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-rw-r--r--ace/POSIX_Proactor.cpp2000
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diff --git a/ace/POSIX_Proactor.cpp b/ace/POSIX_Proactor.cpp
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--- a/ace/POSIX_Proactor.cpp
+++ /dev/null
@@ -1,2000 +0,0 @@
-/* -*- C++ -*- */
-// $Id$
-
-#include "ace/POSIX_Proactor.h"
-
-#if defined (ACE_HAS_AIO_CALLS)
-
-#include "ace/ACE.h"
-#include "ace/Task_T.h"
-#include "ace/Log_Msg.h"
-#include "ace/Object_Manager.h"
-
-#if !defined (__ACE_INLINE__)
-#include "ace/POSIX_Proactor.i"
-#endif /* __ACE_INLINE__ */
-
-# if defined (ACE_HAS_SYSINFO)
-# include /**/ <sys/systeminfo.h>
-# endif /* ACE_HAS_SYS_INFO */
-
-// *********************************************************************
-/**
- * @class ACE_POSIX_Wakeup_Completion
- *
- * This result object is used by the <end_event_loop> of the
- * ACE_Proactor interface to wake up all the threads blocking
- * for completions.
- */
-class ACE_Export ACE_POSIX_Wakeup_Completion : public ACE_POSIX_Asynch_Result
-{
-public:
- /// Constructor.
- ACE_POSIX_Wakeup_Completion (ACE_Handler &handler,
- const void *act = 0,
- ACE_HANDLE event = ACE_INVALID_HANDLE,
- int priority = 0,
- int signal_number = ACE_SIGRTMIN);
-
- /// Destructor.
- virtual ~ACE_POSIX_Wakeup_Completion (void);
-
-
- /// This method calls the <handler>'s <handle_wakeup> method.
- virtual void complete (size_t bytes_transferred = 0,
- int success = 1,
- const void *completion_key = 0,
- u_long error = 0);
-};
-
-// *********************************************************************
-ACE_POSIX_Proactor::ACE_POSIX_Proactor (void)
- : os_id_ (OS_UNDEFINED)
-{
-#if defined(sun)
-
- os_id_ = OS_SUN; // set family
-
- char Buf [32];
-
- ::memset(Buf,0,sizeof(Buf));
-
- ACE_OS::sysinfo (SI_RELEASE , Buf, sizeof(Buf)-1);
-
- if (ACE_OS_String::strcasecmp (Buf , "5.6") == 0)
- os_id_ = OS_SUN_56;
- else if (ACE_OS_String::strcasecmp (Buf , "5.7") == 0)
- os_id_ = OS_SUN_57;
- else if (ACE_OS_String::strcasecmp (Buf , "5.8") == 0)
- os_id_ = OS_SUN_58;
-
-#elif defined(HPUX)
-
- os_id_ = OS_HPUX; // set family
-
-#elif defined(__sgi)
-
- os_id_ = OS_IRIX; // set family
-
-#elif defined(__OpenBSD)
-
- os_id_ = OS_OPENBSD; // set family
-
- // do the same
-
-//#else defined (LINUX, __FreeBSD__ ...)
-//setup here os_id_
-#endif
-}
-
-ACE_POSIX_Proactor::~ACE_POSIX_Proactor (void)
-{
- this->close ();
-}
-
-int
-ACE_POSIX_Proactor::close (void)
-{
- return 0;
-}
-
-int
-ACE_POSIX_Proactor::register_handle (ACE_HANDLE handle,
- const void *completion_key)
-{
- ACE_UNUSED_ARG (handle);
- ACE_UNUSED_ARG (completion_key);
- return 0;
-}
-
-int
-ACE_POSIX_Proactor::wake_up_dispatch_threads (void)
-{
- return 0;
-}
-
-int
-ACE_POSIX_Proactor::close_dispatch_threads (int)
-{
- return 0;
-}
-
-size_t
-ACE_POSIX_Proactor::number_of_threads (void) const
-{
- // @@ Implement it.
- ACE_NOTSUP_RETURN (0);
-}
-
-void
-ACE_POSIX_Proactor::number_of_threads (size_t threads)
-{
- // @@ Implement it.
- ACE_UNUSED_ARG (threads);
-}
-
-ACE_HANDLE
-ACE_POSIX_Proactor::get_handle (void) const
-{
- return ACE_INVALID_HANDLE;
-}
-
-ACE_Asynch_Read_Stream_Impl *
-ACE_POSIX_Proactor::create_asynch_read_stream (void)
-{
- ACE_Asynch_Read_Stream_Impl *implementation = 0;
- ACE_NEW_RETURN (implementation,
- ACE_POSIX_Asynch_Read_Stream (this),
- 0);
- return implementation;
-}
-
-ACE_Asynch_Read_Stream_Result_Impl *
-ACE_POSIX_Proactor::create_asynch_read_stream_result (ACE_Handler &handler,
- ACE_HANDLE handle,
- ACE_Message_Block &message_block,
- size_t bytes_to_read,
- const void* act,
- ACE_HANDLE event,
- int priority,
- int signal_number)
-{
- ACE_Asynch_Read_Stream_Result_Impl *implementation;
- ACE_NEW_RETURN (implementation,
- ACE_POSIX_Asynch_Read_Stream_Result (handler,
- handle,
- message_block,
- bytes_to_read,
- act,
- event,
- priority,
- signal_number),
- 0);
- return implementation;
-}
-
-
-ACE_Asynch_Write_Stream_Impl *
-ACE_POSIX_Proactor::create_asynch_write_stream (void)
-{
- ACE_Asynch_Write_Stream_Impl *implementation = 0;
- ACE_NEW_RETURN (implementation,
- ACE_POSIX_Asynch_Write_Stream (this),
- 0);
- return implementation;
-}
-
-ACE_Asynch_Write_Stream_Result_Impl *
-ACE_POSIX_Proactor::create_asynch_write_stream_result (ACE_Handler &handler,
- ACE_HANDLE handle,
- ACE_Message_Block &message_block,
- size_t bytes_to_write,
- const void* act,
- ACE_HANDLE event,
- int priority,
- int signal_number)
-{
- ACE_Asynch_Write_Stream_Result_Impl *implementation;
- ACE_NEW_RETURN (implementation,
- ACE_POSIX_Asynch_Write_Stream_Result (handler,
- handle,
- message_block,
- bytes_to_write,
- act,
- event,
- priority,
- signal_number),
- 0);
- return implementation;
-}
-
-
-ACE_Asynch_Read_File_Impl *
-ACE_POSIX_Proactor::create_asynch_read_file (void)
-{
- ACE_Asynch_Read_File_Impl *implementation = 0;
- ACE_NEW_RETURN (implementation,
- ACE_POSIX_Asynch_Read_File (this),
- 0);
- return implementation;
-}
-
-ACE_Asynch_Read_File_Result_Impl *
-ACE_POSIX_Proactor::create_asynch_read_file_result (ACE_Handler &handler,
- 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)
-{
- ACE_Asynch_Read_File_Result_Impl *implementation;
- ACE_NEW_RETURN (implementation,
- ACE_POSIX_Asynch_Read_File_Result (handler,
- handle,
- message_block,
- bytes_to_read,
- act,
- offset,
- offset_high,
- event,
- priority,
- signal_number),
- 0);
- return implementation;
-}
-
-
-ACE_Asynch_Write_File_Impl *
-ACE_POSIX_Proactor::create_asynch_write_file (void)
-{
- ACE_Asynch_Write_File_Impl *implementation = 0;
- ACE_NEW_RETURN (implementation,
- ACE_POSIX_Asynch_Write_File (this),
- 0);
- return implementation;
-}
-
-ACE_Asynch_Write_File_Result_Impl *
-ACE_POSIX_Proactor::create_asynch_write_file_result (ACE_Handler &handler,
- 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)
-{
- ACE_Asynch_Write_File_Result_Impl *implementation;
- ACE_NEW_RETURN (implementation,
