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Merge system and filesystem branches, bringing them in sync with N2415. Several filesystem bugs fixed, and current_path setter added.

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[SVN r39173]
This commit is contained in:
Beman Dawes
2007-09-09 14:59:10 +00:00
parent 1656e087bb
commit 04e774f337
12 changed files with 1466 additions and 551 deletions
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56
build/Jamfile
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@ -1,56 +0,0 @@
# Boost System Library Build Jamfile
# (C) Copyright Beman Dawes 2002, 2006
# Distributed under the Boost Software License, Version 1.0.
# (See accompanying file LICENSE_1_0.txt or www.boost.org/LICENSE_1_0.txt)
# See library home page at http://www.boost.org/libs/system
subproject libs/system/build ;
SOURCES = error_code ;
lib boost_system
: ../src/$(SOURCES).cpp
: # build requirements
<define>BOOST_SYSTEM_STATIC_LINK
<sysinclude>$(BOOST_AUX_ROOT) <sysinclude>$(BOOST_ROOT)
# common-variant-tag ensures that the library will
# be named according to the rules used by the install
# and auto-link features:
common-variant-tag
: debug release # build variants
;
dll boost_system
: ../src/$(SOURCES).cpp
: # build requirements
<define>BOOST_SYSTEM_DYN_LINK=1 # tell source we're building dll's
<runtime-link>dynamic # build only for dynamic runtimes
<sysinclude>$(BOOST_AUX_ROOT) <sysinclude>$(BOOST_ROOT)
# common-variant-tag ensures that the library will
# be named according to the rules used by the install
# and auto-link features:
common-variant-tag
: debug release # build variants
;
install system lib
: <lib>boost_system <dll>boost_system
;
stage stage/lib : <lib>boost_system <dll>boost_system
:
# copy to a path rooted at BOOST_ROOT:
<locate>$(BOOST_ROOT)
# make sure the names of the libraries are correctly named:
common-variant-tag
# add this target to the "stage" and "all" psuedo-targets:
<target>stage
<target>all
:
debug release
;
# end

7
doc/error_code.html
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@ -30,6 +30,11 @@ code, usually one returned by an API. Class <code>
an identifier for&nbsp;a an identifier for&nbsp;a
particular kind of error code. Users or particular kind of error code. Users or
third-parties may add additional error categories.</p> third-parties may add additional error categories.</p>
<h2>Builds</h2>
<p>The system library is required by default. If the preprocessor macro name
BOOST_ERROR_CODE_HEADER_ONLY is defined, no object library or shared/DLL library
is required. Only one translation unit may defined BOOST_ERROR_CODE_HEADER_ONLY,
otherwise symbols will be multiply defined.</p>
<h2><a name="Synopsis">Synopsis</a></h2> <h2><a name="Synopsis">Synopsis</a></h2>
<pre>namespace boost <pre>namespace boost
{ {
@ -254,7 +259,7 @@ choice for this type is pointer-to-member. <i>
Oleg Abrosimov.</p> Oleg Abrosimov.</p>
<hr> <hr>
<p>Last revised: <p>Last revised:
<!--webbot bot="Timestamp" s-type="EDITED" s-format="%d %B, %Y" startspan -->06 September, 2006<!--webbot bot="Timestamp" endspan i-checksum="39349" --></p> <!--webbot bot="Timestamp" s-type="EDITED" s-format="%d %B, %Y" startspan -->30 August, 2007<!--webbot bot="Timestamp" endspan i-checksum="34727" --></p>
<p><EFBFBD> Copyright Beman Dawes, 2006</p> <p><EFBFBD> Copyright Beman Dawes, 2006</p>
<p>Distributed under the Boost Software License, Version 1.0. (See accompanying <p>Distributed under the Boost Software License, Version 1.0. (See accompanying
file <a href="../../../LICENSE_1_0.txt">LICENSE_1_0.txt</a> or copy at file <a href="../../../LICENSE_1_0.txt">LICENSE_1_0.txt</a> or copy at

14
include/boost/cerrno.hpp
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@ -1,14 +1,14 @@
// Boost Filesystem cerrno.hpp header --------------------------------------// // Boost cerrno.hpp header -------------------------------------------------//
// <20> Copyright Beman Dawes 2005. // Copyright Beman Dawes 2005.
// Use, modification, and distribution is subject to the Boost Software // Use, modification, and distribution is subject to the Boost Software
// License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at // License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt) // http://www.boost.org/LICENSE_1_0.txt)
// See library home page at http://www.boost.org/libs/filesystem // See library home page at http://www.boost.org/libs/system
#ifndef BOOST_FILESYSTEM_CERRNO_HPP #ifndef BOOST_CERRNO_HPP
#define BOOST_FILESYSTEM_CERRNO_HPP #define BOOST_CERRNO_HPP
#include <cerrno> #include <cerrno>
@ -190,8 +190,4 @@
#define EILSEQ 9945 #define EILSEQ 9945
#endif #endif
#define EBADHANDLE 9998 // bad handle
#define EOTHER 9999 // Other error not translatable
// to a POSIX errno value
#endif // include guard #endif // include guard

2
include/boost/system/config.hpp
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@ -28,7 +28,7 @@
// enable dynamic linking on Windows ---------------------------------------// // enable dynamic linking on Windows ---------------------------------------//
//# if (defined(BOOST_ALL_DYN_LINK) || defined(BOOST_SYSTEM_DYN_LINK)) && defined(__BORLANDC__) && defined(__WIN32__) //# if (defined(BOOST_ALL_DYN_LINK) || defined(BOOST_SYSTEM_DYN_LINK)) && defined(__BORLANDC__) && defined(__WIN32__)
//# error Dynamic linking Boost.Filesystem does not work for Borland; use static linking instead //# error Dynamic linking Boost.System does not work for Borland; use static linking instead
//# endif //# endif
#ifdef BOOST_HAS_DECLSPEC // defined in config system #ifdef BOOST_HAS_DECLSPEC // defined in config system

