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allocator.h (__shrink_to_fit): Simplify.

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2011-06-08  Paolo Carlini  <paolo.carlini@oracle.com>

	* include/bits/allocator.h (__shrink_to_fit): Simplify.
	* include/bits/stl_vector.h (vector<>::shrink_to_fit): Adjust.
	* include/bits/stl_deque.h: Likewise.
	* include/bits/stl_bvector.h: Likewise.

From-SVN: r174802
This commit is contained in:
Paolo Carlini 2011-06-08 11:07:24 +00:00
parent 6c8e9fc9e8
commit 76aa78e9eb
5 changed files with 24 additions and 25 deletions
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13
libstdc++-v3/ChangeLog
View file

@ -1,3 +1,10 @@
2011-06-08 Paolo Carlini <paolo.carlini@oracle.com>
* include/bits/allocator.h (__shrink_to_fit): Simplify.
* include/bits/stl_vector.h (vector<>::shrink_to_fit): Adjust.
* include/bits/stl_deque.h: Likewise.
* include/bits/stl_bvector.h: Likewise.
2011-06-07 Jason Merrill <jason@redhat.com>
* testsuite/lib/prune.exp: s/required/instantiated/.
@ -7,7 +14,8 @@
* testsuite/20_util/duration/requirements/typedefs_neg3.cc: Likewise.
* testsuite/20_util/forward/1_neg.cc: Likewise.
* testsuite/20_util/make_signed/requirements/typedefs_neg.cc: Likewise.
* testsuite/20_util/make_unsigned/requirements/typedefs_neg.cc: Likewise.
* testsuite/20_util/make_unsigned/requirements/typedefs_neg.cc:
Likewise.
* testsuite/20_util/ratio/cons/cons_overflow_neg.cc: Likewise.
* testsuite/20_util/ratio/operations/ops_overflow_neg.cc: Likewise.
* testsuite/20_util/shared_ptr/assign/shared_ptr_neg.cc: Likewise.
@ -17,7 +25,8 @@
* testsuite/ext/type_traits/add_unsigned_integer_neg.cc: Likewise.
* testsuite/ext/type_traits/remove_unsigned_floating_neg.cc: Likewise.
* testsuite/ext/type_traits/remove_unsigned_integer_neg.cc: Likewise.
* testsuite/tr1/2_general_utilities/shared_ptr/assign/shared_ptr_neg.cc: Likewise.
* testsuite/tr1/2_general_utilities/shared_ptr/assign/
shared_ptr_neg.cc: Likewise.
2011-06-07 Paolo Carlini <paolo.carlini@oracle.com>

30
libstdc++-v3/include/bits/allocator.h
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@ -184,28 +184,18 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
};
#ifdef __GXX_EXPERIMENTAL_CXX0X__
// A very basic implementation for now. In general we have to wait for
// the availability of the infrastructure described in N2983: we should
// try when either T has a move constructor which cannot throw or T is
// CopyConstructible.
// NB: This code doesn't properly belong here, we should find a more
// suited place common to std::vector and std::deque.
template<typename _Tp,
bool = __has_trivial_copy(typename _Tp::value_type)>
struct __shrink_to_fit
{ static void _S_do_it(_Tp&) { } };
template<typename _Tp>
struct __shrink_to_fit<_Tp, true>
bool
__shrink_to_fit(_Tp& __v)
{
static void
_S_do_it(_Tp& __v)
{
__try
{ _Tp(__v).swap(__v); }
__catch(...) { }
}
};
__try
{
_Tp(__v).swap(__v);
return true;
}
__catch(...)
{ return false; }
}
template<typename _Alloc, typename _Tp>
class __alloctr_rebind_helper

2
libstdc++-v3/include/bits/stl_bvector.h
View file

@ -844,7 +844,7 @@ template<typename _Alloc>
#ifdef __GXX_EXPERIMENTAL_CXX0X__
void
shrink_to_fit()
{ std::__shrink_to_fit<vector>::_S_do_it(*this); }
{ std::__shrink_to_fit(*this); }
#endif
void

2
libstdc++-v3/include/bits/stl_deque.h
View file

@ -1196,7 +1196,7 @@ _GLIBCXX_BEGIN_NAMESPACE_CONTAINER
/** A non-binding request to reduce memory use. */
void
shrink_to_fit()
{ std::__shrink_to_fit<deque>::_S_do_it(*this); }
{ std::__shrink_to_fit(*this); }
#endif
/**

2
libstdc++-v3/include/bits/stl_vector.h
View file

@ -646,7 +646,7 @@ _GLIBCXX_BEGIN_NAMESPACE_CONTAINER
/** A non-binding request to reduce capacity() to size(). */
void
shrink_to_fit()
{ std::__shrink_to_fit<vector>::_S_do_it(*this); }
{ std::__shrink_to_fit(*this); }
#endif
/**