detail::system_signal_exception    ************** //
// ************************************************************************** //

class system_signal_exception {
public:
    // Constructor
    system_signal_exception()
    : m_sig_info( 0 )
    , m_context( 0 )
    {}

    // Access methods
    void        operator()( siginfo_t* i, void* c )
    {
        m_sig_info  = i;
        m_context   = c;
    }
    void        report() const;

private:
    // Data members
    siginfo_t*  m_sig_info; // system signal detailed info
    void*       m_context;  // signal context
};

//____________________________________________________________________________//

void
system_signal_exception::report() const
{
    if( !m_sig_info )
        return; // no error actually occur?

    switch( m_sig_info->si_code ) {
    case SI_USER:
        report_error( execution_exception::system_error,
                      "signal: generated by kill() (or family); uid=%d; pid=%d",
                      (int)m_sig_info->si_uid, (int)m_sig_info->si_pid );
        break;
    case SI_QUEUE:
        report_error( execution_exception::system_error,
                      "signal: sent by sigqueue()" );
        break;
    case SI_TIMER:
        report_error( execution_exception::system_error,
                      "signal: the expiration of a timer set by timer_settimer()" );
        break;
    case SI_ASYNCIO:
        report_error( execution_exception::system_error,
                      "signal: generated by the completion of an asynchronous I/O request" );
        break;
    case SI_MESGQ:
        report_error( execution_exception::system_error,
                      "signal: generated by the the arrival of a message on an empty message queue" );
        break;
    default:
        break;
    }

    switch( m_sig_info->si_signo ) {
    case SIGILL:
        switch( m_sig_info->si_code ) {
#ifndef BOOST_TEST_LIMITED_SIGNAL_DETAILS
        case ILL_ILLOPC:
            report_error( execution_exception::system_fatal_error,
                          "signal: illegal opcode; address of failing instruction: 0x%08lx",
                          m_sig_info->si_addr );
            break;
        case ILL_ILLTRP:
            report_error( execution_exception::system_fatal_error,
                          "signal: illegal trap; address of failing instruction: 0x%08lx",
                          m_sig_info->si_addr );
            break;
        case ILL_PRVREG:
            report_error( execution_exception::system_fatal_error,
                          "signal: privileged register; address of failing instruction: 0x%08lx",
                          m_sig_info->si_addr );
            break;
        case ILL_BADSTK:
            report_error( execution_exception::system_fatal_error,
                          "signal: internal stack error; address of failing instruction: 0x%08lx",
                          m_sig_info->si_addr );
            break;
#endif
        case ILL_ILLOPN:
            report_error( execution_exception::system_fatal_error,
                          "signal: illegal operand; address of failing instruction: 0x%08lx",
                          m_sig_info->si_addr );
            break;
        case ILL_ILLADR:
            report_error( execution_exception::system_fatal_error,
                          "signal: illegal addressing mode; address of failing instruction: 0x%08lx",
                          m_sig_info->si_addr );
            break;
        case ILL_PRVOPC:
            report_error( execution_exception::system_fatal_error,
                          "signal: privileged opcode; address of failing instruction: 0x%08lx",
                          m_sig_info->si_addr );
            break;
        case ILL_COPROC:
            report_error( execution_exception::system_fatal_error,
                          "signal: co-processor error; address of failing instruction: 0x%08lx",
                          m_sig_info->si_addr );
            break;
        default: 
            report_error( execution_exception::system_fatal_error, 
                          "signal: SIGILL, si_code: %d (illegal instruction; address of failing instruction: 0x%08lx)", 
                          m_sig_info->si_addr, m_sig_info->si_code ); 
            break;
        }
        break;