- ACE_POSIX_Asynch_Write_File_Result (handler,
- handle,
- message_block,
- bytes_to_write,
- act,
- offset,
- offset_high,
- event,
- priority,
- signal_number),
- 0);
- return implementation;
-}
-
-
-ACE_Asynch_Read_Dgram_Impl *
-ACE_POSIX_Proactor::create_asynch_read_dgram (void)
-{
- ACE_Asynch_Read_Dgram_Impl *implementation = 0;
- ACE_NEW_RETURN (implementation,
- ACE_POSIX_Asynch_Read_Dgram (this),
- 0);
- return implementation;
-}
-
-ACE_Asynch_Read_Dgram_Result_Impl *
-ACE_POSIX_Proactor::create_asynch_read_dgram_result (ACE_Handler &handler,
- 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)
-{
- ACE_Asynch_Read_Dgram_Result_Impl *implementation=0;
- ACE_NEW_RETURN (implementation,
- ACE_POSIX_Asynch_Read_Dgram_Result(handler,
- handle,
- message_block,
- bytes_to_read,
- flags,
- protocol_family,
- act,
- event,
- priority,
- signal_number),
- 0);
-
- return implementation;
-}
-
-
-ACE_Asynch_Write_Dgram_Impl *
-ACE_POSIX_Proactor::create_asynch_write_dgram (void)
-{
- ACE_Asynch_Write_Dgram_Impl *implementation = 0;
- ACE_NEW_RETURN (implementation,
- ACE_POSIX_Asynch_Write_Dgram (this),
- 0);
-
- return implementation;
-}
-
-ACE_Asynch_Write_Dgram_Result_Impl *
-ACE_POSIX_Proactor::create_asynch_write_dgram_result (ACE_Handler &handler,
- 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)
-{
- ACE_Asynch_Write_Dgram_Result_Impl *implementation=0;
- ACE_NEW_RETURN (implementation,
- ACE_POSIX_Asynch_Write_Dgram_Result(handler,
- handle,
- message_block,
- bytes_to_write,
- flags,
- act,
- event,
- priority,
- signal_number),
- 0);
-
- return implementation;
-}
-
-
-ACE_Asynch_Accept_Impl *
-ACE_POSIX_Proactor::create_asynch_accept (void)
-{
- ACE_Asynch_Accept_Impl *implementation = 0;
- ACE_NEW_RETURN (implementation,
- ACE_POSIX_Asynch_Accept (this),
- 0);
-
- return implementation;
-}
-
-ACE_Asynch_Accept_Result_Impl *
-ACE_POSIX_Proactor::create_asynch_accept_result (ACE_Handler &handler,
- 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)
-{
- ACE_Asynch_Accept_Result_Impl *implementation;
- ACE_NEW_RETURN (implementation,
- ACE_POSIX_Asynch_Accept_Result (handler,
- listen_handle,
- accept_handle,
- message_block,
- bytes_to_read,
- act,
- event,
- priority,
- signal_number),
- 0);
- return implementation;
-}
-
-
-ACE_Asynch_Connect_Impl *
-ACE_POSIX_Proactor::create_asynch_connect (void)
-{
- ACE_Asynch_Connect_Impl *implementation = 0;
- ACE_NEW_RETURN (implementation,
- ACE_POSIX_Asynch_Connect (this),
- 0);
-
- return implementation;
-}
-
-ACE_Asynch_Connect_Result_Impl *
-ACE_POSIX_Proactor::create_asynch_connect_result (ACE_Handler &handler,
- ACE_HANDLE connect_handle,
- const void* act,
- ACE_HANDLE event,
- int priority,
- int signal_number)
-{
- ACE_Asynch_Connect_Result_Impl *implementation;
- ACE_NEW_RETURN (implementation,
- ACE_POSIX_Asynch_Connect_Result (handler,
- connect_handle,
- act,
- event,
- priority,
- signal_number),
- 0);
- return implementation;
-}
-
-
-ACE_Asynch_Transmit_File_Impl *
-ACE_POSIX_Proactor::create_asynch_transmit_file (void)
-{
- ACE_Asynch_Transmit_File_Impl *implementation = 0;
- ACE_NEW_RETURN (implementation,
- ACE_POSIX_Asynch_Transmit_File (this),
- 0);
- return implementation;
-}
-
-ACE_Asynch_Transmit_File_Result_Impl *
-ACE_POSIX_Proactor::create_asynch_transmit_file_result (ACE_Handler &handler,
- 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)
-{
- ACE_Asynch_Transmit_File_Result_Impl *implementation;
- ACE_NEW_RETURN (implementation,
- ACE_POSIX_Asynch_Transmit_File_Result (handler,
- socket,
- file,
- header_and_trailer,
- bytes_to_write,
- offset,
- offset_high,
- bytes_per_send,
- flags,
- act,
- event,
- priority,
- signal_number),
- 0);
- return implementation;
-}
-
-ACE_Asynch_Result_Impl *
-ACE_POSIX_Proactor::create_asynch_timer (ACE_Handler &handler,
- const void *act,
- const ACE_Time_Value &tv,
- ACE_HANDLE event,
- int priority,
- int signal_number)
-{
- ACE_Asynch_Result_Impl *implementation;
- ACE_NEW_RETURN (implementation,
- ACE_POSIX_Asynch_Timer (handler,
- act,
- tv,
- event,
- priority,
- signal_number),
- 0);
- return implementation;
-}
-
-#if 0
-int
-ACE_POSIX_Proactor::handle_signal (int, siginfo_t *, ucontext_t *)
-{
- // Perform a non-blocking "poll" for all the I/O events that have
- // completed in the I/O completion queue.
-
- ACE_Time_Value timeout (0, 0);
- int result = 0;
-
- for (;;)
- {
- result = this->handle_events (timeout);
- if (result != 0 || errno == ETIME)
- break;
- }
-
- // If our handle_events failed, we'll report a failure to the
- // Reactor.
- return result == -1 ? -1 : 0;
-}
-
-int
-ACE_POSIX_Proactor::handle_close (ACE_HANDLE handle,
- ACE_Reactor_Mask close_mask)
-{
- ACE_UNUSED_ARG (close_mask);
- ACE_UNUSED_ARG (handle);
-
- return this->close ();
-}
-#endif /* 0 */
-
-void
-ACE_POSIX_Proactor::application_specific_code (ACE_POSIX_Asynch_Result *asynch_result,
- size_t bytes_transferred,
- const void */* completion_key*/,
- u_long error)
-{
- ACE_SEH_TRY
- {
- // Call completion hook
- asynch_result->complete (bytes_transferred,
- error ? 0 : 1,
- 0, // No completion key.
- error);
- }
- ACE_SEH_FINALLY
- {
- // This is crucial to prevent memory leaks
- delete asynch_result;
- }
-}
-
-int
-ACE_POSIX_Proactor::post_wakeup_completions (int how_many)
-{
- ACE_POSIX_Wakeup_Completion *wakeup_completion = 0;
-
- for (int ci = 0; ci < how_many; ci++)
- {
- ACE_NEW_RETURN (wakeup_completion,
- ACE_POSIX_Wakeup_Completion (this->wakeup_handler_),
- -1);
- if (this->post_completion (wakeup_completion) == -1)
- return -1;
- }
-
- return 0;
-}
-
-/**
- * @class ACE_AIOCB_Notify_Pipe_Manager
- *
- * @brief This class manages the notify pipe of the AIOCB Proactor.
- *
- * This class acts as the Handler for the
- * <Asynch_Read> operations issued on the notify pipe. This
- * class is very useful in implementing <Asynch_Accept> operation
- * class for the <AIOCB_Proactor>. This is also useful for
- * implementing <post_completion> for <AIOCB_Proactor>.
