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-// -*- C++ -*-
-
-//=============================================================================
-/**
- * @file WIN32_Proactor.h
- *
- * $Id$
- *
- * @author Irfan Pyarali (irfan@cs.wustl.edu)
- * @author Tim Harrison (harrison@cs.wustl.edu)
- * @author Alexander Babu Arulanthu <alex@cs.wustl.edu>
- * @author Roger Tragin <r.tragin@computer.org>
- * @author Alexander Libman <alibman@ihug.com.au>
- */
-//=============================================================================
-
-#ifndef ACE_WIN32_PROACTOR_H
-#define ACE_WIN32_PROACTOR_H
-#include /**/ "ace/pre.h"
-
-#include "ace/config-all.h"
-
-#if !defined (ACE_LACKS_PRAGMA_ONCE)
-#pragma once
-#endif /* ACE_LACKS_PRAGMA_ONCE */
-
-#if (defined (ACE_WIN32) && !defined (ACE_HAS_WINCE))
-// WIN32 implementation of the Proactor.
-
-#include "ace/WIN32_Asynch_IO.h"
-#include "ace/Event_Handler.h"
-
-#include "ace/Proactor_Impl.h"
-#include "ace/Asynch_Pseudo_Task.h"
-#include "ace/Auto_Event.h"
-
-ACE_BEGIN_VERSIONED_NAMESPACE_DECL
-
-// Forward declarations.
-class ACE_WIN32_Asynch_Result;
-class ACE_WIN32_Proactor_Timer_Handler;
-
-/**
- * @class ACE_WIN32_Proactor
- *
- * @brief A manager for asynchronous event demultiplexing on Win32.
- *
- * See the Proactor pattern description at
- * http://www.cs.wustl.edu/~schmidt/PDF/proactor.pdf for more
- * details.
- */
-class ACE_Export ACE_WIN32_Proactor : public ACE_Proactor_Impl
-{
- friend class ACE_WIN32_Asynch_Connect;
-
-public:
- /// A do nothing constructor.
- ACE_WIN32_Proactor (size_t number_of_threads = 0,
- int used_with_reactor_event_loop = 0);
-
- /// Virtual destruction.
- virtual ~ACE_WIN32_Proactor (void);
-
- /// Close the IO completion port.
- virtual int close (void);
-
- /// This method adds the @a handle to the I/O completion port. This
- /// function is a no-op function for Unix systems.
- virtual int register_handle (ACE_HANDLE handle,
- const void *completion_key);
-
- /**
- * Dispatch a single set of events. If @a wait_time elapses before
- * any events occur, return 0. Return 1 on success i.e., when a
- * completion is dispatched, non-zero (-1) on errors and errno is
- * set accordingly.
- */
- virtual int handle_events (ACE_Time_Value &wait_time);
-
- /**
- * Block indefinitely until at least one event is dispatched.
- * Dispatch a single set of events. Return 1 on success i.e., when a
- * completion is dispatched, non-zero (-1) on errors and errno is
- * set accordingly.
- */
- virtual int handle_events (void);
-
- /**
- * Post a result to the completion port of the Proactor. If errors
- * occur, the result will be deleted by this method. If successful,
- * the result will be deleted by the Proactor when the result is
- * removed from the completion port. Therefore, the result should
- * have been dynamically allocated and should be orphaned by the
- * user once this method is called.
- */
- virtual int post_completion (ACE_WIN32_Asynch_Result *result);
-
- /// Add wakeup dispatch threads (reinit).
- int wake_up_dispatch_threads (void);
-
- /// Close all dispatch threads.
- int close_dispatch_threads (int wait);
-
- /// Get number of thread used as a parameter to @c CreateIoCompletionPort.
- size_t number_of_threads (void) const;
-
- /// Set number of thread used as a parameter to @c CreateIoCompletionPort.
- void number_of_threads (size_t threads);
-
- /// Get the event handle.