    case SIGFPE:
        switch( m_sig_info->si_code ) {
        case FPE_INTDIV:
            report_error( execution_exception::system_error,
                          "signal: integer divide by zero; address of failing instruction: 0x%08lx",
                          m_sig_info->si_addr );
            break;
        case FPE_INTOVF:
            report_error( execution_exception::system_error,
                          "signal: integer overflow; address of failing instruction: 0x%08lx",
                          m_sig_info->si_addr );
            break;
        case FPE_FLTDIV:
            report_error( execution_exception::system_error,
                          "signal: floating point divide by zero; address of failing instruction: 0x%08lx",
                          m_sig_info->si_addr );
            break;
        case FPE_FLTOVF:
            report_error( execution_exception::system_error,
                          "signal: floating point overflow; address of failing instruction: 0x%08lx",
                          m_sig_info->si_addr );
            break;
        case FPE_FLTUND:
            report_error( execution_exception::system_error,
                          "signal: floating point underflow; address of failing instruction: 0x%08lx",
                          m_sig_info->si_addr );
            break;
        case FPE_FLTRES:
            report_error( execution_exception::system_error,
                          "signal: floating point inexact result; address of failing instruction: 0x%08lx",
                          m_sig_info->si_addr );
            break;
        case FPE_FLTINV:
            report_error( execution_exception::system_error,
                          "signal: invalid floating point operation; address of failing instruction: 0x%08lx",
                          m_sig_info->si_addr );
            break;
        case FPE_FLTSUB:
            report_error( execution_exception::system_error,
                          "signal: subscript out of range; address of failing instruction: 0x%08lx",
                          m_sig_info->si_addr );
            break;
        default:
            report_error( execution_exception::system_error,
                          "signal: SIGFPE, si_code: %d (errnoneous arithmetic operations; address of failing instruction: 0x%08lx)",
                          m_sig_info->si_addr, m_sig_info->si_code );
            break;
        }
        break;

    case SIGSEGV:
        switch( m_sig_info->si_code ) {
#ifndef BOOST_TEST_LIMITED_SIGNAL_DETAILS
        case SEGV_MAPERR:
            report_error( execution_exception::system_fatal_error,
                          "memory access violation at address: 0x%08lx: no mapping at fault address",
                          m_sig_info->si_addr );
            break;
        case SEGV_ACCERR:
            report_error( execution_exception::system_fatal_error,
                          "memory access violation at address: 0x%08lx: invalid permissions",
                          m_sig_info->si_addr );
            break;
#endif
        default:
            report_error( execution_exception::system_fatal_error,
                          "signal: SIGSEGV, si_code: %d (memory access violation at address: 0x%08lx)",
                          m_sig_info->si_addr, m_sig_info->si_code );
            break;
        }
        break;

    case SIGBUS:
        switch( m_sig_info->si_code ) {
#ifndef BOOST_TEST_LIMITED_SIGNAL_DETAILS
        case BUS_ADRALN:
            report_error( execution_exception::system_fatal_error,
                          "memory access violation at address: 0x%08lx: invalid address alignment",
                          m_sig_info->si_addr );
            break;
        case BUS_ADRERR:
            report_error( execution_exception::system_fatal_error,
                          "memory access violation at address: 0x%08lx: non-existent physical address",
                          m_sig_info->si_addr );
            break;
        case BUS_OBJERR:
            report_error( execution_exception::system_fatal_error,
                          "memory access violation at address: 0x%08lx: object specific hardware error",
                          m_sig_info->si_addr );
            break;
#endif
        default:
            report_error( execution_exception::system_fatal_error,
                          "signal: SIGSEGV, si_code: %d (memory access violation at address: 0x%08lx)",
                          m_sig_info->si_addr, m_sig_info->si_code );
            break;
        }
        break;

    case SIGCHLD:
        switch( m_sig_info->si_code ) {
#ifndef BOOST_TEST_LIMITED_SIGNAL_DETAILS
        case CLD_EXITED:
            report_error( execution_exception::system_error,
                          "child has exited; pid: %d; uid: %d; exit value: %d",
                          (int)m_sig_info->si_pid, (int)m_sig_info->si_uid, (int)m_sig_info->si_status );
            break;
        case CLD_KILLED:
            report_error( execution_exception::system_error,
                          "child was killed; pid: %d; uid: %d; exit value: %d",
                          (int)m_sig_info->si_pid, (int)m_sig_info->si_uid, (int)m_sig_info->si_status );
            break;
        case CLD_DUMPED:
            report_error( execution_exception::system_error,
                          "child terminated abnormally; pid: %d; uid: %d; exit value: %d",
                          (int)m_sig_info->si_pid, (int)m_sig_info->si_uid, (int)m_sig_info->si_status );
            break;
        case CLD_TRAPPED:
            report_error( execution_exception::system_error,
                          "traced child has trapped; pid: %d; uid: %d; exit value: %d",
                          (int)m_sig_info->si_pid, (int)m_sig_info->si_uid, (int)m_sig_info->si_status );
            break;
        case CLD_STOPPED:
            report_error( execution_exception::system_error,
                          "child has stopped; pid: %d; uid: %d; exit value: %d",
                          (int)m_sig_info->si_pid, (int)m_sig_info->si_uid, (int)m_sig_info->si_status );
            break;
        case CLD_CONTINUED:
            report_error( execution_exception::system_error,
                          "stopped child had continued; pid: %d; uid: %d; exit value: %d",
                          (int)m_sig_info->si_pid, (int)m_sig_info->si_uid, (int)m_sig_info->si_status );
            break;
#endif
        default:
            report_error( execution_exception::system_error,
                          "signal: SIGCHLD, si_code: %d (child process has terminated; pid: %d; uid: %d; exit value: %d)",
                          (int)m_sig_info->si_pid, (int)m_sig_info->si_uid, (int)m_sig_info->si_status, m_sig_info->si_code );
            break;
        }
        break;

