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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

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List of all members.

Public Methods

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

virtual void free (void *ptr)
 Free <ptr> (must have been allocated by ).

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)
 Locate <name> and pass out parameter via pointer. If found, return 0, Returns -1 if failure occurs.

virtual int find (const char *name)
 returns 0 if the name is in the mapping. -1, otherwise.

virtual int unbind (const char *name)
 Unbind (remove) the name from the map. Don't return the pointer to the caller.

virtual int unbind (const char *name, void *&pointer)
 Break any association of name. Returns the value of pointer in case the caller needs to deallocate memory.

virtual int sync (ssize_t len = -1, int flags = MS_SYNC)
virtual int sync (void *addr, size_t len, int flags = MS_SYNC)
 Sync <len> bytes of the memory region to the backing store starting at .

virtual int protect (ssize_t len = -1, int prot = PROT_RDWR)
virtual int protect (void *addr, size_t len, int prot = PROT_RDWR)
 Change the protection of the pages of the mapped region to <prot> starting at up to <len> bytes.

virtual void dump (void) const
 Dump the state of the object.


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 >, which will allow you to use the added functionality of bind/find/etc. while using the new/delete operators.


Member Function Documentation

ACE_INLINE 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.

Reimplemented from ACE_Allocator.

ACE_INLINE 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>.

Reimplemented from ACE_Allocator.

Reimplemented in ACE_Cached_Allocator.

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

Allocate <nbytes>, giving them <initial_value>.

Reimplemented from ACE_Allocator.

Reimplemented in ACE_Cached_Allocator.

ACE_INLINE void ACE_New_Allocator::dump ( void ) const [virtual]
 

Dump the state of the object.

Reimplemented from ACE_Allocator.

ACE_INLINE int ACE_New_Allocator::find ( const char * name ) [virtual]
 

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

Reimplemented from ACE_Allocator.

ACE_INLINE 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.

Reimplemented from ACE_Allocator.

ACE_INLINE void ACE_New_Allocator::free ( void * ptr ) [virtual]
 

Free <ptr> (must have been allocated by ).

Reimplemented from ACE_Allocator.

Reimplemented in ACE_Cached_Allocator.

ACE_INLINE void * ACE_New_Allocator::malloc ( size_t nbytes ) [virtual]
 

These methods are defined.

Reimplemented from ACE_Allocator.

Reimplemented in ACE_Cached_Allocator.

ACE_INLINE 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 up to <len> bytes.

Reimplemented from ACE_Allocator.

ACE_INLINE 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.

Reimplemented from ACE_Allocator.

ACE_INLINE int ACE_New_Allocator::remove ( void ) [virtual]
 

These methods are no-ops.

Reimplemented from ACE_Allocator.

ACE_INLINE 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 .

Reimplemented from ACE_Allocator.

ACE_INLINE 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.

Reimplemented from ACE_Allocator.

ACE_INLINE 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.

Reimplemented from ACE_Allocator.

ACE_INLINE 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.

Reimplemented from ACE_Allocator.

ACE_INLINE int ACE_New_Allocator::unbind ( const char * name ) [virtual]
 

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

Reimplemented from ACE_Allocator.


The documentation for this class was generated from the following files:
Generated at Fri Oct 5 07:03:08 2001 for ACE by doxygen1.2.3 written by Dimitri van Heesch, © 1997-2000