Public Methods |
| ACE_Mem_Map (void) |
| Default constructor.
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| ACE_Mem_Map (ACE_HANDLE handle, int length = -1, int prot = PROT_RDWR, int share = ACE_MAP_PRIVATE, void *addr = 0, off_t offset = 0, LPSECURITY_ATTRIBUTES sa = 0) |
| Map a file from an open file descriptor <handle>. This function will lookup the length of the file if it is not given.
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| ACE_Mem_Map (const ACE_TCHAR *filename, int len = -1, int flags = O_RDWR | O_CREAT, int mode = ACE_DEFAULT_FILE_PERMS, int prot = PROT_RDWR, int share = ACE_MAP_PRIVATE, void *addr = 0, off_t offset = 0, LPSECURITY_ATTRIBUTES sa = 0) |
| Map a file specified by <file_name>.
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int | map (ACE_HANDLE handle, int length = -1, int prot = PROT_RDWR, int share = ACE_MAP_PRIVATE, void *addr = 0, off_t offset = 0, LPSECURITY_ATTRIBUTES sa = 0) |
| Map a file from an open file descriptor <handle>. This function will lookup the length of the file if it is not given.
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int | map (int length = -1, int prot = PROT_RDWR, int share = ACE_MAP_PRIVATE, void *addr = 0, off_t offset = 0, LPSECURITY_ATTRIBUTES sa = 0) |
| Remap the file associated with <handle_>.
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int | map (const ACE_TCHAR *filename, int len = -1, int flags = O_RDWR | O_CREAT, int mode = ACE_DEFAULT_FILE_PERMS, int prot = PROT_RDWR, int share = ACE_MAP_PRIVATE, void *addr = 0, off_t offset = 0, LPSECURITY_ATTRIBUTES sa = 0) |
| Map a file specified by <filename>.
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| ~ACE_Mem_Map (void) |
| Destructor.
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int | open (const ACE_TCHAR *filename, int flags = O_RDWR | O_CREAT, int mode = ACE_DEFAULT_FILE_PERMS, LPSECURITY_ATTRIBUTES sa = 0) |
| Open the file without mapping it.
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int | close (void) |
| Close down the <handle_> if necessary and unmap the mapping.
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int | close_handle (void) |
| Close down the <handle_> if necessary.
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int | close_filemapping_handle (void) |
int | operator() (void *&addr) |
| This operator passes back the starting address of the mapped file.
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void* | addr (void) const |
| Return the base address.
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size_t | size (void) const |
| This function returns the number of bytes currently mapped in the file.
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int | unmap (int len = -1) |
| Unmap the region starting at <base_addr_>.
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int | unmap (void *addr, int len) |
| Unmap the region starting at .
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int | sync (ssize_t len = -1, int flags = MS_SYNC) |
int | sync (void *addr, size_t len, int flags = MS_SYNC) |
| Sync <len> bytes of the memory region to the backing store starting at .
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int | protect (ssize_t len = -1, int prot = PROT_RDWR) |
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 up to <len> bytes.
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int | remove (void) |
| Close and remove the file from the file system.
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int | advise (int behavior, int len = -1) |
| Hook into the underlying VM system.
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ACE_HANDLE | handle (void) const |
| Return the underlying <handle_>.
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const ACE_TCHAR* | filename (void) const |
| Return the name of file that is mapped (if any).
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void | dump (void) const |
| Dump the state of an object.
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Public Attributes |
| ACE_ALLOC_HOOK_DECLARE |
| Declare the dynamic allocation hooks.
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Private Methods |
int | map_it (ACE_HANDLE handle, int len = -1, int prot = PROT_RDWR, int share = MAP_SHARED, void *addr = 0, off_t offset = 0, LPSECURITY_ATTRIBUTES sa = 0) |
| This method does the dirty work of actually calling mmap to map the file into memory.
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| ACE_Mem_Map (const ACE_Mem_Map &) |
void | operator= (const ACE_Mem_Map &) |
Private Attributes |
void* | base_addr_ |
| Base address of the memory-mapped file.
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ACE_TCHAR | filename_ [MAXPATHLEN + 1] |
| Name of the file that is mapped.
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size_t | length_ |
| Length of the mapping.
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ACE_HANDLE | handle_ |
| HANDLE for the open file.
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ACE_HANDLE | file_mapping_ |
| HANDLE for the open mapping.
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int | close_handle_ |
| Keeps track of whether we need to close the handle. This is set if we opened the file.
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This class works with both the mmap(2) UNIX system and the Win32 family of memory mapping system calls.