#include <locking_allocator.h>

Public Member Functions
void *	allocate (size_t num_elems, size_t elem_size)

bool	deallocate (void *p, size_t num_elems, size_t elem_size) noexcept

	mlock_allocator (const mlock_allocator &)=delete

mlock_allocator &	operator= (const mlock_allocator &)=delete

Static Public Member Functions
static mlock_allocator &	instance ()

Detailed Description

Definition at line 19 of file locking_allocator.h.

Constructor & Destructor Documentation

◆ mlock_allocator()

Botan::mlock_allocator::mlock_allocator ( const mlock_allocator & )

delete

Member Function Documentation

◆ allocate()

void * Botan::mlock_allocator::allocate	(	size_t	num_elems,
		size_t	elem_size
	)

Definition at line 14 of file locking_allocator.cpp.

   {
   if(!m_pool)
      return nullptr;
 
   const size_t n = num_elems * elem_size;
   if(n / elem_size != num_elems)
      return nullptr; // overflow!
 
   return m_pool->allocate(n);
   }

◆ deallocate()

bool Botan::mlock_allocator::deallocate	(	void *	p,
		size_t	num_elems,
		size_t	elem_size
	)

noexcept

Definition at line 26 of file locking_allocator.cpp.

   {
   if(!m_pool)
      return false;
 
   size_t n = num_elems * elem_size;
 
   /*
   We return nullptr in allocate if there was an overflow, so if an
   overflow occurs here we know the pointer was not allocated by this pool.
   */
   if(n / elem_size != num_elems)
      return false;
 
   return m_pool->deallocate(p, n);
   }

◆ instance()

mlock_allocator & Botan::mlock_allocator::instance ( )

static

Definition at line 69 of file locking_allocator.cpp.

   {
   static mlock_allocator mlock;
   return mlock;
   }

Referenced by Botan::allocate_memory(), Botan::deallocate_memory(), and Botan::initialize_allocator().

◆ operator=()

mlock_allocator & Botan::mlock_allocator::operator= ( const mlock_allocator & )