boostorg/detail
1
0
Fork 1
mirror of https://github.com/boostorg/detail.git synced 2025-07-31 21:04:27 +02:00
Code Issues Packages Projects Releases Wiki Activity

* Changed BOOST_RE_THREADS to BOOST_HAS_THREADS,

Browse Source 
* Updated allocator code to use SGI node based allocator when available.


[SVN r11829]
This commit is contained in:
John Maddock
2001-11-30 11:58:04 +00:00
parent 71790af7f6
commit 528fb22617
1 changed files with 40 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

40
include/boost/detail/allocator.hpp
View File

@@ -22,6 +22,22 @@ using ::size_t;
} }
#endif #endif
// see if we have SGI alloc class:
#if defined(BOOST_NO_STD_ALLOCATOR) && (defined(__SGI_STL_PORT) || defined(_STLPORT_VERSION) || defined(__GLIBCPP__) || defined(__STL_CONFIG_H))
# define BOOST_HAVE_SGI_ALLOCATOR
# include <memory>
# if defined(__SGI_STL_PORT) || defined(_STLPORT_VERSION)
namespace boost{ namespace detail{
typedef std::__sgi_alloc alloc_type;
}}
# else
namespace boost{ namespace detail{
typedef std::alloc alloc_type;
}}
# endif
#endif
namespace boost{ namespace detail{ namespace boost{ namespace detail{
template <class T> template <class T>
@@ -99,16 +115,28 @@ public:
pointer allocate(size_type n, const void* = 0) pointer allocate(size_type n, const void* = 0)
{ {
#ifdef BOOST_HAVE_SGI_ALLOCATOR
return n != 0 ?
reinterpret_cast<pointer>(alloc_type::allocate(n * sizeof(value_type)))
: 0;
#else
return n != 0 ? return n != 0 ?
reinterpret_cast<pointer>(::operator new(n * sizeof(value_type))) reinterpret_cast<pointer>(::operator new(n * sizeof(value_type)))
: 0; : 0;
#endif
} }
void deallocate(pointer p, size_type n) void deallocate(pointer p, size_type n)
{ {
#ifdef BOOST_HAVE_SGI_ALLOCATOR
assert( (p == 0) == (n == 0) );
if (p != 0)
alloc_type::deallocate((void*)p, n);
#else
assert( (p == 0) == (n == 0) ); assert( (p == 0) == (n == 0) );
if (p != 0) if (p != 0)
::operator delete((void*)p); ::operator delete((void*)p);
#endif
} }
size_type max_size() const size_type max_size() const
@@ -158,16 +186,28 @@ public:
pointer allocate(size_type n, const void* = 0) pointer allocate(size_type n, const void* = 0)
{ {
#ifdef BOOST_HAVE_SGI_ALLOCATOR
return n != 0 ?
reinterpret_cast<pointer>(alloc_type::allocate(n))
: 0;
#else
return n != 0 ? return n != 0 ?
reinterpret_cast<pointer>(::operator new(n)) reinterpret_cast<pointer>(::operator new(n))
: 0; : 0;
#endif
} }
void deallocate(pointer p, size_type n) void deallocate(pointer p, size_type n)
{ {
#ifdef BOOST_HAVE_SGI_ALLOCATOR
assert( (p == 0) == (n == 0) );
if (p != 0)
alloc_type::deallocate((void*)p, n);
#else
assert( (p == 0) == (n == 0) ); assert( (p == 0) == (n == 0) );
if (p != 0) if (p != 0)
::operator delete((void*)p); ::operator delete((void*)p);
#endif
} }
}; };