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llvm-mirror/include/llvm/Support/system_error.h
Chandler Carruth cc9b4516cb Rewrite LLVM's generalized support library for hashing to follow the API 
of the proposed standard hashing interfaces (N3333), and to use
a modified and tuned version of the CityHash algorithm.

Some of the highlights of this change:
 -- Significantly higher quality hashing algorithm with very well
    distributed results, and extremely few collisions. Should be close to
    a checksum for up to 64-bit keys. Very little clustering or clumping of
    hash codes, to better distribute load on probed hash tables.
 -- Built-in support for reserved values.
 -- Simplified API that composes cleanly with other C++ idioms and APIs.
 -- Better scaling performance as keys grow. This is the fastest
    algorithm I've found and measured for moderately sized keys (such as
    show up in some of the uniquing and folding use cases)
 -- Support for enabling per-execution seeds to prevent table ordering
    or other artifacts of hashing algorithms to impact the output of
    LLVM. The seeding would make each run different and highlight these
    problems during bootstrap.

This implementation was tested extensively using the SMHasher test
suite, and pased with flying colors, doing better than the original
CityHash algorithm even.

I've included a unittest, although it is somewhat minimal at the moment.
I've also added (or refactored into the proper location) type traits
necessary to implement this, and converted users of GeneralHash over.

My only immediate concerns with this implementation is the performance
of hashing small keys. I've already started working to improve this, and
will continue to do so. Currently, the only algorithms faster produce
lower quality results, but it is likely there is a better compromise
than the current one.

Many thanks to Jeffrey Yasskin who did most of the work on the N3333
paper, pair-programmed some of this code, and reviewed much of it. Many
thanks also go to Geoff Pike Pike and Jyrki Alakuijala, the original
authors of CityHash on which this is heavily based, and Austin Appleby
who created MurmurHash and the SMHasher test suite.

Also thanks to Nadav, Tobias, Howard, Jay, Nick, Ahmed, and Duncan for
all of the review comments! If there are further comments or concerns,
please let me know and I'll jump on 'em.

llvm-svn: 151822
2012-03-01 18:55:25 +00:00

904 lines
26 KiB
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//===---------------------------- system_error ------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This was lifted from libc++ and modified for C++03. This is called
// system_error even though it does not define that class because that's what
// it's called in C++0x. We don't define system_error because it is only used
// for exception handling, which we don't use in LLVM.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_SYSTEM_SYSTEM_ERROR_H
#define LLVM_SYSTEM_SYSTEM_ERROR_H
/*
system_error synopsis
namespace std
{
class error_category
{
public:
virtual ~error_category();
error_category(const error_category&) = delete;
error_category& operator=(const error_category&) = delete;
virtual const char* name() const = 0;
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;
virtual std::string message(int ev) const = 0;
bool operator==(const error_category& rhs) const;
bool operator!=(const error_category& rhs) const;
bool operator<(const error_category& rhs) const;
};
const error_category& generic_category();
const error_category& system_category();
template <class T> struct is_error_code_enum
: public false_type {};
template <class T> struct is_error_condition_enum
: public false_type {};
class error_code
{
public:
// constructors:
error_code();
error_code(int val, const error_category& cat);
template <class ErrorCodeEnum>
error_code(ErrorCodeEnum e);
// modifiers:
void assign(int val, const error_category& cat);
template <class ErrorCodeEnum>
error_code& operator=(ErrorCodeEnum e);
void clear();
// observers:
int value() const;
const error_category& category() const;
error_condition default_error_condition() const;
std::string message() const;
explicit operator bool() const;
};
// non-member functions:
bool operator<(const error_code& lhs, const error_code& rhs);
template <class charT, class traits>
basic_ostream<charT,traits>&
operator<<(basic_ostream<charT,traits>& os, const error_code& ec);
class error_condition
{
public:
// constructors:
error_condition();
error_condition(int val, const error_category& cat);
template <class ErrorConditionEnum>
error_condition(ErrorConditionEnum e);
// modifiers:
void assign(int val, const error_category& cat);
template <class ErrorConditionEnum>
error_condition& operator=(ErrorConditionEnum e);
void clear();
// observers:
int value() const;
const error_category& category() const;
std::string message() const;
explicit operator bool() const;
};
bool operator<(const error_condition& lhs, const error_condition& rhs);
class system_error
: public runtime_error
{
public:
system_error(error_code ec, const std::string& what_arg);
system_error(error_code ec, const char* what_arg);
system_error(error_code ec);
system_error(int ev, const error_category& ecat, const std::string& what_arg);
system_error(int ev, const error_category& ecat, const char* what_arg);
system_error(int ev, const error_category& ecat);
const error_code& code() const throw();
const char* what() const throw();
};
enum class errc
{
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_symbolic_link_levels, // ELOOP
value_too_large, // EOVERFLOW
wrong_protocol_type // EPROTOTYPE
};
template <> struct is_error_condition_enum<errc> : true_type { }
error_code make_error_code(errc e);
error_condition make_error_condition(errc e);
// Comparison operators:
bool operator==(const error_code& lhs, const error_code& rhs);
bool operator==(const error_code& lhs, const error_condition& rhs);
bool operator==(const error_condition& lhs, const error_code& rhs);
bool operator==(const error_condition& lhs, const error_condition& rhs);
bool operator!=(const error_code& lhs, const error_code& rhs);
bool operator!=(const error_code& lhs, const error_condition& rhs);
bool operator!=(const error_condition& lhs, const error_code& rhs);
bool operator!=(const error_condition& lhs, const error_condition& rhs);
template <> struct hash<std::error_code>;
} // std
*/
#include "llvm/Config/llvm-config.h"
#include "llvm/Support/type_traits.h"
#include <cerrno>
#include <string>
// This must be here instead of a .inc file because it is used in the definition
// of the enum values below.
