strerror.cpp File Reference

#include <corecrt_internal.h>
#include <malloc.h>
#include <stddef.h>
#include <stdlib.h>
#include <string.h>

Include dependency graph for strerror.cpp:

Go to the source code of this file.

Functions
static _Ret_z_ char *	get_failure_string (char) throw ()
static _Ret_z_ wchar_t *	get_failure_string (wchar_t) throw ()
static char *&	get_ptd_buffer (__acrt_ptd *const ptd, char) throw ()
static wchar_t *&	get_ptd_buffer (__acrt_ptd *const ptd, wchar_t) throw ()
	_Success_ (return==0) static errno_t copy_string_into_buffer(_In_reads_or_z_(max_count) char const *const string
	_Out_writes_z_ (buffer_count) char *const buffer
size_t const size_t const max_count	throw ()
template<typename Character >
static _Ret_z_ Character *__cdecl	common_strerror (int const error_number)
char *__cdecl	strerror (int const error_number)
wchar_t *__cdecl	_wcserror (int const error_number)
template<typename Character >
static errno_t __cdecl	common_strerror_s (_Out_writes_z_(buffer_count) Character *const buffer, size_t const buffer_count, int const error_number)
errno_t __cdecl	strerror_s (char *const buffer, size_t const buffer_count, int const error_number)
errno_t __cdecl	_wcserror_s (wchar_t *const buffer, size_t const buffer_count, int const error_number)

Variables
size_t const	buffer_count

Function Documentation

_Out_writes_z_()

_Out_writes_z_

(

buffer_count

)

const

_Success_()

_Success_

(

return

= = 0

)

const

_wcserror()

wchar_t *__cdecl _wcserror

(

int const

error_number

)

Definition at line 101 of file strerror.cpp.

{
    return common_strerror<wchar_t>(error_number);
}

_wcserror_s()

errno_t __cdecl _wcserror_s	(	wchar_t *const	buffer,
		size_t const	buffer_count,
		int const	error_number
	)

Definition at line 139 of file strerror.cpp.

{
    return common_strerror_s(buffer, buffer_count, error_number);
}

common_strerror()

template<typename Character >

static _Ret_z_ Character *__cdecl common_strerror ( int const  error_number )

static

Definition at line 79 of file strerror.cpp.

{
    __acrt_ptd* const ptd = __acrt_getptd_noexit();
    if (!ptd)
        return get_failure_string(Character());
 
    Character*& buffer = get_ptd_buffer(ptd, Character());
    if (!buffer)
        buffer = _calloc_crt_t(Character, strerror_buffer_count).detach();
 
    if (!buffer)
        return get_failure_string(Character());
 
    _ERRCHECK(copy_string_into_buffer(_get_sys_err_msg(error_number), buffer, strerror_buffer_count, strerror_buffer_count - 1));
    return buffer;
}

Referenced by __wcserror(), and _strerror().

common_strerror_s()

template<typename Character >

static errno_t __cdecl common_strerror_s ( _Out_writes_z_(buffer_count) Character *const  buffer, size_t const  buffer_count, int const  error_number  )

static

Definition at line 112 of file strerror.cpp.

{
    _VALIDATE_RETURN_ERRCODE(buffer != nullptr, EINVAL);
    _VALIDATE_RETURN_ERRCODE(buffer_count > 0,  EINVAL);
 
    errno_t const result = _ERRCHECK_EINVAL_ERANGE(copy_string_into_buffer(
        _get_sys_err_msg(error_number),
        buffer,
        buffer_count,
        _TRUNCATE));
 
    return result == STRUNCATE ? 0 : result;
}

Referenced by _wcserror_s(), and strerror_s().

get_failure_string() [1/2]

static _Ret_z_ char * get_failure_string ( char  ) throw ( )

static

Definition at line 22 of file strerror.cpp.

{
    return const_cast<char*>("Visual C++ CRT: Not enough memory to complete call to strerror.");
}

Referenced by common_strerror().

get_failure_string() [2/2]

static _Ret_z_ wchar_t * get_failure_string ( wchar_t  ) throw ( )

static

Definition at line 28 of file strerror.cpp.

{
    return const_cast<wchar_t*>(L"Visual C++ CRT: Not enough memory to complete call to strerror.");
}

get_ptd_buffer() [1/2]

static char *& get_ptd_buffer ( __acrt_ptd *const  ptd, char    ) throw ( )

static

Definition at line 37 of file strerror.cpp.

{
    return ptd->_strerror_buffer;
}

Referenced by common_strerror().

get_ptd_buffer() [2/2]

static wchar_t *& get_ptd_buffer ( __acrt_ptd *const  ptd, wchar_t    ) throw ( )

static

Definition at line 42 of file strerror.cpp.

{
    return ptd->_wcserror_buffer;
}

strerror()

char *__cdecl strerror

(

int const

error_number

)

Definition at line 96 of file strerror.cpp.

{
    return common_strerror<char>(error_number);
}

strerror_s()

errno_t __cdecl strerror_s	(	char *const	buffer,
		size_t const	buffer_count,
		int const	error_number
	)

Definition at line 130 of file strerror.cpp.

{
    return common_strerror_s(buffer, buffer_count, error_number);
}

throw()

size_t const size_t const max_count throw

(

)

Definition at line 56 of file strerror.cpp.

{
    return strncpy_s(buffer, buffer_count, string, max_count);
}

Variable Documentation

buffer_count

size_t const buffer_count

Definition at line 54 of file strerror.cpp.

Referenced by _wcserror_s(), common_strerror_s(), strerror_s(), and throw().