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authorWilliam R. Otte <wotte@dre.vanderbilt.edu>2008-03-04 13:56:48 +0000
committerWilliam R. Otte <wotte@dre.vanderbilt.edu>2008-03-04 13:56:48 +0000
commitc4078c377d74290ebe4e66da0b4975da91732376 (patch)
tree1816ef391e42a07929304908ac0e21f4c2f6cb7b /ACE/ace/Select_Reactor_Base.cpp
parent700d1c1a6be348c6c70a2085e559baeb8f4a62ea (diff)
downloadATCD-c4078c377d74290ebe4e66da0b4975da91732376.tar.gz
swap in externals for ACE and TAO
Diffstat (limited to 'ACE/ace/Select_Reactor_Base.cpp')
-rw-r--r--ACE/ace/Select_Reactor_Base.cpp1104
1 files changed, 0 insertions, 1104 deletions
diff --git a/ACE/ace/Select_Reactor_Base.cpp b/ACE/ace/Select_Reactor_Base.cpp
deleted file mode 100644
index 5b40ddfab5b..00000000000
--- a/ACE/ace/Select_Reactor_Base.cpp
+++ /dev/null
@@ -1,1104 +0,0 @@
-// $Id$
-
-#include "ace/Select_Reactor_Base.h"
-#include "ace/Reactor.h"
-#include "ace/Thread.h"
-#include "ace/SOCK_Acceptor.h"
-#include "ace/SOCK_Connector.h"
-#include "ace/Timer_Queue.h"
-#include "ace/Log_Msg.h"
-#include "ace/Signal.h"
-#include "ace/OS_NS_fcntl.h"
-
-#if !defined (__ACE_INLINE__)
-#include "ace/Select_Reactor_Base.inl"
-#endif /* __ACE_INLINE__ */
-
-#ifndef ACE_WIN32
-# include <algorithm>
-#endif /* !ACE_WIN32 */
-
-ACE_RCSID (ace,
- Select_Reactor_Base,
- "$Id$")
-
-
-ACE_BEGIN_VERSIONED_NAMESPACE_DECL
-
-template<typename iterator>
-inline ACE_Event_Handler *
-ACE_SELECT_REACTOR_EVENT_HANDLER (iterator i)
-{
-#ifdef ACE_WIN32
- return (*i).item ();
-#else
- return (*i);
-#endif /* ACE_WIN32 */
-}
-
-// Performs sanity checking on the ACE_HANDLE.
-
-bool
-ACE_Select_Reactor_Handler_Repository::invalid_handle (ACE_HANDLE handle)
-{
- ACE_TRACE ("ACE_Select_Reactor_Handler_Repository::invalid_handle");
-#if defined (ACE_WIN32)
- // It's too expensive to perform more exhaustive validity checks on
- // Win32 due to the way that they implement SOCKET HANDLEs.
- if (handle == ACE_INVALID_HANDLE)
-#else /* !ACE_WIN32 */
- if (handle < 0
- || static_cast<size_type> (handle) >= this->event_handlers_.size ())
-#endif /* ACE_WIN32 */
- {
- errno = EINVAL;
- return true;
- }
-
- return false;
-}
-
-// Performs sanity checking on the ACE_HANDLE.
-
-bool
-ACE_Select_Reactor_Handler_Repository::handle_in_range (ACE_HANDLE handle)
-{
- ACE_TRACE ("ACE_Select_Reactor_Handler_Repository::handle_in_range");
-#if defined (ACE_WIN32)
- // It's too expensive to perform more exhaustive validity checks on
- // Win32 due to the way that they implement SOCKET HANDLEs.
- if (handle != ACE_INVALID_HANDLE)
-#else /* !ACE_WIN32 */
- if (handle >= 0 && handle < this->max_handlep1_)
-#endif /* ACE_WIN32 */
- {
- return true;
- }
-
- // Don't bother setting errno. It isn't used in the select()-based
- // reactors and incurs a TSS access.
- // errno = EINVAL;
-
- return false;
-}
-
-int
-ACE_Select_Reactor_Handler_Repository::open (size_t size)
-{
- ACE_TRACE ("ACE_Select_Reactor_Handler_Repository::open");
-
-#if defined (ACE_WIN32)
- if (this->event_handlers_.open (size) == -1)
- return -1;
-#else
- if (this->event_handlers_.size (size) == -1)
- return -1;
-
- // Initialize the ACE_Event_Handler pointers to 0.
- std::fill (this->event_handlers_.begin (),
- this->event_handlers_.end (),
- static_cast<ACE_Event_Handler *> (0));
-
- this->max_handlep1_ = 0;
-#endif /* ACE_WIN32 */
-
- // Try to increase the number of handles if <size> is greater than
- // the current limit.
- return ACE::set_handle_limit (static_cast<int> (size), 1);
-}
-
-// Initialize a repository of the appropriate <size>.
