This commit was manufactured by cvs2svn to create tag 'TAO-1_4_2'.TAO-1_4_2

1 files changed, 0 insertions, 563 deletions

diff --git a/ace/Reactor_Impl.h b/ace/Reactor_Impl.h
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--- a/ace/Reactor_Impl.h
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@@ -1,563 +0,0 @@
-/* -*- C++ -*- */
-
-//=============================================================================
-/**
- *  @file    Reactor_Impl.h
- *
- *  $Id$
- *
- *  @author Irfan Pyarali
- */
-//=============================================================================
-
-
-#ifndef ACE_REACTOR_IMPL_H
-#define ACE_REACTOR_IMPL_H
-#include /**/ "ace/pre.h"
-
-// Timer Queue is a complicated template class. A simple forward
-// declaration will not work
-#include "ace/Timer_Queuefwd.h"
-
-#if !defined (ACE_LACKS_PRAGMA_ONCE)
-# pragma once
-#endif /* ACE_LACKS_PRAGMA_ONCE */
-
-// Event_Handler.h contains the definition of ACE_Reactor_Mask
-#include "ace/Event_Handler.h"
-#include "ace/Time_Value.h"
-
-// Forward decls
-class ACE_Handle_Set;
-class ACE_Reactor_Impl;
-class ACE_Sig_Action;
-class ACE_Sig_Handler;
-class ACE_Sig_Set;
-
-/**
- * @class ACE_Reactor_Notify
- *
- * @brief Abstract class for unblocking an <ACE_Reactor_Impl> from its
- * event loop.
- */
-class ACE_Export ACE_Reactor_Notify : public ACE_Event_Handler
-{
-public:
-  // = Initialization and termination methods.
-  virtual int open (ACE_Reactor_Impl *,
-                    ACE_Timer_Queue *timer_queue = 0,
-                    int disable_notify = 0) = 0;
-  virtual int close (void) = 0;
-
-  /**
-   * Called by a thread when it wants to unblock the <Reactor_Impl>.
-   * This wakeups the <Reactor_Impl> if currently blocked.  Pass over
-   * both the <Event_Handler> *and* the <mask> to allow the caller to
-   * dictate which <Event_Handler> method the <Reactor_Impl> will
-   * invoke.  The <ACE_Time_Value> indicates how long to blocking
-   * trying to notify the <Reactor_Impl>.  If <timeout> == 0, the
-   * caller will block until action is possible, else will wait until
-   * the relative time specified in *<timeout> elapses).
-   */
-  virtual int notify (ACE_Event_Handler * = 0,
-                      ACE_Reactor_Mask = ACE_Event_Handler::EXCEPT_MASK,
-                      ACE_Time_Value * = 0) = 0;
-
-  /// Handles pending threads (if any) that are waiting to unblock the
-  /// <Reactor_Impl>.
-  virtual int dispatch_notifications (int &number_of_active_handles,
-                                      ACE_Handle_Set &rd_mask) = 0;
-
-  /// Returns the ACE_HANDLE of the notify pipe on which the reactor
-  /// is listening for notifications so that other threads can unblock
-  /// the <Reactor_Impl>
-  virtual ACE_HANDLE notify_handle (void) = 0;
-
-  /// Verify whether the buffer has dispatchable info  or not.
-  virtual int is_dispatchable (ACE_Notification_Buffer &buffer)= 0;
-
-  /// Handle one of the notify call on the <handle>. This could be
-  /// because of a thread trying to unblock the <Reactor_Impl>
-  virtual int dispatch_notify (ACE_Notification_Buffer &buffer) = 0;
-
-  /// Read one of the notify call on the <handle> into the
-  /// <buffer>. This could be because of a thread trying to unblock
-  /// the <Reactor_Impl>
-  virtual int read_notify_pipe (ACE_HANDLE handle,
-                                ACE_Notification_Buffer &buffer) = 0;
-  /**
-   * Set the maximum number of times that the <handle_input> method
-   * will iterate and dispatch the <ACE_Event_Handlers> that are
-   * passed in via the notify queue before breaking out of the event
-   * loop.  By default, this is set to -1, which means "iterate until
-   * the queue is empty."  Setting this to a value like "1 or 2" will
-   * increase "fairness" (and thus prevent starvation) at the expense
-   * of slightly higher dispatching overhead.
