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Use noexcept in gc_allocator

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* include/gc_allocator.h [!GC_NOEXCEPT] (GC_NOEXCEPT): Define internal
macro (to noexcept if C++11, otherwise to throw() or nothing); define
GC_NEW_ABORTS_ON_OOM if GC_NOEXCEPT is defined to nothing.
* include/gc_allocator.h (gc_allocator(), deallocate, operator==,
operator!=, gc_allocator_ignore_off_page()): Add GC_NOEXCEPT.
* include/gc_allocator.h (gc_allocator, gc_allocator_ignore_off_page,
traceable_allocator): Replace throw() to GC_NOEXCEPT.
* include/gc_allocator.h (deallocate): Remove outdated comment that
p should be non-null.
This commit is contained in:
Ivan Maidanski
2018-06-07 11:39:27 +03:00
parent c89559ba82
commit 48e8a7f998
1 changed files with 47 additions and 27 deletions
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include/gc_allocator.h
+47 -27
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@@ -51,6 +51,22 @@
# endif
#endif
#ifndef GC_NOEXCEPT
# if (defined(__BORLANDC__) \
&& (defined(_RWSTD_NO_EXCEPTIONS) || defined(_RWSTD_NO_EX_SPEC))) \
|| (defined(_MSC_VER) && defined(_HAS_EXCEPTIONS) && !_HAS_EXCEPTIONS) \
|| (defined(__WATCOMC__) && !defined(_CPPUNWIND))
# define GC_NOEXCEPT /* empty */
# ifndef GC_NEW_ABORTS_ON_OOM
# define GC_NEW_ABORTS_ON_OOM
# endif
# elif __cplusplus >= 201103L
# define GC_NOEXCEPT noexcept
# else
# define GC_NOEXCEPT throw()
# endif
#endif // !GC_NOEXCEPT
#if defined(GC_NEW_ABORTS_ON_OOM) || defined(_LIBCPP_NO_EXCEPTIONS)
# define GC_ALLOCATOR_THROW_OR_ABORT() GC_abort_on_oom()
#else
@@ -128,14 +144,14 @@ public:
typedef gc_allocator<GC_Tp1> other;
};
gc_allocator() {}
gc_allocator(const gc_allocator&) throw() {}
gc_allocator() GC_NOEXCEPT {}
gc_allocator(const gc_allocator&) GC_NOEXCEPT {}
# if !(GC_NO_MEMBER_TEMPLATES || 0 < _MSC_VER && _MSC_VER <= 1200)
// MSVC++ 6.0 do not support member templates
template <class GC_Tp1> GC_ATTR_EXPLICIT
gc_allocator(const gc_allocator<GC_Tp1>&) throw() {}
gc_allocator(const gc_allocator<GC_Tp1>&) GC_NOEXCEPT {}
# endif
~gc_allocator() throw() {}
~gc_allocator() GC_NOEXCEPT {}
pointer address(reference GC_x) const { return &GC_x; }
const_pointer address(const_reference GC_x) const { return &GC_x; }
@@ -149,11 +165,10 @@ public:
traits.GC_is_ptr_free, false));
}
// __p is not permitted to be a null pointer.
void deallocate(pointer __p, size_type /* GC_n */)
void deallocate(pointer __p, size_type /* GC_n */) GC_NOEXCEPT
{ GC_FREE(__p); }
size_type max_size() const throw()
size_type max_size() const GC_NOEXCEPT
{ return size_t(-1) / sizeof(GC_Tp); }
void construct(pointer __p, const GC_Tp& __val) { new(__p) GC_Tp(__val); }
@@ -175,13 +190,15 @@ class gc_allocator<void> {
template <class GC_T1, class GC_T2>
inline bool operator==(const gc_allocator<GC_T1>&, const gc_allocator<GC_T2>&)
inline bool operator==(const gc_allocator<GC_T1>&,
const gc_allocator<GC_T2>&) GC_NOEXCEPT
{
return true;
}
template <class GC_T1, class GC_T2>
inline bool operator!=(const gc_allocator<GC_T1>&, const gc_allocator<GC_T2>&)
inline bool operator!=(const gc_allocator<GC_T1>&,
const gc_allocator<GC_T2>&) GC_NOEXCEPT
{
return false;
}
@@ -204,15 +221,16 @@ public:
typedef gc_allocator_ignore_off_page<GC_Tp1> other;
};
gc_allocator_ignore_off_page() {}
gc_allocator_ignore_off_page(const gc_allocator_ignore_off_page&) throw() {}
gc_allocator_ignore_off_page() GC_NOEXCEPT {}
gc_allocator_ignore_off_page(const gc_allocator_ignore_off_page&)
GC_NOEXCEPT {}
# if !(GC_NO_MEMBER_TEMPLATES || 0 < _MSC_VER && _MSC_VER <= 1200)
// MSVC++ 6.0 do not support member templates
template <class GC_Tp1> GC_ATTR_EXPLICIT
gc_allocator_ignore_off_page(const gc_allocator_ignore_off_page<GC_Tp1>&)
throw() {}
GC_NOEXCEPT {}
# endif
~gc_allocator_ignore_off_page() throw() {}
~gc_allocator_ignore_off_page() GC_NOEXCEPT {}
pointer address(reference GC_x) const { return &GC_x; }
const_pointer address(const_reference GC_x) const { return &GC_x; }
@@ -226,11 +244,10 @@ public:
traits.GC_is_ptr_free, true));
}
// __p is not permitted to be a null pointer.