657
include/boost/system/error_code.hpp
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@ -1,22 +1,33 @@
// boost/system/error_code.hpp ---------------------------------------------// // boost/system/error_code.hpp ---------------------------------------------//
// Copyright Beman Dawes 2006 // Copyright Beman Dawes 2006, 2007
// Copyright Christoper Kohlhoff 2007
// Distributed under the Boost Software License, Version 1.0. (See accompanying // Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
// See library home page at http://www.boost.org/libs/filesystem // See library home page at http://www.boost.org/libs/system
#ifndef BOOST_SYSTEM_ERROR_CODE_HPP #ifndef BOOST_ERROR_CODE_HPP
#define BOOST_SYSTEM_ERROR_CODE_HPP #define BOOST_ERROR_CODE_HPP
#include <boost/system/config.hpp> #include <boost/system/config.hpp>
#include <boost/cstdint.hpp> #include <boost/cstdint.hpp>
#include <boost/assert.hpp> #include <boost/assert.hpp>
#include <boost/operators.hpp> #include <boost/operators.hpp>
#include <boost/detail/identifier.hpp> #include <boost/noncopyable.hpp>
#include <boost/utility/enable_if.hpp>
#include <ostream>
#include <string> #include <string>
#include <stdexcept> #include <stdexcept>
#include <functional>
// TODO: undef these macros if not already defined
#include <boost/cerrno.hpp>
# ifdef BOOST_WINDOWS_API
# include <winerror.h>
# endif
#include <boost/config/abi_prefix.hpp> // must be the last #include #include <boost/config/abi_prefix.hpp> // must be the last #include
@ -24,125 +35,623 @@ namespace boost
{ {
namespace system namespace system
{ {
# ifndef BOOST_NO_STD_WSTRING // workaround Cygwin's lack of wstring_t
typedef std::wstring wstring_t;
# else
typedef std::basic_string<wchar_t> wstring_t;
# endif
class error_code; class error_code;
class error_condition;
// typedefs for registering additional decoders -------------------------// // "Concept" helpers ---------------------------------------------------//
typedef int (*errno_decoder)( const error_code & ); template< class T >
typedef std::string (*message_decoder)( const error_code & ); struct is_error_code_enum { static const bool value = false; };
typedef wstring_t (*wmessage_decoder)( const error_code & );
template< class T >
struct is_error_condition_enum { static const bool value = false; };
// portable error_conditions -------------------------------------------//
namespace posix
{
enum posix_errno
{
success = 0,
address_family_not_supported = EAFNOSUPPORT,
address_in_use = EADDRINUSE,
address_not_available = EADDRNOTAVAIL,
already_connected = EISCONN,
argument_list_too_long = E2BIG,
argument_out_of_domain = EDOM,
bad_address = EFAULT,
bad_file_descriptor = EBADF,
bad_message = EBADMSG,
broken_pipe = EPIPE,
connection_aborted = ECONNABORTED,
connection_already_in_progress = EALREADY,
connection_refused = ECONNREFUSED,
connection_reset = ECONNRESET,
cross_device_link = EXDEV,
destination_address_required = EDESTADDRREQ,
device_or_resource_busy = EBUSY,
directory_not_empty = ENOTEMPTY,
executable_format_error = ENOEXEC,
file_exists = EEXIST,
file_too_large = EFBIG,
filename_too_long = ENAMETOOLONG,
function_not_supported = ENOSYS,
host_unreachable = EHOSTUNREACH,
identifier_removed = EIDRM,
illegal_byte_sequence = EILSEQ,
inappropriate_io_control_operation = ENOTTY,
interrupted = EINTR,
invalid_argument = EINVAL,
invalid_seek = ESPIPE,
io_error = EIO,
is_a_directory = EISDIR,
message_size = EMSGSIZE,
network_down = ENETDOWN,
network_reset = ENETRESET,
network_unreachable = ENETUNREACH,
no_buffer_space = ENOBUFS,
no_child_process = ECHILD,
no_link = ENOLINK,
no_lock_available = ENOLCK,
no_message_available = ENODATA,
no_message = ENOMSG,
no_protocol_option = ENOPROTOOPT,
no_space_on_device = ENOSPC,
no_stream_resources = ENOSR,
no_such_device_or_address = ENXIO,
no_such_device = ENODEV,
no_such_file_or_directory = ENOENT,
no_such_process = ESRCH,
not_a_directory = ENOTDIR,
not_a_socket = ENOTSOCK,
not_a_stream = ENOSTR,
not_connected = ENOTCONN,
not_enough_memory = ENOMEM,
not_supported = ENOTSUP,
operation_canceled = ECANCELED,
operation_in_progress = EINPROGRESS,
operation_not_permitted = EPERM,
operation_not_supported = EOPNOTSUPP,
operation_would_block = EWOULDBLOCK,
owner_dead = EOWNERDEAD,
permission_denied = EACCES,
protocol_error = EPROTO,
protocol_not_supported = EPROTONOSUPPORT,
read_only_file_system = EROFS,
resource_deadlock_would_occur = EDEADLK,
resource_unavailable_try_again = EAGAIN,
result_out_of_range = ERANGE,
state_not_recoverable = ENOTRECOVERABLE,
stream_timeout = ETIME,
text_file_busy = ETXTBSY,
timed_out = ETIMEDOUT,
too_many_files_open_in_system = ENFILE,
too_many_files_open = EMFILE,
too_many_links = EMLINK,
too_many_synbolic_link_levels = ELOOP,
value_too_large = EOVERFLOW,
wrong_protocol_type = EPROTOTYPE,
};
} // namespace posix
template<> struct is_error_condition_enum<posix::posix_errno>
{ static const bool value = true; };
// class error_category ------------------------------------------------// // class error_category ------------------------------------------------//
class BOOST_SYSTEM_DECL error_category class error_category : public noncopyable
: public boost::detail::identifier< uint_least32_t, error_category >
{ {
public: public:
error_category() virtual ~error_category(){}
: boost::detail::identifier< uint_least32_t, error_category >(0){} virtual const char * name() const; // see implementation note below
explicit error_category( value_type v ) virtual std::string message( int ev ) const; // see implementation note below
: boost::detail::identifier< uint_least32_t, error_category >(v){} virtual error_condition default_error_condition( int ev ) const;
virtual bool equivalent( int code, const error_condition & condition ) const;
virtual bool equivalent( const error_code & code, int condition ) const;
bool operator==(const error_category & rhs) const { return this == &rhs; }
bool operator!=(const error_category & rhs) const { return this != &rhs; }
bool operator<( const error_category & rhs ) const
{
return std::less<const error_category*>()( this, &rhs );
}
}; };
// predefined error categories -----------------------------------------// // predefined error categories -----------------------------------------//
const error_category errno_ecat(0); // unspecified value BOOST_SYSTEM_DECL extern const error_category & posix_category;
BOOST_SYSTEM_DECL extern const error_category & system_category;
# ifdef BOOST_WINDOWS_API // deprecated synonyms
const error_category native_ecat(1); // unspecified value BOOST_SYSTEM_DECL extern const error_category & errno_ecat; // posix_category
# else BOOST_SYSTEM_DECL extern const error_category & native_ecat; // system_category
const error_category native_ecat(0); // unspecified value
# endif
// class error_code ----------------------------------------------------// // class error_condition -----------------------------------------------//
class BOOST_SYSTEM_DECL error_code // error_conditions are portable, error_codes are system or lib specific
class error_condition
{ {
public: public:
typedef boost::int_least32_t value_type;
// constructors: // constructors:
error_code() error_condition() : m_val(0), m_cat(&posix_category) {}
: m_value(0), m_category(errno_ecat) {} error_condition( int val, const error_category & cat ) : m_val(val), m_cat(&cat) {}
error_code( value_type val, error_category cat )
: m_value(val), m_category(cat) {}
template <class ConditionEnum>
error_condition(ConditionEnum e,
typename boost::enable_if<is_error_condition_enum<ConditionEnum> >::type* = 0)
{
*this = make_error_condition(e);
}
// modifiers:
void assign( int val, const error_category & cat )
{
m_val = val;
m_cat = &cat;
}
template<typename ConditionEnum>
typename boost::enable_if<is_error_condition_enum<ConditionEnum>, error_condition>::type &
operator=( ConditionEnum val )
{
*this = make_error_condition(val);
return *this;
}
void clear()
{
m_val = 0;
m_cat = &posix_category;
}
// observers: // observers:
value_type value() const { return m_value; } int value() const { return m_val; }
error_category category() const { return m_category; } const error_category & category() const { return *m_cat; }
int to_errno() const; // name chosen to limit surprises std::string message() const { return m_cat->message(value()); }
// see Kohlhoff Jun 28 '06
std::string message() const;
wstring_t wmessage() const;
void assign( value_type val, const error_category & cat )
{
m_value = val;
m_category = cat;
}
// relationals:
bool operator==( const error_code & rhs ) const
{
return value() == rhs.value() && category() == rhs.category();
}
bool operator!=( const error_code & rhs ) const
{
return !(*this == rhs);
}
bool operator<( const error_code & rhs ) const
{
return category() < rhs.category()
|| ( category() == rhs.category() && value() < rhs.value() );
}
bool operator<=( const error_code & rhs ) const { return *this == rhs || *this < rhs; }
bool operator> ( const error_code & rhs ) const { return !(*this <= rhs); }
bool operator>=( const error_code & rhs ) const { return !(*this < rhs); }
typedef void (*unspecified_bool_type)(); typedef void (*unspecified_bool_type)();
static void unspecified_bool_true() {} static void unspecified_bool_true() {}
operator unspecified_bool_type() const // true if error operator unspecified_bool_type() const // true if error
{ {
return m_value == value_type() ? 0 : unspecified_bool_true; return m_val == 0 ? 0 : unspecified_bool_true;
} }
bool operator!() const // true if no error bool operator!() const // true if no error
{ {
return m_value == value_type(); return m_val == 0;
} }
// statics: // relationals:
static error_category new_category( errno_decoder ed = 0, // the more symmetrical non-member syntax allows enum
message_decoder md = 0, wmessage_decoder wmd = 0 ); // conversions work for both rhs and lhs.
static bool get_decoders( error_category cat, errno_decoder & ed, inline friend bool operator==( const error_condition & lhs,
message_decoder & md, wmessage_decoder & wmd ); const error_condition & rhs )
{
return lhs.m_cat == rhs.m_cat && lhs.m_val == rhs.m_val;
}
inline friend bool operator<( const error_condition & lhs,
const error_condition & rhs )
// the more symmetrical non-member syntax allows enum
// conversions work for both rhs and lhs.
{
return lhs.m_cat < rhs.m_cat
|| (lhs.m_cat == rhs.m_cat && lhs.m_val < rhs.m_val);
}
private: private:
value_type m_value; int m_val;
error_category m_category; const error_category * m_cat;
};
// class error_code ----------------------------------------------------//
// We want error_code to be a value type that can be copied without slicing
// and without requiring heap allocation, but we also want it to have
// polymorphic behavior based on the error category. 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.
class error_code
{
public:
// constructors:
error_code() : m_val(0), m_cat(&system_category) {}
error_code( int val, const error_category & cat ) : m_val(val), m_cat(&cat) {}
template <class CodeEnum>
error_code(CodeEnum e,
typename boost::enable_if<is_error_code_enum<CodeEnum> >::type* = 0)
{
*this = make_error_code(e);
}
// modifiers:
void assign( int val, const error_category & cat )
{
m_val = val;
m_cat = &cat;
}
template<typename CodeEnum>
typename boost::enable_if<is_error_code_enum<CodeEnum>, error_code>::type &
operator=( CodeEnum val )
{
*this = make_error_code(val);
return *this;
}
void clear()
{
m_val = 0;
m_cat = &system_category;
}
// observers:
int value() const { return m_val; }
const error_category & category() const { return *m_cat; }
error_condition default_error_condition() const { return m_cat->default_error_condition(value()); }
std::string message() const { return m_cat->message(value()); }
typedef void (*unspecified_bool_type)();
static void unspecified_bool_true() {}
operator unspecified_bool_type() const // true if error
{
return m_val == 0 ? 0 : unspecified_bool_true;
}
bool operator!() const // true if no error
{
return m_val == 0;
}
// relationals:
inline friend bool operator==( const error_code & lhs,
const error_code & rhs )
// the more symmetrical non-member syntax allows enum
// conversions work for both rhs and lhs.
{
return lhs.m_cat == rhs.m_cat && lhs.m_val == rhs.m_val;
}
inline friend bool operator<( const error_code & lhs,
const error_code & rhs )
// the more symmetrical non-member syntax allows enum
// conversions work for both rhs and lhs.
{
return lhs.m_cat < rhs.m_cat
|| (lhs.m_cat == rhs.m_cat && lhs.m_val < rhs.m_val);
}
private:
int m_val;
const error_category * m_cat;
}; };
// non-member functions ------------------------------------------------// // non-member functions ------------------------------------------------//
inline bool operator!=( const error_code & lhs,
const error_code & rhs )
{
return !(lhs == rhs);
}
inline bool operator!=( const error_condition & lhs,
const error_condition & rhs )
{
return !(lhs == rhs);
}
inline bool operator==( const error_code & code,
const error_condition & condition )
{
return code.category().equivalent( code.value(), condition )
|| condition.category().equivalent( code, condition.value() );
}
inline bool operator!=( const error_code & lhs,
const error_condition & rhs )
{
return !(lhs == rhs);
}
inline bool operator==( const error_condition & condition,
const error_code & code )
{
return condition.category().equivalent( code, condition.value() )
|| code.category().equivalent( code.value(), condition );
}
inline bool operator!=( const error_condition & lhs,
const error_code & rhs )
{
return !(lhs == rhs);
}
// TODO: both of these may move elsewhere, but the LWG hasn't spoken yet.
template <class charT, class traits>
inline std::basic_ostream<charT,traits>&
operator<< (std::basic_ostream<charT,traits>& os, error_code ec)
{
os << ec.category().name() << ':' << ec.value();
return os;
}
inline std::size_t hash_value( const error_code & ec ) inline std::size_t hash_value( const error_code & ec )
{ {
return static_cast<std::size_t>(ec.value()) return static_cast<std::size_t>(ec.value())
+ (static_cast<std::size_t>(ec.category().value()) << 16 ); + reinterpret_cast<std::size_t>(&ec.category());
} }
// make_* functions for posix::posix_errno -----------------------------//
// explicit conversion:
inline error_code make_error_code( posix::posix_errno e )
{ return error_code( e, posix_category ); }
// implicit conversion:
inline error_condition make_error_condition( posix::posix_errno e )
{ return error_condition( e, posix_category ); }
// error_category default implementation -------------------------------//
inline error_condition error_category::default_error_condition( int ev ) const
{
return error_condition( ev, *this );
}
inline bool error_category::equivalent( int code,
const error_condition & condition ) const
{
return default_error_condition( code ) == condition;
}
inline bool error_category::equivalent( const error_code & code,
int condition ) const
{
return *this == code.category() && code.value() == condition;
}
// error_category implementation note: VC++ 8.0 objects to name() and
// message() being pure virtual functions. Thus these implementations.
inline const char * error_category::name() const
{
return "error: should never be called";
}
inline std::string error_category::message( int ev ) const
{
static std::string s("error: should never be called");
return s;
}
// ----------------------------------------------------------------------//
// Operating system specific interfaces --------------------------------//
// The interface is divided into general and system-specific portions to
// meet these requirements:
//
// * Code calling an operating system API can create an error_code with
// a single category (system_category), even for POSIX-like operating
// systems that return some POSIX errno values and some native errno
// values. This code should not have to pay the cost of distinguishing
// between categories, since it is not yet known if that is needed.
//
// * Users wishing to write system-specific code should be given enums for
// at least the common error cases.
//
// * System specific code should fail at compile time if moved to another
// operating system.
#ifdef BOOST_POSIX_API
// POSIX-based systems -------------------------------------------------//
// To construct an error_code after a API error:
//
// error_code( errno, system_category )
// User code should use the portable "posix" enums for POSIX errors; this
// allows such code to be portable to non-POSIX systems. For the non-POSIX
// errno values that POSIX-based systems typically provide in addition to
// POSIX values, use the system specific enums below.
# ifdef __CYGWIN__
namespace cygwin
{
enum cygwin_errno
{
no_net = ENONET,
no_package = ENOPKG,
no_share = ENOSHARE,
};
} // namespace cygwin
template<> struct is_error_code_enum<cygwin::cygwin_errno>
{ static const bool value = true; };
inline error_code make_error_code(cygwin::cygwin_errno e)
{ return error_code( e, system_category ); }
# elif defined(linux) || defined(__linux) || defined(__linux__)
namespace Linux // linux lowercase name preempted by use as predefined macro
{
enum linux_error
{
advertise_error = EADV,
bad_exchange = EBADE,
bad_file_number = EBADFD,
bad_font_format = EBFONT,
bad_request_code = EBADRQC,
bad_request_descriptor = EBADR,
bad_slot = EBADSLT,
channel_range = ECHRNG,
communication_error = ECOMM,
dot_dot_error = EDOTDOT,
exchange_full = EXFULL,
host_down = EHOSTDOWN,
is_named_file_type= EISNAM,
key_expired = EKEYEXPIRED,
key_rejected = EKEYREJECTED,
key_revoked = EKEYREVOKED,
level2_halt= EL2HLT,
level2_no_syncronized= EL2NSYNC,
level3_halt = EL3HLT,
level3_reset = EL3RST,
link_range = ELNRNG,
medium_type = EMEDIUMTYPE,
no_anode= ENOANO,
no_block_device = ENOTBLK,
no_csi = ENOCSI,
no_key = ENOKEY,
no_medium = ENOMEDIUM,
no_network = ENONET,
no_package = ENOPKG,
not_avail = ENAVAIL,
not_named_file_type= ENOTNAM,
not_recoverable = ENOTRECOVERABLE,
not_unique = ENOTUNIQ,
owner_dead = EOWNERDEAD,
protocol_no_supported = EPFNOSUPPORT,
remote_address_changed = EREMCHG,
remote_io_error = EREMOTEIO,
remote_object = EREMOTE,
restart_needed = ERESTART,
shared_library_access = ELIBACC,
shared_library_bad = ELIBBAD,
shared_library_execute = ELIBEXEC,
shared_library_max_ = ELIBMAX,
shared_library_section= ELIBSCN,
shutdown = ESHUTDOWN,
socket_type_not_supported = ESOCKTNOSUPPORT,
srmount_error = ESRMNT,
stream_pipe_error = ESTRPIPE,
too_many_references = ETOOMANYREFS,
too_many_users = EUSERS,
unattached = EUNATCH,
unclean = EUCLEAN,
};
} // namespace Linux
template<> struct is_error_code_enum<Linux::linux_error>
{ static const bool value = true; };
inline error_code make_error_code(Linux::linux_error e)
{ return error_code( e, system_category ); }
# endif
// TODO: Add more POSIX-based operating systems here
#elif defined(BOOST_WINDOWS_API)
// Microsoft Windows ---------------------------------------------------//
// To construct an error_code after a API error:
//
// error_code( ::GetLastError(), system_category )
namespace windows
{
enum windows_error
{
success = 0,
// These names and values are based on Windows winerror.h
invalid_function = ERROR_INVALID_FUNCTION,
file_not_found = ERROR_FILE_NOT_FOUND,
path_not_found = ERROR_PATH_NOT_FOUND,
too_many_open_files = ERROR_TOO_MANY_OPEN_FILES,
access_denied = ERROR_ACCESS_DENIED,
invalid_handle = ERROR_INVALID_HANDLE,
arena_trashed = ERROR_ARENA_TRASHED,
not_enough_memory = ERROR_NOT_ENOUGH_MEMORY,
invalid_block = ERROR_INVALID_BLOCK,
bad_environment = ERROR_BAD_ENVIRONMENT,
bad_format = ERROR_BAD_FORMAT,
invalid_access = ERROR_INVALID_ACCESS,
outofmemory = ERROR_OUTOFMEMORY,
invalid_drive = ERROR_INVALID_DRIVE,
current_directory = ERROR_CURRENT_DIRECTORY,
not_same_device = ERROR_NOT_SAME_DEVICE,
no_more_files = ERROR_NO_MORE_FILES,
write_protect = ERROR_WRITE_PROTECT,
bad_unit = ERROR_BAD_UNIT,
not_ready = ERROR_NOT_READY,
bad_command = ERROR_BAD_COMMAND,
crc = ERROR_CRC,
bad_length = ERROR_BAD_LENGTH,
seek = ERROR_SEEK,
not_dos_disk = ERROR_NOT_DOS_DISK,
sector_not_found = ERROR_SECTOR_NOT_FOUND,
out_of_paper = ERROR_OUT_OF_PAPER,
write_fault = ERROR_WRITE_FAULT,
read_fault = ERROR_READ_FAULT,
gen_failure = ERROR_GEN_FAILURE,
sharing_violation = ERROR_SHARING_VIOLATION,
lock_violation = ERROR_LOCK_VIOLATION,
wrong_disk = ERROR_WRONG_DISK,
sharing_buffer_exceeded = ERROR_SHARING_BUFFER_EXCEEDED,
handle_eof = ERROR_HANDLE_EOF,
handle_disk_full= ERROR_HANDLE_DISK_FULL,
rem_not_list = ERROR_REM_NOT_LIST,
dup_name = ERROR_DUP_NAME,
bad_net_path = ERROR_BAD_NETPATH,
network_busy = ERROR_NETWORK_BUSY,
// ...
file_exists = ERROR_FILE_EXISTS,
cannot_make = ERROR_CANNOT_MAKE,
// ...
broken_pipe = ERROR_BROKEN_PIPE,
open_failed = ERROR_OPEN_FAILED,
buffer_overflow = ERROR_BUFFER_OVERFLOW,
disk_full= ERROR_DISK_FULL,
// ...
lock_failed = ERROR_LOCK_FAILED,
busy = ERROR_BUSY,
cancel_violation = ERROR_CANCEL_VIOLATION,
already_exists = ERROR_ALREADY_EXISTS
// ...
// TODO: add more Windows errors
};
} // namespace windows
template<> struct is_error_code_enum<windows::windows_error>
{ static const bool value = true; };
inline error_code make_error_code(windows::windows_error e)
{ return error_code( e, system_category ); }
#else
# error BOOST_POSIX_API or BOOST_WINDOWS_API must be defined
#endif
} // namespace system } // namespace system
} // namespace boost } // namespace boost
#include <boost/config/abi_suffix.hpp> // pops abi_prefix.hpp pragmas #include <boost/config/abi_suffix.hpp> // pops abi_prefix.hpp pragmas
#endif // BOOST_SYSTEM_ERROR_CODE_HPP # ifdef BOOST_ERROR_CODE_HEADER_ONLY
# include <boost/../libs/system/src/error_code.cpp>
# endif
#endif // BOOST_ERROR_CODE_HPP

