NAME

ACE_Filecache_Object - Abstraction over a real file. This is what the Virtual Filesystem contains. This class is not intended for general consumption. Please consult a physician before attempting to use this class.

SYNOPSIS

#include <ace/Filecache.h>

class ACE_Filecache_Object { public: friend class ACE_Filecache; ACE_Filecache_Object ( const char *filename, ACE_SYNCH_RW_MUTEX &lock, LPSECURITY_ATTRIBUTES sa = 0, int mapit = 1 ); ACE_Filecache_Object ( const char *filename, int size, ACE_SYNCH_RW_MUTEX &lock, LPSECURITY_ATTRIBUTES sa = 0 ); ~ACE_Filecache_Object (void); int acquire (void); int release (void); int error (void) const; int error ( int error_value, const char *s = "ACE_Filecache_Object" ); const char *filename (void) const; ACE_HANDLE handle (void) const; void *address (void) const; size_t size (void) const; int update (void) const; enum Creation_States{ ACE_READING = 1, ACE_WRITING = 2 }; enum Error_Conditions{ ACE_SUCCESS = 0, ACE_ACCESS_FAILED, ACE_OPEN_FAILED, ACE_COPY_FAILED, ACE_STAT_FAILED, ACE_MEMMAP_FAILED, ACE_WRITE_FAILED }; protected: ACE_Filecache_Object (void); void init (void); private: int error_i ( int error_value, const char *s = "ACE_Filecache_Object" ); char *tempname_; char filename_[MAXPATHLEN + 1]; ACE_Mem_Map mmap_; ACE_HANDLE handle_; size_t size_; int action_; int error_; int stale_; LPSECURITY_ATTRIBUTES sa_; ACE_SYNCH_RW_MUTEX junklock_; ACE_SYNCH_RW_MUTEX &lock_; };

error_ accessors

int error (void) const;

int error (int error_value, const char *s = "ACE_Filecache_Object");

const char *filename (void) const;

ACE_HANDLE handle (void) const;

void *address (void) const;

size_t size (void) const;

int update (void) const;

AUTHOR

James Hu

LIBRARY

ace