-
-ACE_Select_Reactor_Handler_Repository::ACE_Select_Reactor_Handler_Repository (ACE_Select_Reactor_Impl &select_reactor)
- : select_reactor_ (select_reactor),
-#ifndef ACE_WIN32
- max_handlep1_ (0),
-#endif /* !ACE_WIN32 */
- event_handlers_ ()
-{
- ACE_TRACE ("ACE_Select_Reactor_Handler_Repository::ACE_Select_Reactor_Handler_Repository");
-}
-
-int
-ACE_Select_Reactor_Handler_Repository::unbind_all (void)
-{
- // Unbind all of the <handle, ACE_Event_Handler>s.
-#ifdef ACE_WIN32
- map_type::iterator const end = this->event_handlers_.end ();
- for (map_type::iterator pos = this->event_handlers_.begin ();
- pos != end;
- )
- {
- // Post-increment (*not* pre-increment) before unbind()ing since
- // the current iterator will be invalidated during the unbind()
- // operation.
- map_type::iterator const the_pos (pos++);
-
- ACE_HANDLE const handle = (*the_pos).key ();
- (void) this->unbind (handle,
- the_pos,
- ACE_Event_Handler::ALL_EVENTS_MASK);
- }
-#else
- // We could use the "end()" iterator but leveraging max_handlep1_
- // allows us to optimize away unnecessary accesses of nil event
- // handler pointers.
- map_type::iterator pos =
- this->event_handlers_.begin (); // iterator == ACE_Event_Handler*
-
- for (ACE_HANDLE handle = 0;
- handle < this->max_handlep1_;
- ++handle)
- {
- (void) this->unbind (handle,
- pos,
- ACE_Event_Handler::ALL_EVENTS_MASK);
- ++pos;
- }
-#endif /* ACE_WIN32 */
-
- return 0;
-}
-
-int
-ACE_Select_Reactor_Handler_Repository::close (void)
-{
- ACE_TRACE ("ACE_Select_Reactor_Handler_Repository::close");
-
- return this->unbind_all ();
-}
-
-ACE_Select_Reactor_Handler_Repository::map_type::iterator
-ACE_Select_Reactor_Handler_Repository::find_eh (ACE_HANDLE handle)
-{
- ACE_TRACE ("ACE_Select_Reactor_Handler_Repository::find_eh");
-
- map_type::iterator pos (this->event_handlers_.end ());
-
- // this code assumes the handle is in range.
-#if defined (ACE_WIN32)
- this->event_handlers_.find (handle, pos);
-#else
- map_type::iterator const tmp = &this->event_handlers_[handle];
-
- if (*tmp != 0)
- pos = tmp;
-#endif /* ACE_WIN32 */
-
- return pos;
-}
-
-// Bind the <ACE_Event_Handler *> to the <ACE_HANDLE>.
-int
-ACE_Select_Reactor_Handler_Repository::bind (ACE_HANDLE handle,
- ACE_Event_Handler *event_handler,
- ACE_Reactor_Mask mask)
-{
- ACE_TRACE ("ACE_Select_Reactor_Handler_Repository::bind");
-
- if (event_handler == 0)
- return -1;
-
- if (handle == ACE_INVALID_HANDLE)
- handle = event_handler->get_handle ();
-
- if (this->invalid_handle (handle))
- return -1;
-
- // Is this handle already in the Reactor?
- bool existing_handle = false;
-
-#if defined (ACE_WIN32)
-
- map_type::ENTRY * entry = 0;
-
- int const result =
- this->event_handlers_.bind (handle, event_handler, entry);
-
- if (result == -1)
- {
- return -1;
- }
- else if (result == 1) // Entry already exists.
- {
- // Cannot use a different handler for an existing handle.
- if (event_handler != entry->item ())
- {
- return -1;
- }
- else
- {
- // Remember that this handle is already registered in the
- // Reactor.
- existing_handle = true;
- }
- }
-
-#else
-
- // Check if this handle is already registered.
- ACE_Event_Handler * const current_handler =
- this->event_handlers_[handle];
-
- if (current_handler)
- {
- // Cannot use a different handler for an existing handle.
- if (current_handler != event_handler)
- return -1;
-
- // Remember that this handle is already registered in the
- // Reactor.
- existing_handle = true;
- }
-
- this->event_handlers_[handle] = event_handler;
-
- if (this->max_handlep1_ < handle + 1)
- this->max_handlep1_ = handle + 1;
-
-#endif /* ACE_WIN32 */
-
- if (this->select_reactor_.is_suspended_i (handle))
- {
- this->select_reactor_.bit_ops (handle,
- mask,
- this->select_reactor_.suspend_set_,
- ACE_Reactor::ADD_MASK);
- }
- else
- {
- this->select_reactor_.bit_ops (handle,
- mask,
- this->select_reactor_.wait_set_,
- ACE_Reactor::ADD_MASK);
-
- // Note the fact that we've changed the state of the <wait_set_>,
- // which is used by the dispatching loop to determine whether it can
- // keep going or if it needs to reconsult select().
- // this->select_reactor_.state_changed_ = 1;
- }
-
- // If new entry, call add_reference() if needed.
