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<h1 class="topictitle1">zero_allocator</h1>
<div><div class="section"><h2 class="sectiontitle">Summary</h2>
<p>Template class for allocator that returns zeroed memory. </p>
</div>
<div class="section"><h2 class="sectiontitle">Syntax</h2>
<pre>template <typename T,
template<typename U> class Alloc = tbb_allocator>
class zero_allocator: public Alloc<T>;
</pre>
</div>
<div class="section"><h2 class="sectiontitle">Header</h2>
<pre>#include "tbb/tbb_allocator.h"</pre>
</div>
<div class="section"><h2 class="sectiontitle">Description</h2>
<p>A <samp class="codeph">zero_allocator</samp> allocates zeroed memory. A
<samp class="codeph">zero_allocator<<em>T,A</em>></samp> can be instantiated for any
class<em> A</em> that models the Allocator concept. The default for <em>A</em> is
<samp class="codeph">tbb_allocator</samp>. A <samp class="codeph">zero_allocator</samp> forwards
allocation requests to <em>A</em> and zeros the allocation before returning it.</p>
</div>
<div class="section"><h2 class="sectiontitle">Members</h2>
<pre>namespace tbb {
template <typename T, template<typename U> class Alloc = tbb_allocator>
class zero_allocator : public Alloc<T> {
public:
typedef Alloc<T> base_allocator_type;
typedef typename base_allocator_type::value_type
value_type;
typedef typename base_allocator_type::pointer pointer;
typedef typename base_allocator_type::const_pointer
const_pointer;
typedef typename base_allocator_type::reference
reference;
typedef typename base_allocator_type::const_reference
const_reference;
typedef typename base_allocator_type::size_type
size_type;
typedef typename base_allocator_type::difference_type
difference_type;
template<typename U> struct rebind {
typedef zero_allocator<U, Alloc> other;
};
zero_allocator() throw() { }
zero_allocator(const zero_allocator &a) throw();
template<typename U>
zero_allocator(const zero_allocator<U> &a) throw();
pointer allocate(const size_type n, const void* hint=0);
};
}
</pre>
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<div class="parentlink"><strong>Parent topic:</strong> <a href="../../reference/memory_allocation.htm">Memory Allocation</a></div>
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