71
include/boost/system/system_error.hpp
View File

@ -17,59 +17,52 @@ namespace boost
{ {
namespace system namespace system
{ {
enum message_action { append_message, no_message };
// class system_error --------------------------------------------------// // class system_error --------------------------------------------------//
class system_error : public std::runtime_error class system_error : public std::runtime_error
{ {
public: public:
explicit system_error( error_code ec ) system_error( error_code ec )
: std::runtime_error(std::string()), m_error_code(ec), : std::runtime_error(""), m_error_code(ec) {}
m_append_message(true) {} system_error( error_code ec, const std::string & what_arg )
: std::runtime_error(what_arg), m_error_code(ec) {}
system_error( error_code ec, const std::string & what_arg, system_error( int ev, const error_category & ecat,
message_action ma = append_message ) const std::string & what_arg )
: std::runtime_error(what_arg), m_error_code(ec), : std::runtime_error(what_arg), m_error_code(ev,ecat) {}
m_append_message(ma==append_message) {} system_error( int ev, const error_category & ecat )
: std::runtime_error(""), m_error_code(ev,ecat) {}
system_error( error_code::value_type ev, error_category ecat )
: std::runtime_error(std::string()), m_error_code(ev,ecat),
m_append_message(true) {}
system_error( error_code::value_type ev, error_category ecat,
const std::string & what_arg, message_action ma = append_message )
: std::runtime_error(what_arg), m_error_code(ev,ecat),
m_append_message(ma==append_message) {}
virtual ~system_error() throw() {} virtual ~system_error() throw() {}
const error_code & code() const throw() { return m_error_code; } const error_code & code() const throw() { return m_error_code; }
const char * what() const throw();
const char * what() const throw()
// see http://www.boost.org/more/error_handling.html for lazy build rationale
{
if ( !m_error_code || !m_append_message ) return runtime_error::what();
if ( m_what.empty() )
{
try
{
m_what = runtime_error::what();
if ( !m_what.empty() ) m_what += ": ";
m_what += m_error_code.message();
}
catch (...) { return runtime_error::what(); }
}
return m_what.c_str();
}
private: private:
error_code m_error_code; error_code m_error_code;
mutable std::string m_what; mutable std::string m_what;
bool m_append_message;
}; };
// implementation ------------------------------------------------------//
inline const char * system_error::what() const throw()
// see http://www.boost.org/more/error_handling.html for lazy build rationale
{
if ( m_what.empty() )
{
try
{
m_what = this->runtime_error::what();
if ( m_error_code )
{
if ( !m_what.empty() ) m_what += ": ";
m_what += m_error_code.message();
}
}
catch (...) { return runtime_error::what(); }
}
return m_what.c_str();
}
} // namespace system } // namespace system
} // namespace boost } // namespace boost