- if (!existing_handle)
- event_handler->add_reference ();
-
- return 0;
-}
-
-// Remove the binding of <ACE_HANDLE>.
-
-int
-ACE_Select_Reactor_Handler_Repository::unbind (
- ACE_HANDLE handle,
- map_type::iterator pos,
- ACE_Reactor_Mask mask)
-{
- ACE_TRACE ("ACE_Select_Reactor_Handler_Repository::unbind");
-
- // Retrieve event handler before unbinding it from the map. The
- // iterator pointing to it will no longer be valid once the handler
- // is unbound.
- ACE_Event_Handler * const event_handler =
- (pos == this->event_handlers_.end ()
- ? 0
- : ACE_SELECT_REACTOR_EVENT_HANDLER (pos));
-
- // Clear out the <mask> bits in the Select_Reactor's wait_set.
- this->select_reactor_.bit_ops (handle,
- mask,
- this->select_reactor_.wait_set_,
- ACE_Reactor::CLR_MASK);
-
- // And suspend_set.
- this->select_reactor_.bit_ops (handle,
- mask,
- this->select_reactor_.suspend_set_,
- ACE_Reactor::CLR_MASK);
-
- // Note the fact that we've changed the state of the <wait_set_>,
- // which is used by the dispatching loop to determine whether it can
- // keep going or if it needs to reconsult select().
- // this->select_reactor_.state_changed_ = 1;
-
- // If there are no longer any outstanding events on this <handle>
- // then we can totally shut down the Event_Handler.
-
- bool const has_any_wait_mask =
- (this->select_reactor_.wait_set_.rd_mask_.is_set (handle)
- || this->select_reactor_.wait_set_.wr_mask_.is_set (handle)
- || this->select_reactor_.wait_set_.ex_mask_.is_set (handle));
- bool const has_any_suspend_mask =
- (this->select_reactor_.suspend_set_.rd_mask_.is_set (handle)
- || this->select_reactor_.suspend_set_.wr_mask_.is_set (handle)
- || this->select_reactor_.suspend_set_.ex_mask_.is_set (handle));
-
- bool complete_removal = false;
-
- if (!has_any_wait_mask && !has_any_suspend_mask)
- {
-#if defined (ACE_WIN32)
- if (event_handler != 0 && this->event_handlers_.unbind (pos) == -1)
- return -1; // Should not happen!
-#else
- this->event_handlers_[handle] = 0;
-
- if (this->max_handlep1_ == handle + 1)
- {
- // We've deleted the last entry, so we need to figure out
- // the last valid place in the array that is worth looking
- // at.
- ACE_HANDLE const wait_rd_max =
- this->select_reactor_.wait_set_.rd_mask_.max_set ();
- ACE_HANDLE const wait_wr_max =
- this->select_reactor_.wait_set_.wr_mask_.max_set ();
- ACE_HANDLE const wait_ex_max =
- this->select_reactor_.wait_set_.ex_mask_.max_set ();
-
- ACE_HANDLE const suspend_rd_max =
- this->select_reactor_.suspend_set_.rd_mask_.max_set ();
- ACE_HANDLE const suspend_wr_max =
- this->select_reactor_.suspend_set_.wr_mask_.max_set ();
- ACE_HANDLE const suspend_ex_max =
- this->select_reactor_.suspend_set_.ex_mask_.max_set ();
-
- // Compute the maximum of six values.
- this->max_handlep1_ = wait_rd_max;
- if (this->max_handlep1_ < wait_wr_max)
- this->max_handlep1_ = wait_wr_max;
- if (this->max_handlep1_ < wait_ex_max)
- this->max_handlep1_ = wait_ex_max;
-
- if (this->max_handlep1_ < suspend_rd_max)
- this->max_handlep1_ = suspend_rd_max;
- if (this->max_handlep1_ < suspend_wr_max)
- this->max_handlep1_ = suspend_wr_max;
- if (this->max_handlep1_ < suspend_ex_max)
- this->max_handlep1_ = suspend_ex_max;
-
- ++this->max_handlep1_;
- }
-
-#endif /* ACE_WIN32 */
-
- // The handle has been completely removed.
- complete_removal = true;
- }
-
- if (event_handler == 0)
- return -1;
-
- bool const requires_reference_counting =
- event_handler->reference_counting_policy ().value () ==
- ACE_Event_Handler::Reference_Counting_Policy::ENABLED;
-
- // Close down the <Event_Handler> unless we've been instructed not
- // to.
- if (ACE_BIT_ENABLED (mask, ACE_Event_Handler::DONT_CALL) == 0)
- (void) event_handler->handle_close (handle, mask);
-
- // Call remove_reference() if the removal is complete and reference
- // counting is needed.
- if (complete_removal && requires_reference_counting)
- {
- (void) event_handler->remove_reference ();
- }
-
- return 0;
-}
-
-ACE_Select_Reactor_Handler_Repository_Iterator::ACE_Select_Reactor_Handler_Repository_Iterator
- (ACE_Select_Reactor_Handler_Repository const * s)
- : rep_ (s),
- current_ (s->event_handlers_.begin ())
-{
-}
-
-// Pass back the <next_item> that hasn't been seen in the Set.