-   */
-  virtual void max_notify_iterations (int) = 0;
-
-  /**
-   * Get the maximum number of times that the <handle_input> method
-   * will iterate and dispatch the <ACE_Event_Handlers> that are
-   * passed in via the notify queue before breaking out of its event
-   * loop.
-   */
-  virtual int max_notify_iterations (void) = 0;
-
-  /**
-   * Purge any notifications pending in this reactor for the specified
-   * <ACE_Event_Handler> object. Returns the number of notifications
-   * purged. Returns -1 on error.
-   */
-  virtual int purge_pending_notifications (ACE_Event_Handler * = 0,
-                                           ACE_Reactor_Mask    = ACE_Event_Handler::ALL_EVENTS_MASK) = 0;
-
-  /// Dump the state of an object.
-  virtual void dump (void) const = 0;
-};
-
-/**
- * @class ACE_Reactor_Impl
- *
- * @brief An abstract class for implementing the Reactor Pattern.
- */
-class ACE_Export ACE_Reactor_Impl
-{
-public:
-  /// Close down and release all resources.
-  virtual ~ACE_Reactor_Impl (void) {}
-
-  /// Initialization.
-  virtual int open (size_t size,
-                    int restart = 0,
-                    ACE_Sig_Handler * = 0,
-                    ACE_Timer_Queue * = 0,
-                    int disable_notify_pipe = 0,
-                    ACE_Reactor_Notify * = 0) = 0;
-
-  /**
-   * Returns 0, if the size of the current message has been put in
-   * <size> Returns -1, if not.  ACE_HANDLE allows the reactor to
-   * check if the caller is valid.
-   */
-  virtual int current_info (ACE_HANDLE, size_t & /* size */) = 0;
-
-  /// Use a user specified signal handler instead.
-  virtual int set_sig_handler (ACE_Sig_Handler *signal_handler) = 0;
-
-  /// Set a user-specified timer queue.
-  virtual int timer_queue (ACE_Timer_Queue *tq) = 0;
-
-  /// Return the current <ACE_Timer_Queue>.
-  virtual ACE_Timer_Queue *timer_queue (void) const = 0;
-
-  /// Close down and release all resources.
-  virtual int close (void) = 0;
-
-  // = Event loop drivers.
-  /**
-   * Returns non-zero if there are I/O events "ready" for dispatching,
-   * but does not actually dispatch the event handlers.  By default,
-   * don't block while checking this, i.e., "poll".
-   */
-  virtual int work_pending (const ACE_Time_Value &max_wait_time =  ACE_Time_Value::zero)  = 0;
-
-  /**
-   * This event loop driver blocks for up to <max_wait_time> before
-   * returning.  It will return earlier if events occur.  Note that
-   * <max_wait_time> can be 0, in which case this method blocks
-   * indefinitely until events occur.
-   *
-   * <max_wait_time> is decremented to reflect how much time this call
-   * took.  For instance, if a time value of 3 seconds is passed to
-   * handle_events and an event occurs after 2 seconds,
-   * <max_wait_time> will equal 1 second.  This can be used if an
-   * application wishes to handle events for some fixed amount of
-   * time.
-   *
-   * Returns the total number of <ACE_Event_Handler>s that were
-   * dispatched, 0 if the <max_wait_time> elapsed without dispatching
-   * any handlers, or -1 if an error occurs.
-   *
-   * The only difference between <alertable_handle_events> and
-   * <handle_events> is that in the alertable case, the eventloop will
-   * return when the system queues an I/O completion routine or an
-   * Asynchronous Procedure Call.
-   */
-  virtual int handle_events (ACE_Time_Value *max_wait_time = 0) = 0;
-  virtual int alertable_handle_events (ACE_Time_Value *max_wait_time = 0) = 0;
-
-  /**
-   * This method is just like the one above, except the
-   * <max_wait_time> value is a reference and can therefore never be
-   * NULL.