-
- * <AIOCB_Proactor> class issues a <Asynch_Read> on
- * the pipe, using this class as the
- * Handler. <POSIX_Asynch_Result *>'s are sent through the
- * notify pipe. When <POSIX_Asynch_Result *>'s show up on the
- * notify pipe, the <POSIX_AIOCB_Proactor> dispatches the
- * completion of the <Asynch_Read_Stream> and calls the
- * <handle_read_stream> of this class. This class calls
- * <complete> on the <POSIX_Asynch_Result *> and thus calls the
- * application handler.
- * Handling the MessageBlock:
- * We give this message block to read the result pointer through
- * the notify pipe. We expect that to read 4 bytes from the
- * notify pipe, for each <accept> call. Before giving this
- * message block to another <accept>, we update <wr_ptr> and put
- * it in its initial position.
- */
-class ACE_Export ACE_AIOCB_Notify_Pipe_Manager : public ACE_Handler
-{
-public:
- /// Constructor. You need the posix proactor because you need to call
- /// <application_specific_code>
- ACE_AIOCB_Notify_Pipe_Manager (ACE_POSIX_AIOCB_Proactor *posix_aiocb_proactor);
-
- /// Destructor.
- virtual ~ACE_AIOCB_Notify_Pipe_Manager (void);
-
- /// Send the result pointer through the notification pipe.
- int notify ();
-
- /// This is the call back method when <Asynch_Read> from the pipe is
- /// complete.
- virtual void handle_read_stream (const ACE_Asynch_Read_Stream::Result &result);
-
-private:
- /// The implementation proactor class.
- ACE_POSIX_AIOCB_Proactor *posix_aiocb_proactor_;
-
- /// Message block to get ACE_POSIX_Asynch_Result pointer from the pipe.
- ACE_Message_Block message_block_;
-
- /// Pipe for the communication between Proactor and the
- /// Asynch_Accept/Asynch_Connect and other post_completions
- ACE_Pipe pipe_;
-
- /// To do asynch_read on the pipe.
- ACE_POSIX_Asynch_Read_Stream read_stream_;
-
- /// Default constructor. Shouldnt be called.
- ACE_AIOCB_Notify_Pipe_Manager (void);
-};
-
-ACE_AIOCB_Notify_Pipe_Manager::ACE_AIOCB_Notify_Pipe_Manager (ACE_POSIX_AIOCB_Proactor *posix_aiocb_proactor)
- : posix_aiocb_proactor_ (posix_aiocb_proactor),
- message_block_ (sizeof (2)),
- read_stream_ (posix_aiocb_proactor)
-{
- // Open the pipe.
- this->pipe_.open ();
-
- // Set write side in NONBLOCK mode
- ACE::set_flags (this->pipe_.write_handle (), ACE_NONBLOCK);
-
- // Let AIOCB_Proactor know about our handle
- posix_aiocb_proactor_->set_notify_handle (this->pipe_.read_handle ());
-
- // Open the read stream.
- if (this->read_stream_.open (*this,
- this->pipe_.read_handle (),
- 0, // Completion Key
- 0) // Proactor
- == -1)
- ACE_ERROR ((LM_ERROR,
- "%N:%l:%p\n",
- "ACE_AIOCB_Notify_Pipe_Manager::ACE_AIOCB_Notify_Pipe_Manager:"
- "Open on Read Stream failed"));
-
- // Issue an asynch_read on the read_stream of the notify pipe.
- if (this->read_stream_.read (this->message_block_,
- 1, // enough to read 1 byte
- 0, // ACT
- 0) // Priority
- == -1)
- ACE_ERROR ((LM_ERROR,
- "%N:%l:%p\n",
- "ACE_AIOCB_Notify_Pipe_Manager::ACE_AIOCB_Notify_Pipe_Manager:"
- "Read from pipe failed"));
-}
-
-ACE_AIOCB_Notify_Pipe_Manager::~ACE_AIOCB_Notify_Pipe_Manager (void)
-{
- // 1. try to cancel pending aio
- this->read_stream_.cancel ();
-
- // 2. close both handles
- // Destuctor of ACE_Pipe does not close handles.
- // We can not use ACE_Pipe::close() as it
- // closes read_handle and than write_handle.
- // In some systems close() may wait for
- // completion for all asynch. pending requests.
- // So we should close write_handle firstly
- // to force read completion ( if 1. does not help )
- // and then read_handle and not vice versa
-
- ACE_HANDLE h = this->pipe_.write_handle ();
- if (h != ACE_INVALID_HANDLE)
- ACE_OS::closesocket (h);
-
- h = this->pipe_.read_handle ();
- if ( h != ACE_INVALID_HANDLE)
- ACE_OS::closesocket (h);
-
-}
-
-
-int
-ACE_AIOCB_Notify_Pipe_Manager::notify ()
-{
- // Send the result pointer through the pipe.
- char char_send = 0;
- int ret_val = ACE::send (this->pipe_.write_handle (),
- &char_send,
- sizeof (char_send));
-
- if (ret_val < 0)
- {
- if (errno != EWOULDBLOCK)
-#if 0
- ACE_ERROR ((LM_ERROR,
- ACE_LIB_TEXT ("(%P %t):%p\n"),
- ACE_LIB_TEXT ("ACE_AIOCB_Notify_Pipe_Manager::notify")
- ACE_LIB_TEXT ("Error:Writing on to notify pipe failed")));
-#endif /* 0 */
- return -1;
- }
-
- return 0;
-}
-
-void
-ACE_AIOCB_Notify_Pipe_Manager::handle_read_stream
- (const ACE_Asynch_Read_Stream::Result & /*result*/)
-{
- // 1. Start new read to avoid pipe overflow
-
- // Set the message block properly. Put the <wr_ptr> back in the
- // initial position.
- if (this->message_block_.length () > 0)
- this->message_block_.wr_ptr (this->message_block_.rd_ptr ());
-
- // One accept has completed. Issue a read to handle any
- // <post_completion>s in the future.
- if (-1 == this->read_stream_.read (this->message_block_,
- 1, // enough to read 1 byte
- 0, // ACT
- 0)) // Priority
- ACE_ERROR ((LM_ERROR,
- ACE_LIB_TEXT ("%N:%l:(%P | %t):%p\n"),
- ACE_LIB_TEXT ("ACE_AIOCB_Notify_Pipe_Manager::handle_read_stream:")
- ACE_LIB_TEXT ("Read from pipe failed")));
-
-
- // 2. Do the upcalls
- // this->posix_aiocb_proactor_->process_result_queue ();
-}
-
-// Public constructor for common use.
-ACE_POSIX_AIOCB_Proactor::ACE_POSIX_AIOCB_Proactor (size_t max_aio_operations)
- : aiocb_notify_pipe_manager_ (0),
- aiocb_list_ (0),
- result_list_ (0),
- aiocb_list_max_size_ (max_aio_operations),
- aiocb_list_cur_size_ (0),
- notify_pipe_read_handle_ (ACE_INVALID_HANDLE),
- num_deferred_aiocb_ (0),
- num_started_aio_ (0)
-{
- // Check for correct value for max_aio_operations
- check_max_aio_num ();
-
- this->create_result_aiocb_list ();
-
- this->create_notify_manager ();
-
- // start pseudo-asynchronous accept task
- // one per all future acceptors
- this->get_asynch_pseudo_task().start ();
-
-}
-
-// Special protected constructor for ACE_SUN_Proactor
-ACE_POSIX_AIOCB_Proactor::ACE_POSIX_AIOCB_Proactor (size_t max_aio_operations,
- ACE_POSIX_Proactor::Proactor_Type)
- : aiocb_notify_pipe_manager_ (0),
- aiocb_list_ (0),
- result_list_ (0),
- aiocb_list_max_size_ (max_aio_operations),
- aiocb_list_cur_size_ (0),
- notify_pipe_read_handle_ (ACE_INVALID_HANDLE),
- num_deferred_aiocb_ (0),
- num_started_aio_ (0)
-{
- //check for correct value for max_aio_operations
- this->check_max_aio_num ();
-
- this->create_result_aiocb_list ();
-
- // @@ We should create Notify_Pipe_Manager in the derived class to
- // provide correct calls for virtual functions !!!
