forked from boostorg/system
Add separate headers for system-specific enums, thus reducing coupling. Suggested by Emil Dotchevski.
[SVN r41033]
This commit is contained in:
Beman Dawes
@@ -25,9 +25,9 @@
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// TODO: undef these macros if not already defined
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#include <boost/cerrno.hpp>
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# ifdef BOOST_WINDOWS_API
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# include <winerror.h>
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# endif
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#if !defined(BOOST_POSIX_API) && !defined(BOOST_WINDOWS_API)
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# error BOOST_POSIX_API or BOOST_WINDOWS_API must be defined
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#endif
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#include <boost/config/abi_prefix.hpp> // must be the last #include
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@@ -143,6 +143,39 @@ namespace boost
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template<> struct is_error_condition_enum<posix_error::posix_errno>
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{ static const bool value = true; };
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// ----------------------------------------------------------------------//
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// Operating system specific interfaces --------------------------------//
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// The interface is divided into general and system-specific portions to
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// meet these requirements:
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//
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// * Code calling an operating system API can create an error_code with
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// a single category (system_category), even for POSIX-like operating
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// systems that return some POSIX errno values and some native errno
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// values. This code should not have to pay the cost of distinguishing
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// between categories, since it is not yet known if that is needed.
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//
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// * Users wishing to write system-specific code should be given enums for
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// at least the common error cases.
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//
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// * System specific code should fail at compile time if moved to another
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// operating system.
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// The system specific portions of the interface are located in headers
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// with names reflecting the operating system. For example,
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//
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// <boost/system/cygwin_error.hpp>
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// <boost/system/linux_error.hpp>
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// <boost/system/windows_error.hpp>
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//
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// These headers are effectively empty for compiles on operating systems
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// where they are not applicable.
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// ----------------------------------------------------------------------//
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// class error_category ------------------------------------------------//
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class error_category : public noncopyable
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@@ -448,230 +481,6 @@ namespace boost
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return s;
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}
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// ----------------------------------------------------------------------//
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// Operating system specific interfaces --------------------------------//
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// The interface is divided into general and system-specific portions to
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// meet these requirements:
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//
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// * Code calling an operating system API can create an error_code with
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// a single category (system_category), even for POSIX-like operating
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// systems that return some POSIX errno values and some native errno
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// values. This code should not have to pay the cost of distinguishing
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// between categories, since it is not yet known if that is needed.
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//
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// * Users wishing to write system-specific code should be given enums for
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// at least the common error cases.
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//
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// * System specific code should fail at compile time if moved to another
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// operating system.
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#ifdef BOOST_POSIX_API
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// POSIX-based systems -------------------------------------------------//
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// To construct an error_code after a API error:
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//
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// error_code( errno, system_category )
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// User code should use the portable "posix" enums for POSIX errors; this
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// allows such code to be portable to non-POSIX systems. For the non-POSIX
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// errno values that POSIX-based systems typically provide in addition to
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// POSIX values, use the system specific enums below.
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# ifdef __CYGWIN__
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namespace cygwin_error
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{
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enum cygwin_errno
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{
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no_net = ENONET,
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no_package = ENOPKG,
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no_share = ENOSHARE
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};
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} // namespace cygwin_error
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template<> struct is_error_code_enum<cygwin_error::cygwin_errno>
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{ static const bool value = true; };
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namespace cygwin_error
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{
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inline error_code make_error_code( cygwin_errno e )
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{ return error_code( e, system_category ); }
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}
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# elif defined(linux) || defined(__linux) || defined(__linux__)
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namespace linux_error
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{
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enum linux_errno
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{
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advertise_error = EADV,
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bad_exchange = EBADE,
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bad_file_number = EBADFD,
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bad_font_format = EBFONT,
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bad_request_code = EBADRQC,
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bad_request_descriptor = EBADR,
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bad_slot = EBADSLT,
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channel_range = ECHRNG,
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communication_error = ECOMM,
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dot_dot_error = EDOTDOT,
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exchange_full = EXFULL,
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host_down = EHOSTDOWN,
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is_named_file_type= EISNAM,
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key_expired = EKEYEXPIRED,
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key_rejected = EKEYREJECTED,
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key_revoked = EKEYREVOKED,
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level2_halt= EL2HLT,
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level2_no_syncronized= EL2NSYNC,
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level3_halt = EL3HLT,
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level3_reset = EL3RST,
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link_range = ELNRNG,
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medium_type = EMEDIUMTYPE,
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no_anode= ENOANO,
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no_block_device = ENOTBLK,