-   *
-   * The only difference between <alertable_handle_events> and
-   * <handle_events> is that in the alertable case, the eventloop will
-   * return when the system queues an I/O completion routine or an
-   * Asynchronous Procedure Call.
-   */
-  virtual int handle_events (ACE_Time_Value &max_wait_time) = 0;
-  virtual int alertable_handle_events (ACE_Time_Value &max_wait_time) = 0;
-
-  // = Event handling control.
-
-  /**
-   * Return the status of Reactor.  If this function returns 0, the reactor is
-   * actively handling events.  If it returns non-zero, <handling_events> and
-   * <handle_alertable_events> return -1 immediately.
-   */
-  virtual int deactivated (void) = 0;
-
-  /**
-   * Control whether the Reactor will handle any more incoming events or not.
-   * If <do_stop> == 1, the Reactor will be disabled.  By default, a reactor
-   * is in active state and can be deactivated/reactived as wish.
-   */
-  virtual void deactivate (int do_stop) = 0;
-
-  // = Register and remove Handlers.
-
-  /// Register <event_handler> with <mask>.  The I/O handle will always
-  /// come from <get_handle> on the <event_handler>.
-  virtual int register_handler (ACE_Event_Handler *event_handler,
-                                ACE_Reactor_Mask mask) = 0;
-
-  /// Register <event_handler> with <mask>.  The I/O handle is provided
-  /// through the <io_handle> parameter.
-  virtual int register_handler (ACE_HANDLE io_handle,
-                                ACE_Event_Handler *event_handler,
-                                ACE_Reactor_Mask mask) = 0;
-
-#if defined (ACE_WIN32)
-
-  // Originally this interface was available for all platforms, but
-  // because ACE_HANDLE is an int on non-Win32 platforms, compilers
-  // are not able to tell the difference between
-  // register_handler(ACE_Event_Handler*,ACE_Reactor_Mask) and
-  // register_handler(ACE_Event_Handler*,ACE_HANDLE). Therefore, we
-  // have restricted this method to Win32 only.
-
-  /**
-   * Register an <event_handler> that will be notified when
-   * <event_handle> is signaled.  Since no event mask is passed
-   * through this interface, it is assumed that the <event_handle>
-   * being passed in is an event handle and not an I/O handle.
-   */
-  virtual int register_handler (ACE_Event_Handler *event_handler,
-                                ACE_HANDLE event_handle = ACE_INVALID_HANDLE) = 0;
-
-#endif /* ACE_WIN32 */
-
-  /**
-   * Register an <event_handler> that will be notified when
-   * <event_handle> is signaled.  <mask> specifies the network events
-   * that the <event_handler> is interested in.
-   */
-  virtual int register_handler (ACE_HANDLE event_handle,
-                                ACE_HANDLE io_handle,
-                                ACE_Event_Handler *event_handler,
-                                ACE_Reactor_Mask mask) = 0;
-
-  /// Register <event_handler> with all the <handles> in the <Handle_Set>.
-  virtual int register_handler (const ACE_Handle_Set &handles,
-                                ACE_Event_Handler *event_handler,
-                                ACE_Reactor_Mask mask) = 0;
-
-  /**
-   * Register <new_sh> to handle the signal <signum> using the
-   * <new_disp>.  Returns the <old_sh> that was previously registered
-   * (if any), along with the <old_disp> of the signal handler.
-   */
-  virtual int register_handler (int signum,
-                                ACE_Event_Handler *new_sh,
-                                ACE_Sig_Action *new_disp = 0,
-                                ACE_Event_Handler **old_sh = 0,
-                                ACE_Sig_Action *old_disp = 0) = 0;
-
-  /// Registers <new_sh> to handle a set of signals <sigset> using the
-  /// <new_disp>.