#if defined(BOOST_TEST_CATCH_SIGPOLL)

    case SIGPOLL:
        switch( m_sig_info->si_code ) {
#ifndef BOOST_TEST_LIMITED_SIGNAL_DETAILS
        case POLL_IN:
            report_error( execution_exception::system_error,
                          "data input available; band event %d",
                          (int)m_sig_info->si_band );
            break;
        case POLL_OUT:
            report_error( execution_exception::system_error,
                          "output buffers available; band event %d",
                          (int)m_sig_info->si_band );
            break;
        case POLL_MSG:
            report_error( execution_exception::system_error,
                          "input message available; band event %d",
                          (int)m_sig_info->si_band );
            break;
        case POLL_ERR:
            report_error( execution_exception::system_error,
                          "i/o error; band event %d",
                          (int)m_sig_info->si_band );
            break;
        case POLL_PRI:
            report_error( execution_exception::system_error,
                          "high priority input available; band event %d",
                          (int)m_sig_info->si_band );
            break;
#if defined(POLL_ERR) && defined(POLL_HUP) && (POLL_ERR - POLL_HUP)
        case POLL_HUP:
            report_error( execution_exception::system_error,
                          "device disconnected; band event %d",
                          (int)m_sig_info->si_band );
            break;
#endif
#endif
        default: 
            report_error( execution_exception::system_error, 
                          "signal: SIGPOLL, si_code: %d (asynchronous I/O event occured; band event %d)", 
                          (int)m_sig_info->si_band, m_sig_info->si_code ); 
            break; 
        }
        break;

#endif

    case SIGABRT:
        report_error( execution_exception::system_error,
                      "signal: SIGABRT (application abort requested)" );
        break;

    case SIGALRM:
        report_error( execution_exception::timeout_error,
                      "signal: SIGALRM (timeout while executing function)" );
        break;

    default:
        report_error( execution_exception::system_error, "unrecognized signal" );
    }
}

//____________________________________________________________________________//

// ************************************************************************** //
// **************         boost::detail::signal_action         ************** //
// ************************************************************************** //

// Forward declaration
extern "C" {
static void execution_monitor_jumping_signal_handler( int sig, siginfo_t* info, void* context );
static void execution_monitor_attaching_signal_handler( int sig, siginfo_t* info, void* context );
}

class signal_action {
    typedef struct sigaction* sigaction_ptr;
public:
    //Constructor
    signal_action();
    signal_action( int sig, bool install, bool attach_dbg, char* alt_stack );
    ~signal_action();

private:
    // Data members
    int                 m_sig;
    bool                m_installed;
    struct sigaction    m_new_action;
    struct sigaction    m_old_action;
};

//____________________________________________________________________________//

signal_action::signal_action()
: m_installed( false )
{}

//____________________________________________________________________________//

signal_action::signal_action( int sig, bool install, bool attach_dbg, char* alt_stack )
: m_sig( sig )
, m_installed( install )
{
    if( !install )
        return;

    std::memset( &m_new_action, 0, sizeof(struct sigaction) );

    BOOST_TEST_SYS_ASSERT( ::sigaction( m_sig , sigaction_ptr(), &m_new_action ) != -1 );

    if( m_new_action.sa_sigaction || m_new_action.sa_handler ) {
        m_installed = false;
        return;
    }

    m_new_action.sa_flags     |= SA_SIGINFO;
    m_new_action.sa_sigaction  = attach_dbg ? &execution_monitor_attaching_signal_handler
                                            : &execution_monitor_jumping_signal_handler;
    BOOST_TEST_SYS_ASSERT( sigemptyset( &m_new_action.sa_mask ) != -1 );

#ifdef BOOST_TEST_USE_ALT_STACK
    if( alt_stack )
        m_new_action.sa_flags |= SA_ONSTACK;
#endif

    BOOST_TEST_SYS_ASSERT( ::sigaction( m_sig, &m_new_action, &m_old_action ) != -1 );
}

