headers/private/userlandfs/shared/LazyInitializable.h

   1 // LazyInitializable.h
   2
   3 #ifndef USERLAND_FS_LAZY_INITIALIZABLE_H
   4 #define USERLAND_FS_LAZY_INITIALIZABLE_H
   5
   6 #include <OS.h>
   7
   8 namespace UserlandFSUtil {
   9
  10 class LazyInitializable {
  11 public:
  12                                                                 LazyInitializable();
  13                                                                 LazyInitializable(bool init);
  14         virtual                                         ~LazyInitializable();
  15
  16                         status_t                        Access();
  17                         status_t                        InitCheck() const;
  18
  19 protected:
  20         virtual status_t                        FirstTimeInit() = 0;
  21
  22 protected:
  23                         status_t                        fInitStatus;
  24                         sem_id                          fInitSemaphore;
  25 };
  26
  27 } // namespace UserlandFSUtil
  28
  29 using UserlandFSUtil::LazyInitializable;
  30
  31 #endif  // USERLAND_FS_LAZY_INITIALIZABLE_H