-// Returns 0 when all items have been seen, else 1.
-
-bool
-ACE_Select_Reactor_Handler_Repository_Iterator::next (
- ACE_Event_Handler *&next_item)
-{
- bool result = true;
-
- if (this->done ())
- result = false;
- else
- next_item = ACE_SELECT_REACTOR_EVENT_HANDLER (this->current_);
-
- return result;
-}
-
-// Move forward by one element in the set.
-
-bool
-ACE_Select_Reactor_Handler_Repository_Iterator::advance (void)
-{
-#ifdef ACE_WIN32
- // No need to explicitly limit search to "current" to
- // max_handlep1_ range.
- const_base_iterator const end = this->rep_->event_handlers_.end ();
-#else
- // Don't use ACE_Array_Base::end() since it may be larger than
- // event_handlers[max_handlep1_].
- const_base_iterator const end =
- &this->rep_->event_handlers_[this->rep_->max_handlep1 ()];
-#endif /* ACE_WIN32 */
-
- if (this->current_ != end)
- ++this->current_;
-
-#ifndef ACE_WIN32
- // Advance to the next element containing a non-zero event handler.
- // There's no need to do this for the Windows case since the hash
- // map will only contain non-zero event handlers.
- while (this->current_ != end && (*(this->current_) == 0))
- ++this->current_;
-#endif /* !ACE_WIN32 */
-
- return this->current_ != end;
-}
-
-// Dump the state of an object.
-
-void
-ACE_Select_Reactor_Handler_Repository_Iterator::dump (void) const
-{
-#if defined (ACE_HAS_DUMP)
- ACE_TRACE ("ACE_Select_Reactor_Handler_Repository_Iterator::dump");
-
- ACE_DEBUG ((LM_DEBUG, ACE_BEGIN_DUMP, this));
- ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("rep_ = %u"), this->rep_));
-# ifdef ACE_WIN32
- ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("current_ = ")));
- this->current_.dump ();
-# else
- ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("current_ = %@"), this->current_));
-# endif /* ACE_WIN32 */
- ACE_DEBUG ((LM_DEBUG, ACE_END_DUMP));
-#endif /* ACE_HAS_DUMP */
-}
-
-void
-ACE_Select_Reactor_Handler_Repository::dump (void) const
-{
-#if defined (ACE_HAS_DUMP)
- ACE_TRACE ("ACE_Select_Reactor_Handler_Repository::dump");
-
-# ifdef ACE_WIN32
-# define ACE_HANDLE_FORMAT_SPECIFIER ACE_TEXT("%@")
-# define ACE_MAX_HANDLEP1_FORMAT_SPECIFIER ACE_TEXT("%u")
-# else
-# define ACE_HANDLE_FORMAT_SPECIFIER ACE_TEXT("%d")
-# define ACE_MAX_HANDLEP1_FORMAT_SPECIFIER ACE_TEXT("%d")
-# endif /* ACE_WIN32 */
-
- ACE_DEBUG ((LM_DEBUG, ACE_BEGIN_DUMP, this));
- ACE_DEBUG ((LM_DEBUG,
- ACE_TEXT ("max_handlep1_ = ")
- ACE_MAX_HANDLEP1_FORMAT_SPECIFIER
- ACE_TEXT ("\n"),
- this->max_handlep1 ()));
- ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("[")));
-
- ACE_Event_Handler *event_handler = 0;
-
- for (ACE_Select_Reactor_Handler_Repository_Iterator iter (this);
- iter.next (event_handler) != 0;
- iter.advance ())
- ACE_DEBUG ((LM_DEBUG,
- ACE_TEXT (" (event_handler = %@,")
- ACE_TEXT (" event_handler->handle_ = ")
- ACE_HANDLE_FORMAT_SPECIFIER
- ACE_TEXT ("\n"),
- event_handler,
- event_handler->get_handle ()));
-
- ACE_DEBUG ((LM_DEBUG, ACE_TEXT (" ]\n")));
- ACE_DEBUG ((LM_DEBUG, ACE_END_DUMP));
-#endif /* ACE_HAS_DUMP */
-}
-
-ACE_ALLOC_HOOK_DEFINE(ACE_Select_Reactor_Handler_Repository_Iterator)
-
-ACE_Select_Reactor_Notify::ACE_Select_Reactor_Notify (void)
- : max_notify_iterations_ (-1)
-{
-}
-
-ACE_Select_Reactor_Notify::~ACE_Select_Reactor_Notify (void)
-{
-}
-
-void
-ACE_Select_Reactor_Notify::max_notify_iterations (int iterations)
-{
- // Must always be > 0 or < 0 to optimize the loop exit condition.