#ifdef LLVM_ON_WIN32
// The following numbers were taken from VS2010.
# ifndef EAFNOSUPPORT
# define EAFNOSUPPORT 102
# endif
# ifndef EADDRINUSE
# define EADDRINUSE 100
# endif
# ifndef EADDRNOTAVAIL
# define EADDRNOTAVAIL 101
# endif
# ifndef EISCONN
# define EISCONN 113
# endif
# ifndef E2BIG
# define E2BIG 7
# endif
# ifndef EDOM
# define EDOM 33
# endif
# ifndef EFAULT
# define EFAULT 14
# endif
# ifndef EBADF
# define EBADF 9
# endif
# ifndef EBADMSG
# define EBADMSG 104
# endif
# ifndef EPIPE
# define EPIPE 32
# endif
# ifndef ECONNABORTED
# define ECONNABORTED 106
# endif
# ifndef EALREADY
# define EALREADY 103
# endif
# ifndef ECONNREFUSED
# define ECONNREFUSED 107
# endif
# ifndef ECONNRESET
# define ECONNRESET 108
# endif
# ifndef EXDEV
# define EXDEV 18
# endif
# ifndef EDESTADDRREQ
# define EDESTADDRREQ 109
# endif
# ifndef EBUSY
# define EBUSY 16
# endif
# ifndef ENOTEMPTY
# define ENOTEMPTY 41
# endif
# ifndef ENOEXEC
# define ENOEXEC 8
# endif
# ifndef EEXIST
# define EEXIST 17
# endif
# ifndef EFBIG
# define EFBIG 27
# endif
# ifndef ENAMETOOLONG
# define ENAMETOOLONG 38
# endif
# ifndef ENOSYS
# define ENOSYS 40
# endif
# ifndef EHOSTUNREACH
# define EHOSTUNREACH 110
# endif
# ifndef EIDRM
# define EIDRM 111
# endif
# ifndef EILSEQ
# define EILSEQ 42
# endif
# ifndef ENOTTY
# define ENOTTY 25
# endif
# ifndef EINTR
# define EINTR 4
# endif
# ifndef EINVAL
# define EINVAL 22
# endif
# ifndef ESPIPE
# define ESPIPE 29
# endif
# ifndef EIO
# define EIO 5
# endif
# ifndef EISDIR
# define EISDIR 21
# endif
# ifndef EMSGSIZE
# define EMSGSIZE 115
# endif
# ifndef ENETDOWN
# define ENETDOWN 116
# endif
# ifndef ENETRESET
# define ENETRESET 117
# endif
# ifndef ENETUNREACH
# define ENETUNREACH 118
# endif
# ifndef ENOBUFS
# define ENOBUFS 119
# endif
# ifndef ECHILD
# define ECHILD 10
# endif
# ifndef ENOLINK
# define ENOLINK 121
# endif
# ifndef ENOLCK
# define ENOLCK 39
# endif
# ifndef ENODATA
# define ENODATA 120
# endif
# ifndef ENOMSG
# define ENOMSG 122
# endif
# ifndef ENOPROTOOPT
# define ENOPROTOOPT 123
# endif
# ifndef ENOSPC
# define ENOSPC 28
# endif
# ifndef ENOSR
# define ENOSR 124
# endif
# ifndef ENXIO
# define ENXIO 6
# endif
# ifndef ENODEV
# define ENODEV 19
# endif
# ifndef ENOENT
# define ENOENT 2
# endif
# ifndef ESRCH
# define ESRCH 3
# endif
# ifndef ENOTDIR
# define ENOTDIR 20
# endif
# ifndef ENOTSOCK
# define ENOTSOCK 128
# endif
# ifndef ENOSTR
# define ENOSTR 125
# endif
# ifndef ENOTCONN
# define ENOTCONN 126
# endif
# ifndef ENOMEM
# define ENOMEM 12
# endif
# ifndef ENOTSUP
# define ENOTSUP 129
# endif
# ifndef ECANCELED
# define ECANCELED 105
# endif
# ifndef EINPROGRESS
# define EINPROGRESS 112
# endif
# ifndef EPERM
# define EPERM 1
# endif
# ifndef EOPNOTSUPP
# define EOPNOTSUPP 130
# endif
# ifndef EWOULDBLOCK
# define EWOULDBLOCK 140
# endif
# ifndef EOWNERDEAD
# define EOWNERDEAD 133
# endif
# ifndef EACCES
# define EACCES 13
# endif
# ifndef EPROTO
# define EPROTO 134
# endif
# ifndef EPROTONOSUPPORT
# define EPROTONOSUPPORT 135
# endif
# ifndef EROFS
# define EROFS 30
# endif
# ifndef EDEADLK
# define EDEADLK 36
# endif
# ifndef EAGAIN
# define EAGAIN 11
# endif
# ifndef ERANGE
# define ERANGE 34
# endif
# ifndef ENOTRECOVERABLE
# define ENOTRECOVERABLE 127
# endif
# ifndef ETIME
# define ETIME 137
# endif
# ifndef ETXTBSY
# define ETXTBSY 139
# endif
# ifndef ETIMEDOUT
# define ETIMEDOUT 138
# endif
# ifndef ENFILE
# define ENFILE 23
# endif
# ifndef EMFILE
# define EMFILE 24
# endif
# ifndef EMLINK
# define EMLINK 31
# endif
# ifndef ELOOP
# define ELOOP 114
# endif
# ifndef EOVERFLOW
# define EOVERFLOW 132
# endif
# ifndef EPROTOTYPE
# define EPROTOTYPE 136
# endif
#endif