-  virtual int register_handler (const ACE_Sig_Set &sigset,
-                                ACE_Event_Handler *new_sh,
-                                ACE_Sig_Action *new_disp = 0) = 0;
-
-  /**
-   * Removes <event_handler>.  Note that the I/O handle will be
-   * obtained using <get_handle> method of <event_handler> .  If
-   * <mask> == <ACE_Event_Handler::DONT_CALL> then the <handle_close>
-   * method of the <event_handler> is not invoked.
-   */
-  virtual int remove_handler (ACE_Event_Handler *event_handler,
-                              ACE_Reactor_Mask mask) = 0;
-
-  /**
-   * Removes <handle>.  If <mask> == <ACE_Event_Handler::DONT_CALL>
-   * then the <handle_close> method of the associated <event_handler>
-   * is not invoked.
-   */
-  virtual int remove_handler (ACE_HANDLE handle,
-                              ACE_Reactor_Mask mask) = 0;
-
-  /**
-   * Removes all handles in <handle_set>.  If <mask> ==
-   * <ACE_Event_Handler::DONT_CALL> then the <handle_close> method of
-   * the associated <event_handler>s is not invoked.
-   */
-  virtual int remove_handler (const ACE_Handle_Set &handle_set,
-                              ACE_Reactor_Mask mask) = 0;
-
-  /**
-   * Remove the ACE_Event_Handler currently associated with <signum>.
-   * Install the new disposition (if given) and return the previous
-   * disposition (if desired by the caller).  Returns 0 on success and
-   * -1 if <signum> is invalid.
-   */
-  virtual int remove_handler (int signum,
-                              ACE_Sig_Action *new_disp,
-                              ACE_Sig_Action *old_disp = 0,
-                              int sigkey = -1) = 0;
-
-  /// Calls <remove_handler> for every signal in <sigset>.
-  virtual int remove_handler (const ACE_Sig_Set &sigset) = 0;
-
-  // = Suspend and resume Handlers.
-
-  /// Suspend <event_handler> temporarily.  Use
-  /// <ACE_Event_Handler::get_handle> to get the handle.
-  virtual int suspend_handler (ACE_Event_Handler *event_handler) = 0;
-
-  /// Suspend <handle> temporarily.
-  virtual int suspend_handler (ACE_HANDLE handle) = 0;
-
-  /// Suspend all <handles> in handle set temporarily.
-  virtual int suspend_handler (const ACE_Handle_Set &handles) = 0;
-
-  /// Suspend all <handles> temporarily.
-  virtual int suspend_handlers (void) = 0;
-
-  /// Resume <event_handler>. Use <ACE_Event_Handler::get_handle> to
-  /// get the handle.
-  virtual int resume_handler (ACE_Event_Handler *event_handler) = 0;
-
-  /// Resume <handle>.
-  virtual int resume_handler (ACE_HANDLE handle) = 0;
-
-  /// Resume all <handles> in handle set.
-  virtual int resume_handler (const ACE_Handle_Set &handles) = 0;
-
-  /// Resume all <handles>.
-  virtual int resume_handlers (void) = 0;
-
-  /// Does the reactor allow the application to resume the handle on
-  /// its own ie. can it pass on the control of handle resumption to
-  /// the application
-  virtual int resumable_handler (void) = 0;
-
-  /// Return 1 if we any event associations were made by the reactor
-  /// for the handles that it waits on, 0 otherwise.
-  virtual int uses_event_associations (void) = 0;
-
-  // If we need to reset handles returned from accept/connect.
-
-  // = Timer management.
-
-  /**
-   * Schedule an ACE_Event_Handler that will expire after an amount
-   * of time.  The return value of this method, a timer_id value,
-   * uniquely identifies the event_handler in the ACE_Reactor's
-   * internal list of timers.
-   * This timer_id value can be used to cancel the timer
-   * with the cancel_timer() call.