- if (iterations == 0)
- iterations = 1;
-
- this->max_notify_iterations_ = iterations;
-}
-
-int
-ACE_Select_Reactor_Notify::max_notify_iterations (void)
-{
- return this->max_notify_iterations_;
-}
-
-// purge_pending_notifications
-// Removes all entries from the notify_queue_ and each one that
-// matches <eh> is put on the free_queue_. The rest are saved on a
-// local queue and copied back to the notify_queue_ at the end.
-// Returns the number of entries removed. Returns -1 on error.
-// ACE_NOTSUP_RETURN if ACE_HAS_REACTOR_NOTIFICATION_QUEUE is not defined.
-int
-ACE_Select_Reactor_Notify::purge_pending_notifications (ACE_Event_Handler *eh,
- ACE_Reactor_Mask mask )
-{
- ACE_TRACE ("ACE_Select_Reactor_Notify::purge_pending_notifications");
-
-#if defined (ACE_HAS_REACTOR_NOTIFICATION_QUEUE)
-
- return notification_queue_.purge_pending_notifications(eh, mask);
-
-#else /* defined (ACE_HAS_REACTOR_NOTIFICATION_QUEUE) */
- ACE_UNUSED_ARG (eh);
- ACE_UNUSED_ARG (mask);
- ACE_NOTSUP_RETURN (-1);
-#endif /* defined (ACE_HAS_REACTOR_NOTIFICATION_QUEUE) */
-}
-
-void
-ACE_Select_Reactor_Notify::dump (void) const
-{
-#if defined (ACE_HAS_DUMP)
- ACE_TRACE ("ACE_Select_Reactor_Notify::dump");
-
- ACE_DEBUG ((LM_DEBUG, ACE_BEGIN_DUMP, this));
- ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("select_reactor_ = %x"), this->select_reactor_));
- this->notification_pipe_.dump ();
- ACE_DEBUG ((LM_DEBUG, ACE_END_DUMP));
-#endif /* ACE_HAS_DUMP */
-}
-
-int
-ACE_Select_Reactor_Notify::open (ACE_Reactor_Impl *r,
- ACE_Timer_Queue *,
- int disable_notify_pipe)
-{
- ACE_TRACE ("ACE_Select_Reactor_Notify::open");
-
- if (disable_notify_pipe == 0)
- {
- this->select_reactor_ =
- dynamic_cast<ACE_Select_Reactor_Impl *> (r);
-
- if (select_reactor_ == 0)
- {
- errno = EINVAL;
- return -1;
- }
-
- if (this->notification_pipe_.open () == -1)
- return -1;
-#if defined (F_SETFD)
- ACE_OS::fcntl (this->notification_pipe_.read_handle (), F_SETFD, 1);
- ACE_OS::fcntl (this->notification_pipe_.write_handle (), F_SETFD, 1);
-#endif /* F_SETFD */
-
-#if defined (ACE_HAS_REACTOR_NOTIFICATION_QUEUE)
- if (notification_queue_.open() == -1)
- {
- return -1;
- }
-#endif /* ACE_HAS_REACTOR_NOTIFICATION_QUEUE */
-
- // There seems to be a Win32 bug with this... Set this into
- // non-blocking mode.
- if (ACE::set_flags (this->notification_pipe_.read_handle (),
- ACE_NONBLOCK) == -1)
- return -1;
- else
- return this->select_reactor_->register_handler
- (this->notification_pipe_.read_handle (),
- this,
- ACE_Event_Handler::READ_MASK);
- }
- else
- {
- this->select_reactor_ = 0;
- return 0;
- }
-}
-
-int
-ACE_Select_Reactor_Notify::close (void)
-{
- ACE_TRACE ("ACE_Select_Reactor_Notify::close");
-
-#if defined (ACE_HAS_REACTOR_NOTIFICATION_QUEUE)
- notification_queue_.reset();
-#else
- if (this->notification_pipe_.read_handle() != ACE_INVALID_HANDLE)
- {
- // Please see Bug 2820, if we just close the pipe then we break
- // the reference counting rules. Basically, all the event
- // handlers "stored" in the pipe had their reference counts
- // increased. We need to decrease them before closing the
- // pipe....
- ACE_Notification_Buffer b;
- for (int r = read_notify_pipe(notification_pipe_.read_handle(), b);
- r > 0;
- r = read_notify_pipe(notification_pipe_.read_handle(), b))
- {
- if (b.eh_ != 0)
- {
- b.eh_->remove_reference();
- }
- }
- }
-#endif /* ACE_HAS_REACTOR_NOTIFICATION_QUEUE */
-
- return this->notification_pipe_.close ();
-}
-
-int
-ACE_Select_Reactor_Notify::notify (ACE_Event_Handler *event_handler,
- ACE_Reactor_Mask mask,
- ACE_Time_Value *timeout)
-{
- ACE_TRACE ("ACE_Select_Reactor_Notify::notify");
-
- // Just consider this method a "no-op" if there's no
- // <ACE_Select_Reactor> configured.
