#include <ace/ACE_Memory_Pool.h> class ACE_Shared_Memory_Pool : public ACE_Event_Handler {
public:
ACE_Shared_Memory_Pool ( const char *pool_name = ACE_ITOA (ACE_DEFAULT_SHM_KEY) );
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);
virtual int commit_backing_store ( size_t rounded_bytes, off_t &offset );
struct SHM_TABLE {public:
key_t key;
int shmid;
int used;
};
virtual int in_use (off_t &offset, int &counter);
ACE_Sig_Handler signal_handler_;
virtual int handle_signal (int signum, siginfo_t *, ucontext_t *);
ACE_SV_Semaphore_Complex init_finished_;
};
ACE_Shared_Memory_Pool (
const char *pool_name = ACE_ITOA (ACE_DEFAULT_SHM_KEY)
);
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);
this-
base_addr_.
virtual int sync (void *addr, size_t len, int flags = MS_SYNC);
addr_
.
virtual int protect (ssize_t len = -1, int prot = PROT_RDWR);
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);
prot
starting at addr
up to len
bytes.
virtual void dump (void) const;
ACE_ALLOC_HOOK_DECLARE;
virtual size_t round_up (size_t nbytes);
virtual int commit_backing_store (
size_t rounded_bytes,
off_t &offset
);
offset
is set to the new offset into
the backing store.
virtual int in_use (off_t &offset, int &counter);
ACE_Sig_Handler signal_handler_;
virtual int handle_signal (int signum, siginfo_t *, ucontext_t *);
ACE_SV_Semaphore_Complex init_finished_;