namespace llvm {
// is_error_code_enum
template <class Tp> struct is_error_code_enum : public false_type {};
// is_error_condition_enum
template <class Tp> struct is_error_condition_enum : public false_type {};
// Some error codes are not present on all platforms, so we provide equivalents
// for them:
//enum class errc
struct errc {
enum _ {
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,
#ifdef EBADMSG
bad_message = EBADMSG,
#else
bad_message = EINVAL,
#endif
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,
#ifdef ENOLINK
no_link = ENOLINK,
#else
no_link = EINVAL,
#endif
no_lock_available = ENOLCK,
#ifdef ENODATA
no_message_available = ENODATA,
#else
no_message_available = ENOMSG,
#endif
no_message = ENOMSG,
no_protocol_option = ENOPROTOOPT,
no_space_on_device = ENOSPC,
#ifdef ENOSR
no_stream_resources = ENOSR,
#else
no_stream_resources = ENOMEM,
#endif
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,
#ifdef ENOSTR
not_a_stream = ENOSTR,
#else
not_a_stream = EINVAL,
#endif
not_connected = ENOTCONN,
not_enough_memory = ENOMEM,
not_supported = ENOTSUP,
#ifdef ECANCELED
operation_canceled = ECANCELED,
#else
operation_canceled = EINVAL,
#endif
operation_in_progress = EINPROGRESS,
operation_not_permitted = EPERM,
operation_not_supported = EOPNOTSUPP,
operation_would_block = EWOULDBLOCK,
#ifdef EOWNERDEAD
owner_dead = EOWNERDEAD,
#else
owner_dead = EINVAL,
#endif
permission_denied = EACCES,
#ifdef EPROTO
protocol_error = EPROTO,
#else
protocol_error = EINVAL,
#endif
protocol_not_supported = EPROTONOSUPPORT,
read_only_file_system = EROFS,
resource_deadlock_would_occur = EDEADLK,
resource_unavailable_try_again = EAGAIN,
result_out_of_range = ERANGE,
#ifdef ENOTRECOVERABLE
state_not_recoverable = ENOTRECOVERABLE,
#else
state_not_recoverable = EINVAL,
#endif
#ifdef ETIME
stream_timeout = ETIME,
#else
stream_timeout = ETIMEDOUT,
#endif
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_symbolic_link_levels = ELOOP,
value_too_large = EOVERFLOW,
wrong_protocol_type = EPROTOTYPE
};
_ v_;
errc(_ v) : v_(v) {}
operator int() const {return v_;}
};
template <> struct is_error_condition_enum<errc> : true_type { };
template <> struct is_error_condition_enum<errc::_> : true_type { };
class error_condition;
class error_code;
// class error_category
class _do_message;
class error_category
{
public:
virtual ~error_category();
private:
error_category();
error_category(const error_category&);// = delete;
error_category& operator=(const error_category&);// = delete;
public:
virtual const char* name() const = 0;
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;
virtual std::string message(int _ev) const = 0;
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 this < &_rhs;}
friend class _do_message;
};
class _do_message : public error_category
{
public:
virtual std::string message(int ev) const;
};
const error_category& generic_category();
const error_category& system_category();
/// Get the error_category used for errno values from POSIX functions. This is
/// the same as the system_category on POSIX systems, but is the same as the
/// generic_category on Windows.
