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enable_current_exception.hpp decoupled from atomic_count.hpp

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[SVN r48439]
This commit is contained in:
Emil Dotchevski
2008-08-29 04:56:02 +00:00
parent d7b98ba390
commit 0c9d70964e
5 changed files with 535 additions and 239 deletions
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9
include/boost/exception/detail/cloning_base.hpp
View File

@ -16,12 +16,19 @@ boost
{
class clone_base;
struct
new_clone
{
clone_base const * c_;
void (*d_)(clone_base const *);
};
class
cloning_base
{
public:
virtual clone_base const * clone() const = 0;
virtual new_clone clone() const = 0;
protected:

108
include/boost/exception/enable_current_exception.hpp
View File

@ -8,7 +8,6 @@
#include <boost/exception/exception.hpp>
#include <boost/exception/detail/cloning_base.hpp>
#include <boost/detail/atomic_count.hpp>
#include <boost/assert.hpp>
#include <new>
@ -31,39 +30,8 @@ boost
{
}
class
clone_base:
public counted_base
{
public:
virtual void rethrow() const=0;
};
struct
bad_alloc_impl:
public clone_base,
public std::bad_alloc
{
void
add_ref() const
{
}
void
release() const
{
}
void
rethrow() const
{
throw *this;
}
};
template <class T>
clone_base * make_clone( T const & );
new_clone make_clone( T const & );
template <class T>
class
@ -80,15 +48,46 @@ boost
copy_boost_exception(this,&x);
}
~clone_impl() throw()
{
}
private:
clone_base const *
new_clone
clone() const
{
return make_clone<T>(*this);
}
};
class
clone_base
{
public:
virtual void rethrow() const=0;
virtual ~clone_base() throw()=0;
};
inline
clone_base::
~clone_base() throw()
{
}
struct
bad_alloc_impl:
public clone_base,
public std::bad_alloc
{
void
rethrow() const
{
throw *this;
}
};
template <class T>
class
exception_clone:
@ -99,27 +98,15 @@ boost
explicit
exception_clone( T const & x ):
T(x),
count_(0)
T(x)
{
copy_boost_exception(this,&x);
}
private:
mutable detail::atomic_count count_;
void
add_ref() const
~exception_clone() throw()
{
++count_;
}
void
release() const
{
if( !--count_ )
delete this;
}
void
@ -129,27 +116,44 @@ boost
}
};
inline
void
delete_clone( clone_base const * c )
{
BOOST_ASSERT(c!=0);
delete c;
}
inline
void
delete_clone_noop( clone_base const * )
{
}
template <class T>
inline
clone_base *
new_clone
make_clone( T const & x )
{
new_clone tmp = {0,0};
try
{
return new exception_clone<T>(x);
tmp.c_=new exception_clone<T>(x);
tmp.d_=&delete_clone;
}
catch(
std::bad_alloc & )
{
static bad_alloc_impl bad_alloc;
return &bad_alloc;
tmp.c_=&bad_alloc;
tmp.d_=&delete_clone_noop;
}
catch(
... )
{
BOOST_ASSERT(0);
return 0;
}
return tmp;
}
}