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Ported regex files for Windows Phone 8.1 #22

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Ported regex files for Windows Phone 8.1 #22

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e9cae88
Ported regex files for Windows Phone 8.1
mosherubin Nov 3, 2015
29690c7
Changed all instances of BOOST_ASIO_WINDOWS_RUNTIME to BOOST_PLAT_WIN…
mosherubin Nov 4, 2015
30302c4
Changed BOOST_ASIO_WINDOWS_RUNTIME to BOOST_PLAT_WINDOWS_RUNTIME
mosherubin Nov 4, 2015
dc9ec1c
As per MarcelRaad's comment, I have removed any WinRT-related preproc…
mosherubin Nov 4, 2015
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5 changes: 3 additions & 2 deletions include/boost/regex/v4/fileiter.hpp
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Original file line number Diff line number Diff line change
Expand Up @@ -229,14 +229,15 @@ class BOOST_REGEX_DECL mapfile_iterator
file = f;
node = f->_first + arg_position / mapfile::buf_size;
offset = arg_position % mapfile::buf_size;
file->lock(node);
if(file && node)
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Given the assert earlier, these checks look redundant to me?

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The three functions:

  1. mapfile_iterator(const mapfile* f, long arg_position)
  2. mapfile_iterator(const mapfile_iterator& i)
  3. ~mapfile_iterator()

are not consistent in their manner of validity checking. If BOOST_ASSERT is like its C counterpart, then it will only catch a null 'f' value in debug, not release. For release mode, all validity checks must be in the form of C++ comparison statements. For that matter, the BOOST_ASSERT() macro should be used in all three functions.

In addition, the check of "if (file && node)" was being done in only function no. 1, not in 2 and 3. IMHO, the check should be done in all three functions (and not in 1 & 2 only as I submitted).

Both "file" and "node' should be checked for null values in all three functions.

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Please see comment #19 for a similar discussion.

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On 03/11/2015 20:35, mosherubin wrote:

In include/boost/regex/v4/fileiter.hpp
#22 (comment):

@@ -229,14 +229,15 @@ class BOOST_REGEX_DECL mapfile_iterator
file = f;
node = f->_first + arg_position / mapfile::buf_size;
offset = arg_position % mapfile::buf_size;

  •  file->lock(node);

  •  if(file && node)

The three functions:

  1. mapfile_iterator(const mapfile* f, long arg_position)
  2. mapfile_iterator(const mapfile_iterator& i)
  3. ~mapfile_iterator()

are not consistent in their manner of validity checking. If
BOOST_ASSERT is like its C counterpart, then it will only catch a null
'f' value in debug, not release. For release mode, all validity checks
must be in the form of C++ comparison statements. For that matter, the
BOOST_ASSERT() macro should be used in all three functions.

In addition, the check of "if (file && node)" was being done in only
function no. 1, not in 2 and 3. IMHO, the check should be done in all
three functions (and not in 1 & 2 only as I submitted).

Both "file" and "node' should be checked for null values in all three
functions.

You need to realise that these are strictly internal implementation
details that are only constructed in certain ways (they're also
deprecated so we're arguing over angels on a pinhead, but never mind).

The following invariants hold:

if file is NULL then node is NULL.
If file is not NULL then node is not NULL.
When constructing from a mapfile then the argument is never NULL.

IMO using asserts to check these invariants is exactly the correct thing
to do.

Best, John.

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Hi John,

I most certainly defer to you on these issues 👍 ! Do you need me to make any changes or can you make them? if the former, what would you like me to do?

Regards,

Moshe

file->lock(node);
}
mapfile_iterator(const mapfile_iterator& i)
{
file = i.file;
node = i.node;
offset = i.offset;
if(file)
if(file && node)
file->lock(node);
}
~mapfile_iterator()
Expand Down
76 changes: 57 additions & 19 deletions src/fileiter.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -3,12 +3,12 @@
* Copyright (c) 1998-2002
* John Maddock
*
* Use, modification and distribution are subject to the
* Boost Software License, Version 1.0. (See accompanying file
* Use, modification and distribution are subject to 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)
*
*/

/*
* LOCATION: see http://www.boost.org for most recent version.
* FILE: fileiter.cpp
Expand Down Expand Up @@ -53,6 +53,12 @@ namespace std{
#include <sys/cygwin.h>
#endif