const error_category& posix_category();
class error_condition
{
int _val_;
const error_category* _cat_;
public:
error_condition() : _val_(0), _cat_(&generic_category()) {}
error_condition(int _val, const error_category& _cat)
: _val_(_val), _cat_(&_cat) {}
template <class E>
error_condition(E _e, typename enable_if_c<
is_error_condition_enum<E>::value
>::type* = 0)
{*this = make_error_condition(_e);}
void assign(int _val, const error_category& _cat) {
_val_ = _val;
_cat_ = &_cat;
}
template <class E>
typename enable_if_c
<
is_error_condition_enum<E>::value,
error_condition&
>::type
operator=(E _e)
{*this = make_error_condition(_e); return *this;}
void clear() {
_val_ = 0;
_cat_ = &generic_category();
}
int value() const {return _val_;}
const error_category& category() const {return *_cat_;}
std::string message() const;
typedef void (*unspecified_bool_type)();
static void unspecified_bool_true() {}
operator unspecified_bool_type() const { // true if error
return _val_ == 0 ? 0 : unspecified_bool_true;
}
};
inline error_condition make_error_condition(errc _e) {
return error_condition(static_cast<int>(_e), generic_category());
}
inline bool operator<(const error_condition& _x, const error_condition& _y) {
return _x.category() < _y.category()
|| (_x.category() == _y.category() && _x.value() < _y.value());
}
// error_code
class error_code {
int _val_;
const error_category* _cat_;
public:
error_code() : _val_(0), _cat_(&system_category()) {}
static error_code success() {
return error_code();
}
error_code(int _val, const error_category& _cat)
: _val_(_val), _cat_(&_cat) {}
template <class E>
error_code(E _e, typename enable_if_c<
is_error_code_enum<E>::value
>::type* = 0) {
*this = make_error_code(_e);
}
void assign(int _val, const error_category& _cat) {
_val_ = _val;
_cat_ = &_cat;
}
template <class E>
typename enable_if_c
<
is_error_code_enum<E>::value,
error_code&
>::type
operator=(E _e)
{*this = make_error_code(_e); return *this;}
void clear() {
_val_ = 0;
_cat_ = &system_category();
}
int value() const {return _val_;}
const error_category& category() const {return *_cat_;}
error_condition default_error_condition() const
{return _cat_->default_error_condition(_val_);}
std::string message() const;
typedef void (*unspecified_bool_type)();
static void unspecified_bool_true() {}
operator unspecified_bool_type() const { // true if error
return _val_ == 0 ? 0 : unspecified_bool_true;
}
};
inline error_code make_error_code(errc _e) {
return error_code(static_cast<int>(_e), generic_category());
}
inline bool operator<(const error_code& _x, const error_code& _y) {
return _x.category() < _y.category()
|| (_x.category() == _y.category() && _x.value() < _y.value());
}
inline bool operator==(const error_code& _x, const error_code& _y) {
return _x.category() == _y.category() && _x.value() == _y.value();
}
inline bool operator==(const error_code& _x, const error_condition& _y) {
return _x.category().equivalent(_x.value(), _y)
|| _y.category().equivalent(_x, _y.value());
}
inline bool operator==(const error_condition& _x, const error_code& _y) {
return _y == _x;
}
inline bool operator==(const error_condition& _x, const error_condition& _y) {
return _x.category() == _y.category() && _x.value() == _y.value();
}
inline bool operator!=(const error_code& _x, const error_code& _y) {
return !(_x == _y);
}
inline bool operator!=(const error_code& _x, const error_condition& _y) {
return !(_x == _y);
}
inline bool operator!=(const error_condition& _x, const error_code& _y) {
return !(_x == _y);
}
inline bool operator!=(const error_condition& _x, const error_condition& _y) {
return !(_x == _y);
}
// Windows errors.