505
src/error_code.cpp
View File

@ -30,15 +30,12 @@
#include <cassert> #include <cassert>
using namespace boost::system; using namespace boost::system;
using namespace boost::system::posix;
#include <cstring> // for strerror/strerror_r #include <cstring> // for strerror/strerror_r
# ifdef BOOST_NO_STDC_NAMESPACE
namespace std { using ::strerror; }
# endif
# if defined( BOOST_WINDOWS_API ) # if defined( BOOST_WINDOWS_API )
# include "windows.h" # include <windows.h>
# ifndef ERROR_INCORRECT_SIZE # ifndef ERROR_INCORRECT_SIZE
# define ERROR_INCORRECT_SIZE ERROR_BAD_ARGUMENTS # define ERROR_INCORRECT_SIZE ERROR_BAD_ARGUMENTS
# endif # endif
@ -49,75 +46,282 @@ using namespace boost::system;
namespace namespace
{ {
#ifdef BOOST_WINDOWS_API struct system_to_posix_t
struct native_to_errno_t
{ {
boost::int32_t native_value; int system_value;
int to_errno; boost::system::posix::posix_errno posix_value;
}; };
const native_to_errno_t native_to_errno[] = const system_to_posix_t system_to_posix[] =
{ {
#ifdef BOOST_POSIX_API
// POSIX-like O/S -> posix_errno decode table ----------------------------//
// most common errors first to speed sequential search
{ ENOENT, no_such_file_or_directory },
{ EACCES, permission_denied },
{ EINVAL, invalid_argument },
// rest are alphabetical for easy maintenance
{ 0, success },
{ E2BIG, argument_list_too_long },
{ EADDRINUSE, address_in_use },
{ EADDRNOTAVAIL, address_not_available },
{ EAFNOSUPPORT, address_family_not_supported },
{ EAGAIN, resource_unavailable_try_again },
{ EALREADY, connection_already_in_progress },
{ EBADF, bad_file_descriptor },
{ EBADMSG, bad_message },
{ EBUSY, device_or_resource_busy },
{ ECANCELED, operation_canceled },
{ ECHILD, no_child_process },
{ ECONNABORTED, connection_aborted },
{ ECONNREFUSED, connection_refused },
{ ECONNRESET, connection_reset },
{ EDEADLK, resource_deadlock_would_occur },
{ EDESTADDRREQ, destination_address_required },
{ EDOM, argument_out_of_domain },
{ EEXIST, file_exists },
{ EFAULT, bad_address },
{ EFBIG, file_too_large },
{ EHOSTUNREACH, host_unreachable },
{ EIDRM, identifier_removed },
{ EILSEQ, illegal_byte_sequence },
{ EINPROGRESS, operation_in_progress },
{ EINTR, interrupted },
{ EIO, io_error },
{ EISCONN, already_connected },
{ EISDIR, is_a_directory },
{ ELOOP, too_many_synbolic_link_levels },
{ EMFILE, too_many_files_open },
{ EMLINK, too_many_links },
{ EMSGSIZE, message_size },
{ ENAMETOOLONG, filename_too_long },
{ ENETDOWN, network_down },
{ ENETRESET, network_reset },
{ ENETUNREACH, network_unreachable },
{ ENFILE, too_many_files_open_in_system },
{ ENOBUFS, no_buffer_space },
{ ENODATA, no_message_available },
{ ENODEV, no_such_device },
{ ENOEXEC, executable_format_error },
{ ENOLCK, no_lock_available },
{ ENOLINK, no_link },
{ ENOMEM, not_enough_memory },
{ ENOMSG, no_message },
{ ENOPROTOOPT, no_protocol_option },
{ ENOSPC, no_space_on_device },
{ ENOSR, no_stream_resources },
{ ENOSTR, not_a_stream },
{ ENOSYS, function_not_supported },
{ ENOTCONN, not_connected },
{ ENOTDIR, not_a_directory },
{ ENOTEMPTY, directory_not_empty },
{ ENOTRECOVERABLE, state_not_recoverable },
{ ENOTSOCK, not_a_socket },
{ ENOTSUP, not_supported },
{ ENOTTY, inappropriate_io_control_operation },
{ ENXIO, no_such_device_or_address },
{ EOPNOTSUPP, operation_not_supported },
{ EOVERFLOW, value_too_large },
{ EOWNERDEAD, owner_dead },
{ EPERM, operation_not_permitted },
{ EPIPE, broken_pipe },
{ EPROTO, protocol_error },
{ EPROTONOSUPPORT, protocol_not_supported },
{ EPROTOTYPE, wrong_protocol_type },
{ ERANGE, result_out_of_range },
{ EROFS, read_only_file_system },
{ ESPIPE, invalid_seek },
{ ESRCH, no_such_process },
{ ETIME, stream_timeout },
{ ETIMEDOUT, timed_out },
{ ETXTBSY, text_file_busy },
{ EWOULDBLOCK, operation_would_block },
{ EXDEV, cross_device_link }
#else
// Windows system -> posix_errno decode table ----------------------------//
// see WinError.h comments for descriptions of errors // see WinError.h comments for descriptions of errors
// most common errors first to speed sequential search // most common errors first to speed sequential search
{ ERROR_FILE_NOT_FOUND, ENOENT }, { ERROR_FILE_NOT_FOUND, no_such_file_or_directory },
{ ERROR_PATH_NOT_FOUND, ENOENT }, { ERROR_PATH_NOT_FOUND, no_such_file_or_directory },
// rest are alphabetical for easy maintenance // rest are alphabetical for easy maintenance
{ 0, 0 }, // no error { 0, success },
{ ERROR_ACCESS_DENIED, EACCES }, { ERROR_ACCESS_DENIED, permission_denied },
{ ERROR_ALREADY_EXISTS, EEXIST }, { ERROR_ALREADY_EXISTS, file_exists },
{ ERROR_BAD_UNIT, ENODEV }, { ERROR_BAD_UNIT, no_such_device },
{ ERROR_BUFFER_OVERFLOW, ENAMETOOLONG }, { ERROR_BUFFER_OVERFLOW, filename_too_long },
{ ERROR_BUSY, EBUSY }, { ERROR_BUSY, device_or_resource_busy },
{ ERROR_BUSY_DRIVE, EBUSY }, { ERROR_BUSY_DRIVE, device_or_resource_busy },
{ ERROR_CANNOT_MAKE, EACCES }, { ERROR_CANNOT_MAKE, permission_denied },
{ ERROR_CANTOPEN, EIO }, { ERROR_CANTOPEN, io_error },
{ ERROR_CANTREAD, EIO }, { ERROR_CANTREAD, io_error },
{ ERROR_CANTWRITE, EIO }, { ERROR_CANTWRITE, io_error },
{ ERROR_CURRENT_DIRECTORY, EACCES }, { ERROR_CURRENT_DIRECTORY, permission_denied },
{ ERROR_DEV_NOT_EXIST, ENODEV }, { ERROR_DEV_NOT_EXIST, no_such_device },
{ ERROR_DEVICE_IN_USE, EBUSY }, { ERROR_DEVICE_IN_USE, device_or_resource_busy },
{ ERROR_DIR_NOT_EMPTY, ENOTEMPTY }, { ERROR_DIR_NOT_EMPTY, directory_not_empty },
{ ERROR_DIRECTORY, EINVAL }, // WinError.h: "The directory name is invalid" { ERROR_DIRECTORY, invalid_argument }, // WinError.h: "The directory name is invalid"
{ ERROR_DISK_FULL, ENOSPC }, { ERROR_DISK_FULL, no_space_on_device },
{ ERROR_FILE_EXISTS, EEXIST }, { ERROR_FILE_EXISTS, file_exists },
{ ERROR_HANDLE_DISK_FULL, ENOSPC }, { ERROR_HANDLE_DISK_FULL, no_space_on_device },
{ ERROR_INVALID_ACCESS, EACCES }, { ERROR_INVALID_ACCESS, permission_denied },
{ ERROR_INVALID_DRIVE, ENODEV }, { ERROR_INVALID_DRIVE, no_such_device },
{ ERROR_INVALID_FUNCTION, ENOSYS }, { ERROR_INVALID_FUNCTION, function_not_supported },
{ ERROR_INVALID_HANDLE, EBADHANDLE }, { ERROR_INVALID_HANDLE, invalid_argument },
{ ERROR_INVALID_NAME, EINVAL }, { ERROR_INVALID_NAME, invalid_argument },
{ ERROR_LOCK_VIOLATION, EACCES }, { ERROR_LOCK_VIOLATION, no_lock_available },
{ ERROR_LOCKED, EACCES }, { ERROR_LOCKED, no_lock_available },
{ ERROR_NEGATIVE_SEEK, EINVAL }, { ERROR_NEGATIVE_SEEK, invalid_argument },
{ ERROR_NOACCESS, EACCES }, { ERROR_NOACCESS, permission_denied },
{ ERROR_NOT_ENOUGH_MEMORY, ENOMEM }, { ERROR_NOT_ENOUGH_MEMORY, not_enough_memory },
{ ERROR_NOT_READY, EAGAIN }, { ERROR_NOT_READY, resource_unavailable_try_again },
{ ERROR_NOT_SAME_DEVICE, EXDEV }, { ERROR_NOT_SAME_DEVICE, cross_device_link },
{ ERROR_OPEN_FAILED, EIO }, { ERROR_OPEN_FAILED, io_error },
{ ERROR_OPEN_FILES, EBUSY }, { ERROR_OPEN_FILES, device_or_resource_busy },
{ ERROR_OUTOFMEMORY, ENOMEM }, { ERROR_OUTOFMEMORY, not_enough_memory },
{ ERROR_READ_FAULT, EIO }, { ERROR_READ_FAULT, io_error },
{ ERROR_SEEK, EIO }, { ERROR_SEEK, io_error },
{ ERROR_SHARING_VIOLATION, EACCES }, { ERROR_SHARING_VIOLATION, permission_denied },
{ ERROR_TOO_MANY_OPEN_FILES, ENFILE }, { ERROR_TOO_MANY_OPEN_FILES, too_many_files_open },
{ ERROR_WRITE_FAULT, EIO }, { ERROR_WRITE_FAULT, io_error },
{ ERROR_WRITE_PROTECT, EROFS } { ERROR_WRITE_PROTECT, permission_denied }
#endif
}; };
int windows_ed( const error_code & ec ) // standard error categories -------------------------------------------//
class posix_error_category : public error_category
{ {
const native_to_errno_t * cur = native_to_errno; public:
do const char * name() const;
{ std::string message( int ev ) const;
if ( ec.value() == cur->native_value ) return cur->to_errno; };
++cur;
} while ( cur != native_to_errno + sizeof(native_to_errno)/sizeof(native_to_errno_t) ); class system_error_category : public error_category
return EOTHER; {
public:
const char * name() const;
posix::posix_errno posix( int ev ) const;
std::string message( int ev ) const;
error_condition default_error_condition( int ev ) const;
};
const posix_error_category posix_category_const;
const system_error_category system_category_const;
// posix_error_category implementation ---------------------------------//
const char * posix_error_category::name() const
{
return "POSIX";
} }
std::string posix_error_category::message( int ev ) const
{
// strerror_r is preferred because it is always thread safe,
// however, we fallback to strerror in certain cases because:
// -- Windows doesn't provide strerror_r.
// -- HP and Sundo provide strerror_r on newer systems, but there is
// no way to tell if is available at runtime and in any case their
// versions of strerror are thread safe anyhow.
// -- Linux only sometimes provides strerror_r.
// -- Tru64 provides strerror_r only when compiled -pthread.
// -- VMS doesn't provide strerror_r, but on this platform, strerror is
// thread safe.
# if defined(BOOST_WINDOWS_API) || defined(__hpux) || defined(__sun)\
|| (defined(__linux) && (!defined(__USE_XOPEN2K) || defined(BOOST_SYSTEM_USE_STRERROR)))\
|| (defined(__osf__) && !defined(_REENTRANT))\
|| (defined(__vms))
const char * c_str = std::strerror( ev );
return std::string( c_str ? c_str : "invalid_argument" );
# else
char buf[64];
char * bp = buf;
std::size_t sz = sizeof(buf);
# if defined(__CYGWIN__) || defined(__USE_GNU)
// Oddball version of strerror_r
const char * c_str = strerror_r( ev, bp, sz );
return std::string( c_str ? c_str : "invalid_argument" );
# else
// POSIX version of strerror_r
int result;
for (;;)
{
// strerror_r returns 0 on success, otherwise ERANGE if buffer too small,
// invalid_argument if ev not a valid error number
if ( (result = strerror_r( ev, bp, sz )) == 0 )
break;
else
{
# if defined(__linux)
// Linux strerror_r returns -1 on error, with error number in errno
result = errno;
# endif
if ( result != ERANGE ) break;
if ( sz > sizeof(buf) ) std::free( bp );
sz *= 2;
if ( (bp = static_cast<char*>(std::malloc( sz ))) == 0 )
return std::string( "ENOMEM" );
}
}
try
{
std::string msg( ( result == invalid_argument ) ? "invalid_argument" : bp );
if ( sz > sizeof(buf) ) std::free( bp );
sz = 0;
return msg;
}
catch(...)
{
if ( sz > sizeof(buf) ) std::free( bp );
throw;
}
# endif
# endif
}
// system_error_category implementation --------------------------------//
const char * system_error_category::name() const
{
return "system";
}
posix_errno system_error_category::posix( int ev ) const
{
const system_to_posix_t * cur = system_to_posix;
do
{
if ( ev == cur->system_value )
return cur->posix_value;
++cur;
} while ( cur != system_to_posix
+ sizeof(system_to_posix)/sizeof(system_to_posix_t) );
return static_cast<posix::posix_errno>(-1);
}
error_condition system_error_category::default_error_condition( int ev ) const
{
int tmp = posix(ev);
return tmp >= 0
? error_condition( tmp, posix_category )
: error_condition( ev, system_category );
}
# if !defined( BOOST_WINDOWS_API )
std::string system_error_category::message( int ev ) const
{
return posix_category.message( ev );
}
# else
// TODO: // TODO:
//Some quick notes on the implementation (sorry for the noise if //Some quick notes on the implementation (sorry for the noise if
@ -133,8 +337,7 @@ namespace
// //
//Cheers, //Cheers,
//Chris //Chris
std::string system_error_category::message( int ev ) const
std::string windows_md( const error_code & ec )
{ {
LPVOID lpMsgBuf; LPVOID lpMsgBuf;
::FormatMessageA( ::FormatMessageA(
@ -142,7 +345,7 @@ namespace
FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_FROM_SYSTEM |
FORMAT_MESSAGE_IGNORE_INSERTS, FORMAT_MESSAGE_IGNORE_INSERTS,
NULL, NULL,
ec.value(), ev,
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), // Default language MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), // Default language
(LPSTR) &lpMsgBuf, (LPSTR) &lpMsgBuf,
0, 0,
@ -153,185 +356,31 @@ namespace
while ( str.size() while ( str.size()
&& (str[str.size()-1] == '\n' || str[str.size()-1] == '\r') ) && (str[str.size()-1] == '\n' || str[str.size()-1] == '\r') )
str.erase( str.size()-1 ); str.erase( str.size()-1 );
if ( str.size() && str[str.size()-1] == '.' )
{ str.erase( str.size()-1 ); }
return str; return str;
} }
wstring_t windows_wmd( const error_code & ec )
{
LPVOID lpMsgBuf;
::FormatMessageW(
FORMAT_MESSAGE_ALLOCATE_BUFFER |
FORMAT_MESSAGE_FROM_SYSTEM |
FORMAT_MESSAGE_IGNORE_INSERTS,
NULL,
ec.value(),
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), // Default language
(LPWSTR) &lpMsgBuf,
0,
NULL
);
wstring_t str( static_cast<LPCWSTR>(lpMsgBuf) );
::LocalFree( lpMsgBuf ); // free the buffer
while ( str.size()
&& (str[str.size()-1] == L'\n' || str[str.size()-1] == L'\r') )
str.erase( str.size()-1 );
return str;
}
#endif
int errno_ed( const error_code & ec ) { return ec.value(); }
std::string errno_md( const error_code & ec )
{
// strerror_r is preferred because it is always thread safe,
// however, we fallback to strerror in certain cases because:
// -- Windows doesn't provide strerror_r.
// -- HP and Sundo provide strerror_r on newer systems, but there is
// no way to tell if is available at runtime and in any case their
// versions of strerror are thread safe anyhow.
// -- Linux only sometimes provides strerror_r.
// -- Tru64 provides strerror_r only when compiled -pthread.
// -- VMS doesn't provide strerror_r, but on this platform, strerror is
// thread safe.
# if defined(BOOST_WINDOWS_API) || defined(__hpux) || defined(__sun)\
|| (defined(__linux) && (!defined(__USE_XOPEN2K) || defined(BOOST_SYSTEM_USE_STRERROR)))\
|| (defined(__osf__) && !defined(_REENTRANT))\
|| (defined(__vms))
const char * c_str = std::strerror( ec.value() );
return std::string( c_str ? c_str : "EINVAL" );
# else
char buf[64];
char * bp = buf;
std::size_t sz = sizeof(buf);
# if defined(__CYGWIN__) || defined(__USE_GNU)
// Oddball version of strerror_r
const char * c_str = strerror_r( ec.value(), bp, sz );
return std::string( c_str ? c_str : "EINVAL" );
# else
// POSIX version of strerror_r
int result;
for (;;)
{
// strerror_r returns 0 on success, otherwise ERANGE if buffer too small,
// EINVAL if ec.value() not a valid error number
if ( (result = strerror_r( ec.value(), bp, sz )) == 0 )
break;
else
{
# if defined(__linux)
// Linux strerror_r returns -1 on error, with error number in errno
result = errno;
# endif
if ( result != ERANGE ) break;
if ( sz > sizeof(buf) ) std::free( bp );
sz *= 2;
if ( (bp = static_cast<char*>(std::malloc( sz ))) == 0 )
return std::string( "ENOMEM" );
}
}
try
{
std::string msg( ( result == EINVAL ) ? "EINVAL" : bp );
if ( sz > sizeof(buf) ) std::free( bp );
sz = 0;
return msg;
}
catch(...)
{
if ( sz > sizeof(buf) ) std::free( bp );
throw;
}
# endif
# endif # endif
}
wstring_t errno_wmd( const error_code & ec )
{
// TODO: Implement this:
assert( 0 && "sorry, not implemented yet" );
wstring_t str;
return str;
}
struct decoder_element
{
errno_decoder ed;
message_decoder md;
wmessage_decoder wmd;
decoder_element( errno_decoder ed_,
message_decoder md_, wmessage_decoder wmd_ )
: ed(ed_), md(md_), wmd(wmd_) {}
decoder_element() : ed(0), md(0), wmd(0) {}
};
typedef std::vector< decoder_element > decoder_vec_type;
decoder_vec_type & decoder_vec()
{
static const decoder_element init_decoders[] =
#ifdef BOOST_WINDOWS_API
{ decoder_element( errno_ed, errno_md, errno_wmd ),
decoder_element( windows_ed, windows_md, windows_wmd) };
#else
{ decoder_element( errno_ed, errno_md, errno_wmd ) };
#endif
static decoder_vec_type dv( init_decoders,
init_decoders + sizeof(init_decoders)/sizeof(decoder_element));
return dv;
}
} // unnamed namespace } // unnamed namespace
namespace boost namespace boost
{ {
namespace system namespace system
{ {
error_category error_code::new_category(
errno_decoder ed, message_decoder md, wmessage_decoder wmd )
{
decoder_vec().push_back( decoder_element( ed, md, wmd ) );
return error_category( static_cast<value_type>(decoder_vec().size()) - 1 );
}
bool error_code::get_decoders( error_category cat, BOOST_SYSTEM_DECL const error_category & posix_category
errno_decoder & ed, message_decoder & md, wmessage_decoder & wmd ) = posix_category_const;
{
if ( cat.value() < decoder_vec().size() )
{
ed = decoder_vec()[cat.value()].ed;
md = decoder_vec()[cat.value()].md;
wmd = decoder_vec()[cat.value()].wmd;
return true;
}
return false;
}
int error_code::to_errno() const BOOST_SYSTEM_DECL const error_category & system_category
{ = system_category_const;
return (m_category.value() < decoder_vec().size()
&& decoder_vec()[m_category.value()].ed)
? decoder_vec()[m_category.value()].ed( *this )
: EOTHER;
}
std::string error_code::message() const // deprecated synonyms
{ BOOST_SYSTEM_DECL const error_category & errno_ecat
return (m_category.value() < decoder_vec().size() = posix_category_const;
&& decoder_vec()[m_category.value()].md)
? decoder_vec()[m_category.value()].md( *this )
: std::string( "API error" );
}
wstring_t error_code::wmessage() const BOOST_SYSTEM_DECL const error_category & native_ecat
{ = system_category_const;
return (m_category.value() < decoder_vec().size()
&& decoder_vec()[m_category.value()].wmd)
? decoder_vec()[m_category.value()].wmd( *this )
: wstring_t( L"API error" );
}
} // namespace system } // namespace system
} // namespace boost } // namespace boost

