1 reno_project 2 reno_config ../..;../../../../boost .*\.(cpp|hpp|h)$ 3 reno_layer_map 7 default 4 reno_layer 45 0 5 reno_context 1 CAD6C404CB725D336A44920D2341ECA131149AB02C368B59028F8147F16737BF 2258638601 94 227 0 ../../../../boost/exception/info_tuple.hpp 0 0 <string>boost/exception/info_tuple.hpp</string> exception_error_info_group_hpp 1 2 (:include include:) (:auto also:) 0 6 reno_context 2 55F1164770FD778354E151EF65A3E830DA20F325F7ED20A95130A4B83FC801BF 1282550303 9192 323 17E691632123EB67BA67D590B49EB8094F462F5A10A66A1C5438E1867EF1478E 765399792 77 5917 0 ../../../../boost/exception/exception.hpp 0 0 <string>exception::~exception</string> exception_destructor 1 2 (:include include:) (:auto also:) 0 7 reno_context 1 7116AEECEA666794E31DC99390ADEC1BA6AF74B2398067A0739767B4B76FA97A 4128134227 307 302 0 ../../example/logging.cpp 0 0 <string>diagnostic information</string> tutorial_diagnostic_information 1 2 (:include include:) (:auto also:) 0 8 reno_context 2 55F1164770FD778354E151EF65A3E830DA20F325F7ED20A95130A4B83FC801BF 1282550303 9192 323 65D35B8A2063883A53E9D0DCC3FF8E5CA3573A58451A653CDE3003FFBEC576D3 1693870740 2195 3720 0 ../../../../boost/exception/exception.hpp 0 0 <string>exception</string> 1 2 (:include include:) ---- !!!See Also: (:pagelist link="backlink" except_tags="exception,member" mod="w":) 0 9 reno_context 0 1 <string>Motivation</string> 5 2 (:include include:) (:auto also explicit=" 1 0 10 reno_context 0 1 <string>transporting of arbitrary data to the catch site</string> tutorial_transporting_data 2 1 0 11 reno_context 1 D9B8E6AA12A4F33953B1A961FA590C5A3840234B6531CA8C04AC985AD5800835 2432554768 702 408 0 ../../example/enable_error_info.cpp 0 0 <string>integrating boost exception in existing exception class hierarchies</string> tutorial_enable_error_info 2 ":) 0 12 reno_context 2 808CABE6CCA47C52CC9DD21911BF0B42284A5DD55AC3E665B29ED2B5F16AF7DA 3660693492 8718 615 E23085202D084CBB50F289988A6A592F06D923B77D0AB25D7A98A7188DF5BE3B 1414247481 766 7382 0 ../../../../boost/exception_ptr.hpp 0 0 <string>current_exception</string> 1 2 (:include include:) (:auto also:) 0 13 reno_context 0 1 <string>boost/exception/enable_error_info.hpp</string> exception_enable_error_info_hpp 1 2 (:include include:) (:auto also:) 0 14 reno_context 1 D0024B58523F5885E87F608259810B61D3BE489CEC885FFAE91118F1E43B10A4 399616739 6563 591 0 ../../example/example_io.cpp 0 0 <string>diagnostic_information example</string> 0 0 15 reno_context 2 00067869F918D0E8905D8A464C17FA9DAD9F497B3A172EB360239EEB5778A206 3465219615 4025 518 D31BCE814DF5B8B718E7EB67A194AD08EF716A26D422E436596ABA1F145007D8 4055211476 525 3494 0 ../../../../boost/exception/info.hpp 0 0 <string>exception/operator<<</string> 1 2 (:include include:) (:auto also:) 0 16 reno_context 2 55F1164770FD778354E151EF65A3E830DA20F325F7ED20A95130A4B83FC801BF 1282550303 9192 323 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2978648279 530 433 0 ../../../../boost/exception/detail/error_info_impl.hpp 0 0 <string>error_info</string> 1 2 (:include include:) (:auto also:) 0 20 reno_context 3 126BB1D8971585CBE7D78EF3C12259D72FD5E973A84626AA9FC3234220A11CAB 3471702891 969 344 A7FD310E1340E103081DA2A7899DA0E213C696C84D52C17ADA09F6942EE97D47 2978648279 530 433 02372FA6B987EAC15E78C5A12036F203A92B3D4C857C02985B1BF0A24008D976 2987989218 109 259 0 ../../../../boost/exception/detail/error_info_impl.hpp 0 0 <string>error_info::value</string> 1 2 (:include include:) (:auto also:) 0 21 reno_context 1 4ED9709788BBAB4DE7CF336561606B8C0B41F70877A3395F4EE026F4AEB66CC6 743998427 409 307 0 ../../example/cloning_1.cpp 0 0 <string>using enable_current_exception at the time of the throw</string> using_enable_cloning 0 0 22 reno_context 3 126BB1D8971585CBE7D78EF3C12259D72FD5E973A84626AA9FC3234220A11CAB 3471702891 969 344 A7FD310E1340E103081DA2A7899DA0E213C696C84D52C17ADA09F6942EE97D47 2978648279 530 433 38B566F2C6678B8724D18086A6F76E077DC2ADC1BB69A4B83BF0A2C3B7D31B50 2218658069 31 143 0 ../../../../boost/exception/detail/error_info_impl.hpp 0 0 <string>error_info::value_type</string> 1 2 (:include include:) (:auto also:) 0 23 reno_context 1 187BFD2B78A0DD006717B5B06FFD465E2468F521C32A86FB793F7A68AB5417F3 4276724153 574 382 0 ../../example/error_info_1.cpp 0 0 <string>adding of arbitrary data at the point of the throw</string> adding_data_at_throw 0 0 24 reno_context 1 F4C951B28F7DE500973AA3DFAA99F2BADA6EDAFA2B406C30BEF3B7FBE6FD57D7 2263754923 982 306 0 ../../example/error_info_2.cpp 0 0 <string>adding of arbitrary data to active exception objects</string> adding_data_later 0 0 25 reno_context 2 808CABE6CCA47C52CC9DD21911BF0B42284A5DD55AC3E665B29ED2B5F16AF7DA 3660693492 8718 615 F86EB07D04CD0D0645080D1121DA899746D0C45137E17E1D9BE605E75396F047 1983537541 1346 148 0 ../../../../boost/exception_ptr.hpp 0 0 <string>exception_ptr</string> 1 2 (:include include:) (:auto also:) 0 26 reno_context 1 55F1164770FD778354E151EF65A3E830DA20F325F7ED20A95130A4B83FC801BF 1282550303 9192 323 0 ../../../../boost/exception/exception.hpp 0 0 <string>boost/exception/exception.hpp</string> exception_exception_hpp 1 2 (:include include:) (:auto also:) 0 27 reno_context 0 1 <string>Index</string> name_idx 1 2 (:auto !:) (:pagelist fmt="index" except_tags="index,noindex" mod="w":) 0 28 reno_context 2 3D64A3F5639045A59A0CD362AD4C531ECC763B7C523E284DCBFBACAAF5F681C3 4142572795 1596 462 6FE1F0AF570A010E8FDA1647DE61E0CC3AA979C8A8638722DAACDF8FBC4790D2 1246830037 1023 567 0 ../../../../boost/exception/diagnostic_information.hpp 0 0 <string>diagnostic_information</string> 1 2 (:include include:) (:auto also:) 0 29 reno_context 0 1 <string>transporting of exceptions between threads</string> tutorial_exception_ptr 1 2 (:include include:) (:auto also:) 0 30 reno_context 2 612485E090D76B2CC43C1A296F813075BA165C2496082E78E939F10B3DA8E09A 1770110914 587 1497 60F3F48B87487FA6E0D2CCC0750AF435CC92CEC80BBBF609AC71295031AADD0D 3929437933 361 213 0 ../../../../boost/throw_exception.hpp 0 0 <string>throw_exception</string> 1 2 (:include include:) (:auto also:) 0 31 reno_context 2 00067869F918D0E8905D8A464C17FA9DAD9F497B3A172EB360239EEB5778A206 3465219615 4025 518 6E325144EF4F41FA3A225EB30729101382C4E99B3D6160E307311E4B4E641010 1097215175 161 240 0 ../../../../boost/exception/info.hpp 0 0 <string>error_info::error_info</string> 1 2 (:include include:) (:auto also:) 0 32 reno_context 2 