ACE_New_Allocator Class Reference

Defines a class that provided a simple implementation of memory allocation. More...

#include <Malloc_Allocator.h>

Inheritance diagram for ACE_New_Allocator:

Collaboration diagram for ACE_New_Allocator:

List of all members.

Public Member Functions
virtual void *	malloc (size_t nbytes)
	These methods are defined.
virtual void *	calloc (size_t nbytes, char initial_value= '\0')
	Allocate nbytes, giving them initial_value.
virtual void *	calloc (size_t n_elem, size_t elem_size, char initial_value= '\0')
virtual void	free (void *ptr)
	Free ptr (must have been allocated by ACE_Allocator::malloc()).
virtual int	remove (void)
	These methods are no-ops.
virtual int	bind (const char *name, void *pointer, int duplicates=0)
virtual int	trybind (const char *name, void *&pointer)
virtual int	find (const char *name, void *&pointer)
virtual int	find (const char *name)
	Returns 0 if the name is in the mapping. -1, otherwise.
virtual int	unbind (const char *name)
virtual int	unbind (const char *name, void *&pointer)
virtual int	sync (ssize_t len=-1, int flags=MS_SYNC)
virtual int	sync (void *addr, size_t len, int flags=MS_SYNC)
virtual int	protect (ssize_t len=-1, int prot=PROT_RDWR)
virtual int	protect (void *addr, size_t len, int prot=PROT_RDWR)
virtual void	dump (void) const
	Dump the state of the object.

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Detailed Description

Defines a class that provided a simple implementation of memory allocation.

This class uses the new/delete operators to allocate and free up memory. Please note that the only methods that are supported are <malloc>, <calloc>, and <free>. All other methods are no-ops that return -1 and set errno to <ENOTSUP>. If you require this functionality, please use: ACE_Allocator_Adapter <ACE_Malloc <ACE_LOCAL_MEMORY_POOL, MUTEX> >, which will allow you to use the added functionality of bind/find/etc. while using the new/delete operators.

Definition at line 54 of file Malloc_Allocator.h.

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Member Function Documentation

int ACE_New_Allocator::bind	(	const char *	name,
		void *	pointer,
		int	duplicates = 0
	)			[virtual]

Associate name with pointer. If duplicates == 0 then do not allow duplicate name/pointer associations, else if duplicates != 0 then allow duplicate name/pointer assocations. Returns 0 if successfully binds (1) a previously unbound name or (2) duplicates != 0, returns 1 if trying to bind a previously bound name and duplicates == 0, else returns -1 if a resource failure occurs.

Implements ACE_Allocator.

Definition at line 153 of file Malloc_Allocator.cpp.

{
  ACE_NOTSUP_RETURN (-1);
}

void * ACE_New_Allocator::calloc	(	size_t	nbytes,
		char	initial_value = '\0'
	)			[virtual]

Allocate nbytes, giving them initial_value.

Implements ACE_Allocator.

Reimplemented in ACE_Cached_Allocator< T, ACE_LOCK >, and ACE_Dynamic_Cached_Allocator< ACE_LOCK >.

Definition at line 123 of file Malloc_Allocator.cpp.

{
  char *ptr = 0;

  ACE_NEW_RETURN (ptr, char[nbytes], 0);

  ACE_OS::memset (ptr, initial_value, nbytes);
  return (void *) ptr;
}

void * ACE_New_Allocator::calloc	(	size_t	n_elem,
		size_t	elem_size,
		char	initial_value = '\0'
	)			[virtual]

Allocate <n_elem> each of size elem_size, giving them initial_value.

Implements ACE_Allocator.

Reimplemented in ACE_Cached_Allocator< T, ACE_LOCK >, and ACE_Dynamic_Cached_Allocator< ACE_LOCK >.

Definition at line 135 of file Malloc_Allocator.cpp.

{
  return ACE_New_Allocator::calloc (n_elem * elem_size, initial_value);
}

void ACE_New_Allocator::dump

(

void

)

const [virtual]

Dump the state of the object.

Implements ACE_Allocator.

Definition at line 220 of file Malloc_Allocator.cpp.

{
#if defined (ACE_HAS_DUMP)
#endif /* ACE_HAS_DUMP */
}

int ACE_New_Allocator::find	(	const char *	name,
		void *&	pointer
	)			[virtual]

Locate name and pass out parameter via pointer. If found, return 0, returns -1 if failure occurs.

Implements ACE_Allocator.

Definition at line 165 of file Malloc_Allocator.cpp.

