ACE/ace/Test_and_Set.cpp

   1 #ifndef ACE_TEST_AND_SET_CPP
   2 #define ACE_TEST_AND_SET_CPP
   3
   4 #include "ace/Test_and_Set.h"
   5 #include "ace/Guard_T.h"
   6
   7 #if !defined (ACE_LACKS_PRAGMA_ONCE)
   8 # pragma once
   9 #endif /* ACE_LACKS_PRAGMA_ONCE */
  10
  11 ACE_BEGIN_VERSIONED_NAMESPACE_DECL
  12
  13 template <class ACE_LOCK, class TYPE>
  14 ACE_Test_and_Set<ACE_LOCK, TYPE>::ACE_Test_and_Set (TYPE initial_value)
  15   : is_set_ (initial_value)
  16 {
  17 }
  18
  19 // Returns true if we are done, else false.
  20 template <class ACE_LOCK, class TYPE> TYPE
  21 ACE_Test_and_Set<ACE_LOCK, TYPE>::is_set () const
  22 {
  23   ACE_GUARD_RETURN (ACE_LOCK, ace_mon, (ACE_LOCK &) this->lock_, this->is_set_);
  24   return this->is_set_;
  25 }
  26
  27 // Sets the <is_set_> status.
  28 template <class ACE_LOCK, class TYPE> TYPE
  29 ACE_Test_and_Set<ACE_LOCK, TYPE>::set (TYPE status)
  30 {
  31   ACE_GUARD_RETURN (ACE_LOCK, ace_mon, this->lock_, this->is_set_);
  32   TYPE o_status = this->is_set_;
  33   this->is_set_ = status;
  34   return o_status;
  35 }
  36
  37 template <class ACE_LOCK, class TYPE> int
  38 ACE_Test_and_Set<ACE_LOCK, TYPE>::handle_signal (int, siginfo_t *, ucontext_t *)
  39 {
  40   // By setting this to 1, we are "signaling" to anyone calling
  41   // <is_set> or or <set> that the "test and set" object is in the
  42   // "signaled" state, i.e., it's "available" to be set back to 0.
  43   this->set (1);
  44   return 0;
  45 }
  46
  47 ACE_END_VERSIONED_NAMESPACE_DECL
  48
  49 #endif /* ACE_TEST_AND_SET_CPP */