F7633FDCF6615C0199645701EE6E7ACE5CBCD7A7CF6838573791E91ABB3C09F2 1668435395 1332 396 A1F443AF571973A12005D2F7D4AE09A32AAF686FEEAE272EC21512A65EB943E8 3879093659 1300 26 0 ../../../../boost/exception/info_tuple.hpp 0 0 <string>tuple/operator<<</string> 1 2 (:include include:) (:auto also:) 0 33 reno_context 0 1 <string>boost exception</string> boost-exception 121 2 !!Introduction The purpose of Boost Exception is to ease the design of exception class hierarchies and to help write exception handling and error reporting code. It supports transporting of arbitrary data to the catch site, which is otherwise tricky due to the no-throw requirements (15.5.1) for exception types. Data can be added to any exception object, either directly in the throw-expression (15.1), or at a later time as the exception object propagates up the call stack. The ability to add data to exception objects after they have been passed to throw is important, because often some of the information needed to handle an exception is unavailable in the context where the failure is detected. Boost Exception also supports (:link http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2179.html|N2179:)-style (:link 1 0 -29 2 |copying:) of exception objects, implemented non-intrusively and automatically by the boost::(:link 1 0 -30 2 :) function. !!Contents #(:link 1 0 -9 2 :) #Tutorial ##(:link 1 0 -10 2 mod="w":) ##(:link 1 0 -7 2 mod="w":) ##(:link 1 0 -11 2 mod="w":) ##(:link 1 0 -29 2 mod="w":) #Documentation ##Class (:link 1 0 -8 2 :) ##Transporting of Arbitrary Data to the Catch Site ###(:link 1 0 -19 2 :) ###(:link 1 0 -15 2 :) ###(:link 1 0 -32 2 :) ###(:link 1 0 -18 2 :) ###(:link 1 0 34 reno_context 2 55F1164770FD778354E151EF65A3E830DA20F325F7ED20A95130A4B83FC801BF 1282550303 9192 323 F3FB15CD82336271C6E875BC620385322777D16F0B7C233300783CE35710CCBF 3292878997 282 7305 0 ../../../../boost/exception/exception.hpp 0 0 <string>enable_error_info</string> 2 :) ##(:link http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2179.html|N2179:) Transporting of Exceptions between Threads ###(:link 1 0 -25 2 :) ###(:link 1 0 -16 2 :) ###(:link 1 0 -12 2 :) ###(:link 1 0 -17 2 :) ###(:link 1 0 35 reno_context 2 808CABE6CCA47C52CC9DD21911BF0B42284A5DD55AC3E665B29ED2B5F16AF7DA 3660693492 8718 615 0E9DF8366080712A816BE91ABCEF1E2044145B63D75B0B995B537900F378189E 1069696031 255 8457 0 ../../../../boost/exception_ptr.hpp 0 0 <string>rethrow_exception</string> 2 :) ###(:link 1 0 36 reno_context 2 808CABE6CCA47C52CC9DD21911BF0B42284A5DD55AC3E665B29ED2B5F16AF7DA 3660693492 8718 615 DA033132CFA8F85C147C01F51FF7CF7399CF7D32D412F730EA3219CDAC608C72 3830952485 712 1496 0 ../../../../boost/exception_ptr.hpp 0 0 <string>unknown_exception</string> 2 :) ##(:link 1 0 -28 2 :) ##(:link 1 0 -30 2 :), (:link 1 0 37 reno_context 1 17FF6C63843EE64ED66CB038DD95B4C4D6BA1B0FD36B27BEFD84A909161D2853 1237535165 231 1186 0 ../../../../boost/throw_exception.hpp 0 0 <string>BOOST_THROW_EXCEPTION</string> 2 :) ##(:link 1 0 38 reno_context 3 612485E090D76B2CC43C1A296F813075BA165C2496082E78E939F10B3DA8E09A 1770110914 587 1497 60F3F48B87487FA6E0D2CCC0750AF435CC92CEC80BBBF609AC71295031AADD0D 3929437933 361 213 CD1241D84950468704F3C3F04116B8DA5162A8BEA4364F10951232F49113C5DE 1658463867 121 238 0 ../../../../boost/throw_exception.hpp 0 0 <string>configuration macros</string> 2 mod="w":) ##Headers ###(:link 1 0 39 reno_context 1 F647827E95C64B626A8E3751AD4E4D21237DD17482EEA6DB93A16A2C6AC79E87 527078204 446 227 0 ../../../../boost/exception.hpp 0 0 <string>boost/exception.hpp</string> exception_hpp 2 :) ###(:link 1 0 40 reno_context 1 77680088697752BD6CCF429C0B264C866F5BF1D911D3BF3F1F18B06490D9F0CB 2016079400 1841 227 0 ../../../../boost/exception/diagnostic_information.hpp 0 0 <string>boost/exception/diagnostic_information.hpp</string> exception_diagnostic_information_hpp 2 :) ###(:link 1 0 41 reno_context 0 1 <string>boost/exception/enable_current_exception.hpp</string> exception_enable_current_exception_hpp 2 :) ###(:link 1 0 -13 2 :) ###(:link 1 0 42 reno_context 2 9A4ECF9A49A73AED83C1565CB8C67AE1519E8AFE6818F968B4C4733CB9E86CEF 1615599655 68 227 34F0583BC8DE767CE2D79721E1F956895E43E5397473B1050F59BE7E26C773DB 805836816 66 1 0 ../../../../boost/exception/error_info.hpp 0 0 <string>boost/exception/error_info.hpp</string> exception_error_info_value_hpp 2 :) ###(:link 1 0 -26 2 :) ###(:link 1 0 43 reno_context 1 F6C6B72C2CDEBC5E3EAA924F637563A8F8A95684AF6EEF39FE2260C86C77F531 2151348977 3846 323 0 ../../../../boost/exception/get_error_info.hpp 0 0 <string>boost/exception/get_error_info.hpp</string> exception_get_error_info_hpp 2 :) ###(:link 1 0 44 reno_context 1 3D40DD88A1E41D75BC79CA8DACC35BEE2A16A64422AC8E6BE0D61169D9360EF7 4184757263 4220 323 0 ../../../../boost/exception/info.hpp 0 0 <string>boost/exception/info.hpp</string> exception_error_info_hpp 2 :) ###(:link 1 0 -5 2 :) ###(:link 1 0 45 reno_context 1 FBC69CDA5E19FA40270F3855A8B99B2F77572439353F9DC5D15386F3520BC616 1405483403 8882 451 0 ../../../../boost/exception_ptr.hpp 0 0 <string>boost/exception_ptr.hpp</string> exception_cloning_hpp 2 :) ###(:link 1 0 46 reno_context 1 373FAB70D1DAE4F1111AACCCCD3F6B55EAF8D1222E03A26A5A2F860B70D2D0C4 3697768091 2013 91 0 ../../../../boost/throw_exception.hpp 0 0 <string>boost/throw_exception.hpp</string> throw_exception_hpp 2 :) #(:link 1 0 -27 2 :) !!Synopsis `#include <(:link 1 0 -39 2 :)> [@namespace boost { (:include 1 0 -26 2 api pre_indent="4":) (:include 1 0 -44 2 api pre_indent="4":) (:include 1 0 -5 2 api pre_indent="4":) (:include 1 0 -13 2 api pre_indent="4":) (:include 1 0 -40 2 api pre_indent="4":) (:include 1 0 -45 2 api pre_indent="4":) (:include 1 0 -41 2 api pre_indent="4":) }@] `#include <(:link 1 0 -46 2 :)> [@(:include 1 0 -46 2 api:)@] !!Class exception (:include 1 0 -8 2 :) !!Transporting of Arbitrary Data to the Catch Site (:include 1 0 -19 2 :) (:include 1 0 -15 2 :) (:include 1 0 -32 2 :) (:include 1 0 -18 2 :) (:include 1 0 -34 2 :) !!Transporting of Exceptions between Threads (:include 1 0 -25 2 :) (:include 1 0 -16 2 :) (:include 1 0 -12 2 :) (:include 1 0 -17 2 :) (:include 1 0 -35 2 :) (:include 1 0 -36 2 :) !!Printing Diagnostic Information (:include 1 0 -28 2 :) !!Throwing Exceptions (:include 1 0 -30 2 :) (:include 1 0 -37 2 :) !!Acknowledgements Peter Dimov has been continuously influencing the design and evolution of Boost Exception. Also thanks to Tobias Schwinger, Tom Brinkman, Pavel Vozenilek and everyone who participated in the review process. 