// To construct an error_code after an API error:
//
// error_code( ::GetLastError(), system_category() )
struct windows_error {
enum _ {
success = 0,
// These names and values are based on Windows WinError.h
// This is not a complete list. Add to this list if you need to explicitly
// check for it.
invalid_function = 1, // ERROR_INVALID_FUNCTION,
file_not_found = 2, // ERROR_FILE_NOT_FOUND,
path_not_found = 3, // ERROR_PATH_NOT_FOUND,
too_many_open_files = 4, // ERROR_TOO_MANY_OPEN_FILES,
access_denied = 5, // ERROR_ACCESS_DENIED,
invalid_handle = 6, // ERROR_INVALID_HANDLE,
arena_trashed = 7, // ERROR_ARENA_TRASHED,
not_enough_memory = 8, // ERROR_NOT_ENOUGH_MEMORY,
invalid_block = 9, // ERROR_INVALID_BLOCK,
bad_environment = 10, // ERROR_BAD_ENVIRONMENT,
bad_format = 11, // ERROR_BAD_FORMAT,
invalid_access = 12, // ERROR_INVALID_ACCESS,
outofmemory = 14, // ERROR_OUTOFMEMORY,
invalid_drive = 15, // ERROR_INVALID_DRIVE,
current_directory = 16, // ERROR_CURRENT_DIRECTORY,
not_same_device = 17, // ERROR_NOT_SAME_DEVICE,
no_more_files = 18, // ERROR_NO_MORE_FILES,
write_protect = 19, // ERROR_WRITE_PROTECT,
bad_unit = 20, // ERROR_BAD_UNIT,
not_ready = 21, // ERROR_NOT_READY,
bad_command = 22, // ERROR_BAD_COMMAND,
crc = 23, // ERROR_CRC,
bad_length = 24, // ERROR_BAD_LENGTH,
seek = 25, // ERROR_SEEK,
not_dos_disk = 26, // ERROR_NOT_DOS_DISK,
sector_not_found = 27, // ERROR_SECTOR_NOT_FOUND,
out_of_paper = 28, // ERROR_OUT_OF_PAPER,
write_fault = 29, // ERROR_WRITE_FAULT,
read_fault = 30, // ERROR_READ_FAULT,
gen_failure = 31, // ERROR_GEN_FAILURE,
sharing_violation = 32, // ERROR_SHARING_VIOLATION,
lock_violation = 33, // ERROR_LOCK_VIOLATION,
wrong_disk = 34, // ERROR_WRONG_DISK,
sharing_buffer_exceeded = 36, // ERROR_SHARING_BUFFER_EXCEEDED,
handle_eof = 38, // ERROR_HANDLE_EOF,
handle_disk_full = 39, // ERROR_HANDLE_DISK_FULL,
rem_not_list = 51, // ERROR_REM_NOT_LIST,
dup_name = 52, // ERROR_DUP_NAME,
bad_net_path = 53, // ERROR_BAD_NETPATH,
network_busy = 54, // ERROR_NETWORK_BUSY,
file_exists = 80, // ERROR_FILE_EXISTS,
cannot_make = 82, // ERROR_CANNOT_MAKE,
broken_pipe = 109, // ERROR_BROKEN_PIPE,
open_failed = 110, // ERROR_OPEN_FAILED,
buffer_overflow = 111, // ERROR_BUFFER_OVERFLOW,
disk_full = 112, // ERROR_DISK_FULL,
insufficient_buffer = 122, // ERROR_INSUFFICIENT_BUFFER,
lock_failed = 167, // ERROR_LOCK_FAILED,
busy = 170, // ERROR_BUSY,
cancel_violation = 173, // ERROR_CANCEL_VIOLATION,
already_exists = 183 // ERROR_ALREADY_EXISTS
};
_ v_;
windows_error(_ v) : v_(v) {}
explicit windows_error(int v) : v_(_(v)) {}
operator int() const {return v_;}
};
template <> struct is_error_code_enum<windows_error> : true_type { };
template <> struct is_error_code_enum<windows_error::_> : true_type { };
inline error_code make_error_code(windows_error e) {
return error_code(static_cast<int>(e), system_category());
}
} // end namespace llvm
#endif
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