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no_csi = ENOCSI,
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no_key = ENOKEY,
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no_medium = ENOMEDIUM,
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no_network = ENONET,
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no_package = ENOPKG,
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not_avail = ENAVAIL,
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not_named_file_type= ENOTNAM,
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not_recoverable = ENOTRECOVERABLE,
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not_unique = ENOTUNIQ,
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owner_dead = EOWNERDEAD,
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protocol_no_supported = EPFNOSUPPORT,
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remote_address_changed = EREMCHG,
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remote_io_error = EREMOTEIO,
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remote_object = EREMOTE,
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restart_needed = ERESTART,
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shared_library_access = ELIBACC,
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shared_library_bad = ELIBBAD,
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shared_library_execute = ELIBEXEC,
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shared_library_max_ = ELIBMAX,
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shared_library_section= ELIBSCN,
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shutdown = ESHUTDOWN,
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socket_type_not_supported = ESOCKTNOSUPPORT,
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srmount_error = ESRMNT,
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stream_pipe_error = ESTRPIPE,
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too_many_references = ETOOMANYREFS,
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too_many_users = EUSERS,
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unattached = EUNATCH,
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unclean = EUCLEAN
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};
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} // namespace linux_error
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# ifndef BOOST_SYSTEM_NO_DEPRECATED
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namespace Linux = linux_error;
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# endif
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template<> struct is_error_code_enum<linux_error::linux_errno>
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{ static const bool value = true; };
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namespace linux_error
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{
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inline error_code make_error_code( linux_errno e )
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{ return error_code( e, system_category ); }
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}
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# endif
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// TODO: Add more POSIX-based operating systems here
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#elif defined(BOOST_WINDOWS_API)
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// Microsoft Windows ---------------------------------------------------//
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// To construct an error_code after a API error:
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//
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// error_code( ::GetLastError(), system_category )
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namespace windows_error
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{
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enum windows_error_code
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{
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success = 0,
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// These names and values are based on Windows winerror.h
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invalid_function = ERROR_INVALID_FUNCTION,
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file_not_found = ERROR_FILE_NOT_FOUND,
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path_not_found = ERROR_PATH_NOT_FOUND,
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too_many_open_files = ERROR_TOO_MANY_OPEN_FILES,
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access_denied = ERROR_ACCESS_DENIED,
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invalid_handle = ERROR_INVALID_HANDLE,
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arena_trashed = ERROR_ARENA_TRASHED,
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not_enough_memory = ERROR_NOT_ENOUGH_MEMORY,
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invalid_block = ERROR_INVALID_BLOCK,
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bad_environment = ERROR_BAD_ENVIRONMENT,
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bad_format = ERROR_BAD_FORMAT,
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invalid_access = ERROR_INVALID_ACCESS,
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outofmemory = ERROR_OUTOFMEMORY,
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invalid_drive = ERROR_INVALID_DRIVE,
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current_directory = ERROR_CURRENT_DIRECTORY,
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not_same_device = ERROR_NOT_SAME_DEVICE,
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no_more_files = ERROR_NO_MORE_FILES,
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write_protect = ERROR_WRITE_PROTECT,
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bad_unit = ERROR_BAD_UNIT,
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not_ready = ERROR_NOT_READY,
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bad_command = ERROR_BAD_COMMAND,
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crc = ERROR_CRC,
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bad_length = ERROR_BAD_LENGTH,
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seek = ERROR_SEEK,
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not_dos_disk = ERROR_NOT_DOS_DISK,
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sector_not_found = ERROR_SECTOR_NOT_FOUND,
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out_of_paper = ERROR_OUT_OF_PAPER,
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write_fault = ERROR_WRITE_FAULT,
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read_fault = ERROR_READ_FAULT,
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gen_failure = ERROR_GEN_FAILURE,
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sharing_violation = ERROR_SHARING_VIOLATION,
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lock_violation = ERROR_LOCK_VIOLATION,
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wrong_disk = ERROR_WRONG_DISK,
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sharing_buffer_exceeded = ERROR_SHARING_BUFFER_EXCEEDED,
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handle_eof = ERROR_HANDLE_EOF,
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handle_disk_full= ERROR_HANDLE_DISK_FULL,
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rem_not_list = ERROR_REM_NOT_LIST,
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dup_name = ERROR_DUP_NAME,
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bad_net_path = ERROR_BAD_NETPATH,
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network_busy = ERROR_NETWORK_BUSY,
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// ...
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file_exists = ERROR_FILE_EXISTS,
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cannot_make = ERROR_CANNOT_MAKE,
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// ...
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broken_pipe = ERROR_BROKEN_PIPE,
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open_failed = ERROR_OPEN_FAILED,
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buffer_overflow = ERROR_BUFFER_OVERFLOW,
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disk_full= ERROR_DISK_FULL,
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// ...
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lock_failed = ERROR_LOCK_FAILED,
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busy = ERROR_BUSY,
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cancel_violation = ERROR_CANCEL_VIOLATION,
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already_exists = ERROR_ALREADY_EXISTS
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// ...
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// TODO: add more Windows errors
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};
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} // namespace windows
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# ifndef BOOST_SYSTEM_NO_DEPRECATED
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namespace windows = windows_error;
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# endif
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template<> struct is_error_code_enum<windows_error::windows_error_code>
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{ static const bool value = true; };
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namespace windows_error
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{
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inline error_code make_error_code( windows_error_code e )
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{ return error_code( e, system_category ); }
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}
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#else
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# error BOOST_POSIX_API or BOOST_WINDOWS_API must be defined
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#endif
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} // namespace system
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} // namespace boost
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