0 -36 1 2 (:include include:) (:auto also:) 0 -37 1 2 (:include include:) (:pagelist link="backlink":) 0 -11 1 2 (:include include:) (:auto also:) 0 -45 1 2 (:include include:) (:auto also:) 0 -43 1 2 (:include include:) (:auto also:) 0 47 reno_context 1 E444EE9697EEADFDE0767E1D0242FC0E70D98E61FB1F0FFA099648DE509B82F3 94503238 773 374 0 ../../example/info_tuple.cpp 0 0 <string>adding grouped data to exceptions</string> grouping_data 0 0 -46 1 2 (:include include:) (:auto also:) 0 48 reno_context 1 FC684D0DD5A9732B4130F2AB3DB6E0491D0F523E14B7FB738B2019EA2C7F8717 2229778754 631 319 0 ../../example/cloning_2.cpp 0 0 <string>cloning and re-throwing an exception</string> cloning_and_rethrowing 0 0 -41 1 2 (:include include:) (:auto also:) 0 -40 1 2 (:include include:) (:auto also:) 0 49 reno_context 3 55F1164770FD778354E151EF65A3E830DA20F325F7ED20A95130A4B83FC801BF 1282550303 9192 323 65D35B8A2063883A53E9D0DCC3FF8E5CA3573A58451A653CDE3003FFBEC576D3 1693870740 2195 3720 DA154372D8C23BD9EDC30005CA7959CE686D198891097A837D006B5222F04DE9 2768248809 143 60 0 ../../../../boost/exception/exception.hpp 0 0 <string>exception::exception</string> exception_constructors 1 2 (:include include:) (:auto also:) 0 -35 1 2 (:include include:) (:auto also:) 0 -10 1 2 (:include include:) (:auto also:) 0 -44 1 2 (:include include:) (:auto also:) 0 -39 1 2 (:include include:) (:auto also:) 0 -42 1 2 (:include include:) (:auto also:) 0 -38 1 2 (:include include:) (:auto also:) 0 -34 1 2 (:include include:) (:auto also:) def 50 reno_layer 45 0 -5 0 0 -6 0 0 -7 0 0 -8 7 2 [@class (:link 1 0 -8 2 :) { protected: (:include 1 0 -49 2 decl pre_indent="4":) (:include 1 0 -6 2 decl pre_indent="4":) };@] 0 -9 0 0 -12 0 0 -13 0 0 -14 0 0 -15 0 0 -16 0 0 -17 0 0 -18 0 0 -19 9 2 [@template <class Tag,class T> class (:link 1 0 -19 2 :) { public: (:include 1 0 -22 2 decl pre_indent="4":) (:include 1 0 -31 2 decl pre_indent="4":) (:include 1 0 -20 2 decl pre_indent="4":) };@] 0 -20 0 0 -21 0 0 -22 0 0 -23 0 0 -24 0 0 -25 0 0 -26 0 0 -27 0 0 -28 0 0 -29 0 0 -30 0 0 -31 0 0 -32 0 0 -33 0 0 -36 0 0 -37 0 0 -11 0 0 -45 0 0 -43 0 0 -47 0 0 -46 0 0 -48 0 0 -41 0 0 -40 0 0 -49 0 0 -35 0 0 -10 0 0 -44 0 0 -39 0 0 -42 0 0 -38 0 0 -34 0 api 51 reno_layer 45 0 -5 3 2 [@(:include 1 0 -32 2 decl:)@] 0 -6 0 0 -7 0 0 -8 0 0 -9 0 0 -12 0 0 -13 3 2 [@(:include 1 0 -34 2 decl:)@] 0 -14 0 0 -15 0 0 -16 0 0 -17 0 0 -18 0 0 -19 0 0 -20 0 0 -21 0 0 -22 0 0 -23 0 0 -24 0 0 -25 0 0 -26 11 2 [@(:include 1 0 -8 2 def:) (:include 1 0 -19 2 decl:) typedef (:link 1 0 -19 2 :)<struct tag_throw_function,char const *> throw_function; typedef (:link 1 0 -19 2 :)<struct tag_throw_file,char const *> throw_file; typedef (:link 1 0 -19 2 :)<struct tag_throw_line,int> throw_line;@] 0 -27 0 0 -28 0 0 -29 0 0 -30 0 0 -31 0 0 -32 0 0 -33 0 0 -36 0 0 -37 0 0 -11 0 0 -45 11 2 [@(:include 1 0 -36 2 decl:) (:include 1 0 -25 2 decl:) (:include 1 0 -17 2 decl:) (:include 1 0 -12 2 decl:) (:include 1 0 -35 2 decl:)@] 0 -43 3 2 [@(:include 1 0 -18 2 decl:)@] 0 -47 0 0 -46 5 2 [@(:include 1 0 -37 2 decl:) namespace boost { (:include 1 0 -30 2 decl:) }@] 0 -48 0 0 -41 3 2 [@(:include 1 0 -16 2 decl:)@] 0 -40 3 2 [@(:include 1 0 -28 2 decl:)@] 0 -49 0 0 -35 0 0 -10 0 0 -44 5 2 [@(:include 1 0 -19 2 def:) (:include 1 0 -15 2 decl:)@] 0 -39 15 2 [@#include <(:link 1 0 -40 2 :)> #include <(:link 1 0 -42 2 :)> #include <(:link 1 0 -26 2 :)> #include <(:link 1 0 -43 2 :)> #include <(:link 1 0 -44 2 :)> #include <(:link 1 0 -5 2 :)> #include <(:link 1 0 -45 2 :)>@] 0 -42 3 2 [@(:include 1 0 -19 2 decl:)@] 0 -38 0 0 -34 0 decl 52 reno_layer 45 0 -5 0 0 -6 3 2 [@(:link 1 0 -6 2 mod="m":)();@] 0 -7 0 0 -8 3 2 [@class (:link 1 0 -8 2 :);@] 0 -9 0 0 -12 5 2 [@(:link 1 0 -25 2 :) (:link 1 0 -12 2 :)();@] 0 -13 0 0 -14 0 0 -15 5 2 [@template <class E, class Tag, class T> E const & (:link 1 0 -15 2 mod="/":)( E const & x, (:link 1 0 -19 2 :)<Tag,T> const & v );@] 0 -16 3 2 [@template <class T> ---unspecified--- (:link 1 0 -16 2 :)( T const & e );@] 0 -17 5 2 [@template <class T> (:link 1 0 -25 2 :) (:link 1 0 -17 2 :)( T const & e );@] 0 -18 3 2 [@template <class ErrorInfo,class E> (:link http://www.boost.org/libs/smart_ptr/shared_ptr.htm|shared_ptr:)<typename ErrorInfo::value_type const> (:link 1 0 -18 2 :)( E const & x );@] 0 -19 3 2 [@template <class Tag,class T> class (:link 1 0 -19 2 :);@] 0 -20 5 2 [@(:link 1 0 -22 2 mod="m":) const & (:link 1 0 -20 2 mod="m":)() const;@] 0 -21 0 0 -22 3 2 [@typedef T (:link 1 0 -22 2 mod="m":);@] 0 -23 0 0 -24 0 0 -25 3 2 [@typedef ---unspecified--- (:link 1 0 -25 2 :);@] 0 -26 0 0 -27 0 0 -28 5 2 [@std::string (:link 1 0 -28 2 :)( boost::(:link 1 0 -8 2 :) const & );@] 0 -29 0 0 -30 5 2 [@#ifdef BOOST_NO_EXCEPTIONS void (:link 1 0 -30 2 :)( std::exception const & e ); // user defined #else template <class E> void (:link 1 0 -30 2 :)( E const & e ); #endif@] 0 -31 5 2 [@(:link 1 0 -31 2 mod="m":)( (:link 1 0 -22 2 mod="m":) const & v );@] 0 -32 7 2 [@template <class E, class Tag1, class T1, ..., class TagN, class TN> E const & (:link 1 0 -32 2 mod="/":)( E const & x, (:link http://www.boost.org/libs/tuple/doc/tuple_users_guide.html|tuple:)< (:link 1 0 -19 2 :)<Tag1,T1>, ..., (:link 1 0 -19 2 :)<TagN,TN> > const & v );@] 0 -33 0 0 -36 5 2 [@class (:link 1 0 -36 2 :): public std::exception public boost:: 1 0 -8 2 { ---unspecified--- };@] 0 -37 19 2 [@#if !defined( BOOST_NO_EXCEPTIONS ) && !defined( BOOST_EXCEPTION_DISABLE ) #include < 1 0 -26 2 > #include <boost/current_function.hpp> #define 1 0 -37 2 (x)\ ::boost:: 1 0 -30 2 ( ::boost:: 1 0 -34 2 (x) <<\ ::boost::(:link 1 0 -26 2 |throw_function:)(BOOST_CURRENT_FUNCTION) <<\ ::boost::(:link 1 0 -26 2 |throw_file:)(__FILE__) <<\ ::boost::(:link 1 0 -26 2 |throw_line:)((int)__LINE__) ) #else #define 1 0 -37 2 (x) ::boost:: 1 0 -30 2 (x) #endif@] 0 -11 0 0 -45 0 0 -43 0 0 -47 0 0 -46 0 0 -48 0 0 -41 0 0 -40 0 0 -49 7 2 [@(:link 1 0 -49 2 mod="m":)(); (:link 1 0 -49 2 mod="m":)( (:link 1 0 -8 2 :) const & x );@] 0 -35 5 2 [@void (:link 1 0 -35 2 :)( (:link 1 0 -25 2 :) const & ep ); 0 -10 0 0 -44 0 0 -39 0 0 -42 0 0 -38 0 0 -34 3 2 [@template <class T> ---unspecified--- (:link 1 0 -34 2 :)( T const & x );@] include 53 reno_layer 45 0 -5 1 2 (:auto !!:) !!!Synopsis (:include synopsis:) 0 -6 3 2 (:auto !!!:) (:include decl:) !!!!Effects: Frees all resources associated with a boost::(:link 1 0 -8 2 :) object. !!!!Throws: Nothing. 