NAME

ACE_SV_Shared_Memory - This is a wrapper for System V shared memory.

SYNOPSIS

#include <ace/SV_Shared_Memory.h>

class ACE_SV_Shared_Memory { public: enum{ ACE_CREATE = IPC_CREAT, ACE_OPEN = 0 }; ACE_SV_Shared_Memory (void); ACE_SV_Shared_Memory ( key_t external_id, size_t size, int create, int perms = ACE_DEFAULT_FILE_PERMS, void *virtual_addr = 0, int flags = 0 ); ACE_SV_Shared_Memory (ACE_HANDLE internal_id, int flags = 0); int open ( key_t external_id, size_t size, int create = ACE_SV_Shared_Memory::ACE_OPEN, int perms = ACE_DEFAULT_FILE_PERMS ); int open_and_attach ( key_t external_id, size_t size, int create = ACE_SV_Shared_Memory::ACE_OPEN, int perms = ACE_DEFAULT_FILE_PERMS, void *virtual_addr = 0, int flags = 0 ); int attach (void *virtual_addr = 0, int flags =0); int detach (void); int remove (void); int control (int cmd, void *buf); void *get_segment_ptr (void) const; int get_segment_size (void) const; ACE_HANDLE get_id (void) const; void dump (void) const; ACE_ALLOC_HOOK_DECLARE; protected: enum{ ALIGN_WORDB = 8 }; ACE_HANDLE internal_id_; int size_; void *segment_ptr_; int round_up (size_t len); };

Initialization and termination methods.

ACE_SV_Shared_Memory (void);

ACE_SV_Shared_Memory (
    key_t external_id,
    size_t size,
    int create,
    int perms = ACE_DEFAULT_FILE_PERMS,
    void *virtual_addr = 0,
    int flags = 0
    );

ACE_SV_Shared_Memory (ACE_HANDLE internal_id, int flags = 0);

int open (
    key_t external_id,
    size_t size,
    int create = ACE_SV_Shared_Memory::ACE_OPEN,
    int perms = ACE_DEFAULT_FILE_PERMS
    );

int open_and_attach (
    key_t external_id,
    size_t size,
    int create = ACE_SV_Shared_Memory::ACE_OPEN,
    int perms = ACE_DEFAULT_FILE_PERMS,
    void *virtual_addr = 0,
    int flags = 0
    );

int attach (void *virtual_addr = 0, int flags =0);

int detach (void);

int remove (void);

int control (int cmd, void *buf);

Segment-related info.

void *get_segment_ptr (void) const;

int get_segment_size (void) const;

ACE_HANDLE get_id (void) const;

void dump (void) const;

ACE_ALLOC_HOOK_DECLARE;

AUTHOR

Doug Schmidt

LIBRARY

ace