//____________________________________________________________________________//

signal_action::~signal_action()
{
    if( m_installed )
        ::sigaction( m_sig, &m_old_action , sigaction_ptr() );
}

//____________________________________________________________________________//

// ************************************************************************** //
// **************        boost::detail::signal_handler         ************** //
// ************************************************************************** //

class signal_handler {
public:
    // Constructor
    explicit signal_handler( bool catch_system_errors, int timeout, bool attach_dbg, char* alt_stack );

    // Destructor
    ~signal_handler();

    // access methods
    static sigjmp_buf&      jump_buffer()
    {
        assert( !!s_active_handler );

        return s_active_handler->m_sigjmp_buf;
    }

    static system_signal_exception&  sys_sig()
    {
        assert( !!s_active_handler );

        return s_active_handler->m_sys_sig;
    }

private:
    // Data members
    signal_handler*         m_prev_handler;
    int                     m_timeout;

    signal_action           m_ILL_action;
    signal_action           m_FPE_action;
    signal_action           m_SEGV_action;
    signal_action           m_BUS_action;
    signal_action           m_CHLD_action;
    signal_action           m_POLL_action;
    signal_action           m_ABRT_action;
    signal_action           m_ALRM_action;

    sigjmp_buf              m_sigjmp_buf;
    system_signal_exception m_sys_sig;

    static signal_handler*  s_active_handler;
};

// !! need to be placed in thread specific storage
typedef signal_handler* signal_handler_ptr;
signal_handler* signal_handler::s_active_handler = signal_handler_ptr();

//____________________________________________________________________________//

signal_handler::signal_handler( bool catch_system_errors, int timeout, bool attach_dbg, char* alt_stack )
: m_prev_handler( s_active_handler )
, m_timeout( timeout )
, m_ILL_action ( SIGILL , catch_system_errors, attach_dbg, alt_stack )
, m_FPE_action ( SIGFPE , catch_system_errors, attach_dbg, alt_stack )
, m_SEGV_action( SIGSEGV, catch_system_errors, attach_dbg, alt_stack )
, m_BUS_action ( SIGBUS , catch_system_errors, attach_dbg, alt_stack )
#ifndef BOOST_TEST_IGNORE_SIGCHLD
, m_CHLD_action( SIGCHLD, catch_system_errors, attach_dbg, alt_stack )
#endif
#ifdef BOOST_TEST_CATCH_SIGPOLL
, m_POLL_action( SIGPOLL, catch_system_errors, attach_dbg, alt_stack )
#endif
, m_ABRT_action( SIGABRT, catch_system_errors, attach_dbg, alt_stack )
, m_ALRM_action( SIGALRM, timeout > 0        , attach_dbg, alt_stack )
{
    s_active_handler = this;

    if( m_timeout > 0 ) {
        ::alarm( 0 );
        ::alarm( timeout );
    }

#ifdef BOOST_TEST_USE_ALT_STACK
    if( alt_stack ) {
        stack_t sigstk;
        std::memset( &sigstk, 0, sizeof(stack_t) );

        BOOST_TEST_SYS_ASSERT( ::sigaltstack( 0, &sigstk ) != -1 );

        if( sigstk.ss_flags & SS_DISABLE ) {
            sigstk.ss_sp    = alt_stack;
            sigstk.ss_size  = BOOST_TEST_ALT_STACK_SIZE;
            sigstk.ss_flags = 0;
            BOOST_TEST_SYS_ASSERT( ::sigaltstack( &sigstk, 0 ) != -1 );
        }
    }
#endif
}

//____________________________________________________________________________//

signal_handler::~signal_handler()
{
    assert( s_active_handler == this );

    if( m_timeout > 0 )
        ::alarm( 0 );

#ifdef BOOST_TEST_USE_ALT_STACK
#ifdef __GNUC__
    // We shouldn't need to explicitly initialize all the members here,
    // but gcc warns if we don't, so add initializers for each of the
    // members specified in the POSIX std:
    stack_t sigstk = { 0, 0, 0 };
#else
    stack_t sigstk = { };
#endif

    sigstk.ss_size  = MINSIGSTKSZ;
    sigstk.ss_flags = SS_DISABLE;
    BOOST_TEST_SYS_ASSERT( ::sigaltstack( &sigstk, 0 ) != -1 );
#endif

    s_active_handler = m_prev_handler;
}

//____________________________________________________________________________//

// ************************************************************************** //
// **************       execution_monitor_signal_handler       ************** //
// ************************************************************************** //

extern "C" {

static bool ignore_sigchild( siginfo_t* info )
{
    return info->si_signo == SIGCHLD
#ifndef BOOST_TEST_LIMITED_SIGNAL_DETAILS
            && info->si_code == CLD_EXITED 
#endif
#ifdef BOOST_TEST_IGNORE_NON_ZERO_CHILD_CODE
            ;
#else
            && (int)info->si_status == 0;
#endif
}