0 -7 19 2 (:auto !!:) Boost Exception provides a namespace-scope function (:link 1 0 -28 2 :) which takes a boost::(:link 1 0 -8 2 :). The returned string contains: *the string representation of all data objects added to the boost::(:link 1 0 -8 2 :) through (:link 1 0 -15 2 mod="/":); *the output from std::exception::what; *additional platform-specific diagnostic information. The returned string is not presentable as a friendly user message, but because it is generated automatically, it is useful for debugging or logging purposes. Here is an example: [@#include <(:link 1 0 -39 2 :)> #include <iostream> void f(); //throws unknown types that derive from boost::(:link 1 0 -8 2 :). void g() { try { f(); } catch( boost::(:link 1 0 -8 2 :) & e ) { std::cerr << (:link 1 0 -28 2 :)(e); } }@] (:include 1 0 -14 2 :) 0 -8 13 2 (:auto !!!:) (:include synopsis:) Class boost::(:link 1 0 -8 2 :) is designed to be used as a universal base for user-defined exception types. An object of any type deriving from boost::(:link 1 0 -8 2 :) can store data of arbitrary types, using the (:link 1 0 -19 2 :) wrapper and (:link 1 0 -15 2 mod="/":). To retrieve data from a boost::(:link 1 0 -8 2 :) object, use the (:link 1 0 -18 2 :) function template. 0 -9 31 2 (:auto !!!:) Traditionally, when using exceptions to report failures, the throw site: *creates an exception object of appropriate type, and *stuffs it with data relevant to the detected error. A higher context contains a catch statement which: *selects failures based on exception types, and *inspects exception objects for data required to deal with the problem. The main issue with this "traditional" approach is that often, the data available at the point of the throw is insufficient to handle the failure at the catch site. Here is an example of a catch statement: [@catch( file_read_error & e ) { std::cerr << e.file_name(); }@] And here is a possible matching throw: [@void read_file( FILE * f ) { .... size_t nr=fread(buf,1,count,f); if( ferror(f) ) throw file_read_error(???); .... }@] Clearly, the problem is that the handler requires a file name but the read_file function does not have a file name to put in the exception object; all it has is a FILE pointer! In an attempt to deal with this problem, we could modify read_file to accept a file name: [@void read_file( FILE * f, char const * name ) { .... size_t nr=fread(buf,1,count,f); if( ferror(f) ) throw file_read_error(name); .... }@] This is not a real solution: it simply shifts the burden of supplying a file name to the immediate caller of the read_file function. ->''In general, the data required to handle a given library-emitted exception depends on the program that links to it. Many contexts between the throw and the catch may have relevant information which must be transported to the exception handler.'' !!!Exception wrapping The idea of exception wrapping is to catch an exception from a lower level function (such as the read_file function above), and throw a new exception object that contains the original exception (and also carries a file name.) This method seems to be particularly popular with C++ programmers with Java background. Exception wrapping leads to the following problems: #To wrap an exception object it must be copied, which may result in slicing. #Wrapping is practically impossible to use in generic contexts. The second point is actually a special case of violating the exception neutrality principle. Most contexts in a program can not handle exceptions; such contexts should not interfere with the process of exception handling. !!!The Boost way *Simply derive your exception types from boos:: 1 0 -8 2 . *Confidently limit the throw site to provide only data that is available naturally. *Use exception-neutral contexts between the throw and the catch to augment exceptions with more relevant data as they bubble up. In the throw statement below, we only add the errno code, since this is the only failure-relevant information available in this context: [@struct exception_base: virtual std::exception, virtual boost:: 1 0 -8 2 { }; struct file_read_error: virtual exception_base { }; typedef boost:: 1 0 -19 2 <struct tag_errno_code,int> errno_code; void read_file( FILE * f ) { .... size_t nr=fread(buf,1,count,f); if( ferror(f) ) throw file_read_error() (:link 1 0 -15 2 |<<:) errno_code(errno); .... }@] In a higher exception-neutral context, we add the file name: [@typedef boost:: 1 0 -19 2 <struct tag_file_name,std::string> file_name; .... try { if( FILE * fp=fopen(“foo.txt”,”rt”) ) { shared_ptr<FILE> f(fp,fclose); .... read_file(fp); //throws types deriving from boost:: 1 0 -8 2 do_something(); .... } else throw file_open_error() (:link 1 0 -15 2 |<<:) errno_code(errno); } catch( boost:: 1 0 -8 2 & e ) { e (:link 1 0 -15 2 |<<:) file_name(“foo.txt”); throw; }@] And here is how the handler retreives data from exceptions that derive from boost:: 1 0 -8 2 : [@catch( io_error & e ) { std::cerr << “I/O Error!\n”; if( shared_ptr<std::string const> fn= 1 0 -18 2 <file_name>(e) ) std::cerr << “File name: “ << *fn << “\n”; if( shared_ptr<int const> c= 1 0 -18 2 <errno_code>(e) ) std::cerr << “OS says: “ << strerror(*c) << “\n”; }@] !!!Exception types as simple semantic tags Deriving from boost:: 1 0 -8 2 effectively decouples the semantics of a failure from the information that is relevant to each individual instance of reporting a failure with a given semantic. In other words: with boost:: 1 0 -8 2 , what data a given exception object transports depends primarily on the context in which failures are reported (not on its type). Since exception types need no members, it becomes very natural to throw exceptions that derive from more than one type to indicate multiple appropriate semantics: [@struct exception_base: virtual std::exception, virtual boost:: 1 0 -8 2 { }; struct io_error: virtual exception_base { }; struct file_error: virtual io_error { }; struct read_error: virtual io_error { }; struct file_read_error: virtual file_error, virtual read_error { };@] 0 -12 29 2 (:auto !!!:) (:include synopsis:) !!!!Requirements: The (:link 1 0 -12 2 :) function must not be called outside of a catch block. !!!!Returns: * An (:link 1 0 -25 2 :) that refers to the currently