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* Added autoconf support for cacheline_aligned and SMP_CACHE_BYTES.

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git-svn-id: svn://rakshasa.no/libtorrent/trunk/rtorrent@1115 e378c898-3ddf-0310-93e7-cc216c733640
This commit is contained in:
rakshasa
2009-12-18 21:56:14 +00:00
parent 2304983f4f
commit 5470e50ffb
8 changed files with 38 additions and 19 deletions
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rak/allocators.h
+8 -11
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@@ -39,20 +39,21 @@
#ifndef RAK_ALLOCATORS_H
#define RAK_ALLOCATORS_H
#include <cstddef>
#include <limits>
#include <stdlib.h>
#include <sys/types.h>
namespace rak {
template <class T = void*>
class cacheline_allocator {
public:
typedef std::allocator<T> base_type;
typedef size_t size_type;
typedef ptrdiff_t difference_type;
typedef T* pointer;
typedef const T* const_pointer;
typedef const void* const_void_pointer;
typedef T& reference;
typedef const T& const_reference;
typedef T value_type;
@@ -72,10 +73,11 @@ public:
size_type max_size () const throw() { return std::numeric_limits<size_t>::max() / sizeof(T); }
pointer allocate(size_type num, std::allocator<void>::const_pointer hint = 0) {
pointer allocate(size_type num, const_void_pointer hint = 0) { return alloc_size(num*sizeof(T)); }
static pointer alloc_size(size_type size) {
pointer ptr = NULL;
posix_memalign((void**)&ptr, L1_CACHE_BYTES, num*sizeof(T));
posix_memalign((void**)&ptr, LT_SMP_CACHE_BYTES, size);
return ptr;
}
@@ -102,11 +104,6 @@ bool operator!= (const cacheline_allocator<T1>&, const cacheline_allocator<T2>&)
//
template <typename T>
void* operator new(size_t s, rak::cacheline_allocator<T> a) {
typename rak::cacheline_allocator<T>::pointer ptr = NULL;
posix_memalign((void**)&ptr, L1_CACHE_BYTES, s);
return ptr;
}
void* operator new(size_t s, rak::cacheline_allocator<T> a) { return a.alloc_size(s); }
#endif // namespace rak