-}
-
-// Destructor.
-ACE_POSIX_AIOCB_Proactor::~ACE_POSIX_AIOCB_Proactor (void)
-{
- this->close();
-}
-
-int
-ACE_POSIX_AIOCB_Proactor::close (void)
-{
- // stop asynch accept task
- this->get_asynch_pseudo_task().stop ();
-
- this->delete_notify_manager ();
-
- this->clear_result_queue ();
-
- return this->delete_result_aiocb_list ();
-}
-
-void ACE_POSIX_AIOCB_Proactor::set_notify_handle (ACE_HANDLE h)
-{
- notify_pipe_read_handle_ = h;
-}
-
-int ACE_POSIX_AIOCB_Proactor::create_result_aiocb_list (void)
-{
- if (aiocb_list_ != 0)
- return 0;
-
- ACE_NEW_RETURN (aiocb_list_, aiocb *[aiocb_list_max_size_], -1);
-
- ACE_NEW_RETURN (result_list_,
- ACE_POSIX_Asynch_Result *[aiocb_list_max_size_],
- -1);
-
- // Initialize the array.
- for (size_t ai = 0; ai < this->aiocb_list_max_size_; ai++)
- {
- aiocb_list_[ai] = 0;
- result_list_[ai] = 0;
- }
-
- return 0;
-}
-
-int ACE_POSIX_AIOCB_Proactor::delete_result_aiocb_list (void)
-{
- if (aiocb_list_ == 0) // already deleted
- return 0;
-
- size_t ai;
-
- // Try to cancel all uncomlpeted operarion POSIX systems may have
- // hidden system threads that still can work with our aiocb's!
- for (ai = 0; ai < aiocb_list_max_size_; ai++)
- if (this->aiocb_list_[ai] != 0) // active operation
- this->cancel_aiocb (result_list_[ai]);
-
- int num_pending = 0;
-
- for (ai = 0; ai < aiocb_list_max_size_; ai++)
- {
- if (this->aiocb_list_[ai] == 0 ) // not active operation
- continue;
-
- // Get the error and return status of the aio_ operation.
- int error_status = 0;
- size_t transfer_count = 0;
- int flg_completed = this->get_result_status (result_list_[ai],
- error_status,
- transfer_count);
-
- //don't delete uncompleted AIOCB's
- if (flg_completed == 0) // not completed !!!
- {
- num_pending++;
-#if 0
- char * errtxt = ACE_OS::strerror (error_status);
- if (errtxt == 0)
- errtxt ="?????????";
-
- char * op = (aiocb_list_[ai]->aio_lio_opcode == LIO_WRITE )?
- "WRITE":"READ" ;
-
-
- ACE_ERROR ((LM_ERROR,
- ACE_LIB_TEXT("slot=%d op=%s status=%d xfercnt=%d %s\n"),
- ai,
- op,
- error_status,
- transfer_count,
- errtxt));
-#endif /* 0 */
- }
- else // completed , OK
- {
- delete this->result_list_[ai];
- this->result_list_[ai] = 0;
- this->aiocb_list_[ai] = 0;
- }
- }
-
- // If it is not possible cancel some operation (num_pending > 0 ),
- // we can do only one thing -report about this
- // and complain about POSIX implementation.
- // We know that we have memory leaks, but it is better than
- // segmentation fault!
- ACE_DEBUG
- ((LM_DEBUG,
- ACE_LIB_TEXT("ACE_POSIX_AIOCB_Proactor::delete_result_aiocb_list\n")
- ACE_LIB_TEXT(" number pending AIO=%d\n"),
- num_pending));
-
- delete [] this->aiocb_list_;
- this->aiocb_list_ = 0;
-
- delete [] this->result_list_;
- this->result_list_ = 0;
-
- return (num_pending == 0 ? 0 : -1);
- // ?? or just always return 0;
-}
-
-void ACE_POSIX_AIOCB_Proactor::check_max_aio_num ()
-{
- long max_os_aio_num = ACE_OS::sysconf (_SC_AIO_MAX);
-
- // Define max limit AIO's for concrete OS
- // -1 means that there is no limit, but it is not true
- // (example, SunOS 5.6)
-
- if (max_os_aio_num > 0 &&
- aiocb_list_max_size_ > (unsigned long) max_os_aio_num)
- aiocb_list_max_size_ = max_os_aio_num;
-
-#if defined (HPUX)
- // Although HPUX 11.00 allows to start 2048 AIO's
- // for all process in system
- // it has a limit 256 max elements for aio_suspend ()
- // It is a pity, but ...
-
- long max_os_listio_num = ACE_OS::sysconf (_SC_AIO_LISTIO_MAX);
- if (max_os_listio_num > 0
- && aiocb_list_max_size_ > (unsigned long) max_os_listio_num)
- aiocb_list_max_size_ = max_os_listio_num;
-#endif /* HPUX */
-
- // check for user-defined value
- // ACE_AIO_MAX_SIZE if defined in POSIX_Proactor.h
-
- if (aiocb_list_max_size_ <= 0
- || aiocb_list_max_size_ > ACE_AIO_MAX_SIZE)
- aiocb_list_max_size_ = ACE_AIO_MAX_SIZE;
-
- // check for max number files to open
-
- int max_num_files = ACE::max_handles ();
-
- if (max_num_files > 0
- && aiocb_list_max_size_ > (unsigned long) max_num_files)
- {
- ACE::set_handle_limit (aiocb_list_max_size_);
-
- max_num_files = ACE::max_handles ();
- }
-
- if (max_num_files > 0
- && aiocb_list_max_size_ > (unsigned long) max_num_files)
- aiocb_list_max_size_ = (unsigned long) max_num_files;
-
- ACE_DEBUG ((LM_DEBUG,
- "(%P | %t) ACE_POSIX_AIOCB_Proactor::Max Number of AIOs=%d\n",
- aiocb_list_max_size_));
-
-#if defined(__sgi)
-
- ACE_DEBUG((LM_DEBUG,
- ACE_LIB_TEXT( "SGI IRIX specific: aio_init!\n")));
-
-//typedef struct aioinit {
-// int aio_threads; /* The number of aio threads to start (5) */
-// int aio_locks; /* Initial number of preallocated locks (3) */
-// int aio_num; /* estimated total simultanious aiobc structs (1000) */
-// int aio_usedba; /* Try to use DBA for raw I/O in lio_listio (0) */
-// int aio_debug; /* turn on debugging (0) */
-// int aio_numusers; /* max number of user sprocs making aio_* calls (5) */
-// int aio_reserved[3];
-//} aioinit_t;
-
- aioinit_t aioinit;
-
- aioinit.aio_threads = 10; /* The number of aio threads to start (5) */
- aioinit.aio_locks = 20; /* Initial number of preallocated locks (3) */
- /* estimated total simultaneous aiobc structs (1000) */
- aioinit.aio_num = aiocb_list_max_size_;
- aioinit.aio_usedba = 0; /* Try to use DBA for raw IO in lio_listio (0) */
- aioinit.aio_debug = 0; /* turn on debugging (0) */
- aioinit.aio_numusers = 100; /* max number of user sprocs making aio_* calls (5) */
- aioinit.aio_reserved[0] = 0;
- aioinit.aio_reserved[1] = 0;
- aioinit.aio_reserved[2] = 0;
-
- aio_sgi_init (&aioinit);
-
-#endif
-
- return;
-}
-
-void
-ACE_POSIX_AIOCB_Proactor::create_notify_manager (void)
-{
- // Remember! this issues a Asynch_Read
- // on the notify pipe for doing the Asynch_Accept/Connect.