handled exception or a copy of the currently handled exception. * If the function needs to allocate memory and the attempt fails, it returns an (:link 1 0 -25 2 :) that refers to an instance of std::bad_alloc. !!!!Throws: Nothing. !!!!Notes: * It is unspecified whether the return values of two successive calls to (:link 1 0 -12 2 :) refer to the same exception object. * Correct implementation of (:link 1 0 -12 2 :) may require compiler support, unless (:link 1 0 -16 2 :) was used at the time the currently handled exception object was passed to throw. If (:link 1 0 -16 2 :) was not used, and if the compiler does not provide the necessary support, then (:link 1 0 -12 2 :) may return an (:link 1 0 -25 2 :) that refers to an instance of (:link 1 0 -36 2 :). In this case, if the original exception object derives from boost::(:link 1 0 -8 2 :), then the boost::(:link 1 0 -8 2 :) sub-object of the (:link 1 0 -36 2 :) object is initialized by the boost::(:link 1 0 -8 2 :) copy constructor. 0 -13 1 2 (:auto !!!:) !!!Synopsis (:include synopsis:) 0 -14 3 2 !!!!Example: this is a possible output from the (:link 1 0 -28 2 :) function, as used in ''libs/exception/example/example_io.cpp:'' [@libs\exception\example\example_io.cpp(83): Throw in function class boost::shared_ptr<struct _iobuf> __cdecl my_fopen(const char *,const char *) Dynamic exception type: class boost::exception_detail::clone_impl<class fopen_error> std::exception::what: example_io error [struct tag_errno *] = 2, OS says "No such file or directory" [struct tag_file_name *] = tmp1.txt [struct tag_function *] = fopen [struct tag_open_mode *] = rb@] 0 -15 7 2 (:auto !!!:) (:include synopsis:) !!!!Requirements: E must be boost::(:link 1 0 -8 2 :), or a type that derives (indirectly) from boost::(:link 1 0 -8 2 :). !!!!Effects: Stores a copy of v into x. If x already contains data of type (:link 1 0 -19 2 :)<Tag,T>, that data is overwritten. !!!!Returns: x. (:include throws:) 0 -16 21 2 (:auto !!!:) (:include synopsis:) !!!!Requirements: T must be a class with an accessible no-throw copy constructor. !!!!Returns: An object of ''unspecified'' type which derives publicly from T. That is, the returned object can be intercepted by a catch(T &). !!!!Description: This function is designed to be used directly in a throw-expression to enable the (:link 1 0 -25 2 :) support in Boost Exception. For example: [@class my_exception: public std::exception { }; .... throw boost::(:link 1 0 -16 2 :)(my_exception());@] Unless (:link 1 0 -16 2 :) is called at the time an exception object is used in a throw-expression, an attempt to copy it using (:link 1 0 -12 2 :) may return an (:link 1 0 -25 2 :) which refers to an instance of (:link 1 0 -36 2 :). See (:link 1 0 -12 2 :) for details. !!!!Note: Instead of using the throw keyword directly, it is preferable to call boost::(:link 1 0 -30 2 :). This is guaranteed to throw an exception that derives from boost::(:link 1 0 -8 2 :) and supports the (:link 1 0 -25 2 :) functionality. 0 -17 5 2 (:auto !!!:) (:include synopsis:) !!!!Effects: As if [@try { throw 1 0 -16 2 (e); } catch(...) { return (:link 1 0 -12 2 :)(); }@] 0 -18 13 2 (:auto !!!:) (:include synopsis:) !!!!Requirements: * ErrorInfo must be an instance of the (:link 1 0 -19 2 :) template. * E must be polymorphic. * The (:link 1 0 -18 2 :) function must not be called outside of a catch block. !!!!Returns: * If dynamic_cast<boost::(:link 1 0 -8 2 :) const *>(&x) is 0, or if x does not store an object of type ErrorInfo, the returned value is an empty shared_ptr. * Otherwise, the returned shared_ptr points to the stored value (use (:link 1 0 -15 2 mod="/":) to store values in exception objects.) The shared_ptr is valid even after x has been destroyed. !!!!Throws: Nothing. !!!!Note: The interface of (:link 1 0 -18 2 :) may be affected by the build (:link 1 0 -38 2 :). 0 -19 25 2 (:auto !!!:) (:include synopsis:) !!!!Requirements: T must have accessible copy constructor and must not be a reference (there is no requirement that T's copy constructor does not throw.) !!!!Description: This class template is used to associate a Tag type with a value type T. Objects of type (:link 1 0 -19 2 :)<Tag,T> can be passed to (:link 1 0 -15 2 mod="/":) to be stored in objects of type boost::(:link 1 0 -8 2 :). !!!!Note: The header <(:link 1 0 -42 2 :)> provides a declaration of the (:link 1 0 -19 2 :) template, which is sufficient for the purpose of typedefing an instance for specific Tag and T, like this: [@#include <(:link 1 0 -42 2 :)> typedef boost::(:link 1 0 -19 2 :)<struct tag_errno,int> errno_info;@] Of course, to actually add an (:link 1 0 -19 2 :) object to (:link 1 0 -8 2 mod="p":) using (:link 1 0 -15 2 mod="/":), or to retrieve it using (:link 1 0 -18 2 :), you must first #include <(:link 1 0 -44 2 :)>. 0 -20 5 2 (:auto !!!:) (:include synopsis:) !!!!Description: Returns a const reference to the copy of the value passed to (:link 1 0 -19 2 :)'s constructor stored in the (:link 1 0 -19 2 :) object. !!!!Throws: Nothing. 0 -21 11 2 (:auto !!!:) Here is how cloning can be enabled in a throw-expression (15.1): [@#include <(:link 1 0 -44 2 :)> #include <stdio.h> #include <errno.h> typedef boost::error_info<struct tag_errno,int> errno_info; class file_read_error: public boost::(:link 1 0 -8 2 :) { }; void file_read( FILE * f, void * buffer, size_t size ) { if( size!=fread(buffer,1,size,f) ) throw boost::(:link 1 0 -16 2 :)(file_read_error()) << errno_info(errno); }@] Of course, (:link 1 0 -16 2 :) may be used with any exception type; there is no requirement that it should derive from boost::(:link 1 0 -8 2 :). 