- if (this->select_reactor_ == 0)
- return 0;
-
- ACE_Event_Handler_var safe_handler (event_handler);
-
- if (event_handler)
- event_handler->add_reference ();
-
- ACE_Notification_Buffer buffer (event_handler, mask);
-
-#if defined (ACE_HAS_REACTOR_NOTIFICATION_QUEUE)
- int const notification_required =
- notification_queue_.push_new_notification(buffer);
-
- if (notification_required == -1)
- {
- return -1;
- }
-
- if (notification_required == 0)
- {
- // No failures, the handler is now owned by the notification queue
- safe_handler.release ();
-
- return 0;
- }
-#endif /* ACE_HAS_REACTOR_NOTIFICATION_QUEUE */
-
- ssize_t const n = ACE::send (this->notification_pipe_.write_handle (),
- (char *) &buffer,
- sizeof buffer,
- timeout);
- if (n == -1)
- return -1;
-
- // No failures.
- safe_handler.release ();
-
- return 0;
-}
-
-// Handles pending threads (if any) that are waiting to unblock the
-// Select_Reactor.
-
-int
-ACE_Select_Reactor_Notify::dispatch_notifications (int &number_of_active_handles,
- ACE_Handle_Set &rd_mask)
-{
- ACE_TRACE ("ACE_Select_Reactor_Notify::dispatch_notifications");
-
- ACE_HANDLE const read_handle =
- this->notification_pipe_.read_handle ();
-
- if (read_handle != ACE_INVALID_HANDLE
- && rd_mask.is_set (read_handle))
- {
- --number_of_active_handles;
- rd_mask.clr_bit (read_handle);
- return this->handle_input (read_handle);
- }
- else
- return 0;
-}
-
-
-ACE_HANDLE
-ACE_Select_Reactor_Notify::notify_handle (void)
-{
- ACE_TRACE ("ACE_Select_Reactor_Notify::notify_handle");
-
- return this->notification_pipe_.read_handle ();
-}
-
-
-int
-ACE_Select_Reactor_Notify::is_dispatchable (ACE_Notification_Buffer &buffer)
-{
-#if defined (ACE_HAS_REACTOR_NOTIFICATION_QUEUE)
- ACE_UNUSED_ARG(buffer);
- return 1;
-#else
- // If eh == 0 then another thread is unblocking the
- // <ACE_Select_Reactor> to update the <ACE_Select_Reactor>'s
- // internal structures. Otherwise, we need to dispatch the
- // appropriate handle_* method on the <ACE_Event_Handler>
- // pointer we've been passed.
- if (buffer.eh_ != 0)
- {
- return 1;
- }
- else
- {
- // has no dispatchable buffer
- return 0;
- }
-#endif /*ACE_HAS_REACTOR_NOTIFICATION_QUEUE */
-}
-
-int
-ACE_Select_Reactor_Notify::dispatch_notify (ACE_Notification_Buffer &buffer)
-{
- int result = 0;
-
-#if defined (ACE_HAS_REACTOR_NOTIFICATION_QUEUE)
- // Dispatch one message from the notify queue, and put another in
- // the pipe if one is available. Remember, the idea is to keep
- // exactly one message in the pipe at a time.
-
- bool more_messages_queued = false;
- ACE_Notification_Buffer next;
-
- result = notification_queue_.pop_next_notification(buffer,
- more_messages_queued,
- next);
-
- if (result == 0)
- {
- return 0;
- }
-
- if (result == -1)
- {
- return -1;
- }
-
- if(more_messages_queued)
- {
- (void) ACE::send(this->notification_pipe_.write_handle(),
- (char *)&next, sizeof(ACE_Notification_Buffer));
- }
-#endif /* ACE_HAS_REACTOR_NOTIFICATION_QUEUE */
-
- // If eh == 0 then another thread is unblocking the
- // <ACE_Select_Reactor> to update the <ACE_Select_Reactor>'s
- // internal structures. Otherwise, we need to dispatch the
- // appropriate handle_* method on the <ACE_Event_Handler> pointer
- // we've been passed.
- if (buffer.eh_ != 0)
- {
- ACE_Event_Handler *event_handler = buffer.eh_;
-
- bool const requires_reference_counting =
- event_handler->reference_counting_policy ().value () ==
- ACE_Event_Handler::Reference_Counting_Policy::ENABLED;
-
- switch (buffer.mask_)
- {
- case ACE_Event_Handler::READ_MASK:
- case ACE_Event_Handler::ACCEPT_MASK:
- result = event_handler->handle_input (ACE_INVALID_HANDLE);
- break;
- case ACE_Event_Handler::WRITE_MASK:
- result = event_handler->handle_output (ACE_INVALID_HANDLE);
- break;
- case ACE_Event_Handler::EXCEPT_MASK:
- result = event_handler->handle_exception (ACE_INVALID_HANDLE);
- break;
- case ACE_Event_Handler::QOS_MASK:
- result = event_handler->handle_qos (ACE_INVALID_HANDLE);
- break;
- case ACE_Event_Handler::GROUP_QOS_MASK:
- result = event_handler->handle_group_qos (ACE_INVALID_HANDLE);
- break;
- default:
- // Should we bail out if we get an invalid mask?