3
test/Jamfile.v2
View File

@ -38,4 +38,7 @@ project
: : : <define>BOOST_SYSTEM_DYN_LINK : : : <define>BOOST_SYSTEM_DYN_LINK
: system_error_test_dll : system_error_test_dll
] ]
[ run header_only_test.cpp
: : : <runtime-link>static <link>static
]
; ;

194
test/error_code_test.cpp
View File

@ -10,7 +10,7 @@
//----------------------------------------------------------------------------// //----------------------------------------------------------------------------//
// VC++ 8.0 warns on usage of certain Standard Library and API functions that // VC++ 8.0 warns on usage of certain Standard Library and API functions that
// can be cause buffer overruns or other possible security issues if misused. // can cause buffer overruns or other possible security issues if misused.
// See http://msdn.microsoft.com/msdnmag/issues/05/05/SafeCandC/default.aspx // See http://msdn.microsoft.com/msdnmag/issues/05/05/SafeCandC/default.aspx
// But the wording of the warning is misleading and unsettling, there are no // But the wording of the warning is misleading and unsettling, there are no
// portable alternative functions, and VC++ 8.0's own libraries use the // portable alternative functions, and VC++ 8.0's own libraries use the
@ -20,6 +20,11 @@
#include <boost/test/minimal.hpp> #include <boost/test/minimal.hpp>
#include <boost/system/error_code.hpp> #include <boost/system/error_code.hpp>
#include <iostream>
#include <sstream>
#include <string>
#include <cstring>
#include <boost/cerrno.hpp>
// Although using directives are not the best programming practice, testing // Although using directives are not the best programming practice, testing
// with a boost::system using directive increases use scenario coverage. // with a boost::system using directive increases use scenario coverage.
@ -27,86 +32,175 @@ using namespace boost::system;
# if defined( BOOST_WINDOWS_API ) # if defined( BOOST_WINDOWS_API )
# include "winerror.h" # include "winerror.h"
# include <boost/cerrno.hpp> # define BOOST_ACCESS_ERROR_MACRO ERROR_ACCESS_DENIED
# elif defined( BOOST_POSIX_API )
# define BOOST_ACCESS_ERROR_MACRO EACCES
# else
# error "Only supported for POSIX and Windows"
# endif # endif
namespace
{
void check_ostream( error_code ec, const char * expected )
{
std::stringstream ss;
std::string s;
ss << ec;
ss >> s;
BOOST_CHECK( s == expected );
}
}
// test_main ---------------------------------------------------------------// // test_main ---------------------------------------------------------------//
// TODO: supply a build jam file // TODO: add hash_value tests
// TODO: supply a test jam file
// TODO: same for bjam v2
// TODO: add message decoder tests
int test_main( int, char ** ) int test_main( int, char ** )
{ {
error_code ec;
error_code ec_0_native( 0, native_ecat );
error_code ec_0_errno( 0, errno_ecat );
error_code ec_1_native( 1, native_ecat );
error_code ec_1_errno( 1, errno_ecat );
std::cout << "General tests...\n";
// unit tests:
BOOST_CHECK( posix_category == posix_category );
BOOST_CHECK( system_category == system_category );
BOOST_CHECK( posix_category != system_category );
BOOST_CHECK( system_category != posix_category );
BOOST_CHECK( posix_category < system_category );
BOOST_CHECK( !(system_category < posix_category) );
error_code ec;
error_condition dec;
BOOST_CHECK( !ec ); BOOST_CHECK( !ec );
BOOST_CHECK( ec.value() == 0 ); BOOST_CHECK( ec.value() == 0 );
BOOST_CHECK( ec.to_errno() == 0 ); dec = ec.default_error_condition();
BOOST_CHECK( dec.value() == 0 );
BOOST_CHECK( dec.category() == posix_category );
BOOST_CHECK( ec == posix::success );
BOOST_CHECK( ec.category() == system_category );
BOOST_CHECK( std::strcmp( ec.category().name(), "system") == 0 );
BOOST_CHECK( !(ec < error_code( 0, system_category )) );
BOOST_CHECK( !(error_code( 0, system_category ) < ec) );
BOOST_CHECK( ec < error_code( 1, system_category ) );
BOOST_CHECK( !(error_code( 1, system_category ) < ec) );
BOOST_CHECK( !ec_0_native ); error_code ec_0_system( 0, system_category );
BOOST_CHECK( ec_0_native.value() == 0 ); BOOST_CHECK( !ec_0_system );
BOOST_CHECK( ec_0_native.to_errno() == 0 ); BOOST_CHECK( ec_0_system.value() == 0 );
dec = ec_0_system.default_error_condition();
BOOST_CHECK( dec.value() == 0 );
BOOST_CHECK( dec.category() == posix_category );
BOOST_CHECK( ec_0_system == posix::success );
BOOST_CHECK( ec_0_system.category() == system_category );
BOOST_CHECK( std::strcmp( ec_0_system.category().name(), "system") == 0 );
check_ostream( ec_0_system, "system:0" );
BOOST_CHECK( !ec_0_errno ); BOOST_CHECK( ec_0_system == ec );
BOOST_CHECK( ec_0_errno.value() == 0 );
BOOST_CHECK( ec_0_errno.to_errno() == 0 );
BOOST_CHECK( ec == ec_0_errno );
BOOST_CHECK( native_ecat != errno_ecat || ec_0_native == ec_0_errno );
BOOST_CHECK( native_ecat == errno_ecat || ec_0_native != ec_0_errno );
BOOST_CHECK( ec_1_native ); error_code ec_1_system( 1, system_category );
BOOST_CHECK( ec_1_native.value() == 1 ); BOOST_CHECK( ec_1_system );
BOOST_CHECK( ec_1_native.value() != 0 ); BOOST_CHECK( ec_1_system.value() == 1 );
BOOST_CHECK( ec_1_native.to_errno() != 0 ); BOOST_CHECK( ec_1_system.value() != 0 );
BOOST_CHECK( ec != ec_1_native ); BOOST_CHECK( ec != ec_1_system );
BOOST_CHECK( ec_0_native != ec_1_native ); BOOST_CHECK( ec_0_system != ec_1_system );
BOOST_CHECK( ec_0_errno != ec_1_native ); check_ostream( ec_1_system, "system:1" );
BOOST_CHECK( ec_1_errno ); ec = error_code( BOOST_ACCESS_ERROR_MACRO, system_category );
BOOST_CHECK( ec_1_errno.value() == 1 ); BOOST_CHECK( ec );
BOOST_CHECK( ec_1_errno.to_errno() == 1 ); BOOST_CHECK( ec.value() == BOOST_ACCESS_ERROR_MACRO );
BOOST_CHECK( ec_1_errno.to_errno() != 0 ); dec = ec.default_error_condition();
BOOST_CHECK( ec != ec_1_errno ); BOOST_CHECK( dec.value() == static_cast<int>(posix::permission_denied) );
BOOST_CHECK( ec_0_native != ec_1_errno ); BOOST_CHECK( dec.category() == posix_category );
BOOST_CHECK( ec_0_errno != ec_1_errno ); BOOST_CHECK( dec == error_condition( posix::permission_denied, posix_category ) );
BOOST_CHECK( dec == posix::permission_denied );
BOOST_CHECK( posix::permission_denied == dec );
BOOST_CHECK( ec == posix::permission_denied );
BOOST_CHECK( ec.category() == system_category );
BOOST_CHECK( std::strcmp( ec.category().name(), "system") == 0 );
// test the explicit make_error_code conversion for posix
ec = make_error_code( posix::bad_message );
BOOST_CHECK( ec );
BOOST_CHECK( ec == posix::bad_message );
BOOST_CHECK( posix::bad_message == ec );
BOOST_CHECK( ec != posix::permission_denied );
BOOST_CHECK( posix::permission_denied != ec );
BOOST_CHECK( ec.category() == posix_category );
// test the deprecated predefined error_category synonyms
BOOST_CHECK( &system_category == &native_ecat );
BOOST_CHECK( &posix_category == &errno_ecat );
BOOST_CHECK( system_category == native_ecat );
BOOST_CHECK( posix_category == errno_ecat );
#ifdef BOOST_WINDOWS_API #ifdef BOOST_WINDOWS_API
BOOST_CHECK( ec != ec_0_native ); std::cout << "Windows tests...\n";
// these tests probe the Windows posix decoder
// these tests probe the Windows to_errno decoder
// test the first entry in the decoder table: // test the first entry in the decoder table:
ec = error_code( ERROR_FILE_NOT_FOUND, native_ecat ); ec = error_code( ERROR_FILE_NOT_FOUND, system_category );
BOOST_CHECK( ec.value() == ERROR_FILE_NOT_FOUND ); BOOST_CHECK( ec.value() == ERROR_FILE_NOT_FOUND );
BOOST_CHECK( ec.to_errno() == ENOENT ); BOOST_CHECK( ec == posix::no_such_file_or_directory );
BOOST_CHECK( ec.default_error_condition().value() == posix::no_such_file_or_directory );
BOOST_CHECK( ec.default_error_condition().category() == posix_category );
// test the second entry in the decoder table: // test the second entry in the decoder table:
ec = error_code( ERROR_PATH_NOT_FOUND, native_ecat ); ec = error_code( ERROR_PATH_NOT_FOUND, system_category );
BOOST_CHECK( ec.value() == ERROR_PATH_NOT_FOUND ); BOOST_CHECK( ec.value() == ERROR_PATH_NOT_FOUND );
BOOST_CHECK( ec.to_errno() == ENOENT ); BOOST_CHECK( ec == posix::no_such_file_or_directory );
BOOST_CHECK( ec.default_error_condition().value() == posix::no_such_file_or_directory );
BOOST_CHECK( ec.default_error_condition().category() == posix_category );
// test the third entry in the decoder table: // test the third entry in the decoder table:
ec = error_code( ERROR_ACCESS_DENIED, native_ecat ); ec = error_code( ERROR_ACCESS_DENIED, system_category );
BOOST_CHECK( ec.value() == ERROR_ACCESS_DENIED ); BOOST_CHECK( ec.value() == ERROR_ACCESS_DENIED );
BOOST_CHECK( ec.to_errno() == EACCES ); BOOST_CHECK( ec == posix::permission_denied );
BOOST_CHECK( ec.default_error_condition().value() == posix::permission_denied );
BOOST_CHECK( ec.default_error_condition().category() == posix_category );
// test the last regular entry in the decoder table: // test the last regular entry in the decoder table:
ec = error_code( ERROR_WRITE_PROTECT, native_ecat ); ec = error_code( ERROR_WRITE_PROTECT, system_category );
BOOST_CHECK( ec.value() == ERROR_WRITE_PROTECT ); BOOST_CHECK( ec.value() == ERROR_WRITE_PROTECT );
BOOST_CHECK( ec.to_errno() == EROFS ); BOOST_CHECK( ec == posix::permission_denied );
BOOST_CHECK( ec.default_error_condition().value() == posix::permission_denied );
BOOST_CHECK( ec.default_error_condition().category() == posix_category );
// test not-in-table condition: // test not-in-table condition:
ec = error_code( 1234567890, native_ecat ); ec = error_code( 1234567890, system_category );
BOOST_CHECK( ec.value() == 1234567890 ); BOOST_CHECK( ec.value() == 1234567890 );
BOOST_CHECK( ec.to_errno() == EOTHER ); BOOST_CHECK( ec.default_error_condition().value() == 1234567890 );
BOOST_CHECK( ec.default_error_condition().category() == system_category );
#else // POSIX
std::cout << "POSIX tests...\n";
ec = error_code( EACCES, system_category );
BOOST_CHECK( ec == error_code( posix::permission_denied, system_category ) );
BOOST_CHECK( error_code( posix::permission_denied, system_category ) == ec );
BOOST_CHECK( ec == posix::permission_denied );
BOOST_CHECK( posix::permission_denied == ec );
BOOST_CHECK( ec.default_error_condition().value() == posix::permission_denied );
BOOST_CHECK( ec.default_error_condition().category() == posix_category );
# ifdef __CYGWIN__
std::cout << "Cygwin tests...\n";
ec = cygwin::no_package;
BOOST_CHECK( ec == cygwin::no_package );
BOOST_CHECK( ec == error_code( ENOPKG, system_category ) );
BOOST_CHECK( ec == error_code( cygwin::no_package, system_category ) );
BOOST_CHECK( ec.default_error_condition().category() == system_category );
# elif defined(linux) || defined(__linux) || defined(__linux__)
std::cout << "Linux tests...\n";
ec = Linux::dot_dot_error;
BOOST_CHECK( ec == Linux::dot_dot_error );
BOOST_CHECK( ec == error_code( EDOTDOT, system_category ) );
BOOST_CHECK( ec == error_code( Linux::dot_dot_error, system_category ) );
BOOST_CHECK( ec.default_error_condition().category() == posix_category );
# endif
#else
BOOST_CHECK( ec == ec_0_native );
#endif #endif
return 0; return 0;