-
- if (aiocb_notify_pipe_manager_ == 0)
- ACE_NEW (aiocb_notify_pipe_manager_,
- ACE_AIOCB_Notify_Pipe_Manager (this));
-}
-
-void
-ACE_POSIX_AIOCB_Proactor::delete_notify_manager (void)
-{
- // We are responsible for delete as all pointers set to 0 after
- // delete, it is save to delete twice
-
- delete aiocb_notify_pipe_manager_;
- aiocb_notify_pipe_manager_ = 0;
-}
-
-int
-ACE_POSIX_AIOCB_Proactor::handle_events (ACE_Time_Value &wait_time)
-{
- // Decrement <wait_time> with the amount of time spent in the method
- ACE_Countdown_Time countdown (&wait_time);
- return this->handle_events_i (wait_time.msec ());
-}
-
-int
-ACE_POSIX_AIOCB_Proactor::handle_events (void)
-{
- return this->handle_events_i (ACE_INFINITE);
-}
-
-int
-ACE_POSIX_AIOCB_Proactor::notify_completion(int sig_num)
-{
- ACE_UNUSED_ARG (sig_num);
-
- return this->aiocb_notify_pipe_manager_->notify ();
-}
-
-int
-ACE_POSIX_AIOCB_Proactor::post_completion (ACE_POSIX_Asynch_Result *result)
-{
- ACE_MT (ACE_GUARD_RETURN (ACE_SYNCH_MUTEX, ace_mon, this->mutex_, -1));
-
- int ret_val = this->putq_result (result);
-
- return ret_val;
-}
-
-int
-ACE_POSIX_AIOCB_Proactor::putq_result (ACE_POSIX_Asynch_Result *result)
-{
- // this protected method should be called with locked mutex_
- // we can't use GUARD as Proactor uses non-recursive mutex
-
- if (!result)
- return -1;
-
- int sig_num = result->signal_number ();
- int ret_val = this->result_queue_.enqueue_tail (result);
-
- if (ret_val == -1)
- ACE_ERROR_RETURN ((LM_ERROR,
- "%N:%l:ACE_POSIX_AIOCB_Proactor::putq_result failed\n"),
- -1);
-
- this->notify_completion (sig_num);
-
- return 0;
-}
-
-ACE_POSIX_Asynch_Result * ACE_POSIX_AIOCB_Proactor::getq_result (void)
-{
- ACE_MT (ACE_GUARD_RETURN (ACE_SYNCH_MUTEX, ace_mon, this->mutex_, 0));
-
-
- ACE_POSIX_Asynch_Result* result = 0;
-
- if (this->result_queue_.dequeue_head (result) != 0)
- return 0;
-
-// don;t waste time if queue is empty - it is normal
-// or check queue size before dequeue_head
-// ACE_ERROR_RETURN ((LM_ERROR,
-// "%N:%l:(%P | %t):%p\n",
-// "ACE_POSIX_AIOCB_Proactor::getq_result failed"),
-// 0);
-
- return result;
-}
-
-int ACE_POSIX_AIOCB_Proactor::clear_result_queue (void)
-{
- int ret_val = 0;
- ACE_POSIX_Asynch_Result* result = 0;
-
- while ((result = this->getq_result ()) != 0)
- {
- delete result;
- ret_val++;
- }
-
- return ret_val;
-}
-
-int ACE_POSIX_AIOCB_Proactor::process_result_queue (void)
-{
- int ret_val = 0;
- ACE_POSIX_Asynch_Result* result = 0;
-
- while ((result = this->getq_result ()) != 0)
- {
- this->application_specific_code
- (result,
- result->bytes_transferred(), // 0, No bytes transferred.
- 0, // No completion key.
- result->error()); //0, No error.
-
- ret_val++;
- }
-
- return ret_val;
-}
-
-int
-ACE_POSIX_AIOCB_Proactor::handle_events_i (u_long milli_seconds)
-{
- int result_suspend = 0;
- int retval= 0;
-
- if (milli_seconds == ACE_INFINITE)
- // Indefinite blocking.
- result_suspend = aio_suspend (aiocb_list_,
- aiocb_list_max_size_,
- 0);
- else
- {
- // Block on <aio_suspend> for <milli_seconds>
- timespec timeout;
- timeout.tv_sec = milli_seconds / 1000;
- timeout.tv_nsec = (milli_seconds - (timeout.tv_sec * 1000)) * 1000000;
- result_suspend = aio_suspend (aiocb_list_,
- aiocb_list_max_size_,
- &timeout);
- }
-
- // Check for errors
- if (result_suspend == -1)
- {
- if (errno != EAGAIN && // Timeout
- errno != EINTR ) // Interrupted call
- ACE_ERROR ((LM_ERROR,
- "%N:%l:(%P | %t)::%p\n",
- "ACE_POSIX_AIOCB_Proactor::handle_events:"
- "aio_suspend failed\n"));
-
- // let continue work
- // we should check "post_completed" queue
- }
- else
- {
- size_t index = 0;
- size_t count = aiocb_list_max_size_; // max number to iterate
- int error_status = 0;
- size_t transfer_count = 0;
-
- for (;; retval++)
- {
- ACE_POSIX_Asynch_Result *asynch_result =
- find_completed_aio (error_status,
- transfer_count,
- index,
- count);
-
- if (asynch_result == 0)
- break;
-
- // Call the application code.
- this->application_specific_code (asynch_result,
- transfer_count,
- 0, // No completion key.
- error_status);
- }
- }
-
- // process post_completed results
- retval += this->process_result_queue ();
-
- return retval > 0 ? 1 : 0;
-}
-
-int
-ACE_POSIX_AIOCB_Proactor::get_result_status (ACE_POSIX_Asynch_Result *asynch_result,
- int &error_status,
- size_t &transfer_count)
-{
- transfer_count = 0;
-
- // Get the error status of the aio_ operation.
- error_status = aio_error (asynch_result);
- if (error_status == EINPROGRESS)
- return 0; // not completed
-
- ssize_t op_return = aio_return (asynch_result);
- if (op_return > 0)
- transfer_count = ACE_static_cast (size_t, op_return);
- // else transfer_count is already 0, error_status reports the error.
- return 1; // completed
-}
-
-ACE_POSIX_Asynch_Result *
-ACE_POSIX_AIOCB_Proactor::find_completed_aio (int &error_status,
- size_t &transfer_count,
- size_t &index,
- size_t &count)
-{
- // parameter index defines initial slot to scan
- // parameter count tells us how many slots should we scan
-
- ACE_MT (ACE_GUARD_RETURN (ACE_Thread_Mutex, ace_mon, this->mutex_, 0));
-
- ACE_POSIX_Asynch_Result *asynch_result = 0;
-
- if (num_started_aio_ == 0) // save time
- return 0;
-
- for (; count > 0; index++ , count--)
- {
- if (index >= aiocb_list_max_size_) // like a wheel
- index = 0;
-
- if (aiocb_list_[index] == 0) // Dont process null blocks.