//____________________________________________________________________________//

static void execution_monitor_jumping_signal_handler( int sig, siginfo_t* info, void* context )
{
    if( ignore_sigchild( info ) )
        return;

    signal_handler::sys_sig()( info, context );

    siglongjmp( signal_handler::jump_buffer(), sig );
}

//____________________________________________________________________________//

static void execution_monitor_attaching_signal_handler( int sig, siginfo_t* info, void* context )
{
    if( ignore_sigchild( info ) )
        return;

    if( !debug::attach_debugger( false ) )
        execution_monitor_jumping_signal_handler( sig, info, context );

    // debugger attached; it will handle the signal
    BOOST_TEST_SYS_ASSERT( ::signal( sig, SIG_DFL ) != SIG_ERR );
}

//____________________________________________________________________________//

}

} // namespace detail

// ************************************************************************** //
// **************        execution_monitor::catch_signals      ************** //
// ************************************************************************** //

int
execution_monitor::catch_signals( unit_test::callback0<int> const& F )
{
    using namespace detail;

#if defined(__CYGWIN__)
    p_catch_system_errors.value = false;
#endif

#ifdef BOOST_TEST_USE_ALT_STACK
    if( !!p_use_alt_stack && !m_alt_stack )
        m_alt_stack.reset( new char[BOOST_TEST_ALT_STACK_SIZE] );
#else
    p_use_alt_stack.value = false;
#endif

    signal_handler local_signal_handler( p_catch_system_errors, p_timeout, p_auto_start_dbg, 
                                         !p_use_alt_stack ? 0 : m_alt_stack.get() );

    if( !sigsetjmp( signal_handler::jump_buffer(), 1 ) )
        return detail::do_invoke( m_custom_translators , F );
    else
        throw local_signal_handler.sys_sig();
}

//____________________________________________________________________________//

#elif defined(BOOST_SEH_BASED_SIGNAL_HANDLING)

// ************************************************************************** //
// **************   Microsoft structured exception handling    ************** //
// ************************************************************************** //

#if BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x0564))
namespace { void _set_se_translator( void* ) {} }
#endif

namespace detail {

// ************************************************************************** //
// **************    boost::detail::system_signal_exception    ************** //
// ************************************************************************** //

class system_signal_exception {
public:
    // Constructor
    explicit            system_signal_exception( execution_monitor* em )
    : m_em( em )
    , m_se_id( 0 )
    , m_fault_address( 0 )
    , m_dir( false )
    {}

    void                report() const;
    int                 operator()( unsigned int id, _EXCEPTION_POINTERS* exps );

private:
    // Data members
    execution_monitor*  m_em;

    unsigned int        m_se_id;
    void*               m_fault_address;
    bool                m_dir;
};

static void
seh_catch_preventer( unsigned int /* id */, _EXCEPTION_POINTERS* /* exps */ )
{
    throw;
}

//____________________________________________________________________________//

int
system_signal_exception::operator()( unsigned int id, _EXCEPTION_POINTERS* exps )
{
    const unsigned int MSFT_CPP_EXCEPT = 0xE06d7363; // EMSC

    if( !m_em->p_catch_system_errors || (id == MSFT_CPP_EXCEPT) )
        return EXCEPTION_CONTINUE_SEARCH;

    if( !!m_em->p_auto_start_dbg && debug::attach_debugger( false ) ) {
        m_em->p_catch_system_errors.value = false;
        _set_se_translator( &seh_catch_preventer );

        return EXCEPTION_CONTINUE_EXECUTION;
    }

    m_se_id = id;
    if( m_se_id == EXCEPTION_ACCESS_VIOLATION && exps->ExceptionRecord->NumberParameters == 2 ) {
        m_fault_address = (void*)exps->ExceptionRecord->ExceptionInformation[1];
        m_dir           = exps->ExceptionRecord->ExceptionInformation[0] == 0;
    }

