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Boost Error Codes


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bool operator<( const error_category & rhs ) const noexcept; Returns: std::less()( this, &rhs noexcept). [Note: std::less provides a total ordering for pointers. --end note] Class error_code The class error_code describes You seem to have CSS turned off. This means that applications using custom error_category types should create a single object of each such type. end note ] Class error_category synopsis namespace boost { namespace system { class error_category Thanks, Lothar [asio-users] async_read_some handler error codes From: Matthias Vallentin - 2010-01-29 09:16:04 I have a quick question about async_read_some handler error codes, as discussed in [1].

Boost System Make_error_code

Throws: Nothing. bool operator!=( const error_category & rhs ) const noexcept; Returns: this != &rhs. Old usage, now broken Replacement generic_category generic_category() system_category system_category() User-defined BOOST_POSIX_API and BOOST_WINDOWS_API macros are no longer supported. Note that you'll have to do a little digging on linux as the actual codes are stored in a more obscure file, such as /usr/include/asm-generic/errno.h –Gearoid Murphy Oct 17 '10 at

Sensible defaults are provided, so users may ignore these macros if they prefer. This member function returns the error code stored in the object.By default, 0 means no error. Does that help? –John P May 28 at 17:30 add a comment| up vote 1 down vote Are you using boost::system? Boost Error Code To String The value type returned shall not be convertible to int.

bool operator!=( const error_code & code, const error_condition & condition ) noexcept; bool operator!=( const error_condition & condition, const error_code & code ) noexcept; Returns: !( code == condition ). Is it dangerous to compile arbitrary C? Briefly describe the problem (required): Upload screenshot of ad (required): Select a file, or drag & drop file here. ✔ ✘ Please provide the ad click URL, if possible: Home Browse All four classes were added to the standard library with C++11.

Classes may be derived from error_category to support categories of errors in addition to those defined in the Boost System library. Boost Error Code 2048 I ignore these errors: boost::asio::error::interrupted boost::asio::error::try_again ----Scott. virtual string message( int ev ) const noexcept =0; Returns: A string that describes the error denoted by ev. This is achieved by // abstract base class error_category supplying the polymorphic behavior, // and error_code containing a pointer to an object of a type derived // from error_category.

Boost System Error_code Example

Remarks: This operator shall not participate in overload resolution unless is_error_condition_enum::value is true. Deprecated features are excluded. Boost System Make_error_code Is there any error code > for the handler which is only temporary and should not lead to closing > the session? Boost Mobile Error Codes Postcondition: code() == ec
&& std::strcmp( this->runtime_error::what(), what_arg ) == 0 system_error( error_code ec, const std::string & what_arg ); Effects: Constructs an object of class system_error.

operation_aborted is returned when an asynchronous operation is aborted (doesn't matter if it's a wait handler, a read handler, a write handler etc.). http://hammerofcode.com/error-code/boost-error-code-995.php Design Rationale Class error_code and error_condition are designed as a value types so they can be copied without slicing and do not requiring heap allocation, but still have polymorphic behavior based template std::basic_ostream& operator<<( basic_ostream& os, const error_code & ec ); Effects: os << ec.category().name() << ':' << ec.value(). My table doesn't fit; what are my options? Boost Asio Error Codes

I use ASIO to establish a connection, but then a 3rd party library needs to do something in the read handler as soon as new data is ready. It would be really bad, for example, if this would happen in a timer callback, because the timer cannot be restarted easily. http://www.icir.org/matthias Re: [asio-users] async_read_some handler error codes From: Scott Gifford - 2009-07-30 16:01:18 Lothar May writes: [...] > Is there any error code for the handler which is only Check This Out Postconditions: val_ == val && cat_ == &cat.

The values appear to be standardized across Unix/Linux systems, which means they're easy enough to look up, but AFAIK/understand the Boost definitions are partly there to eliminate this kind of drudgery. Boost Error Code 67 No, thanks Because error codes are only required to be unique within a category, you should create a new category whenever you want to define error codes specific to your program.

template error_code & operator=( ErrorCodeEnum val ) noexcept; Postconditions: *this == make_error_code( val ).

operator unspecified-bool-type() const; Returns: if value() != 0, returns a value that will evaluate true in a boolean context; otherwise, returns a value that will evaluate false in a boolean context. Is there any error code >> for the handler which is only temporary and should not lead to closing >> the session? > > Can you log something when you receive What instruction on the STM32 consumes the least amount of power? Boost Error Code 107 On Linux, it's /usr/include/asm-generic/errno-base.h and /usr/include/asm-generic/errno.h), see lxr.linux.no/linux/include/asm-generic/errno-base.h and lxr.linux.no/linux/include/asm-generic/errno.h . –pts Oct 4 '10 at 16:46 is your question resolved now? –Sam Miller Oct 16 '10 at 14:20

error_condition make_error_condition( errc::errc_t e ) noexcept; Returns: error_condition( static_cast( e ), generic_category()). To ease transition, Boost.System deprecates the old names, but continues to provide them unless macro BOOST_SYSTEM_NO_DEPRECATED is defined. The exception is caught in main(), which writes the error code and the error category to standard error. this contact form Errors created with boost::system::errc::make_error_code() automatically belong to the generic category.

The documentation [2] says that "if a wait handler is cancelled, the boost::system::error_code passed to it contains the value boost::asio::error::operation_aborted". after 24 hours, or if an error occurred). Get 10 Days Free Recommended for you Prev Synchronous versus asynchronous Next Threading in Boost.Asio Explore Tour Pricing Enterprise Government Education Queue App Learn Blog Contact Careers Press Resources Support Twitter While exceptions are the preferred C++ default error code reporting mechanism, users of libraries dependent on low-level API'soften need overloads reporting error conditions via error code arguments and/or return values rather

What does boost::asio::error::operation_aborted mean > when the code does not use any timers? Distributed under the Boost Software License, Version 1.0. This happens for example when you close the socket while there is a > pending asynchronous operation. If your development environment supports C++11, you don’t need to use Boost.System.

Remarks: This constructor shall not participate in overload resolution unless is_error_condition_enum::value is true. Is there any error code for the handler which is only temporary and should not lead to closing the session? Unlike Example 55.3, the parameter ev is usually evaluated to return a description based on the error code.An object of the type of the newly created error category can be used to For example, // // // // // // These headers are effectively empty for compiles on operating systems // where they are not applicable. // ----------------------------------------------------------------------// // class

Synchronous versus asynchronous Exceptions versus error codes Threading in Boost.Asio Not just networking Timers The io_service class Summary 2.