#if defined (BOOST_PLAT_WINDOWS_RUNTIME) || defined (BOOST_PLAT_WINDOWS_PHONE)
WINBASEAPI HANDLE WINAPI CreateFileMappingFromAppW(HANDLE, LPSECURITY_ATTRIBUTES, ULONG, ULONG64, LPCWSTR);
WINBASEAPI LPVOID WINAPI MapViewOfFileFromAppW(HANDLE, ULONG, ULONG64, SIZE_T);
WINBASEAPI BOOL WINAPI UnmapViewOfFile(LPCVOID);
#endif /* defined (BOOST_PLAT_WINDOWS_RUNTIME) || defined (BOOST_PLAT_WINDOWS_PHONE) */

#ifdef BOOST_MSVC
# pragma warning(disable: 4800)
#endif
Expand Down Expand Up @@ -87,13 +93,23 @@ const char* _fi_sep_alt = _fi_sep;

void mapfile::open(const char* file)
{
#if defined(BOOST_NO_ANSI_APIS)
#if defined(BOOST_NO_ANSI_APIS) || defined (BOOST_PLAT_WINDOWS_RUNTIME) || defined (BOOST_PLAT_WINDOWS_PHONE)
int filename_size = strlen(file);
LPWSTR wide_file = (LPWSTR)_alloca( (filename_size + 1) * sizeof(WCHAR) );
if(::MultiByteToWideChar(CP_ACP, 0, file, filename_size, wide_file, filename_size + 1) == 0)
hfile = INVALID_HANDLE_VALUE;
else
{
# if defined (BOOST_PLAT_WINDOWS_RUNTIME) || defined (BOOST_PLAT_WINDOWS_PHONE)
CREATEFILE2_EXTENDED_PARAMETERS params = { 0 };

params.dwSize = sizeof (CREATEFILE2_EXTENDED_PARAMETERS);
params.dwFileAttributes = FILE_ATTRIBUTE_NORMAL;
hfile = CreateFile2(wide_file, GENERIC_READ, FILE_SHARE_READ, OPEN_EXISTING, &params);
# else
hfile = CreateFileW(wide_file, GENERIC_READ, FILE_SHARE_READ, 0, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0);
# endif
}
#elif defined(__CYGWIN__)||defined(__CYGWIN32__)
char win32file[ MAX_PATH ];
cygwin_conv_to_win32_path( file, win32file );
Expand All @@ -103,7 +119,11 @@ void mapfile::open(const char* file)
#endif
if(hfile != INVALID_HANDLE_VALUE)
{
#if defined (BOOST_PLAT_WINDOWS_RUNTIME) || defined (BOOST_PLAT_WINDOWS_PHONE)
hmap = CreateFileMappingFromAppW(hfile, 0, PAGE_READONLY, 0, 0);
#else
hmap = CreateFileMapping(hfile, 0, PAGE_READONLY, 0, 0, 0);
#endif
if((hmap == INVALID_HANDLE_VALUE) || (hmap == NULL))
{
CloseHandle(hfile);
Expand All @@ -112,7 +132,13 @@ void mapfile::open(const char* file)
std::runtime_error err("Unable to create file mapping.");
boost::BOOST_REGEX_DETAIL_NS::raise_runtime_error(err);
}

#if defined (BOOST_PLAT_WINDOWS_RUNTIME) || defined (BOOST_PLAT_WINDOWS_PHONE)
_first = static_cast<const char*>(MapViewOfFileFromAppW(hmap, FILE_MAP_READ, 0, 0));
#else
_first = static_cast<const char*>(MapViewOfFile(hmap, FILE_MAP_READ, 0, 0, 0));
#endif

if(_first == 0)
{
CloseHandle(hmap);
Expand All @@ -121,7 +147,14 @@ void mapfile::open(const char* file)
hfile = 0;
std::runtime_error err("Unable to create file mapping.");
}