    return EXCEPTION_EXECUTE_HANDLER;
}

//____________________________________________________________________________//

void
system_signal_exception::report() const
{
    switch( m_se_id ) {
    // cases classified as system_fatal_error
    case EXCEPTION_ACCESS_VIOLATION: {
        if( !m_fault_address )
            detail::report_error( execution_exception::system_fatal_error, "memory access violation" );
        else
            detail::report_error(
                execution_exception::system_fatal_error,
                    "memory access violation occurred at address 0x%08lx, while attempting to %s",
                    m_fault_address,
                    m_dir ? " read inaccessible data"
                          : " write to an inaccessible (or protected) address"
                    );
        break;
    }

    case EXCEPTION_ILLEGAL_INSTRUCTION:
        detail::report_error( execution_exception::system_fatal_error, "illegal instruction" );
        break;

    case EXCEPTION_PRIV_INSTRUCTION:
        detail::report_error( execution_exception::system_fatal_error, "tried to execute an instruction whose operation is not allowed in the current machine mode" );
        break;

    case EXCEPTION_IN_PAGE_ERROR:
        detail::report_error( execution_exception::system_fatal_error, "access to a memory page that is not present" );
        break;

    case EXCEPTION_STACK_OVERFLOW:
        detail::report_error( execution_exception::system_fatal_error, "stack overflow" );
        break;

    case EXCEPTION_NONCONTINUABLE_EXCEPTION:
        detail::report_error( execution_exception::system_fatal_error, "tried to continue execution after a non continuable exception occurred" );
        break;

    // cases classified as (non-fatal) system_trap
    case EXCEPTION_DATATYPE_MISALIGNMENT:
        detail::report_error( execution_exception::system_error, "data misalignment" );
        break;

    case EXCEPTION_INT_DIVIDE_BY_ZERO:
        detail::report_error( execution_exception::system_error, "integer divide by zero" );
        break;

    case EXCEPTION_INT_OVERFLOW:
        detail::report_error( execution_exception::system_error, "integer overflow" );
        break;

    case EXCEPTION_ARRAY_BOUNDS_EXCEEDED:
        detail::report_error( execution_exception::system_error, "array bounds exceeded" );
        break;

    case EXCEPTION_FLT_DIVIDE_BY_ZERO:
        detail::report_error( execution_exception::system_error, "floating point divide by zero" );
        break;

    case EXCEPTION_FLT_STACK_CHECK:
        detail::report_error( execution_exception::system_error,
                              "stack overflowed or underflowed as the result of a floating-point operation" );
        break;

    case EXCEPTION_FLT_DENORMAL_OPERAND:
        detail::report_error( execution_exception::system_error,
                              "operand of floating point operation is denormal" );
        break;

# if 0 // !! ?? 
    case EXCEPTION_FLT_INEXACT_RESULT:
        detail::report_error( execution_exception::system_error,
                              "result of a floating-point operation cannot be represented exactly" );
        break;
#endif

    case EXCEPTION_FLT_OVERFLOW:
        detail::report_error( execution_exception::system_error,
                              "exponent of a floating-point operation is greater than the magnitude allowed by the corresponding type" );
        break;

    case EXCEPTION_FLT_UNDERFLOW:
        detail::report_error( execution_exception::system_error,
                              "exponent of a floating-point operation is less than the magnitude allowed by the corresponding type" );
        break;

    case EXCEPTION_FLT_INVALID_OPERATION:
        detail::report_error( execution_exception::system_error, "floating point error" );
        break;

    case EXCEPTION_BREAKPOINT:
        detail::report_error( execution_exception::system_error, "breakpoint encountered" );
        break;

    default:
        detail::report_error( execution_exception::system_error, "unrecognized exception. Id: 0x%08lx", m_se_id );
        break;
    }
}

//____________________________________________________________________________//

// ************************************************************************** //
// **************          assert_reporting_function           ************** //
// ************************************************************************** //

int BOOST_TEST_CALL_DECL
assert_reporting_function( int reportType, char* userMessage, int* )
{
    switch( reportType ) {
    case BOOST_TEST_CRT_ASSERT:
        detail::report_error( execution_exception::user_error, userMessage );

        return 1; // return value and retVal are not important since we never reach this line
    case BOOST_TEST_CRT_ERROR:
        detail::report_error( execution_exception::system_error, userMessage );

        return 1; // return value and retVal are not important since we never reach this line
    default:
        return 0; // use usual reporting method
    }
} // assert_reporting_function

//____________________________________________________________________________//

void BOOST_TEST_CALL_DECL
invalid_param_handler( wchar_t const* /* expr */, 
                       wchar_t const* /* func */, 
                       wchar_t const* /* file */, 
                       unsigned int   /* line */,
                       uintptr_t      /* reserved */)
{
    detail::report_error( execution_exception::user_error, 
                          "Invalid parameter detected by C runtime library" );
}

