From: technews_at_[hidden]
Date: 2007-12-29 20:56:17
Author: turkanis
Date: 2007-12-29 20:56:16 EST (Sat, 29 Dec 2007)
New Revision: 42353
URL: http://svn.boost.org/trac/boost/changeset/42353
Log:
fixed error ching in win32 API (addresses ticket #699); exposed size() in mapped_file_sink
Text files modified:
branches/iostreams_dev/boost/iostreams/device/mapped_file.hpp | 1 +
branches/iostreams_dev/libs/iostreams/src/mapped_file.cpp | 12 ++++++++++--
2 files changed, 11 insertions(+), 2 deletions(-)
Modified: branches/iostreams_dev/boost/iostreams/device/mapped_file.hpp
==============================================================================
--- branches/iostreams_dev/boost/iostreams/device/mapped_file.hpp (original)
+++ branches/iostreams_dev/boost/iostreams/device/mapped_file.hpp 2007-12-29 20:56:16 EST (Sat, 29 Dec 2007)
@@ -221,6 +221,7 @@
public closable_tag
{ };
using mapped_file::close;
+ using mapped_file::size;
explicit mapped_file_sink(mapped_file_params p);
explicit mapped_file_sink( const std::string& path,
size_type length = max_length,
Modified: branches/iostreams_dev/libs/iostreams/src/mapped_file.cpp
==============================================================================
--- branches/iostreams_dev/libs/iostreams/src/mapped_file.cpp (original)
+++ branches/iostreams_dev/libs/iostreams/src/mapped_file.cpp 2007-12-29 20:56:16 EST (Sat, 29 Dec 2007)
@@ -22,6 +22,9 @@
#ifdef BOOST_IOSTREAMS_WINDOWS
# define WIN32_LEAN_AND_MEAN // Exclude rarely-used stuff from Windows headers
# include <windows.h>
+# ifndef INVALID_SET_FILE_POINTER
+# define INVALID_SET_FILE_POINTER ((DWORD)-1)
+# endif
#else
# include <errno.h>
# include <fcntl.h>
@@ -194,9 +197,14 @@
if (p.new_file_size != 0 && !readonly) {
LONG sizehigh = (p.new_file_size >> (sizeof(LONG) * 8));
LONG sizelow = (p.new_file_size & 0xffffffff);
- ::SetFilePointer(pimpl_->handle_, sizelow, &sizehigh, FILE_BEGIN);
- if (::GetLastError() != NO_ERROR || !::SetEndOfFile(pimpl_->handle_))
+ DWORD result =
+ ::SetFilePointer(pimpl_->handle_, sizelow, &sizehigh, FILE_BEGIN);
+ if ( result == INVALID_SET_FILE_POINTER &&
+ ::GetLastError() != NO_ERROR ||
+ !::SetEndOfFile(pimpl_->handle_) )
+ {
detail::cleanup_and_throw(*pimpl_, "failed setting file size");
+ }
}
//--------------Create mapping--------------------------------------------//