- ACE_ERROR ((LM_ERROR,
- ACE_TEXT ("invalid mask = %d\n"),
- buffer.mask_));
- }
-
- if (result == -1)
- event_handler->handle_close (ACE_INVALID_HANDLE,
- ACE_Event_Handler::EXCEPT_MASK);
-
- if (requires_reference_counting)
- {
- event_handler->remove_reference ();
- }
- }
-
- return 1;
-}
-
-int
-ACE_Select_Reactor_Notify::read_notify_pipe (ACE_HANDLE handle,
- ACE_Notification_Buffer &buffer)
-{
- ACE_TRACE ("ACE_Select_Reactor_Notify::read_notify_pipe");
-
- ssize_t const n = ACE::recv (handle, (char *) &buffer, sizeof buffer);
-
- if (n > 0)
- {
- // Check to see if we've got a short read.
- if (n != sizeof buffer)
- {
- ssize_t const remainder = sizeof buffer - n;
-
- // If so, try to recover by reading the remainder. If this
- // doesn't work we're in big trouble since the input stream
- // won't be aligned correctly. I'm not sure quite what to
- // do at this point. It's probably best just to return -1.
- if (ACE::recv (handle,
- ((char *) &buffer) + n,
- remainder) != remainder)
- return -1;
- }
-
-
- return 1;
- }
-
- // Return -1 if things have gone seriously wrong.
- if (n <= 0 && (errno != EWOULDBLOCK && errno != EAGAIN))
- return -1;
-
- return 0;
-}
-
-
-int
-ACE_Select_Reactor_Notify::handle_input (ACE_HANDLE handle)
-{
- ACE_TRACE ("ACE_Select_Reactor_Notify::handle_input");
- // Precondition: this->select_reactor_.token_.current_owner () ==
- // ACE_Thread::self ();
-
- int number_dispatched = 0;
- int result = 0;
- ACE_Notification_Buffer buffer;
-
- while ((result = this->read_notify_pipe (handle, buffer)) > 0)
- {
- // Dispatch the buffer
- // NOTE: We count only if we made any dispatches ie. upcalls.
- if (this->dispatch_notify (buffer) > 0)
- ++number_dispatched;
-
- // Bail out if we've reached the <notify_threshold_>. Note that
- // by default <notify_threshold_> is -1, so we'll loop until all
- // the notifications in the pipe have been dispatched.
- if (number_dispatched == this->max_notify_iterations_)
- break;
- }
-
- // Reassign number_dispatched to -1 if things have gone seriously
- // wrong.
- if (result < 0)
- number_dispatched = -1;
-
- // Enqueue ourselves into the list of waiting threads. When we
- // reacquire the token we'll be off and running again with ownership
- // of the token. The postcondition of this call is that
- // <select_reactor_.token_.current_owner> == <ACE_Thread::self>.
- this->select_reactor_->renew ();
- return number_dispatched;
-}
-
-// -------------------------------------------
-
-int
-ACE_Select_Reactor_Impl::purge_pending_notifications (ACE_Event_Handler *eh,
- ACE_Reactor_Mask mask)
-{
- if (this->notify_handler_ == 0)
- return 0;
- else
- return this->notify_handler_->purge_pending_notifications (eh, mask);
-}
-
-
-// Perform GET, CLR, SET, and ADD operations on the Handle_Sets.
-//
-// GET = 1, Retrieve current value
-// SET = 2, Set value of bits to new mask (changes the entire mask)
-// ADD = 3, Bitwise "or" the value into the mask (only changes
-// enabled bits)
-// CLR = 4 Bitwise "and" the negation of the value out of the mask
-// (only changes enabled bits)
-//
-// Returns the original mask. Must be called with locks held.
-int
-ACE_Select_Reactor_Impl::bit_ops (ACE_HANDLE handle,
- ACE_Reactor_Mask mask,
- ACE_Select_Reactor_Handle_Set &handle_set,
- int ops)
-{
- ACE_TRACE ("ACE_Select_Reactor_Impl::bit_ops");
- if (this->handler_rep_.handle_in_range (handle) == 0)
- return -1;
-
-#if !defined (ACE_WIN32)
- ACE_Sig_Guard sb (0,
- this->mask_signals_); // Block out all signals until method returns.
-#endif /* ACE_WIN32 */
-
- ACE_FDS_PTMF ptmf = &ACE_Handle_Set::set_bit;
- u_long omask = ACE_Event_Handler::NULL_MASK;
-
- // Find the old reactor masks. This automatically does the work of
- // the GET_MASK operation.
- if (handle_set.rd_mask_.is_set (handle))
- ACE_SET_BITS (omask, ACE_Event_Handler::READ_MASK);
- if (handle_set.wr_mask_.is_set (handle))
- ACE_SET_BITS (omask, ACE_Event_Handler::WRITE_MASK);
- if (handle_set.ex_mask_.is_set (handle))
- ACE_SET_BITS (omask, ACE_Event_Handler::EXCEPT_MASK);
-
- switch (ops)
- {
- case ACE_Reactor::GET_MASK:
- // The work for this operation is done in all cases at the
- // begining of the function.