//____________________________________________________________________________//

void BOOST_TEST_CALL_DECL
switch_fp_exceptions( bool on_off )
{
    if( !on_off )
        _clearfp();

    int cw = ::_controlfp( 0, 0 );

    int exceptions_mask = EM_INVALID|EM_DENORMAL|EM_ZERODIVIDE|EM_OVERFLOW|EM_UNDERFLOW;

    if( on_off )
        cw &= ~exceptions_mask; // Set the exception masks on, turn exceptions off
    else
        cw |= exceptions_mask;  // Set the exception masks off, turn exceptions on

    if( on_off )
        _clearfp();
        
    // Set the control word
    ::_controlfp( cw, MCW_EM );
}

//____________________________________________________________________________//

} // namespace detail

// ************************************************************************** //
// **************        execution_monitor::catch_signals      ************** //
// ************************************************************************** //

int
execution_monitor::catch_signals( unit_test::callback0<int> const& F )
{
    _invalid_parameter_handler old_iph = _invalid_parameter_handler();
    BOOST_TEST_CRT_HOOK_TYPE old_crt_hook = 0;

    if( !p_catch_system_errors )
        _set_se_translator( &detail::seh_catch_preventer );
    else {
        if( !!p_detect_fp_exceptions )
            detail::switch_fp_exceptions( true );

       old_crt_hook = BOOST_TEST_CRT_SET_HOOK( &detail::assert_reporting_function );

       old_iph = _set_invalid_parameter_handler( 
           reinterpret_cast<_invalid_parameter_handler>( &detail::invalid_param_handler ) );
    }

    detail::system_signal_exception SSE( this );
    
    int ret_val = 0;

    __try {
        __try {
            ret_val = detail::do_invoke( m_custom_translators, F );
        }
        __except( SSE( GetExceptionCode(), GetExceptionInformation() ) ) {
            throw SSE;
        }
    }
    __finally {
        if( !!p_catch_system_errors ) {
            if( !!p_detect_fp_exceptions )
                detail::switch_fp_exceptions( false );

            BOOST_TEST_CRT_SET_HOOK( old_crt_hook );

           _set_invalid_parameter_handler( old_iph );
        }
    }

    return ret_val;
}

//____________________________________________________________________________//

#else  // default signal handler

namespace detail {

class system_signal_exception {
public:
    void   report() const {}
};

} // namespace detail

int
execution_monitor::catch_signals( unit_test::callback0<int> const& F )
{
    return detail::do_invoke( m_custom_translators , F );
}

//____________________________________________________________________________//

#endif  // choose signal handler

// ************************************************************************** //
// **************          execution_monitor::execute          ************** //
// ************************************************************************** //

int
execution_monitor::execute( unit_test::callback0<int> const& F )
{
    if( debug::under_debugger() )
        p_catch_system_errors.value = false;

    try {
        return catch_signals( F );
    }

    //  Catch-clause reference arguments are a bit different from function
    //  arguments (ISO 15.3 paragraphs 18 & 19).  Apparently const isn't
    //  required.  Programmers ask for const anyhow, so we supply it.  That's
    //  easier than answering questions about non-const usage.

    catch( char const* ex )
      { detail::report_error( execution_exception::cpp_exception_error,
                              "C string: %s", ex ); }
    catch( std::string const& ex )
      { detail::report_error( execution_exception::cpp_exception_error, 
                              "std::string: %s", ex.c_str() ); }

    //  std:: exceptions

    catch( std::bad_alloc const& ex )
      { detail::report_error( execution_exception::cpp_exception_error, 
                              current_exception_cast<boost::exception const>(),
                              "std::bad_alloc: %s", ex.what() ); }

#if BOOST_WORKAROUND(__BORLANDC__, <= 0x0551)
    catch( std::bad_cast const& ex )
      { detail::report_error( execution_exception::cpp_exception_error, 
                              current_exception_cast<boost::exception const>(),
                              "std::bad_cast" ); }
    catch( std::bad_typeid const& ex )
      { detail::report_error( execution_exception::cpp_exception_error, 
                              current_exception_cast<boost::exception const>(),
                              "std::bad_typeid" ); }
#else
    catch( std::bad_cast const& ex )
      { detail::report_error( execution_exception::cpp_exception_error, 
                              current_exception_cast<boost::exception const>(),
                              "std::bad_cast: %s", ex.what() ); }
    catch( std::bad_typeid const& ex )
      { detail::report_error( execution_exception::cpp_exception_error, 
                              current_exception_cast<boost::exception const>(),
                              "std::bad_typeid: %s", ex.what() ); }
#endif