- virtual ACE_HANDLE get_handle (void) const;
-
- virtual ACE_Asynch_Read_Stream_Impl *create_asynch_read_stream (void);
- virtual ACE_Asynch_Write_Stream_Impl *create_asynch_write_stream (void);
- virtual ACE_Asynch_Read_File_Impl *create_asynch_read_file (void);
- virtual ACE_Asynch_Write_File_Impl *create_asynch_write_file (void);
- virtual ACE_Asynch_Read_Dgram_Impl *create_asynch_read_dgram (void);
- virtual ACE_Asynch_Write_Dgram_Impl *create_asynch_write_dgram (void);
- virtual ACE_Asynch_Accept_Impl *create_asynch_accept (void);
- virtual ACE_Asynch_Connect_Impl *create_asynch_connect (void);
- virtual ACE_Asynch_Transmit_File_Impl *create_asynch_transmit_file (void);
-
- // Methods used to create Asynch_IO_Result objects. We create the right
- // objects here in these methods.
-
- virtual ACE_Asynch_Read_Stream_Result_Impl *create_asynch_read_stream_result (const ACE_Handler::Proxy_Ptr &handler_proxy,
- ACE_HANDLE handle,
- ACE_Message_Block &message_block,
- size_t bytes_to_read,
- const void* act,
- ACE_HANDLE event,
- int priority,
- int signal_number = 0);
-
- virtual ACE_Asynch_Write_Stream_Result_Impl *create_asynch_write_stream_result (const ACE_Handler::Proxy_Ptr &handler_proxy,
- ACE_HANDLE handle,
- ACE_Message_Block &message_block,
- size_t bytes_to_write,
- const void* act,
- ACE_HANDLE event,
- int priority,
- int signal_number = 0);
-
- virtual ACE_Asynch_Read_File_Result_Impl *create_asynch_read_file_result (const ACE_Handler::Proxy_Ptr &handler_proxy,
- ACE_HANDLE handle,
- ACE_Message_Block &message_block,
- size_t bytes_to_read,
- const void* act,
- u_long offset,
- u_long offset_high,
- ACE_HANDLE event,
- int priority,
- int signal_number = 0);
-
- virtual ACE_Asynch_Write_File_Result_Impl *create_asynch_write_file_result (const ACE_Handler::Proxy_Ptr &handler_proxy,
- ACE_HANDLE handle,
- ACE_Message_Block &message_block,
- size_t bytes_to_write,
- const void* act,
- u_long offset,
- u_long offset_high,
- ACE_HANDLE event,
- int priority,
- int signal_number = 0);
-
- /// Create the correct implementation class for ACE_Asynch_Read_Dgram::Result.
- virtual ACE_Asynch_Read_Dgram_Result_Impl *create_asynch_read_dgram_result (const ACE_Handler::Proxy_Ptr &handler_proxy,
- ACE_HANDLE handle,
- ACE_Message_Block *message_block,
- size_t bytes_to_read,
- int flags,
- int protocol_family,
- const void* act,
- ACE_HANDLE event,
- int priority,
- int signal_number = 0);
-
- /// Create the correct implementation class for ACE_Asynch_Write_Dgram::Result.
- virtual ACE_Asynch_Write_Dgram_Result_Impl *create_asynch_write_dgram_result (const ACE_Handler::Proxy_Ptr &handler_proxy,
- ACE_HANDLE handle,
- ACE_Message_Block *message_block,
- size_t bytes_to_write,
- int flags,
- const void* act,
- ACE_HANDLE event,
- int priority,
- int signal_number = 0);
-
- virtual ACE_Asynch_Accept_Result_Impl *create_asynch_accept_result (const ACE_Handler::Proxy_Ptr &handler_proxy,
- ACE_HANDLE listen_handle,
- ACE_HANDLE accept_handle,
- ACE_Message_Block &message_block,
- size_t bytes_to_read,
- const void* act,
- ACE_HANDLE event,
- int priority,
- int signal_number = 0);
-
- virtual ACE_Asynch_Connect_Result_Impl *create_asynch_connect_result (const ACE_Handler::Proxy_Ptr &handler_proxy,
- ACE_HANDLE connect_handle,
- const void *act,
- ACE_HANDLE event,
- int priority,
- int signal_number = 0);
-
-
- virtual ACE_Asynch_Transmit_File_Result_Impl *create_asynch_transmit_file_result (const ACE_Handler::Proxy_Ptr &handler_proxy,
- ACE_HANDLE socket,
- ACE_HANDLE file,
- ACE_Asynch_Transmit_File::Header_And_Trailer *header_and_trailer,
- size_t bytes_to_write,
- u_long offset,
- u_long offset_high,
- size_t bytes_per_send,
- u_long flags,
- const void *act,
- ACE_HANDLE event,
- int priority,
- int signal_number = 0);
-
- /// Create a timer result object which can be used with the Timer
- /// mechanism of the Proactor.