- continue;
-
- if (0 != this->get_result_status (result_list_[index],
- error_status,
- transfer_count)) // completed
- break;
-
- } // end for
-
- if (count == 0) // all processed , nothing found
- return 0;
- asynch_result = result_list_[index];
-
- aiocb_list_[index] = 0;
- result_list_[index] = 0;
- aiocb_list_cur_size_--;
-
- num_started_aio_--; // decrement count active aios
- index++; // for next iteration
- count--; // for next iteration
-
- this->start_deferred_aio ();
- //make attempt to start deferred AIO
- //It is safe as we are protected by mutex_
-
- return asynch_result;
-}
-
-
-int
-ACE_POSIX_AIOCB_Proactor::start_aio (ACE_POSIX_Asynch_Result *result,
- ACE_POSIX_Proactor::Opcode op)
-{
- ACE_TRACE ("ACE_POSIX_AIOCB_Proactor::start_aio");
-
- ACE_MT (ACE_GUARD_RETURN (ACE_Thread_Mutex, ace_mon, this->mutex_, -1));
-
- int ret_val = (aiocb_list_cur_size_ >= aiocb_list_max_size_) ? -1 : 0;
-
- if (result == 0) // Just check the status of the list
- return ret_val;
-
- // Save operation code in the aiocb
- switch (op)
- {
- case ACE_POSIX_Proactor::READ:
- result->aio_lio_opcode = LIO_READ;
- break;
-
- case ACE_POSIX_Proactor::WRITE:
- result->aio_lio_opcode = LIO_WRITE;
- break;
-
- default:
- ACE_ERROR_RETURN ((LM_ERROR,
- "%N:%l:(%P | %t)::\n"
- "start_aio: Invalid operation code\n"),
- -1);
- }
-
- if (ret_val != 0) // No free slot
- {
- errno = EAGAIN;
- return -1;
- }
-
- // Find a free slot and store.
-
- ssize_t slot = allocate_aio_slot (result);
-
- if (slot < 0)
- return -1;
-
- size_t index = ACE_static_cast (size_t, slot);
-
- result_list_[index] = result; //Store result ptr anyway
- aiocb_list_cur_size_++;
-
- ret_val = start_aio_i (result);
- switch (ret_val)
- {
- case 0: // started OK
- aiocb_list_[index] = result;
- return 0;
-
- case 1: // OS AIO queue overflow
- num_deferred_aiocb_ ++;
- return 0;
-
- default: // Invalid request, there is no point
- break; // to start it later
- }
-
- result_list_[index] = 0;
- aiocb_list_cur_size_--;
- return -1;
-}
-
-ssize_t
-ACE_POSIX_AIOCB_Proactor::allocate_aio_slot (ACE_POSIX_Asynch_Result *result)
-{
- size_t i = 0;
-
- // we reserve zero slot for ACE_AIOCB_Notify_Pipe_Manager
- // so make check for ACE_AIOCB_Notify_Pipe_Manager request
-
- if (notify_pipe_read_handle_ == result->aio_fildes) // Notify_Pipe ?
- { // should be free,
- if (result_list_[i] != 0) // only 1 request
- { // is allowed
- errno = EAGAIN;
- ACE_ERROR_RETURN ((LM_ERROR,
- "%N:%l:(%P | %t)::\n"
- "ACE_POSIX_AIOCB_Proactor::allocate_aio_slot:"
- "internal Proactor error 0\n"),
- -1);
- }
- }
- else //try to find free slot as usual, but starting from 1
- {
- for (i= 1; i < this->aiocb_list_max_size_; i++)
- if (result_list_[i] == 0)
- break;
- }
-
- if (i >= this->aiocb_list_max_size_)
- ACE_ERROR_RETURN ((LM_ERROR,
- "%N:%l:(%P | %t)::\n"
- "ACE_POSIX_AIOCB_Proactor::allocate_aio_slot:"
- "internal Proactor error 1\n"),
- -1);
-
- //setup OS notification methods for this aio
- result->aio_sigevent.sigev_notify = SIGEV_NONE;
-
- return ACE_static_cast (ssize_t, i);
-}
-
-// start_aio_i has new return codes
-// 0 AIO was started successfully
-// 1 AIO was not started, OS AIO queue overflow
-// -1 AIO was not started, other errors
-
-int
-ACE_POSIX_AIOCB_Proactor::start_aio_i (ACE_POSIX_Asynch_Result *result)
-{
- ACE_TRACE ("ACE_POSIX_AIOCB_Proactor::start_aio_i");
-
- int ret_val;
- const ACE_TCHAR *ptype;
-
- // Start IO
-
- switch (result->aio_lio_opcode )
- {
- case LIO_READ :
- ptype = ACE_LIB_TEXT ("read ");
- ret_val = aio_read (result);
- break;
- case LIO_WRITE :
- ptype = ACE_LIB_TEXT ("write");
- ret_val = aio_write (result);
- break;
- default:
- ptype = ACE_LIB_TEXT ("?????");
- ret_val = -1;
- break;
- }
-
- if (ret_val == 0)
- this->num_started_aio_++;
- else // if (ret_val == -1)
- {
- if (errno == EAGAIN || errno == ENOMEM) //Ok, it will be deferred AIO
- ret_val = 1;
- else
- ACE_ERROR ((LM_ERROR,
- ACE_LIB_TEXT ("%N:%l:(%P | %t)::start_aio_i: aio_%s %p\n"),
- ptype,
- ACE_LIB_TEXT ("queueing failed\n")));
- }
-
- return ret_val;
-}
-
-
-int
-ACE_POSIX_AIOCB_Proactor::start_deferred_aio ()
-{
- ACE_TRACE ("ACE_POSIX_AIOCB_Proactor::start_deferred_aio");
-
- // This protected method is called from
- // find_completed_aio after any AIO completion
- // We should call this method always with locked
- // ACE_POSIX_AIOCB_Proactor::mutex_
- //
- // It tries to start the first deferred AIO
- // if such exists
-
- if (num_deferred_aiocb_ == 0)
- return 0; // nothing to do
-
- size_t i = 0;
-
- for (i= 0; i < this->aiocb_list_max_size_; i++)
- if (result_list_[i] !=0 // check for
- && aiocb_list_[i] ==0) // deferred AIO
- break;
-
- if (i >= this->aiocb_list_max_size_)
- ACE_ERROR_RETURN ((LM_ERROR,
- "%N:%l:(%P | %t)::\n"
- "start_deferred_aio:"
- "internal Proactor error 3\n"),
- -1);
-
- ACE_POSIX_Asynch_Result *result = result_list_[i];
-
- int ret_val = start_aio_i (result);
-
- switch (ret_val)
- {
- case 0 : //started OK , decrement count of deferred AIOs
- aiocb_list_[i] = result;
- num_deferred_aiocb_ --;
- return 0;
-
- case 1 :
- return 0; //try again later
-
- default : // Invalid Parameters , should never be
- break;
- }
-
- //AL notify user
-
- result_list_[i] = 0;
- aiocb_list_cur_size_--;
-
- num_deferred_aiocb_ --;
-
- result->set_error (errno);
- result->set_bytes_transferred (0);
- this->putq_result (result); // we are with locked mutex_ here !
-
- return -1;
-}
-
-int
-ACE_POSIX_AIOCB_Proactor::cancel_aio (ACE_HANDLE handle)
-{
- // This new method should be called from
- // ACE_POSIX_Asynch_Operation instead of usual ::aio_cancel
- // It scans the result_list_ and defines all AIO requests
- // that were issued for handle "handle"
- //
- // For all deferred AIO requests with handle "handle"
- // it removes its from the lists and notifies user
- //
- // For all running AIO requests with handle "handle"
- // it calls ::aio_cancel. According to the POSIX standards
- // we will receive ECANCELED for all ::aio_canceled AIO requests
- // later on return from ::aio_suspend
-
- ACE_TRACE ("ACE_POSIX_AIOCB_Proactor::cancel_aio");
-
- int num_total = 0;
- int num_cancelled = 0;
-
- {
- ACE_MT (ACE_GUARD_RETURN (ACE_Thread_Mutex, ace_mon, this->mutex_, -1));
-
- size_t ai = 0;
-
- for (ai = 0; ai < this->aiocb_list_max_size_; ai++)
- {
- if (this->result_list_[ai] == 0) // Skip empty slot
- continue;
-
- if (this->result_list_[ai]->aio_fildes != handle) // Not ours
- continue;
-
- num_total++;
-
- ACE_POSIX_Asynch_Result *asynch_result = this->result_list_[ai];
-
- if (this->aiocb_list_[ai] == 0) // Canceling a deferred operation
- {
- num_cancelled++;
- this->num_deferred_aiocb_--;
-
- this->aiocb_list_[ai] = 0;
- this->result_list_[ai] = 0;
- this->aiocb_list_cur_size_--;
-
- asynch_result->set_error (ECANCELED);
- asynch_result->set_bytes_transferred (0);
- this->putq_result (asynch_result);
- // we are with locked mutex_ here !