- break;
- case ACE_Reactor::CLR_MASK:
- ptmf = &ACE_Handle_Set::clr_bit;
- // State was changed. we need to reflect that change in the
- // dispatch_mask I assume that only ACE_Reactor::CLR_MASK should
- // be treated here which means we need to clear the handle|mask
- // from the current dispatch handler
- this->clear_dispatch_mask (handle, mask);
- /* FALLTHRU */
- case ACE_Reactor::SET_MASK:
- /* FALLTHRU */
- case ACE_Reactor::ADD_MASK:
-
- // The following code is rather subtle... Note that if we are
- // doing a ACE_Reactor::SET_MASK then if the bit is not enabled
- // in the mask we need to clear the bit from the ACE_Handle_Set.
- // On the other hand, if we are doing a ACE_Reactor::CLR_MASK or
- // a ACE_Reactor::ADD_MASK we just carry out the operations
- // specified by the mask.
-
- // READ, ACCEPT, and CONNECT flag will place the handle in the
- // read set.
- if (ACE_BIT_ENABLED (mask, ACE_Event_Handler::READ_MASK)
- || ACE_BIT_ENABLED (mask, ACE_Event_Handler::ACCEPT_MASK)
- || ACE_BIT_ENABLED (mask, ACE_Event_Handler::CONNECT_MASK))
- {
- (handle_set.rd_mask_.*ptmf) (handle);
- }
- else if (ops == ACE_Reactor::SET_MASK)
- handle_set.rd_mask_.clr_bit (handle);
-
- // WRITE and CONNECT flag will place the handle in the write set
- if (ACE_BIT_ENABLED (mask,
- ACE_Event_Handler::WRITE_MASK)
- || ACE_BIT_ENABLED (mask,
- ACE_Event_Handler::CONNECT_MASK))
- {
- (handle_set.wr_mask_.*ptmf) (handle);
- }
- else if (ops == ACE_Reactor::SET_MASK)
- handle_set.wr_mask_.clr_bit (handle);
-
- // EXCEPT (and CONNECT on Win32) flag will place the handle in
- // the except set.
- if (ACE_BIT_ENABLED (mask, ACE_Event_Handler::EXCEPT_MASK)
-#if defined (ACE_WIN32)
- || ACE_BIT_ENABLED (mask, ACE_Event_Handler::CONNECT_MASK)
-#endif /* ACE_WIN32 */
- )
- {
- (handle_set.ex_mask_.*ptmf) (handle);
- }
- else if (ops == ACE_Reactor::SET_MASK)
- handle_set.ex_mask_.clr_bit (handle);
- break;
- default:
- return -1;
- }
- return omask;
-}
-
-void
-ACE_Select_Reactor_Impl::clear_dispatch_mask (ACE_HANDLE handle,
- ACE_Reactor_Mask mask)
-{
- ACE_TRACE ("ACE_Select_Reactor_Impl::clear_dispatch_mask");
-
- // Use handle and mask in order to modify the sets
- // (wait/suspend/ready/dispatch), that way, the dispatch_io_set loop
- // will not be interrupt, and there will no reason to rescan the
- // wait_set and re-calling select function, which is *very*
- // expensive. It seems that wait/suspend/ready sets are getting
- // updated in register/remove bind/unbind etc functions. The only
- // thing need to be updated is the dispatch_set (also can be found
- // in that file code as dispatch_mask). Because of that, we need
- // that dispatch_set to be member of the ACE_Select_Reactor_impl in
- // Select_Reactor_Base.h file That way we will have access to that
- // member in that function.
-
- // We kind of invalidate the iterator in dispatch_io_set because its
- // an array and index built from the original dispatch-set. Take a
- // look at dispatch_io_set for more details.
-
- // We only need to clr_bit, because we are interested in clearing the
- // handles that was removed, so no dispatching to these handles will
- // occur.
- if (ACE_BIT_ENABLED (mask, ACE_Event_Handler::READ_MASK) ||
- ACE_BIT_ENABLED (mask, ACE_Event_Handler::ACCEPT_MASK))
- {
- this->dispatch_set_.rd_mask_.clr_bit (handle);
- }
- if (ACE_BIT_ENABLED (mask, ACE_Event_Handler::WRITE_MASK))
- {
- this->dispatch_set_.wr_mask_.clr_bit (handle);
- }
- if (ACE_BIT_ENABLED (mask, ACE_Event_Handler::EXCEPT_MASK))
- {
- this->dispatch_set_.ex_mask_.clr_bit (handle);
- }
-
- // That will make the dispatch_io_set iterator re-start and rescan
- // the dispatch set.
- this->state_changed_ = true;
-}
-
-
-int
-ACE_Select_Reactor_Impl::resumable_handler (void)
-{
- // The select reactor has no handlers that can be resumed by the
- // application. So return 0;
-
- return 0;
-}
-
-ACE_END_VERSIONED_NAMESPACE_DECL