#include <ace/Malloc.h >
class ACE_Allocator {
public:
static ACE_Allocator *instance (void);
static ACE_Allocator *instance (ACE_Allocator *);
static void close_singleton (void);
virtual ~ACE_Allocator (void);
virtual void *malloc (size_t nbytes) = 0;
virtual void *calloc ( size_t nbytes, char initial_value = ' ' ) = 0;
virtual void free (void *ptr) = 0;
virtual int remove (void) = 0;
virtual int bind ( const char *name, void *pointer, int duplicates = 0 ) = 0;
virtual int trybind (const char *name, void *&pointer) = 0;
virtual int find (const char *name, void *&pointer) = 0;
virtual int find (const char *name) = 0;
virtual int unbind (const char *name) = 0;
virtual int unbind (const char *name, void *&pointer) = 0;
virtual int sync (ssize_t len = -1, int flags = MS_SYNC) = 0;
virtual int sync ( void *addr, size_t len, int flags = MS_SYNC ) = 0;
virtual int protect (ssize_t len = -1, int prot = PROT_RDWR) = 0;
virtual int protect ( void *addr, size_t len, int prot = PROT_RDWR ) = 0;
virtual void print_stats (void) const = 0;
virtual void dump (void) const = 0;
private:
static ACE_Allocator *allocator_;
static int delete_allocator_;
};
static ACE_Allocator *instance (void);
ACE_Allocator
.
static ACE_Allocator *instance (ACE_Allocator *);
ACE_Allocator
and return existing
pointer.
static void close_singleton (void);
virtual ~ACE_Allocator (void);
virtual void *malloc (size_t nbytes) = 0;
nbytes
, but don't give them any initial value.
virtual void *calloc (size_t nbytes, char initial_value = ' ') = 0;
nbytes
, giving them initial_value
.
virtual void free (void *ptr) = 0;
ptr
(must have been allocated by ACE_Allocator::malloc
).
virtual int remove (void) = 0;
virtual int bind (
const char *name,
void *pointer,
int duplicates = 0
) = 0;
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.
virtual int trybind (const char *name, void *&pointer) = 0;
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.
virtual int find (const char *name, void *&pointer) = 0;
name
and pass out parameter via pointer. If found,
return 0, Returns -1 if failure occurs.
virtual int find (const char *name) = 0;
virtual int unbind (const char *name) = 0;
virtual int unbind (const char *name, void *&pointer) = 0;
virtual int sync (ssize_t len = -1, int flags = MS_SYNC) = 0;
len
bytes of the memory region to the backing store
starting at this-
base_addr_. If len
== -1 then sync the
whole region.
virtual int sync (void *addr, size_t len, int flags = MS_SYNC) = 0;
len
bytes of the memory region to the backing store
starting at addr_
.
virtual int protect (ssize_t len = -1, int prot = PROT_RDWR) = 0;
prot
starting at this-
base_addr_ up to len
bytes. If len
== -1
then change protection of all pages in the mapped region.
virtual int protect (
void *addr,
size_t len,
int prot = PROT_RDWR
) = 0;
prot
starting at addr
up to len
bytes.
virtual void print_stats (void) const = 0;
virtual void dump (void) const = 0;