- virtual ACE_Asynch_Result_Impl *create_asynch_timer (const ACE_Handler::Proxy_Ptr &handler_proxy,
- const void *act,
- const ACE_Time_Value &tv,
- ACE_HANDLE event,
- int priority,
- int signal_number = 0);
-
-protected:
- /// Task to process pseudo-asynchronous operations
- ACE_Asynch_Pseudo_Task & get_asynch_pseudo_task (void);
-
- /// Called when object is signaled by OS (either via UNIX signals or
- /// when a Win32 object becomes signaled).
- virtual int handle_signal (int signum, siginfo_t * = 0, ucontext_t * = 0);
-
- /// Called when object is removed from the ACE_Reactor.
- virtual int handle_close (ACE_HANDLE handle,
- ACE_Reactor_Mask close_mask);
-
- /**
- * Dispatch a single set of events. If @a milli_seconds elapses
- * before any events occur, return 0. Return 1 if a completion is
- * dispatched. Return -1 on errors.
- */
- virtual int handle_events (unsigned long milli_seconds);
-
- /// Protect against structured exceptions caused by user code when
- /// dispatching handles.
- void application_specific_code (ACE_WIN32_Asynch_Result *asynch_result,
- size_t bytes_transferred,
- const void *completion_key,
- u_long error);
-
- /**
- * Post @a how_many completions to the completion port so that all
- * threads can wake up. This is used in conjunction with the
- * run_event_loop().
- */
- virtual int post_wakeup_completions (int how_many);
-
- /// Handle for the completion port. Unix doesnt have completion
- /// ports.
- ACE_HANDLE completion_port_;
-
- /// This number is passed to the @c CreateIOCompletionPort system
- /// call.
- DWORD number_of_threads_;
-
- /// This event is used in conjunction with Reactor when we try to
- /// integrate the event loops of Reactor and the Proactor.
- ACE_Auto_Event event_;
-
- /// Flag that indicates whether we are used in conjunction with
- /// Reactor.
- int used_with_reactor_event_loop_;
-
- /// Handler to handle the wakeups. This works in conjunction with the
- /// ACE_Proactor::run_event_loop().
- ACE_Handler wakeup_handler_;
-
- /// Pseudo-task for asynch connect ( NT/2000)
- /// In future should removed in XP with ConnectEx support
- ACE_Asynch_Pseudo_Task pseudo_task_;
-};
-
-/**
- * @class ACE_WIN32_Asynch_Timer
- *
- * @brief This class is posted to the completion port when a timer
- * expires. When the complete method of this object is
- * called, the <handler>'s handle_timeout method will be
- * called.
- */
-class ACE_WIN32_Asynch_Timer : public ACE_WIN32_Asynch_Result
-{
- /// The factory method for this class is with the POSIX_Proactor
- /// class.
- friend class ACE_WIN32_Proactor;
-
-protected:
- /// Constructor.
- ACE_WIN32_Asynch_Timer (const ACE_Handler::Proxy_Ptr &handler_proxy,
- const void *act,
- const ACE_Time_Value &tv,
- ACE_HANDLE event = ACE_INVALID_HANDLE,
- int priority = 0,
- int signal_number = 0);
-
- /// This method calls the <handler>'s handle_timeout method.
- virtual void complete (size_t bytes_transferred,
- int success,
- const void *completion_key,
- u_long error = 0);
-
- /// Time value requested by caller
- ACE_Time_Value time_;
-};
-
-ACE_END_VERSIONED_NAMESPACE_DECL
-
-#endif /* ACE_WIN32 */
-#include /**/ "ace/post.h"
-#endif /* ACE_PROACTOR_H */
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