433
test/error_code_user_test.cpp
View File

@ -8,85 +8,384 @@
// See library home page at http://www.boost.org/libs/system // See library home page at http://www.boost.org/libs/system
// ------------------------------------------------------------------------ // // ------------------------------------------------------------------------ //
// This code demonstrates creation and use of a new category of error codes.
// The motivation was a Boost posting by Christopher Kohlhoff on June 28, 2006. // This program demonstrates creation and use of new categories of error
// codes. Several scenarios are demonstrated and tested.
// Motivation was a Boost posting by Christopher Kohlhoff on June 28, 2006.
#include <boost/system/error_code.hpp> #include <boost/system/error_code.hpp>
#include <boost/cerrno.hpp> #include <boost/cerrno.hpp>
#include <string>
// ------------------------------------------------------------------------ // #include <cstdio>
// header asio.hpp
#define BOO_BOO 12345 // this could also be a constant; a macro is used for
// illustration because many older API's define errors
// via macro.
namespace boost
{
namespace asio
{
// asio declares have its own error_category:
extern system::error_category asio_error;
namespace error
{
extern boost::system::error_code boo_boo;
}
void boo_boo( boost::system::error_code & ec );
}
}
// ------------------------------------------------------------------------ //
// implementation file asio.cpp:
namespace boost
{
namespace asio
{
system::error_category asio_error = system::error_code::new_category();
namespace error
{
boost::system::error_code boo_boo( BOO_BOO, asio_error );
}
// function sets ec arg to boo_boo
void boo_boo( boost::system::error_code & ec )
{
ec = error::boo_boo;
}
}
}
// ------------------------------------------------------------------------ //
// a user program:
// #include <asio.hpp>
#include <boost/test/minimal.hpp> #include <boost/test/minimal.hpp>
#ifdef BOOST_POSIX_API
# include <sys/stat.h>
#else
# include <windows.h>
#endif
// ------------------------------------------------------------------------ //
// Library 1: User function passes through an error code from the
// operating system.
boost::system::error_code my_mkdir( const std::string & path )
{
return boost::system::error_code(
# ifdef BOOST_POSIX_API
::mkdir( path.c_str(), S_IRWXU|S_IRWXG|S_IROTH|S_IXOTH ) == 0 ? 0 : errno,
# else
::CreateDirectoryA( path.c_str(), 0 ) != 0 ? 0 : ::GetLastError(),
# endif
boost::system::system_category );
}
// ------------------------------------------------------------------------ //
// Library 2: User function passes through errno from the C-runtime.
#include <cstdio>
boost::system::error_code my_remove( const std::string & path )
{
return boost::system::error_code(
::remove( path.c_str() ) == 0 ? 0 : errno,
boost::system::posix_category ); // OK for both Windows and POSIX
// Alternatively, could use posix_category
// on Windows and system_category on
// POSIX-based systems.
}
// ------------------------------------------------------------------------ //
// Library 3: Library uses enum to identify library specific errors.
// This particular example is for a library within the parent namespace. For
// an example of a library not within the parent namespace, see library 4.
// header lib3.hpp:
namespace boost
{
namespace lib3
{
// lib3 has its own error_category:
extern const boost::system::error_category & lib3_error_category;
enum error
{
boo_boo=123,
big_boo_boo
};
}
namespace system
{
template<> struct is_error_code_enum<boost::lib3::error>
{ static const bool value = true; };
inline error_code make_error_code(boost::lib3::error e)
{ return error_code(e,boost::lib3::lib3_error_category); }
}
}
// implementation file lib3.cpp:
// #include <lib3.hpp>
namespace boost
{
namespace lib3
{
class lib3_error_category_imp : public boost::system::error_category
{
public:
const char * name() const
{
return "lib3";
}
boost::system::error_condition default_error_condition( int ev ) const
{
return ev == boo_boo
? boost::system::error_condition( boost::system::posix::io_error,
boost::system::posix_category )
: boost::system::error_condition( ev,
boost::lib3::lib3_error_category );
}
std::string message( int ev ) const
{
if ( ev == boo_boo ) return std::string("boo boo");
if ( ev == big_boo_boo ) return std::string("big boo boo");
return std::string("unknown error");
}
};
const lib3_error_category_imp lib3_error_category_const;
const boost::system::error_category & lib3_error_category
= lib3_error_category_const;
}
}
// ------------------------------------------------------------------------ //
// Library 4: Library uses const error_code's to identify library specific
// errors.
// This particular example is for a library not within the parent namespace.
// For an example of a library within the parent namespace, see library 3.
// header lib4.hpp:
namespace lib4
{
// lib4 has its own error_category:
extern const boost::system::error_category & lib4_error_category;
extern const boost::system::error_code boo_boo;
extern const boost::system::error_code big_boo_boo;
}
// implementation file lib4.cpp:
// #include <lib4.hpp>
namespace lib4
{
class lib4_error_category_imp : public boost::system::error_category
{
public:
const char * name() const
{
return "lib4";
}
boost::system::error_condition default_error_condition( int ev ) const
{
return ev == boo_boo.value()
? boost::system::error_condition( boost::system::posix::io_error,
boost::system::posix_category )
: boost::system::error_condition( ev, lib4::lib4_error_category );
}
std::string message( int ev ) const
{
if ( ev == boo_boo.value() ) return std::string("boo boo");
if ( ev == big_boo_boo.value() ) return std::string("big boo boo");
return std::string("unknown error");
}
};
const lib4_error_category_imp lib4_error_category_const;
const boost::system::error_category & lib4_error_category
= lib4_error_category_const;
const boost::system::error_code boo_boo( 456, lib4_error_category );
const boost::system::error_code big_boo_boo( 789, lib4_error_category );
}
// ------------------------------------------------------------------------ //
// Chris Kolhoff's Test3, modified to work with error_code.hpp
// Test3
// =====
// Define error classes to check for success, permission_denied and
// out_of_memory, but add additional mappings for a user-defined error category.
//
//namespace test3 {
// enum user_err
// {
// user_success = 0,
// user_permission_denied,
// user_out_of_memory
// };
//
// class user_error_category_imp : public boost::system::error_category
// {
// public:
// const std::string & name() const
// {
// static std::string s( "test3" );
// return s;
// }
//
// boost::system::error_code portable_error_code( int ev ) const
// {
// switch (ev)
// {
// case user_success:
// return boost::system::error_code(boost::system::posix::success, boost::system::posix_category);
// case user_permission_denied:
// return boost::system::error_code(boost::system::posix::permission_denied, boost::system::posix_category);
// case user_out_of_memory:
// return boost::system::error_code(boost::system::posix::not_enough_memory, boost::system::posix_category);
// default:
// break;
// }
// return boost::system::error_code(boost::system::posix::no_posix_equivalent, boost::system::posix_category);
// }
//
// };
//
// const user_error_category_imp user_error_category_const;
//
// const boost::system::error_category & user_error_category
// = user_error_category_const;
//
// inline boost::system::error_code make_error_code(user_err e)
// {
// return boost::system::error_code(e, user_error_category);
// }
//
// // test code
//
// void check_success(const boost::system::error_code& ec, bool expect)
// {
// BOOST_CHECK( (ec == boost::system::posix::success) == expect );
// if (ec == boost::system::posix::success)
// std::cout << "yes... " << (expect ? "ok" : "fail") << '\n';
// else
// std::cout << "no... " << (expect ? "fail" : "ok") << '\n';
// }
//
// void check_permission_denied(const boost::system::error_code& ec, bool expect)
// {
// BOOST_CHECK( (ec == boost::system::posix::permission_denied) == expect );
// if (ec == boost::system::posix::permission_denied)
// std::cout << "yes... " << (expect ? "ok" : "fail") << '\n';
// else
// std::cout << "no... " << (expect ? "fail" : "ok") << '\n';
// }
//
// void check_out_of_memory(const boost::system::error_code& ec, bool expect)
// {
// BOOST_CHECK( (ec == boost::system::posix::not_enough_memory) == expect );
// if (ec == boost::system::posix::not_enough_memory)
// std::cout << "yes... " << (expect ? "ok" : "fail") << '\n';
// else
// std::cout << "no... " << (expect ? "fail" : "ok") << '\n';
// }
//
// void run()
// {
// printf("Test3\n");
// printf("=====\n");
// boost::system::error_code ec;
// check_success(ec, true);
// check_success(boost::system::posix::success, true);
// check_success(boost::system::posix::permission_denied, false);
// check_success(boost::system::posix::not_enough_memory, false);
// check_success(user_success, true);
// check_success(user_permission_denied, false);
// check_success(user_out_of_memory, false);
// check_permission_denied(ec, false);
// check_permission_denied(boost::system::posix::success, false);
// check_permission_denied(boost::system::posix::permission_denied, true);
// check_permission_denied(boost::system::posix::not_enough_memory, false);
// check_permission_denied(user_success, false);
// check_permission_denied(user_permission_denied, true);
// check_permission_denied(user_out_of_memory, false);
// check_out_of_memory(ec, false);
// check_out_of_memory(boost::system::posix::success, false);
// check_out_of_memory(boost::system::posix::permission_denied, false);
// check_out_of_memory(boost::system::posix::not_enough_memory, true);
// check_out_of_memory(user_success, false);
// check_out_of_memory(user_permission_denied, false);
// check_out_of_memory(user_out_of_memory, true);
//
//# ifdef BOOST_WINDOWS_API
// check_success(boost::system::windows::success, true);
// check_success(boost::system::windows::access_denied, false);
// check_success(boost::system::windows::not_enough_memory, false);
// check_permission_denied(boost::system::windows::success, false);
// check_permission_denied(boost::system::windows::access_denied, true);
// check_permission_denied(boost::system::windows::not_enough_memory, false);
// check_out_of_memory(boost::system::windows::success, false);
// check_out_of_memory(boost::system::windows::access_denied, false);
// check_out_of_memory(boost::system::windows::not_enough_memory, true);
//# endif
//
// printf("\n");
// }
//
//} // namespace test3
// ------------------------------------------------------------------------ //
int test_main( int, char *[] ) int test_main( int, char *[] )
{ {
boost::system::error_code ec; boost::system::error_code ec;
boost::asio::boo_boo( ec );
// Library 1 tests:
ec = my_mkdir( "/no-such-file-or-directory/will-not-succeed" );
std::cout << "ec.value() is " << ec.value() << '\n';
BOOST_CHECK( ec ); BOOST_CHECK( ec );
BOOST_CHECK( ec == boost::asio::error::boo_boo ); BOOST_CHECK( ec == boost::system::posix::no_such_file_or_directory );
BOOST_CHECK( ec.value() == BOO_BOO ); BOOST_CHECK( ec.category() == boost::system::system_category );
BOOST_CHECK( ec.category() == boost::asio::asio_error );
// a real user can't rely on the value of an error_category object's value, // Library 2 tests:
// but in this test program that value is known, so test for it.
BOOST_CHECK( ec.category().value() == boost::system::native_ecat.value()+1 ); ec = my_remove( "/no-such-file-or-directory" );
std::cout << "ec.value() is " << ec.value() << '\n';
BOOST_CHECK( ec );
BOOST_CHECK( ec == boost::system::posix::no_such_file_or_directory );
BOOST_CHECK( ec.category() == boost::system::posix_category );
// Library 3 tests:
ec = boost::lib3::boo_boo;
std::cout << "ec.value() is " << ec.value() << '\n';
BOOST_CHECK( ec );
BOOST_CHECK( ec == boost::lib3::boo_boo );
BOOST_CHECK( ec.value() == boost::lib3::boo_boo );
BOOST_CHECK( ec.category() == boost::lib3::lib3_error_category );
BOOST_CHECK( ec == boost::system::posix::io_error );
boost::system::error_code ec3( boost::lib3::boo_boo+100,
boost::lib3::lib3_error_category );
BOOST_CHECK( ec3.category() == boost::lib3::lib3_error_category );
BOOST_CHECK( ec3.default_error_condition().category()
== boost::lib3::lib3_error_category );
// Library 4 tests:
ec = lib4::boo_boo;
std::cout << "ec.value() is " << ec.value() << '\n';
BOOST_CHECK( ec );
BOOST_CHECK( ec == lib4::boo_boo );
BOOST_CHECK( ec.value() == lib4::boo_boo.value() );
BOOST_CHECK( ec.category() == lib4::lib4_error_category );
BOOST_CHECK( ec == boost::system::posix::io_error );
boost::system::error_code ec4( lib4::boo_boo.value()+100,
lib4::lib4_error_category );
BOOST_CHECK( ec4.default_error_condition().category()
== lib4::lib4_error_category );
// Test 3
//test3::run();
// asio did not supply decoders, so test the defaults
BOOST_CHECK( ec.to_errno() == EOTHER );
BOOST_CHECK( ec.message() == "API error" );
BOOST_CHECK( ec.wmessage() == L"API error" );
return 0; return 0;
} }

