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Fixes #7952

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[SVN r84546]
This commit is contained in:
Ion Gaztañaga
2013-05-29 10:07:00 +00:00
parent dbc1ef7722
commit ebab4240b2
2 changed files with 23 additions and 11 deletions
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13
example/doc_file_descriptor.cpp
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@@ -10,6 +10,7 @@
//////////////////////////////////////////////////////////////////////////////
#include <boost/move/detail/config_begin.hpp>
#include <cassert>
//[file_descriptor_def
@@ -24,8 +25,8 @@ class file_descriptor
return 1;
}
void operating_system_close_file(int)
{}
void operating_system_close_file(int fd)
{ (void)fd; assert(fd != 0); }
//->
int os_descr_;
@@ -33,12 +34,12 @@ class file_descriptor
BOOST_MOVABLE_BUT_NOT_COPYABLE(file_descriptor)
public:
explicit file_descriptor(const char *filename = 0) //Constructor
: os_descr_(filename ? operating_system_open_file(filename) : 0)
explicit file_descriptor(const char *filename) //Constructor
: os_descr_(operating_system_open_file(filename))
{ if(!os_descr_) throw std::runtime_error("file not found"); }
~file_descriptor() //Destructor
{ if(!os_descr_) operating_system_close_file(os_descr_); }
{ if(os_descr_) operating_system_close_file(os_descr_); }
file_descriptor(BOOST_RV_REF(file_descriptor) x) // Move ctor
: os_descr_(x.os_descr_)
@@ -46,7 +47,7 @@ class file_descriptor
file_descriptor& operator=(BOOST_RV_REF(file_descriptor) x) // Move assign
{
if(!os_descr_) operating_system_close_file(os_descr_);
if(os_descr_) operating_system_close_file(os_descr_);
os_descr_ = x.os_descr_;
x.os_descr_ = 0;
return *this;