NAME

ACE_Shared_Memory_MM - Shared memory wrapper based on MMAP.

SYNOPSIS

#include <ace/Shared_Memory_MM.h>

class ACE_Shared_Memory_MM : public ACE_Shared_Memory { public: ACE_Shared_Memory_MM (void); ACE_Shared_Memory_MM ( ACE_HANDLE handle, int length = -1, int prot = PROT_RDWR, int share = ACE_MAP_PRIVATE, char *addr = 0, off_t pos = 0 ); ACE_Shared_Memory_MM ( LPCTSTR file_name, int len = -1, int flags = O_RDWR | O_CREAT, int mode = ACE_DEFAULT_FILE_PERMS, int prot = PROT_RDWR, int share = ACE_MAP_SHARED, char *addr = 0, off_t pos = 0 ); int open ( ACE_HANDLE handle, int length = -1, int prot = PROT_RDWR, int share = ACE_MAP_PRIVATE, char *addr = 0, off_t pos = 0 ); int open ( LPCTSTR file_name, int len = -1, int flags = O_RDWR | O_CREAT, int mode = ACE_DEFAULT_FILE_PERMS, int prot = PROT_RDWR, int share = ACE_MAP_SHARED, char *addr = 0, off_t pos = 0 ); const TCHAR *filename (void) const; virtual int close (void); virtual int remove (void); virtual void *malloc (size_t size = 0); virtual int free (void *p); virtual int get_segment_size (void) const; virtual ACE_HANDLE get_id (void) const; void dump (void) const; ACE_ALLOC_HOOK_DECLARE; private: ACE_Mem_Map shared_memory_; };

DESCRIPTION

This class provides a very simple-minded shared memory manager. For more a powerful memory allocator please see ACE_Malloc.

Initialization and termination methods.

ACE_Shared_Memory_MM (void);

ACE_Shared_Memory_MM (
    ACE_HANDLE handle,
    int length = -1,
    int prot = PROT_RDWR,
    int share = ACE_MAP_PRIVATE,
    char *addr = 0,
    off_t pos = 0
    );

ACE_Shared_Memory_MM (
    LPCTSTR file_name,
    int len = -1,
    int flags = O_RDWR | O_CREAT,
    int mode = ACE_DEFAULT_FILE_PERMS,
    int prot = PROT_RDWR,
    int share = ACE_MAP_SHARED,
    char *addr = 0,
    off_t pos = 0
    );

int open (
    ACE_HANDLE handle,
    int length = -1,
    int prot = PROT_RDWR,
    int share = ACE_MAP_PRIVATE,
    char *addr = 0,
    off_t pos = 0
    );

int open (
    LPCTSTR file_name,
    int len = -1,
    int flags = O_RDWR | O_CREAT,
    int mode = ACE_DEFAULT_FILE_PERMS,
    int prot = PROT_RDWR,
    int share = ACE_MAP_SHARED,
    char *addr = 0,
    off_t pos = 0
    );

const TCHAR *filename (void) const;

virtual int close (void);

virtual int remove (void);

Allocation and deallocation methods.

virtual void *malloc (size_t size = 0);

virtual int free (void *p);

virtual int get_segment_size (void) const;

virtual ACE_HANDLE get_id (void) const;

void dump (void) const;

ACE_ALLOC_HOOK_DECLARE;

AUTHOR

Doug Schmidt

LIBRARY

ace