31
test/header_only_test.cpp Normal file
View File

@ -0,0 +1,31 @@
// error_code_test.cpp -----------------------------------------------------//
// Copyright Beman Dawes 2007
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
// See library home page at http://www.boost.org/libs/system
//----------------------------------------------------------------------------//
// VC++ 8.0 warns on usage of certain Standard Library and API functions that
// can cause buffer overruns or other possible security issues if misused.
// See http://msdn.microsoft.com/msdnmag/issues/05/05/SafeCandC/default.aspx
// But the wording of the warning is misleading and unsettling, there are no
// portable altersystem functions, and VC++ 8.0's own libraries use the
// functions in question. So turn off the warnings.
#define _CRT_SECURE_NO_DEPRECATE
#define _SCL_SECURE_NO_DEPRECATE
#define BOOST_ERROR_CODE_HEADER_ONLY
#include <boost/test/minimal.hpp>
#include <boost/system/error_code.hpp>
int test_main( int, char*[] )
{
boost::system::error_code ec( 0, boost::system::system_category );
return 0;
}

44
test/system_error_test.cpp
View File

@ -10,7 +10,7 @@
//----------------------------------------------------------------------------// //----------------------------------------------------------------------------//
// VC++ 8.0 warns on usage of certain Standard Library and API functions that // VC++ 8.0 warns on usage of certain Standard Library and API functions that
// can be cause buffer overruns or other possible security issues if misused. // can cause buffer overruns or other possible security issues if misused.
// See http://msdn.microsoft.com/msdnmag/issues/05/05/SafeCandC/default.aspx // See http://msdn.microsoft.com/msdnmag/issues/05/05/SafeCandC/default.aspx
// But the wording of the warning is misleading and unsettling, there are no // But the wording of the warning is misleading and unsettling, there are no
// portable alternative functions, and VC++ 8.0's own libraries use the // portable alternative functions, and VC++ 8.0's own libraries use the
@ -23,24 +23,23 @@
#include <iostream> #include <iostream>
#ifdef BOOST_WINDOWS_API #ifdef BOOST_WINDOWS_API
# include <winerror.h> #include <winerror.h>
#endif #endif
using boost::system::system_error; using boost::system::system_error;
using boost::system::error_code; using boost::system::error_code;
using boost::system::errno_ecat; using boost::system::system_category;
using boost::system::no_message;
#define TEST(x,v,w) test(#x,x,v,w) #define TEST(x,v,w) test(#x,x,v,w)
namespace namespace
{ {
void test( const char * desc, const system_error & ex, void test( const char * desc, const system_error & ex,
error_code::value_type v, const char * str ) int v, const char * str )
{ {
std::cout << "test " << desc << "\n what() returns \"" << ex.what() << "\"\n"; std::cout << "test " << desc << "\n what() returns \"" << ex.what() << "\"\n";
BOOST_CHECK( ex.code().value() == v ); BOOST_CHECK( ex.code().value() == v );
BOOST_CHECK( ex.code().category() == errno_ecat ); BOOST_CHECK( ex.code().category() == system_category );
# ifdef BOOST_WINDOWS_API # ifdef BOOST_WINDOWS_API
BOOST_CHECK( std::string( ex.what() ) == str ); BOOST_CHECK( std::string( ex.what() ) == str );
if ( std::string( ex.what() ) != str ) if ( std::string( ex.what() ) != str )
@ -56,29 +55,22 @@ int test_main( int, char *[] )
{ {
// all combinations of constructors: // all combinations of constructors:
system_error se_0( error_code(0, errno_ecat) ); system_error se_0_m( error_code(0, system_category), "se_0_m" );
system_error se_1( 1, errno_ecat ); system_error se_1_m( 1, system_category, "se_1_m" );
system_error se_0_m( error_code(0, errno_ecat), "se_0_m" ); system_error se_0_nm( error_code(0, system_category), "" );
system_error se_1_m( 1, errno_ecat, "se_1_m" ); system_error se_1_nm( 1, system_category, "" );
system_error se_0_nm( error_code(0, errno_ecat), "" ); system_error se_0_nmx( error_code(0, system_category), "" );
system_error se_1_nm( 1, errno_ecat, "" ); system_error se_1_nmx( 1, system_category, "" );
system_error se_0_m_im( error_code(0, errno_ecat), "se_0_m_im", no_message ); system_error se_1u_m( uvalue, system_category, "se_1u_m" );
system_error se_1_m_im( 1, errno_ecat, "se_1_m_im", no_message );
system_error se_0_nm_im( error_code(0, errno_ecat), "", no_message );
system_error se_1_nm_im( 1, errno_ecat, "", no_message );
system_error se_1u_m( uvalue, errno_ecat, "se_1u_m" );
TEST( se_0, 0, "" );
TEST( se_1, 1, "Operation not permitted" );
TEST( se_0_m, 0, "se_0_m" ); TEST( se_0_m, 0, "se_0_m" );
TEST( se_1_m, 1, "se_1_m: Operation not permitted" ); TEST( se_1_m, 1, "se_1_m: Incorrect function" );
TEST( se_0_nm, 0, "" ); TEST( se_0_nm, 0, "" );
TEST( se_1_nm, 1, "Operation not permitted" ); TEST( se_1_nm, 1, "Incorrect function" );
TEST( se_0_m_im, 0, "se_0_m_im" ); TEST( se_0_nmx, 0, "" );
TEST( se_1_m_im, 1, "se_1_m_im" ); TEST( se_1_nmx, 1, "Incorrect function" );
TEST( se_0_nm_im, 0, "" ); TEST( se_1u_m, 1, "se_1u_m: Incorrect function" );
TEST( se_1_nm_im, 1, "" );
TEST( se_1u_m, 1, "se_1u_m: Operation not permitted" );
return 0; return 0;
} }