void deallocate(pointer __p, size_type /* GC_n */)
void deallocate(pointer __p, size_type /* GC_n */) GC_NOEXCEPT
{ GC_FREE(__p); }
size_type max_size() const throw()
size_type max_size() const GC_NOEXCEPT
{ return size_t(-1) / sizeof(GC_Tp); }
void construct(pointer __p, const GC_Tp& __val) { new(__p) GC_Tp(__val); }
@@ -251,13 +268,15 @@ class gc_allocator_ignore_off_page<void> {
};
template <class GC_T1, class GC_T2>
inline bool operator==(const gc_allocator_ignore_off_page<GC_T1>&, const gc_allocator_ignore_off_page<GC_T2>&)
inline bool operator==(const gc_allocator_ignore_off_page<GC_T1>&,
const gc_allocator_ignore_off_page<GC_T2>&) GC_NOEXCEPT
{
return true;
}
template <class GC_T1, class GC_T2>
inline bool operator!=(const gc_allocator_ignore_off_page<GC_T1>&, const gc_allocator_ignore_off_page<GC_T2>&)
inline bool operator!=(const gc_allocator_ignore_off_page<GC_T1>&,
const gc_allocator_ignore_off_page<GC_T2>&) GC_NOEXCEPT
{
return false;
}
@@ -284,14 +303,14 @@ public:
typedef traceable_allocator<GC_Tp1> other;
};
traceable_allocator() throw() {}
traceable_allocator(const traceable_allocator&) throw() {}
traceable_allocator() GC_NOEXCEPT {}
traceable_allocator(const traceable_allocator&) GC_NOEXCEPT {}
# if !(GC_NO_MEMBER_TEMPLATES || 0 < _MSC_VER && _MSC_VER <= 1200)
// MSVC++ 6.0 do not support member templates
template <class GC_Tp1> GC_ATTR_EXPLICIT
traceable_allocator(const traceable_allocator<GC_Tp1>&) throw() {}
traceable_allocator(const traceable_allocator<GC_Tp1>&) GC_NOEXCEPT {}
# endif
~traceable_allocator() throw() {}
~traceable_allocator() GC_NOEXCEPT {}
pointer address(reference GC_x) const { return &GC_x; }
const_pointer address(const_reference GC_x) const { return &GC_x; }
@@ -305,11 +324,10 @@ public:
return static_cast<GC_Tp*>(obj);
}
// __p is not permitted to be a null pointer.
void deallocate(pointer __p, size_type /* GC_n */)
void deallocate(pointer __p, size_type /* GC_n */) GC_NOEXCEPT
{ GC_FREE(__p); }
size_type max_size() const throw()
size_type max_size() const GC_NOEXCEPT
{ return size_t(-1) / sizeof(GC_Tp); }
void construct(pointer __p, const GC_Tp& __val) { new(__p) GC_Tp(__val); }
@@ -331,13 +349,15 @@ class traceable_allocator<void> {
template <class GC_T1, class GC_T2>
inline bool operator==(const traceable_allocator<GC_T1>&, const traceable_allocator<GC_T2>&)
inline bool operator==(const traceable_allocator<GC_T1>&,
const traceable_allocator<GC_T2>&) GC_NOEXCEPT
{
return true;
}
template <class GC_T1, class GC_T2>
inline bool operator!=(const traceable_allocator<GC_T1>&, const traceable_allocator<GC_T2>&)
inline bool operator!=(const traceable_allocator<GC_T1>&,
const traceable_allocator<GC_T2>&) GC_NOEXCEPT
{
return false;
}