{
  ACE_NOTSUP_RETURN (-1);
}

int ACE_New_Allocator::find

(

const char *

name

)

[virtual]

Returns 0 if the name is in the mapping. -1, otherwise.

Implements ACE_Allocator.

Definition at line 171 of file Malloc_Allocator.cpp.

{
  ACE_NOTSUP_RETURN (-1);
}

void ACE_New_Allocator::free

(

void *

ptr

)

[virtual]

Free ptr (must have been allocated by ACE_Allocator::malloc()).

Implements ACE_Allocator.

Reimplemented in ACE_Cached_Allocator< T, ACE_LOCK >, and ACE_Dynamic_Cached_Allocator< ACE_LOCK >.

Definition at line 141 of file Malloc_Allocator.cpp.

{
  delete [] (char *) ptr;
}

void * ACE_New_Allocator::malloc

(

size_t

nbytes

)

[virtual]

These methods are defined.

Implements ACE_Allocator.

Reimplemented in ACE_Cached_Allocator< T, ACE_LOCK >, and ACE_Dynamic_Cached_Allocator< ACE_LOCK >.

Definition at line 113 of file Malloc_Allocator.cpp.

{
  char *ptr = 0;

  if (nbytes > 0)
    ACE_NEW_RETURN (ptr, char[nbytes], 0);
  return (void *) ptr;
}

int ACE_New_Allocator::protect	(	void *	addr,
		size_t	len,
		int	prot = PROT_RDWR
	)			[virtual]

Change the protection of the pages of the mapped region to prot starting at addr up to len bytes.

Implements ACE_Allocator.

Definition at line 207 of file Malloc_Allocator.cpp.

{
  ACE_NOTSUP_RETURN (-1);
}

int ACE_New_Allocator::protect	(	ssize_t	len = -1,
		int	prot = PROT_RDWR
	)			[virtual]

Change the protection of the pages of the mapped region to prot starting at <this->base_addr_> up to len bytes. If len == -1 then change protection of all pages in the mapped region.

Implements ACE_Allocator.

Definition at line 201 of file Malloc_Allocator.cpp.

{
  ACE_NOTSUP_RETURN (-1);
}

int ACE_New_Allocator::remove

(

void

)

[virtual]

These methods are no-ops.

Implements ACE_Allocator.

Definition at line 147 of file Malloc_Allocator.cpp.

{
  ACE_NOTSUP_RETURN (-1);
}

int ACE_New_Allocator::sync	(	ssize_t	len = -1,
		int	flags = MS_SYNC
	)			[virtual]

Sync len bytes of the memory region to the backing store starting at this->base_addr_. If len == -1 then sync the whole region.

Implements ACE_Allocator.

Definition at line 189 of file Malloc_Allocator.cpp.

{
  ACE_NOTSUP_RETURN (-1);
}

int ACE_New_Allocator::sync	(	void *	addr,
		size_t	len,
		int	flags = MS_SYNC
	)			[virtual]

Sync len bytes of the memory region to the backing store starting at addr.

Implements ACE_Allocator.

Definition at line 195 of file Malloc_Allocator.cpp.

{
  ACE_NOTSUP_RETURN (-1);
}

int ACE_New_Allocator::trybind	(	const char *	name,
		void *&	pointer
	)			[virtual]

Associate name with pointer. Does not allow duplicate name/pointer associations. Returns 0 if successfully binds (1) a previously unbound name, 1 if trying to bind a previously bound name, or returns -1 if a resource failure occurs. When this call returns pointer's value will always reference the void * that name is associated with. Thus, if the caller needs to use pointer (e.g., to free it) a copy must be maintained by the caller.

Implements ACE_Allocator.

Definition at line 159 of file Malloc_Allocator.cpp.

{
  ACE_NOTSUP_RETURN (-1);
}

int ACE_New_Allocator::unbind	(	const char *	name,
		void *&	pointer
	)			[virtual]

Break any association of name. Returns the value of pointer in case the caller needs to deallocate memory.

Implements ACE_Allocator.

Definition at line 183 of file Malloc_Allocator.cpp.

{
  ACE_NOTSUP_RETURN (-1);
}

int ACE_New_Allocator::unbind

(

const char *

name

)

[virtual]

Unbind (remove) the name from the map. Don't return the pointer to the caller

Implements ACE_Allocator.

Definition at line 177 of file Malloc_Allocator.cpp.

{
  ACE_NOTSUP_RETURN (-1);
}

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The documentation for this class was generated from the following files:

• Malloc_Allocator.h
• Malloc_Allocator.cpp