0 -22 5 2 (:auto !!!:) (:include synopsis:) !!!!Definition: The expression 1 0 -19 2 <Tag,T>::(:link 1 0 -22 2 mod="m":) evaluates to T. 0 -23 17 2 (:auto !!!:) The following example demonstrates how errno can be stored in exception objects using Boost Exception: [@#include <(:link 1 0 -39 2 :)> #include <errno.h> #include <iostream> typedef boost::(:link 1 0 -19 2 :)<struct tag_errno,int> errno_info; //(1) class my_error: public boost::(:link 1 0 -8 2 :), public std::exception { }; //(2) void f() { throw my_error() << errno_info(errno); //(3) } @] First, we instantiate the (:link 1 0 -19 2 :) template using a unique identifier -- tag_errno, and the type of the info it identifies -- int. This provides compile-time type safety for the various values stored in exception objects. Second, we define class my_error, which derives from boost::(:link 1 0 -8 2 :). Finally, (3) illustrates how the typedef from (1) can be used with (:link 1 0 -15 2 |operator<<:) to store values in exception objects at the point of the throw. The stored errno value can be recovered at a later time like this: [@// ...continued void g() { try { f(); } catch( my_error & x ) { if( boost::shared_ptr<int const> err=boost::(:link 1 0 -18 2 :)<errno_info>(x) ) std::cerr << "Error code: " << *err; } }@] The (:link 1 0 -18 2 :) function template is instantiated with the typedef from (1), and is passed an exception object of a polymorphic type. If the exception object contains the requested value, the returned (:link http://www.boost.org/libs/smart_ptr/shared_ptr.htm|shared_ptr:) will point to it; otherwise an empty (:link http://www.boost.org/libs/smart_ptr/shared_ptr.htm|shared_ptr:) is returned. 0 -24 19 2 (:auto !!!:) Sometimes the throw site does not have all the information that is needed at the catch site to make sense of what went wrong. Let's say we have an exception type file_read_error, which takes a file name in its constructor. Consider the following function: [@void file_read( FILE * f, void * buffer, size_t size ) { if( size!=fread(buffer,1,size,f) ) throw file_read_error(????); }@] How can the file_read function pass a file name to the exception type constructor? All it has is a FILE handle. Using boost:: 1 0 -8 2 allows us to free the file_read function from the burden of storing the file name in exceptions it throws: [@#include <(:link 1 0 -39 2 :)> #include <stdio.h> #include <errno.h> typedef boost::(:link 1 0 -19 2 :)<struct tag_errno,int> errno_info; class file_read_error: public boost::(:link 1 0 -8 2 :) { }; void file_read( FILE * f, void * buffer, size_t size ) { if( size!=fread(buffer,1,size,f) ) throw file_read_error() << errno_info(errno); }@] If file_read detects a failure, it throws an exception which contains the information that is available at the time, namely the errno. Other relevant information, such as the file name, can be added in a context higher up the call stack, where it is known naturally: [@#include <(:link 1 0 -39 2 :)> #include <boost/shared_ptr.hpp> #include <stdio.h> #include <string> typedef boost::(:link 1 0 -19 2 :)<struct tag_file_name,std::string> file_name_info; boost::shared_ptr<FILE> file_open( char const * file_name, char const * mode ); void file_read( FILE * f, void * buffer, size_t size ); void parse_file( char const * file_name ) { boost::shared_ptr<FILE> f = file_open(file_name,"rb"); assert(f); try { char buf[1024]; file_read( f.get(), buf, sizeof(buf) ); } catch( boost::(:link 1 0 -8 2 :) & e ) { e << file_name_info(file_name); throw; } }@] The above function is (almost) exception-neutral -- if an exception is emitted by any function call within the try block, parse_file does not need to do any real work, but it intercepts any boost::(:link 1 0 -8 2 :) object, stores the file name, and re-throws using a throw-expression with no operand (15.1.6). The rationale for catching any boost::(:link 1 0 -8 2 :) object is that the file name is relevant to any failure that occurs in parse_file, ''even if the failure is unrelated to file I/O''. 0 -25 17 2 (:auto !!!:) (:include synopsis:) The (:link 1 0 -25 2 :) type can be used to refer to a copy of an exception object. It is Default Constructible, Copy Constructible, Assignable and Equality Comparable; (:link 1 0 -25 2 :)'s operations do not throw. Two instances of (:link 1 0 -25 2 :) are equivalent and compare equal if and only if they refer to the same exception. The default constructor of (:link 1 0 -25 2 :) produces the null value of the type. The null value is equivalent only to itself. !!!!Thread safety * It is legal for multiple threads to hold (:link 1 0 -25 2 :) references to the same exception object. * It is illegal for multiple threads to modify the same (:link 1 0 -25 2 :) object concurrently. * While calling (:link 1 0 -12 2 :) makes a copy of the current exception object, it is still possible for the two copies to share internal state. Therefore, in general it is not safe to call (:link 1 0 -35 2 :) concurrently to throw the same exception object into multiple threads. 0 -26 1 2 (:auto !!:) !!!Synopsis (:include synopsis:) 0 -27 0 0 -28 23 2 (:auto !!!:) (:include synopsis:) !!!!Returns: This function returns a string value that is automatically composed from the string representations of all (:link 1 0 -19 2 :) objects stored in a boost::(:link 1 0 -8 2 :) through (:link 1 0 -15 2 mod="/":), along with other diagnostic information relevant to the exception. The string representation of each (:link 1 0 -19 2 :) object is deduced by a function call that is bound at the time the (:link 1 0 -19 2 :)<Tag,T> template is instantiated. The following overload resolutions are attempted in order: #Unqualified call to to_string(x), where x is of type (:link 1 0 -19 2 :)<Tag,T> (the return value is expected to be of type std::string.) #Unqualified call to to_string(x.(:link 1 0 -20 2 mod="m":)()) (the return value is expected to be of type std::string.) #Unqualified call to s << x.(:link 1 0 -20 2 mod="m":)(), where s is a std::ostringstream. The first successfully bound function is used at the time (:link 1 0 -28 2 :) is called; if all 3 overload resolutions are unsuccessful, the system is unable to convert the (:link 1 0 -19 2 :) object to string, and ''an unspecified stub string value is used without issuing a compile error.'' !!!!Notes: *The format of the returned string is unspecified. *The returned string is ''not'' user-friendly. *If dynamic_cast<std::exception const *>(&x) is not null, the returned string includes the output from std::exception::what. *The returned string may include additional platform-specific diagnostic information. (:include 1 0 -14 2 :) 0 -29 11 2 (:auto !!:) Boost Exception supports transporting of exception objects between threads through cloning. This system is similar to (:link http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2179.html|N2179:), but because Boost Exception can not rely on language support, the use of (:link 1 0 -16 2 :) at the time of the throw is required in order to use cloning. !!!!Note: All exceptions emitted by the familiar function boost::(:link 1 0 -30 2 :) are guaranteed to derive from boost::(:link 1 0 -8 2 :) and to support cloning. (:include 1 0 -21 2 :) (:include 1 0 -48 2 :) 0 -30 13 2 (:auto !!!:) (:include synopsis:) !!!!Requirements: E must derive publicly from std::exception. !!!!Effects: * If BOOST_NO_EXCEPTIONS is not defined, boost::(:link 1 0 -30 2 :)(e) is equivalent to throw boost::(:link 1 0 -16 2 :)(boost::(:link 1 0 -34 2 :)(e)), unless BOOST_EXCEPTION_DISABLE is defined, in which case boost::(:link 1 0 -30 2 :)(e) is equivalent to throw e; * If BOOST_NO_EXCEPTIONS is defined, the function is left undefined, and the user is expected to supply an appropriate definition. Callers of (:link 1 0 -30 2 :) are allowed to assume that the function never returns; therefore, if the user-defined (:link 1 0 -30 2 :) returns, the behavior is undefined. 