ACE  6.2.3
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ACE_Test_and_Set< ACE_LOCK, TYPE > Class Template Reference

Implements the classic ``test and set'' operation. More...

#include <Test_and_Set.h>

Inheritance diagram for ACE_Test_and_Set< ACE_LOCK, TYPE >:
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Collaboration diagram for ACE_Test_and_Set< ACE_LOCK, TYPE >:
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Public Member Functions

 ACE_Test_and_Set (TYPE initial_value=0)
 
TYPE is_set (void) const
 Returns true if we are set, else false. More...
 
TYPE set (TYPE)
 
virtual int handle_signal (int signum, siginfo_t *=0, ucontext_t *=0)
 
- Public Member Functions inherited from ACE_Event_Handler
virtual ~ACE_Event_Handler (void)
 Destructor is virtual to enable proper cleanup. More...
 
virtual ACE_HANDLE get_handle (void) const
 Get the I/O handle. More...
 
virtual void set_handle (ACE_HANDLE)
 Set the I/O handle. More...
 
virtual int priority (void) const
 
virtual void priority (int priority)
 Set the priority of the Event_Handler. More...
 
virtual int handle_input (ACE_HANDLE fd=ACE_INVALID_HANDLE)
 Called when input events occur (e.g., connection or data). More...
 
virtual int handle_output (ACE_HANDLE fd=ACE_INVALID_HANDLE)
 
virtual int handle_exception (ACE_HANDLE fd=ACE_INVALID_HANDLE)
 Called when an exceptional events occur (e.g., SIGURG). More...
 
virtual int handle_timeout (const ACE_Time_Value &current_time, const void *act=0)
 
virtual int handle_exit (ACE_Process *)
 Called when a process exits. More...
 
virtual int handle_close (ACE_HANDLE handle, ACE_Reactor_Mask close_mask)
 
virtual int resume_handler (void)
 
virtual int handle_qos (ACE_HANDLE=ACE_INVALID_HANDLE)
 
virtual int handle_group_qos (ACE_HANDLE=ACE_INVALID_HANDLE)
 
virtual void reactor (ACE_Reactor *reactor)
 Set the event demultiplexors. More...
 
virtual ACE_Reactorreactor (void) const
 Get the event demultiplexors. More...
 
virtual
ACE_Reactor_Timer_Interface
reactor_timer_interface (void) const
 Get only the reactor's timer related interface. More...
 
virtual Reference_Count add_reference (void)
 Increment reference count on the handler. More...
 
virtual Reference_Count remove_reference (void)
 Decrement reference count on the handler. More...
 
Reference_Counting_Policyreference_counting_policy (void)
 Current Reference_Counting_Policy. More...
 

Private Attributes

TYPE is_set_
 Keeps track of our state. More...
 
ACE_LOCK lock_
 Protect the state from race conditions. More...
 

Additional Inherited Members

- Public Types inherited from ACE_Event_Handler
enum  {
  LO_PRIORITY = 0, HI_PRIORITY = 10, NULL_MASK = 0, READ_MASK = (1 << 0),
  WRITE_MASK = (1 << 1), EXCEPT_MASK = (1 << 2), ACCEPT_MASK = (1 << 3), CONNECT_MASK = (1 << 4),
  TIMER_MASK = (1 << 5), QOS_MASK = (1 << 6), GROUP_QOS_MASK = (1 << 7), SIGNAL_MASK = (1 << 8),
  ALL_EVENTS_MASK, RWE_MASK, DONT_CALL = (1 << 9)
}
 
enum  { ACE_EVENT_HANDLER_NOT_RESUMED = -1, ACE_REACTOR_RESUMES_HANDLER = 0, ACE_APPLICATION_RESUMES_HANDLER }
 
typedef long Reference_Count
 Reference count type. More...
 
- Static Public Member Functions inherited from ACE_Event_Handler
static ACE_THR_FUNC_RETURN read_adapter (void *event_handler)
 
static int register_stdin_handler (ACE_Event_Handler *eh, ACE_Reactor *reactor, ACE_Thread_Manager *thr_mgr, int flags=THR_DETACHED)
 
static int remove_stdin_handler (ACE_Reactor *reactor, ACE_Thread_Manager *thr_mgr)
 Performs the inverse of the register_stdin_handler() method. More...
 
- Protected Types inherited from ACE_Event_Handler
typedef ACE_Atomic_Op
< ACE_SYNCH_MUTEX,
Reference_Count
Atomic_Reference_Count
 Typedef for implementation of reference counting. More...
 
- Protected Member Functions inherited from ACE_Event_Handler
 ACE_Event_Handler (ACE_Reactor *=0, int priority=ACE_Event_Handler::LO_PRIORITY)
 Force ACE_Event_Handler to be an abstract base class. More...
 
- Protected Attributes inherited from ACE_Event_Handler
Atomic_Reference_Count reference_count_
 Reference count. More...
 

Detailed Description

template<class ACE_LOCK, class TYPE>
class ACE_Test_and_Set< ACE_LOCK, TYPE >

Implements the classic ``test and set'' operation.

This class keeps track of the status of <is_set_>, which can be set based on various events (such as receipt of a signal). This class is derived from ACE_Event_Handler so that it can be "signaled" by a Reactor when a signal occurs. We assume that <TYPE> is a data type that can be assigned the value 0 or 1.

Constructor & Destructor Documentation

template<class ACE_LOCK , class TYPE >
ACE_Test_and_Set< ACE_LOCK, TYPE >::ACE_Test_and_Set ( TYPE  initial_value = 0)

Member Function Documentation

template<class ACE_LOCK , class TYPE >
int ACE_Test_and_Set< ACE_LOCK, TYPE >::handle_signal ( int  signum,
siginfo_t = 0,
ucontext_t = 0 
)
virtual

Called when object is signaled by OS (either via UNIX signals or when a Win32 object becomes signaled).

Reimplemented from ACE_Event_Handler.

template<class ACE_LOCK , class TYPE >
TYPE ACE_Test_and_Set< ACE_LOCK, TYPE >::is_set ( void  ) const

Returns true if we are set, else false.

template<class ACE_LOCK , class TYPE >
TYPE ACE_Test_and_Set< ACE_LOCK, TYPE >::set ( TYPE  status)

Sets the <is_set_> status, returning the original value of <is_set_>.

Member Data Documentation

template<class ACE_LOCK , class TYPE >
TYPE ACE_Test_and_Set< ACE_LOCK, TYPE >::is_set_
private

Keeps track of our state.

template<class ACE_LOCK , class TYPE >
ACE_LOCK ACE_Test_and_Set< ACE_LOCK, TYPE >::lock_
private

Protect the state from race conditions.


The documentation for this class was generated from the following files: