NullSemaphore          package:R.filelocks          R Documentation

_T_h_e _N_u_l_l_S_e_m_a_p_h_o_r_e _c_l_a_s_s

_D_e_s_c_r_i_p_t_i_o_n:

     Package:  R.filelocks 
      *Class NullSemaphore*

     'Object'
      '~~|'
      '~~+--''AbstractSemaphore'
      '~~~~~~~|'
      '~~~~~~~+--''NullSemaphore'

     *Directly known subclasses:*


     public static class *NullSemaphore*
      extends _AbstractSemaphore_

     A NullSemaphore is a class that fakes a semaphore, but it is not a
     real semaphore because it is not synchronized with other
     processed, i.e. it can always be aqcuired.

_U_s_a_g_e:

     NullSemaphore(...)

_A_r_g_u_m_e_n_t_s:

     ...: Not used.

_F_i_e_l_d_s _a_n_d _M_e_t_h_o_d_s:

     *Methods:*

         'isAcquired'  -
         'release'     -
         'tryAcquire'  -

     *Methods inherited from AbstractSemaphore*:
      acquire, finalize, release, tryAcquire

     *Methods inherited from Object*:
      $, $<-, [[, [[<-, as.character, attach, attachLocally,
     clearCache, clone, detach, equals, extend, finalize, gc,
     getEnvironment, getFields, getInstantiationTime,
     getStaticInstance, hasField, hashCode, ll, load, objectSize,
     print, save

_A_u_t_h_o_r(_s):

     Henrik Bengtsson (<URL: http://www.braju.com/R/>)