0 -31 3 2 (:auto !!!:) (:include synopsis:) !!!!Effects: Stores a copy of v in the 1 0 -19 2 object. (:include throws:) 0 -32 5 2 (:auto !!!:) (:include synopsis:) !!!!Requirements: E must be boost::(:link 1 0 -8 2 :), or a type that derives (indirectly) from boost::(:link 1 0 -8 2 :). !!!!Effects: Equivalent to x << v.(:link http://www.boost.org/libs/tuple/doc/tuple_users_guide.html#accessing_elements|get:)<0>() << ... << v.(:link http://www.boost.org/libs/tuple/doc/tuple_users_guide.html#accessing_elements|get:)<N>(). !!!!Returns: x. (:include throws:) 0 -33 0 0 -36 5 2 (:auto !!!:) (:include synopsis:) This type is used by the (:link 1 0 -25 2 :) support in Boost Exception. Please see (:link 1 0 -12 2 :). 0 -37 7 2 (:auto !!!:) (:include synopsis:) This macro takes an exception object, records BOOST_CURRENT_FUNCTION, __FILE__ and __LINE__ in it, and forwards it to 1 0 -30 2 . To recover this information at the catch site, use 1 0 -18 2 ; the information is also included in the message returned by 1 0 -28 2 . 0 -11 27 2 (:auto !!:) Some exception hierarchies can not be modified to make boost::(:link 1 0 -8 2 :) a base type. In this case, the (:link 1 0 -34 2 :) function template can be used to make exception objects derive from boost::(:link 1 0 -8 2 :) anyway. Here is an example: [@#include <(:link 1 0 -39 2 :)> #include <stdexcept> typedef boost::(:link 1 0 -19 2 :)<struct tag_std_range_min,size_t> std_range_min; typedef boost::(:link 1 0 -19 2 :)<struct tag_std_range_max,size_t> std_range_max; typedef boost::(:link 1 0 -19 2 :)<struct tag_std_range_index,size_t> std_range_index; template <class T> class my_container { public: size_t size() const; T const & operator[]( size_t i ) const { if( i > size() ) throw boost::(:link 1 0 -34 2 :)(std::range_error("Index out of range")) << std_range_min(0) << std_range_max(size()) << std_range_index(i); //.... } }; @] The call to (:link 1 0 -34 2 :)<T> gets us an object of ''unspecified type'' which is guaranteed to derive from both boost::(:link 1 0 -8 2 :) and T. This makes it possible to use (:link 1 0 -15 2 mod="/":) to store additional information in the exception object. The exception can be intercepted as T &, so existing exception handling will not break. It can also be intercepted as boost::(:link 1 0 -8 2 :) &, so that (:link 1 0 -10 2 |more information can be added to the exception at a later time:). 0 -45 1 2 (:auto !!:) !!!Synopsis (:include synopsis:) 0 -43 1 2 (:auto !!:) !!!Synopsis (:include synopsis:) 0 -47 13 2 (:auto !!!:) The code snippet below demonstrates how boost::(:link http://www.boost.org/libs/tuple/doc/tuple_users_guide.html|tuple:) can be used to bundle the name of the function that failed, together with the reported errno so that they can be added to exception objects more conveniently together: [@#include <(:link 1 0 -5 2 :)> #include <boost/shared_ptr.hpp> #include <stdio.h> #include <string> #include <errno.h> typedef boost::(:link 1 0 -19 2 :)<struct tag_file_name,std::string> file_name_info; typedef boost::(:link 1 0 -19 2 :)<struct tag_function,char const *> function_info; typedef boost::(:link 1 0 -19 2 :)<struct tag_errno,int> errno_info; typedef boost::tuple<function_info,errno_info> clib_failure; class file_open_error: public boost::(:link 1 0 -8 2 :) { }; boost::shared_ptr<FILE> file_open( char const * name, char const * mode ) { if( FILE * f=fopen(name,mode) ) return boost::shared_ptr<FILE>(f,fclose); else throw file_open_error() << file_name_info(name) << clib_failure("fopen",errno); }@] Note that the members of a boost::(:link http://www.boost.org/libs/tuple/doc/tuple_users_guide.html|tuple:) are stored separately in exception objects; they can only be retrieved individually, using (:link 1 0 -18 2 :). 0 -46 1 2 (:auto !!:) !!!Synopsis (:include synopsis:) 0 -48 37 2 (:auto !!!:) When you catch an exception, you can call (:link 1 0 -12 2 :) to get an (:link 1 0 -25 2 :) object: [@#include <(:link 1 0 -45 2 :)> #include <boost/thread.hpp> #include <boost/bind.hpp> void do_work(); //throws cloning-enabled boost::(:link 1 0 -8 2 :)s void worker_thread( boost::(:link 1 0 -25 2 :) & error ) { try { do_work(); error = boost::(:link 1 0 -25 2 :)(); } catch( ... ) { error = boost::(:link 1 0 -12 2 :)(); } }@] In the above example, note that (:link 1 0 -12 2 :) captures the original type of the exception object. The exception can be thrown again using the (:link 1 0 -35 2 :) function: [@// ...continued void work() { boost::(:link 1 0 -25 2 :) error; boost::(:link http://www.boost.org/doc/html/boost/thread.html|thread:) t( boost::(:link http://www.boost.org/libs/bind/bind.html|bind:)(worker_thread,boost::(:link http://www.boost.org/doc/html/ref.html|ref:)(error)) ); t.(:link http://www.boost.org/doc/html/boost/thread.html|join:)(); if( error ) boost::(:link 1 0 -35 2 :)(error); }@] Note that (:link 1 0 -12 2 :) could fail to copy the original exception object in the following cases: * if there is not enough memory, in which case the returned (:link 1 0 -25 2 :) points to an instance of std::bad_alloc, or * if (:link 1 0 -16 2 :) was not used in the throw-expression passed to the original throw statement and the current implementation does not have the necessary compiler-specific support to copy the exception automatically, in which case the returned (:link 1 0 -25 2 :) points to an instance of (:link 1 0 -36 2 :). Regardless, the use of (:link 1 0 -12 2 :) and (:link 1 0 -35 2 :) in the above examples is well-formed. 