ACE_Filecache(3)

NAME

ACE_Filecache - A hash table holding the information about entry point into the Cached Virtual Filesystem. On insertion, the reference count is incremented. On destruction, reference count is decremented.

SYNOPSIS

#include <ace/Filecache.h>
class ACE_Filecache
{
  public:
    static ACE_Filecache *instance (void);
    ~ACE_Filecache (void);
    int find (const char *filename);
    ACE_Filecache_Object *fetch (const char *filename, int mapit = 1);
    ACE_Filecache_Object *remove (const char *filename);
    ACE_Filecache_Object *create (const char *filename, int size);
    ACE_Filecache_Object *finish (ACE_Filecache_Object *&new_file);
        enum{ ACE_DEFAULT_VIRTUAL_FILESYSTEM_TABLE_SIZE = 512,
        ACE_DEFAULT_VIRTUAL_FILESYSTEM_CACHE_SIZE = 20 };
        
  protected:
    ACE_Filecache_Object *insert_i (
        const char *filename,
        ACE_SYNCH_RW_MUTEX &filelock,
        int mapit
        );
    ACE_Filecache_Object *remove_i (const char *filename);
    ACE_Filecache_Object *update_i (
        const char *filename,
        ACE_SYNCH_RW_MUTEX &filelock,
        int mapit
        );
    ACE_Filecache (void);
  private:
    int size_;
    ACE_Filecache_Hash hash_;
    static ACE_Filecache *cvf_;
        ACE_SYNCH_RW_MUTEX hash_lock_[ACE_DEFAULT_VIRTUAL_FILESYSTEM_TABLE_SIZE];
        
        ACE_SYNCH_RW_MUTEX file_lock_[ACE_DEFAULT_VIRTUAL_FILESYSTEM_TABLE_SIZE];
        
};

Synchronization variables.

    ACE_SYNCH_RW_MUTEX hash_lock_[ACE_DEFAULT_VIRTUAL_FILESYSTEM_TABLE_SIZE];
    

    ACE_SYNCH_RW_MUTEX file_lock_[ACE_DEFAULT_VIRTUAL_FILESYSTEM_TABLE_SIZE];
    

AUTHOR

James Hu

LIBRARY

ace