NAME
ACE_Local_Memory_Pool -
Make a memory pool that is based on C++ new/delete. This is
useful for integrating existing components that use new/delete
into the ACE Malloc scheme...
SYNOPSIS
#include <ace/ACE_Memory_Pool.h>
class ACE_Local_Memory_Pool
{
public:
ACE_Local_Memory_Pool (const char *pool_name = 0);
virtual void *init_acquire (
size_t nbytes,
size_t &rounded_bytes,
int &first_time
);
virtual void *acquire (size_t nbytes, size_t &rounded_bytes);
virtual int release (void);
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;
ACE_ALLOC_HOOK_DECLARE;
protected:
virtual size_t round_up (size_t nbytes);
};
PUBLIC MEMBERS
ACE_Local_Memory_Pool (const char *pool_name = 0);
Initialization constructor.
virtual void *init_acquire (
size_t nbytes,
size_t &rounded_bytes,
int &first_time
);
Ask system for initial chunk of local memory.
virtual void *acquire (size_t nbytes, size_t &rounded_bytes);
Acquire at least NBYTES from the memory pool. ROUNDED_BYTES is
the actual number of bytes allocated.
virtual int release (void);
Instruct the memory pool to release all of its resources.
virtual int sync (ssize_t len = -1, int flags = MS_SYNC);
Sync 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);
Sync len bytes of the memory region to the backing store
starting at addr_.
virtual int protect (ssize_t len = -1, int prot = PROT_RDWR);
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.
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 addr up to len bytes.
virtual void dump (void) const;
Dump the state of an object.
ACE_ALLOC_HOOK_DECLARE;
Declare the dynamic allocation hooks.
PROTECTED MEMBERS
virtual size_t round_up (size_t nbytes);
AUTHOR
Doug Schmidt and Prashant Jain
LIBRARY
ace