0 -41 1 2 (:auto !!!:) !!!Synopsis (:include synopsis:) 0 -40 1 2 (:auto !!:) !!!Synopsis (:include synopsis:) 0 -49 7 2 (:auto !!!:) (:include decl:) !!!!Effects: * Default constructor: initializes an empty boost::(:link 1 0 -8 2 :) object. * Copy constructor: initializes a boost::(:link 1 0 -8 2 :) object which shares ownership with x of all data added through (:link 1 0 -15 2 mod="/":), including data that is added at a future time. !!!!Throws: Nothing. 0 -35 1 2 (:auto !!!:) (:include synopsis:) !!!!Precondition: ep shall not be null. !!!!Throws: The exception to which ep refers. 0 -10 11 2 (:auto !!:) All exception types that derive from boost::(:link 1 0 -8 2 :) can be used as type-safe containers of arbitrary data objects, while complying with the no-throw requirements (15.5.1) of the ANSI C++ standard for exception types. Data can be added to a boost::(:link 1 0 -8 2 :) at the time of the throw, or at a later time. (:include 1 0 -23 2 :) (:include 1 0 -24 2 :) (:include 1 0 -47 2 :) 0 -44 1 2 (:auto !!:) !!!Synopsis (:include synopsis:) 0 -39 1 2 (:auto !!:) !!!Synopsis (:include synopsis:) 0 -42 1 2 (:auto !!:) !!!Synopsis (:include synopsis:) 0 -38 15 2 (:auto !!!:) Boost Exception responds to the following configuration macros: '''BOOST_NO_RTTI'''\\ '''BOOST_NO_TYPEID''' The first macro prevents Boost Exception from using dynamic_cast and dynamic typeid. If the second macro is also defined, Boost Exception does not use static typeid either. There are no observable degrading effects on the library functionality, except for the following: ->By default, the (:link 1 0 -18 2 :) function template can be called with any exception type. If BOOST_NO_RTTI is defined, (:link 1 0 -18 2 :) can be used only with objects of type boost::(:link 1 0 -8 2 :). '''BOOST_EXCEPTION_DISABLE''' By default, (:link 1 0 -16 2 :) and (:link 1 0 -34 2 :) are integrated directly in the (:link 1 0 -30 2 :) function. Defining BOOST_EXCEPTION_DISABLE disables this integration. Note that on some non-conformant compilers, for example MSVC 7.0 and older, as well as BCC, BOOST_EXCEPTION_DISABLE is implicitly defined in (:link 1 0 -46 2 :). 0 -34 5 2 (:auto !!!:) (:include synopsis:) !!!!Requirements: T must be a class with an accessible no-throw copy constructor as per (15.5.1). !!!!Returns: * If T derives from boost::(:link 1 0 -8 2 :), the returned object is of type T and is a copy of x. * Otherwise, the returned object is of an unspecified type that derives publicly from both T and boost::(:link 1 0 -8 2 :). The T sub-object is initialized from x by the T copy constructor. !!!!Throws: Nothing. throws 54 reno_layer 45 0 -5 0 0 -6 0 0 -7 0 0 -8 0 0 -9 0 0 -12 0 0 -13 0 0 -14 0 0 -15 1 2 !!!!Throws: std::bad_alloc, or any exception emitted by the T copy constructor. 0 -16 0 0 -17 0 0 -18 0 0 -19 0 0 -20 0 0 -21 0 0 -22 0 0 -23 0 0 -24 0 0 -25 0 0 -26 0 0 -27 0 0 -28 0 0 -29 0 0 -30 0 0 -31 1 2 !!!!Throws: Any exception emitted by v's copy constructor. 0 -32 1 2 !!!!Throws: std::bad_alloc, or any exception emitted by T1..TN copy constructor. 0 -33 0 0 -36 0 0 -37 0 0 -11 0 0 -45 0 0 -43 0 0 -47 0 0 -46 0 0 -48 0 0 -41 0 0 -40 0 0 -49 0 0 -35 0 0 -10 0 0 -44 0 0 -39 0 0 -42 0 0 -38 0 0 -34 0 synopsis 55 reno_layer 45 0 -5 1 2 [@#include <boost/tuple/tuple.hpp> namespace boost { (:include api pre_indent="4":) }@] 0 -6 0 0 -7 0 0 -8 3 2 `#include <(:link 1 0 -26 2 :)> [@namespace boost { (:include def pre_indent="4":) }@] 0 -9 0 0 -12 3 2 `#include <(:link 1 0 -45 2 :)> [@namespace boost { (:include decl pre_indent="4":) }@] 0 -13 3 2 [@#include < 1 0 -26 2 > namespace boost { (:include api pre_indent="4":) }@] 0 -14 0 0 -15 3 2 `#include <(:link 1 0 -44 2 :)>\\ [@namespace boost { (:include decl pre_indent="4":) }@] 0 -16 3 2 `#include < 1 0 -41 2 > [@namespace boost { (:include decl pre_indent="4":) }@] 0 -17 3 2 `#include <(:link 1 0 -45 2 :)> [@namespace boost { (:include decl pre_indent="4":) }@] 0 -18 3 2 `#include < 1 0 -43 2 > [@namespace boost { (:include decl pre_indent="4":) }@] 0 -19 3 2 `#include <(:link 1 0 -44 2 :)> [@namespace boost { (:include def pre_indent="4":) }@] 0 -20 3 2 `#include <(:link 1 0 -44 2 :)> [@(:include decl:)@] 0 -21 0 0 -22 3 2 `#include <(:link 1 0 -44 2 :)> [@(:include decl:)@] 0 -23 0 0 -24 0 0 -25 3 2 `#include <(:link 1 0 -45 2 :)> [@namespace boost { (:include decl pre_indent="4":) }@] 0 -26 1 2 [@namespace boost { (:include api pre_indent="4":) }@] 0 -27 0 0 -28 3 2 `#include <(:link 1 0 -40 2 :)>\\ [@namespace boost { (:include decl pre_indent="4":) }@] 0 -29 0 0 -30 3 2 `#include <(:link 1 0 -46 2 :)> [@namespace boost { (:include decl:) }@] 0 -31 3 2 `#include <(:link 1 0 -44 2 :)> [@(:include decl:)@] 0 -32 5 2 `#include <(:link 1 0 -5 2 :)> [@namespace boost { (:include 1 0 -32 2 decl pre_indent="4":) }@] 0 -33 0 0 -36 3 2 `#include <(:link 1 0 -45 2 :)> [@namespace boost { (:include decl pre_indent="4":) }@] 0 -37 3 2 `#include < 1 0 -46 2 > (:include decl:) 0 -11 0 0 -45 3 2 [@#include <(:link 1 0 -26 2 :)> namespace boost { (:include api pre_indent="4":) }@] 0 -43 1 2 [@#include <boost/shared_ptr.hpp> namespace boost { (:include api pre_indent="4":) }@] 0 -47 0 0 -46 1 2 (:include api:) 0 -48 0 0 -41 3 2 [@#include < 1 0 -26 2 > namespace boost { (:include api pre_indent="4":) }@] 0 -40 3 2 [@#include <string> namespace boost { (:include 1 0 -8 2 decl pre_indent="4":) (:include api pre_indent="4":) }@] 0 -49 0 0 -35 3 2 `#include <(:link 1 0 -45 2 :)> [@namespace boost { (:include decl pre_indent="4":) }@] 0 -10 0 0 -44 3 2 [@#include <(:link 1 0 -26 2 :)> #include <boost/current_function.hpp> #include <boost/shared_ptr.hpp> namespace boost { (:include api pre_indent="4":) }@] 0 -39 1 2 [@(:include api:)@] 0 -42 1 2 [@namespace boost { (:include api pre_indent="4":) }@] 0 -38 0 0 -34 3 2 `#include < 1 0 -13 2 > [@namespace boost { (:include decl pre_indent="4":) }@] 56 reno_context_map 45 -5 -6 -7 -8 -9 -12 -13 -14 -15 -16 -17 -18 -19 -20 -21 -22 -23 -24 -25 -26 -27 -28 -29 -30 -31 -32 -33 -36 -37 -11 -45 -43 -47 -46 -48 -41 -40 -49 -35 -10 -44 -39 -42 -38 -34 45 0 1 -33 0 1 -29 0 1 -10 0 1 -27 0 1 -13 0 1 -41 0 1 -9 2 00067869F918D0E8905D8A464C17FA9DAD9F497B3A172EB360239EEB5778A206 3465219615 4025 518 6E325144EF4F41FA3A225EB30729101382C4E99B3D6160E307311E4B4E641010 1097215175 161 240 0 ../../../../boost/exception/info.hpp 0 0 -31 2 00067869F918D0E8905D8A464C17FA9DAD9F497B3A172EB360239EEB5778A206 3465219615 4025 518 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