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Memory mapped file. More...
#include <FXMappedFile.h>
Public Member Functions | |
| FXMappedFile () | |
| Construct a memory map. | |
| FXptr | open (const FXString &filename, FXuint m=FXIO::Reading, FXuint perm=FXIO::AllReadWrite, FXlong len=0, FXlong off=0) |
| Open a file, and map a view of it into memory; the offset must be a multiple of the page size. | |
| virtual FXbool | isSerial () const |
| Return true if serial access only. | |
| FXptr | data () const |
| Return pointer to memory area. | |
| FXival | length () const |
| Obtain length of the map. | |
| FXlong | offset () const |
| Obtain offset of the map. | |
| virtual FXlong | size () |
| Return size. | |
| virtual FXbool | flush () |
| Flush to disk. | |
| virtual FXbool | close () |
| Close file, and also the map. | |
| virtual | ~FXMappedFile () |
| Destroy the map. | |
 Public Member Functions inherited from FX::FXIODevice | |
| FXIODevice () | |
| Construct. | |
| FXIODevice (FXInputHandle h) | |
| Construct device and attach existing handle h. | |
| FXInputHandle | handle () const |
| Return handle. | |
| virtual FXbool | isOpen () const |
| Return true if open. | |
| virtual FXuint | mode () const |
| Return access mode. | |
| virtual FXbool | mode (FXuint m) |
| Change access mode of open device. | |
| virtual FXuint | perms () const |
| Return permissions. | |
| virtual FXbool | perms (FXuint p) |
| Set permissions. | |
| virtual FXbool | attach (FXInputHandle h) |
| Attach existing device handle, taking ownership of the handle. | |
| virtual FXbool | detach () |
| Detach device handle. | |
| virtual FXival | readBlock (void *ptr, FXival count) |
| Read block of bytes, returning number of bytes read. | |
| virtual FXival | writeBlock (const void *ptr, FXival count) |
| Write block of bytes, returning number of bytes written. | |
| virtual FXlong | truncate (FXlong sz) |
| Truncate file. | |
| virtual FXint | eof () |
| Test if we're at the end; -1 if error. | |
| virtual | ~FXIODevice () |
| Destroy and close. | |
| Public Member Functions inherited from FX::FXIO | |
| virtual FXlong | position () const |
| Get current file position. | |
| virtual FXlong | position (FXlong offset, FXuint from=FXIO::Begin) |
| Change file position, returning new position from start. | |
| FXbool | readChar (FXchar &ch) |
| Read character. | |
| FXbool | writeChar (FXchar ch) |
| Write character. | |
| virtual | ~FXIO () |
| Destroy and close. | |
Static Public Member Functions | |
| static FXival | granularity () |
| Return memory mapping granularity. | |
| Static Public Member Functions inherited from FX::FXIODevice | |
| static FXbool | valid (FXInputHandle hnd) |
| Check handle validity. | |
Additional Inherited Members | |
| Public Types inherited from FX::FXIO | |
| enum | { NoAccess = 0, ReadOnly = 1, WriteOnly = 2, ReadWrite = ReadOnly|WriteOnly, Append = 4, Truncate = 8, Create = 16, Exclusive = 32, NonBlocking = 64, Executable = 128, OwnHandle = 256, NoAccessTime = 512, Inheritable = 1024, Reading = ReadOnly, Writing = ReadWrite|Create|Truncate } |
| Access modes. More... | |
| enum | { Begin = 0, Current = 1, End = 2 } |
| Positioning modes. More... | |
| enum | { OtherExec = 0x00001, OtherWrite = 0x00002, OtherRead = 0x00004, OtherReadWrite = OtherRead|OtherWrite, OtherFull = OtherReadWrite|OtherExec, GroupExec = 0x00008, GroupWrite = 0x00010, GroupRead = 0x00020, GroupReadWrite = GroupRead|GroupWrite, GroupFull = GroupReadWrite|GroupExec, OwnerExec = 0x00040, OwnerWrite = 0x00080, OwnerRead = 0x00100, OwnerReadWrite = OwnerRead|OwnerWrite, OwnerFull = OwnerReadWrite|OwnerExec, AllRead = OtherRead|GroupRead|OwnerRead, AllWrite = OtherWrite|GroupWrite|OwnerWrite, AllExec = OtherExec|GroupExec|OwnerExec, AllReadWrite = AllRead|AllWrite, AllFull = AllReadWrite|AllExec, Hidden = 0x00200, Directory = 0x00400, File = 0x00800, SymLink = 0x01000, SetUser = 0x02000, SetGroup = 0x04000, Sticky = 0x08000, Character = 0x10000, Block = 0x20000, Socket = 0x40000, Fifo = 0x80000 } |
| Permissions. More... | |
| enum | { Error = -1, Again = -2, Broken = -3 } |
| Error return codes for readBlock() and writeBlock() More... | |
| Protected Attributes inherited from FX::FXIODevice | |
| FXInputHandle | device |
Memory mapped file.
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Copyright © 1997-2022 Jeroen van der Zijp
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