- }
- else // Cancel started aio
- {
- int rc_cancel = this->cancel_aiocb (asynch_result);
-
- if (rc_cancel == 0) //notification in the future
- num_cancelled++; //it is OS responsiblity
- }
- }
-
- } // release mutex_
-
- if (num_total == 0)
- return 1; // ALLDONE
-
- if (num_cancelled == num_total)
- return 0; // CANCELLED
-
- return 2; // NOT CANCELLED
-}
-
-int
-ACE_POSIX_AIOCB_Proactor::cancel_aiocb (ACE_POSIX_Asynch_Result * result)
-{
- // This method is called from cancel_aio
- // to cancel a previously submitted AIO request
- int rc = ::aio_cancel (0, result);
-
- // Check the return value and return 0/1/2 appropriately.
- if (rc == AIO_CANCELED)
- return 0;
- else if (rc == AIO_ALLDONE)
- return 1;
- else // (rc == AIO_NOTCANCELED)
- return 2;
-}
-
-
-// *********************************************************************
-
-#if defined(ACE_HAS_POSIX_REALTIME_SIGNALS)
-
-ACE_POSIX_SIG_Proactor::ACE_POSIX_SIG_Proactor (size_t max_aio_operations)
- : ACE_POSIX_AIOCB_Proactor (max_aio_operations,
- ACE_POSIX_Proactor::PROACTOR_SIG)
-{
- // = Set up the mask we'll use to block waiting for SIGRTMIN. Use that
- // to add it to the signal mask for this thread, and also set the process
- // signal action to pass signal information when we want it.
-
- // Clear the signal set.
- ACE_OS::sigemptyset (&this->RT_completion_signals_);
-
- // Add the signal number to the signal set.
- if (ACE_OS::sigaddset (&this->RT_completion_signals_, ACE_SIGRTMIN) == -1)
- ACE_ERROR ((LM_ERROR, ACE_LIB_TEXT ("ACE_POSIX_SIG_Proactor: %p\n"),
- ACE_LIB_TEXT ("sigaddset")));
- this->block_signals ();
- // Set up the signal action for SIGRTMIN.
- this->setup_signal_handler (ACE_SIGRTMIN);
-
- // we do not have to create notify manager
- // but we should start pseudo-asynchronous accept task
- // one per all future acceptors
-
- this->get_asynch_pseudo_task().start ();
- return;
-}
-
-ACE_POSIX_SIG_Proactor::ACE_POSIX_SIG_Proactor (const sigset_t signal_set,
- size_t max_aio_operations)
- : ACE_POSIX_AIOCB_Proactor (max_aio_operations,
- ACE_POSIX_Proactor::PROACTOR_SIG)
-{
- // = Keep <Signal_set> with the Proactor, mask all the signals and
- // setup signal actions for the signals in the <signal_set>.
-
- // = Keep <signal_set> with the Proactor.
-
- // Empty the signal set first.
- if (sigemptyset (&this->RT_completion_signals_) == -1)
- ACE_ERROR ((LM_ERROR,
- "Error:(%P | %t):%p\n",
- "sigemptyset failed"));
-
- // For each signal number present in the <signal_set>, add it to
- // the signal set we use, and also set up its process signal action
- // to allow signal info to be passed into sigwait/sigtimedwait.
- int member = 0;
- for (int si = ACE_SIGRTMIN; si <= ACE_SIGRTMAX; si++)
- {
- member = sigismember (&signal_set,
- si);
- if (member == -1)
- ACE_ERROR ((LM_ERROR,
- "%N:%l:(%P | %t)::%p\n",
- "ACE_POSIX_SIG_Proactor::ACE_POSIX_SIG_Proactor:"
- "sigismember failed"));
- else if (member == 1)
- {
- sigaddset (&this->RT_completion_signals_, si);
- this->setup_signal_handler (si);
- }
- }
-
- // Mask all the signals.
- this->block_signals ();
-
- // we do not have to create notify manager
- // but we should start pseudo-asynchronous accept task
- // one per all future acceptors
-
- this->get_asynch_pseudo_task().start ();
- return;
-}
-
-ACE_POSIX_SIG_Proactor::~ACE_POSIX_SIG_Proactor (void)
-{
- this->close ();
-
- // @@ Enable the masked signals again.
-}
-
-int
-ACE_POSIX_SIG_Proactor::handle_events (ACE_Time_Value &wait_time)
-{
- // Decrement <wait_time> with the amount of time spent in the method
- ACE_Countdown_Time countdown (&wait_time);
- return this->handle_events_i (&wait_time);
-}
-
-int
-ACE_POSIX_SIG_Proactor::handle_events (void)
-{
- return this->handle_events_i (0);
-}
-
-int
-ACE_POSIX_SIG_Proactor::notify_completion (int sig_num)
-{
- // Get this process id.
- pid_t pid = ACE_OS::getpid ();
- if (pid == (pid_t) -1)
- ACE_ERROR_RETURN ((LM_ERROR,
- "Error:%N:%l(%P | %t):%p",
- "<getpid> failed"),
- -1);
-
- // Set the signal information.
- sigval value;
-#if defined (__FreeBSD__)
- value.sigval_int = -1;
-#else
- value.sival_int = -1;
-#endif /* __FreeBSD__ */
-
- // Queue the signal.
- if (sigqueue (pid, sig_num, value) == 0)
- return 0;
-
- if (errno != EAGAIN)
- ACE_ERROR_RETURN ((LM_ERROR,
- "Error:%N:%l:(%P | %t):%p\n",
- "<sigqueue> failed"),
- -1);
- return -1;
-}
-
-ACE_Asynch_Result_Impl *
-ACE_POSIX_SIG_Proactor::create_asynch_timer (ACE_Handler &handler,
- const void *act,
- const ACE_Time_Value &tv,
- ACE_HANDLE event,
- int priority,
- int signal_number)
-{
- int is_member = 0;
-
- // Fix the signal number.
- if (signal_number == -1)
- {
- int si;
- for (si = ACE_SIGRTMAX;
- (is_member == 0) && (si >= ACE_SIGRTMIN);
- si--)
- {
- is_member = sigismember (&this->RT_completion_signals_,
- si);
- if (is_member == -1)
- ACE_ERROR_RETURN ((LM_ERROR,
- "%N:%l:(%P | %t)::%s\n",
- "ACE_POSIX_SIG_Proactor::create_asynch_timer:"
- "sigismember failed"),
- 0);
- }
-
- if (is_member == 0)
- ACE_ERROR_RETURN ((LM_ERROR,
- "Error:%N:%l:(%P | %t)::%s\n",
- "ACE_POSIX_SIG_Proactor::ACE_POSIX_SIG_Proactor:"
- "Signal mask set empty"),
- 0);
- else
- // + 1 to nullify loop increment.
- signal_number = si + 1;
- }
-
- ACE_Asynch_Result_Impl *implementation;
- ACE_NEW_RETURN (implementation,
- ACE_POSIX_Asynch_Timer (handler,
- act,
- tv,
- event,
- priority,
- signal_number),
- 0);
- return implementation;
-}
-
-
-void sig_handler (int sig_num, siginfo_t *, ucontext_t *)
-{
- // Should never be called
- ACE_DEBUG ((LM_DEBUG,
- "%N:%l:(%P | %t)::sig_handler received signal: %d\n",
- sig_num));
- return;
-}
-
-int
-ACE_POSIX_SIG_Proactor::setup_signal_handler (int signal_number) const
-{
- // Set up the specified signal so that signal information will be
- // passed to sigwaitinfo/sigtimedwait. Don't change the default
- // signal handler - having a handler and waiting for the signal can
- // produce undefined behavior.