#if defined (BOOST_PLAT_WINDOWS_RUNTIME) || defined (BOOST_PLAT_WINDOWS_PHONE)
WIN32_FILE_ATTRIBUTE_DATA fad = { 0 };
GetFileAttributesExW(wide_file, GetFileExInfoStandard, &fad);
_last = _first + fad.nFileSizeLow;
#else
_last = _first + GetFileSize(hfile, 0);
#endif
}
else
{
Expand Down Expand Up @@ -259,23 +292,23 @@ void mapfile::lock(pointer* node)const
*p = 0;
*(reinterpret_cast<int*>(*node)) = 1;
}

std::size_t read_size = 0;
int read_pos = std::fseek(hfile, (node - _first) * buf_size, SEEK_SET);

if(0 == read_pos && node == _last - 1)
read_size = std::fread(*node + sizeof(int), _size % buf_size, 1, hfile);
std::size_t read_size = 0;
int read_pos = std::fseek(hfile, (node - _first) * buf_size, SEEK_SET);

if(0 == read_pos && node == _last - 1)
read_size = std::fread(*node + sizeof(int), _size % buf_size, 1, hfile);
else
read_size = std::fread(*node + sizeof(int), buf_size, 1, hfile);
if((read_size == 0) || (std::ferror(hfile)))
{
#ifndef BOOST_NO_EXCEPTIONS
{
#ifndef BOOST_NO_EXCEPTIONS
unlock(node);
throw std::runtime_error("Unable to read file.");
#else
BOOST_REGEX_NOEH_ASSERT((0 == std::ferror(hfile)) && (read_size != 0));
#endif
}
throw std::runtime_error("Unable to read file.");
#else
BOOST_REGEX_NOEH_ASSERT((0 == std::ferror(hfile)) && (read_size != 0));
#endif
}
}
else
{
Expand Down Expand Up @@ -372,27 +405,32 @@ void mapfile::close()

inline _fi_find_handle find_first_file(const char* wild, _fi_find_data& data)
{
#ifdef BOOST_NO_ANSI_APIS
#if defined (BOOST_NO_ANSI_APIS) || defined (BOOST_PLAT_WINDOWS_RUNTIME) || defined (BOOST_PLAT_WINDOWS_PHONE)
std::size_t wild_size = std::strlen(wild);
LPWSTR wide_wild = (LPWSTR)_alloca( (wild_size + 1) * sizeof(WCHAR) );
if (::MultiByteToWideChar(CP_ACP, 0, wild, wild_size, wide_wild, wild_size + 1) == 0)
return _fi_invalid_handle;

# if defined (BOOST_NO_ANSI_APIS)
return FindFirstFileW(wide_wild, &data);
# elif defined (BOOST_PLAT_WINDOWS_RUNTIME) || defined (BOOST_PLAT_WINDOWS_PHONE)
return FindFirstFileExW(wide_wild, FindExInfoStandard, &data, FindExSearchNameMatch, NULL, 0);
# endif

#else
return FindFirstFileA(wild, &data);
#endif
}

inline bool find_next_file(_fi_find_handle hf, _fi_find_data& data)
{
#ifdef BOOST_NO_ANSI_APIS
#if defined (BOOST_NO_ANSI_APIS)
return FindNextFileW(hf, &data);
#else
return FindNextFileA(hf, &data);
#endif
}

inline void copy_find_file_result_with_overflow_check(const _fi_find_data& data, char* path, size_t max_size)
{
#ifdef BOOST_NO_ANSI_APIS
Expand Down
14 changes: 11 additions & 3 deletions src/static_mutex.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -3,12 +3,12 @@
* Copyright (c) 2004
* John Maddock
*
* Use, modification and distribution are subject to the
* Boost Software License, Version 1.0. (See accompanying file
* Use, modification and distribution are subject to 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)
*
*/

/*
* LOCATION: see http://www.boost.org for most recent version.
* FILE static_mutex.cpp
Expand All @@ -19,6 +19,10 @@
#define BOOST_REGEX_SOURCE
#include <boost/config.hpp>
#include <boost/assert.hpp>
#if defined (BOOST_PLAT_WINDOWS_RUNTIME) || defined (BOOST_PLAT_WINDOWS_PHONE) || (WINAPI_FAMILY==WINAPI_FAMILY_PHONE_APP)
#include <chrono>
#include <thread>
#endif

#ifdef BOOST_HAS_THREADS

Expand Down Expand Up @@ -99,7 +103,11 @@ void scoped_static_mutex_lock::lock()
while(0 != InterlockedCompareExchange(reinterpret_cast<LONG*>(&(m_mutex.m_mutex)), 1, 0))
#endif
{
#if defined (BOOST_PLAT_WINDOWS_RUNTIME) || defined (BOOST_PLAT_WINDOWS_PHONE) || (WINAPI_FAMILY==WINAPI_FAMILY_PHONE_APP)
std::this_thread::sleep_for(std::chrono::milliseconds(1000));
#else
Sleep(0);
#endif
}
m_have_lock = true;
}
Expand Down
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