-   *
-   * @see cancel_timer()
-   * @see reset_timer_interval()
-   *
-   * @param event_handler  event handler to schedule on reactor
-   * @param arg   argument passed to the handle_timeout() method of  event_handler
-   * @param delay  time interval after which the timer will expire
-   * @param interval  time interval after which the timer will be automatically rescheduled
-   * @return -1 on failure, a timer_id value on success
-   */
-  virtual long schedule_timer (ACE_Event_Handler *event_handler,
-                               const void *arg,
-                               const ACE_Time_Value &delay,
-                               const ACE_Time_Value &interval = ACE_Time_Value::zero) = 0;
-
-  /**
-   * Resets the interval of the timer represented by <timer_id> to
-   * <interval>, which is specified in relative time to the current
-   * <gettimeofday>.  If <interval> is equal to
-   * <ACE_Time_Value::zero>, the timer will become a non-rescheduling
-   * timer.  Returns 0 if successful, -1 if not.
-   */
-  virtual int reset_timer_interval (long timer_id,
-                                    const ACE_Time_Value &interval) = 0;
-
-  /// Cancel all Event_Handlers that match the address of
-  /// <event_handler>.  Returns number of handlers cancelled.
-  virtual int cancel_timer (ACE_Event_Handler *event_handler,
-                            int dont_call_handle_close = 1) = 0;
-
-  /**
-   * Cancel the single Event_Handler that matches the <timer_id> value
-   * (which was returned from the schedule method).  If arg is
-   * non-NULL then it will be set to point to the ``magic cookie''
-   * argument passed in when the Event_Handler was registered.  This
-   * makes it possible to free up the memory and avoid memory leaks.
-   * Returns 1 if cancellation succeeded and 0 if the <timer_id>
-   * wasn't found.
-   */
-  virtual int cancel_timer (long timer_id,
-                            const void **arg = 0,
-                            int dont_call_handle_close = 1) = 0;
-
-  // = High-level Event_Handler scheduling operations
-
-  /// Add <masks_to_be_added> to the <event_handler>'s entry.
-  /// <event_handler> must already have been registered.
-  virtual int schedule_wakeup (ACE_Event_Handler *event_handler,
-                               ACE_Reactor_Mask masks_to_be_added) = 0;
-
-  /// Add <masks_to_be_added> to the <handle>'s entry.  <event_handler>
-  /// associated with <handle> must already have been registered.
-  virtual int schedule_wakeup (ACE_HANDLE handle,
-                               ACE_Reactor_Mask masks_to_be_added) = 0;
-
-  /// Clear <masks_to_be_cleared> from the <event_handler>'s entry.
-  virtual int cancel_wakeup (ACE_Event_Handler *event_handler,
-                             ACE_Reactor_Mask masks_to_be_cleared) = 0;
-
-  /// Clear <masks_to_be_cleared> from the <handle>'s entry.
-  virtual int cancel_wakeup (ACE_HANDLE handle,
-                             ACE_Reactor_Mask masks_to_be_cleared) = 0;
-
-  // = Notification methods.
-
-  /**
-   * Notify <event_handler> of <mask> event.  The <ACE_Time_Value>
-   * indicates how long to blocking trying to notify.  If <timeout> ==
-   * 0, the caller will block until action is possible, else will wait
-   * until the relative time specified in <timeout> elapses).
-   */
-  virtual int notify (ACE_Event_Handler *event_handler = 0,
-                      ACE_Reactor_Mask mask = ACE_Event_Handler::EXCEPT_MASK,
-                      ACE_Time_Value * = 0) = 0;
-
-  /**
-   * Set the maximum number of times that ACE_Reactor_Impl will
-   * iterate and dispatch the <ACE_Event_Handlers> that are passed in
-   * via the notify queue before breaking out of its
-   * <ACE_Message_Queue::dequeue> loop.  By default, this is set to
-   * -1, which means "iterate until the queue is empty."  Setting this
-   * to a value like "1 or 2" will increase "fairness" (and thus
-   * prevent starvation) at the expense of slightly higher dispatching
-   * overhead.
-   */
-  virtual void max_notify_iterations (int) = 0;
-
-  /**
-   * Get the maximum number of times that the ACE_Reactor_Impl will
-   * iterate and dispatch the <ACE_Event_Handlers> that are passed in
-   * via the notify queue before breaking out of its
-   * <ACE_Message_Queue::dequeue> loop.