    catch( std::bad_exception const& ex )
      { detail::report_error( execution_exception::cpp_exception_error, 
                              current_exception_cast<boost::exception const>(),
                              "std::bad_exception: %s", ex.what() ); }
    catch( std::domain_error const& ex )
      { detail::report_error( execution_exception::cpp_exception_error, 
                              current_exception_cast<boost::exception const>(),
                              "std::domain_error: %s", ex.what() ); }
    catch( std::invalid_argument const& ex )
      { detail::report_error( execution_exception::cpp_exception_error, 
                              current_exception_cast<boost::exception const>(),
                              "std::invalid_argument: %s", ex.what() ); }
    catch( std::length_error const& ex )
      { detail::report_error( execution_exception::cpp_exception_error, 
                              current_exception_cast<boost::exception const>(),
                              "std::length_error: %s", ex.what() ); }
    catch( std::out_of_range const& ex )
      { detail::report_error( execution_exception::cpp_exception_error, 
                              current_exception_cast<boost::exception const>(),
                              "std::out_of_range: %s", ex.what() ); }
    catch( std::range_error const& ex )
      { detail::report_error( execution_exception::cpp_exception_error, 
                              current_exception_cast<boost::exception const>(),
                              "std::range_error: %s", ex.what() ); }
    catch( std::overflow_error const& ex )
      { detail::report_error( execution_exception::cpp_exception_error, 
                              current_exception_cast<boost::exception const>(),
                              "std::overflow_error: %s", ex.what() ); }
    catch( std::underflow_error const& ex )
      { detail::report_error( execution_exception::cpp_exception_error, 
                              current_exception_cast<boost::exception const>(),
                              "std::underflow_error: %s", ex.what() ); }
    catch( std::logic_error const& ex )
      { detail::report_error( execution_exception::cpp_exception_error, 
                              current_exception_cast<boost::exception const>(),
                              "std::logic_error: %s", ex.what() ); }
    catch( std::runtime_error const& ex )
      { detail::report_error( execution_exception::cpp_exception_error, 
                              current_exception_cast<boost::exception const>(),
                              "std::runtime_error: %s", ex.what() ); }
    catch( std::exception const& ex )
      { detail::report_error( execution_exception::cpp_exception_error, 
                              current_exception_cast<boost::exception const>(),
                              "std::exception: %s", ex.what() ); }

    catch( boost::exception const& ex )
    { detail::report_error( execution_exception::cpp_exception_error, 
                            &ex,
                            "unknown boost::exception" ); }

    // system errors
    catch( system_error const& ex )
      { detail::report_error( execution_exception::cpp_exception_error, 
                              "system_error produced by: %s: %s", ex.p_failed_exp.get(), std::strerror( ex.p_errno ) ); }
    catch( detail::system_signal_exception const& ex )
      { ex.report(); }

    // not an error
    catch( execution_aborted const& )
      { return 0; }

    // just forward
    catch( execution_exception const& )
      { throw; }

    // unknown error
    catch( ... )
      { detail::report_error( execution_exception::cpp_exception_error, "unknown type" ); }

    return 0;  // never reached; supplied to quiet compiler warnings
} // execute

//____________________________________________________________________________//

// ************************************************************************** //
// **************                  system_error                ************** //
// ************************************************************************** //

system_error::system_error( char const* exp )
#ifdef UNDER_CE
: p_errno( GetLastError() )
#else
: p_errno( errno )
#endif
, p_failed_exp( exp )
{}

//____________________________________________________________________________//

// ************************************************************************** //
// **************              execution_exception             ************** //
// ************************************************************************** //

execution_exception::execution_exception( error_code ec_, const_string what_msg_, location const& location_ )
: m_error_code( ec_ )
, m_what( what_msg_.empty() ? BOOST_TEST_L( "uncaught exception, system error or abort requested" ) : what_msg_ )
, m_location( location_ )
{}

//____________________________________________________________________________//

execution_exception::location::location( char const* file_name, size_t line_num, char const* func )
: m_file_name( file_name ? file_name : "unknown location" )
, m_line_num( line_num )
, m_function( func )
{}

//____________________________________________________________________________//

} // namespace boost

#include <boost/test/detail/enable_warnings.hpp>

#endif // BOOST_TEST_EXECUTION_MONITOR_IPP_012205GER