-   */
-  virtual int max_notify_iterations (void) = 0;
-
-  /**
-   * Purge any notifications pending in this reactor for the specified
-   * <ACE_Event_Handler> object. Returns the number of notifications
-   * purged. Returns -1 on error.
-   */
-  virtual int purge_pending_notifications (ACE_Event_Handler * = 0,
-                                           ACE_Reactor_Mask    = ACE_Event_Handler::ALL_EVENTS_MASK) = 0;
-
-  /**
-   * Return the Event_Handler associated with <handle>.  Return 0 if
-   * <handle> is not registered.
-   */
-  virtual ACE_Event_Handler *find_handler (ACE_HANDLE handle) = 0;
-
-  /**
-   * Check to see if <handle> is associated with a valid Event_Handler
-   * bound to <mask>.  Return the <event_handler> associated with this
-   * <handler> if <event_handler> != 0.
-   */
-  virtual int handler (ACE_HANDLE handle,
-                       ACE_Reactor_Mask mask,
-                       ACE_Event_Handler **event_handler = 0) = 0;
-
-  /**
-   * Check to see if <signum> is associated with a valid Event_Handler
-   * bound to a signal.  Return the <event_handler> associated with
-   * this <handler> if <event_handler> != 0.
-   */
-  virtual int handler (int signum,
-                       ACE_Event_Handler ** = 0) = 0;
-
-  /// Returns true if Reactor has been successfully initialized, else
-  /// false.
-  virtual int initialized (void) = 0;
-
-  /// Returns the current size of the Reactor's internal descriptor
-  /// table.
-  virtual size_t size (void) const = 0;
-
-  /// Returns a reference to the Reactor's internal lock.
-  virtual ACE_Lock &lock (void) = 0;
-
-  /// Wake up all threads in waiting in the event loop
-  virtual void wakeup_all_threads (void) = 0;
-
-  /// Transfers ownership of Reactor_Impl to the <new_owner>.
-  virtual int owner (ACE_thread_t new_owner, ACE_thread_t *old_owner = 0) = 0;
-
-  /// Return the ID of the "owner" thread.
-  virtual int owner (ACE_thread_t *owner) = 0;
-
-  /// Get the existing restart value.
-  virtual int restart (void) = 0;
-
-  /// Set a new value for restart and return the original value.
-  virtual int restart (int r) = 0;
-
-  /// Set position of the owner thread.
-  virtual void requeue_position (int) = 0;
-
-  /// Get position of the owner thread.
-  virtual int requeue_position (void) = 0;
-
-  // = Low-level wait_set mask manipulation methods.
-
-  /// GET/SET/ADD/CLR the dispatch mask "bit" bound with the
-  /// <event_handler> and <mask>.
-  virtual int mask_ops (ACE_Event_Handler *event_handler,
-                        ACE_Reactor_Mask mask,
-                        int ops) = 0;
-
-  /// GET/SET/ADD/CLR the dispatch MASK "bit" bound with the <handle>
-  /// and <mask>.
-  virtual int mask_ops (ACE_HANDLE handle,
-                        ACE_Reactor_Mask mask,
-                        int ops) = 0;
-
-  // = Low-level ready_set mask manipulation methods.
-  /// GET/SET/ADD/CLR the ready "bit" bound with the <event_handler>
-  /// and <mask>.
-  virtual int ready_ops (ACE_Event_Handler *event_handler,
-                         ACE_Reactor_Mask mask,
-                         int ops) = 0;
-
-  /// GET/SET/ADD/CLR the ready "bit" bound with the <handle> and <mask>.
-  virtual int ready_ops (ACE_HANDLE handle,
-                         ACE_Reactor_Mask,
-                         int ops) = 0;
-
-  /// Dump the state of an object.
-  virtual void dump (void) const = 0;
-
-  /// Declare the dynamic allocation hooks.
-  ACE_ALLOC_HOOK_DECLARE;
-};
-
-#include /**/ "ace/post.h"
-#endif /* ACE_REACTOR_IMPL_H */