-
- // But can not use SIG_DFL
- // With SIG_DFL after delivering the first signal
- // SIG_DFL handler resets SA_SIGINFO flags
- // and we will lose all information sig_info
- // At least all SunOS have such behavior
-
- struct sigaction reaction;
- sigemptyset (&reaction.sa_mask); // Nothing else to mask.
- reaction.sa_flags = SA_SIGINFO; // Realtime flag.
- reaction.sa_sigaction = ACE_SIGNAL_C_FUNC(sig_handler); // (SIG_DFL);
- int sigaction_return = ACE_OS::sigaction (signal_number,
- &reaction,
- 0);
- if (sigaction_return == -1)
- ACE_ERROR_RETURN ((LM_ERROR,
- "Error:%p\n",
- "Proactor couldnt do sigaction for the RT SIGNAL"),
- -1);
- return 0;
-}
-
-
-int
-ACE_POSIX_SIG_Proactor::block_signals (void) const
-{
- return ACE_OS::pthread_sigmask (SIG_BLOCK, &this->RT_completion_signals_, 0);
-}
-
-ssize_t
-ACE_POSIX_SIG_Proactor::allocate_aio_slot (ACE_POSIX_Asynch_Result *result)
-{
- size_t i = 0;
-
- //try to find free slot as usual, starting from 0
- for (i = 0; i < this->aiocb_list_max_size_; i++)
- if (result_list_[i] == 0)
- break;
-
- if (i >= this->aiocb_list_max_size_)
- ACE_ERROR_RETURN ((LM_ERROR,
- "%N:%l:(%P | %t)::\n"
- "ACE_POSIX_SIG_Proactor::allocate_aio_slot "
- "internal Proactor error 1\n"),
- -1);
-
- // setup OS notification methods for this aio
- // store index!!, not pointer in signal info
- result->aio_sigevent.sigev_notify = SIGEV_SIGNAL;
- result->aio_sigevent.sigev_signo = result->signal_number ();
-#if defined (__FreeBSD__)
- result->aio_sigevent.sigev_value.sigval_int = ACE_static_cast (int, i);
-#else
- result->aio_sigevent.sigev_value.sival_int = ACE_static_cast (int, i);
-#endif /* __FreeBSD__ */
-
- return ACE_static_cast (ssize_t, i);
-}
-
-int
-ACE_POSIX_SIG_Proactor::handle_events_i (const ACE_Time_Value *timeout)
-{
- int result_sigwait = 0;
- siginfo_t sig_info;
-
- // Wait for the signals.
- if (timeout == 0)
- {
- result_sigwait = ACE_OS::sigwaitinfo (&this->RT_completion_signals_,
- &sig_info);
- }
- else
- {
- result_sigwait = ACE_OS::sigtimedwait (&this->RT_completion_signals_,
- &sig_info,
- timeout);
- if (result_sigwait == -1 && errno == EAGAIN)
- return 0;
- }
-
- // We should not get EINTR since ACE_OS methods restart the system call
- // on EINTR. So -1 here is bad.
- if (result_sigwait == -1)
- return -1;
-
- // Decide what to do. We always check the completion queue since it's an
- // easy, quick check. What is decided here is whether to check for
- // I/O completions and, if so, how completely to scan.
- int flg_aio = 0; // 1 if AIO Completion possible
-
- size_t index = 0; // start index to scan aiocb list
- size_t count = 1; // max number of aiocbs to scan
- int error_status = 0;
- size_t transfer_count = 0;
-
- if (sig_info.si_code == SI_ASYNCIO || this->os_id_ == OS_SUN_56)
- {
- flg_aio = 1; // AIO signal received
- // define index to start
- // nothing will happen if it contains garbage
-#if defined (__FreeBSD__)
- index = ACE_static_cast (size_t, sig_info.si_value.sigval_int);
-#else
- index = ACE_static_cast (size_t, sig_info.si_value.sival_int);
-#endif
- // Assume we have a correctly-functioning implementation, and that
- // there is one I/O to process, and it's correctly specified in the
- // siginfo received. There are, however, some special situations
- // where this isn't true...
- if (os_id_ == OS_SUN_56) // Solaris 6
- {
- // 1. Solaris 6 always loses any RT signal,
- // if it has more SIGQUEMAX=32 pending signals
- // so we should scan the whole aiocb list
- // 2. Moreover,it has one more bad habit
- // to notify aio completion
- // with SI_QUEUE code instead of SI_ASYNCIO, hence the
- // OS_SUN_56 addition to the si_code check, above.
- count = aiocb_list_max_size_;
- }
- }
- else if (sig_info.si_code != SI_QUEUE)
- {
- // Unknown signal code.
- // may some other third-party libraries could send it
- // or message queue could also generate it !
- // So print the message and check our completions
- ACE_ERROR ((LM_DEBUG,
- ACE_LIB_TEXT ("%N:%l:(%P | %t): ")
- ACE_LIB_TEXT ("ACE_POSIX_SIG_Proactor::handle_events: ")
- ACE_LIB_TEXT ("Unexpected signal code (%d) returned ")
- ACE_LIB_TEXT ("from sigwait; expecting %d\n"),
- result_sigwait, sig_info.si_code));
- flg_aio = 1;
- }
-
- int ret_aio = 0;
- int ret_que = 0;
-
- if (flg_aio)
- for (;; ret_aio++)
- {
- ACE_POSIX_Asynch_Result *asynch_result =
- find_completed_aio (error_status,
- transfer_count,
- index,
- count);
-
- if (asynch_result == 0)
- break;
-
- // Call the application code.
- this->application_specific_code (asynch_result,
- transfer_count,
- 0, // No completion key.
- error_status); // Error
- }
-
- // process post_completed results
- ret_que = this->process_result_queue ();
-
- // Uncomment this if you want to test
- // and research the behavior of you system
-#if 0
- ACE_DEBUG ((LM_DEBUG,
- "(%t) NumAIO=%d NumQueue=%d\n",
- ret_aio, ret_que));
-#endif
-
- return ret_aio + ret_que > 0 ? 1 : 0;
-}
-
-#endif /* ACE_HAS_POSIX_REALTIME_SIGNALS */
-
-// *********************************************************************
-
-ACE_POSIX_Asynch_Timer::ACE_POSIX_Asynch_Timer (ACE_Handler &handler,
- const void *act,
- const ACE_Time_Value &tv,
- ACE_HANDLE event,
- int priority,
- int signal_number)
- : ACE_Asynch_Result_Impl (),
- ACE_POSIX_Asynch_Result (handler, act, event, 0, 0, priority, signal_number),
- time_ (tv)
-{
-}
-
-void
-ACE_POSIX_Asynch_Timer::complete (size_t /* bytes_transferred */,
- int /* success */,
- const void * /* completion_key */,
- u_long /* error */)
-{
- this->handler_.handle_time_out (this->time_, this->act ());
-}
-
-
-// *********************************************************************
-
-ACE_POSIX_Wakeup_Completion::ACE_POSIX_Wakeup_Completion (ACE_Handler &handler,
- const void *act,
- ACE_HANDLE event,
- int priority,
- int signal_number)
- : ACE_Asynch_Result_Impl (),
- ACE_POSIX_Asynch_Result (handler, act, event, 0, 0, priority, signal_number)
-{
-}
-
-ACE_POSIX_Wakeup_Completion::~ACE_POSIX_Wakeup_Completion (void)
-{
-}
-
-void
-ACE_POSIX_Wakeup_Completion::complete (size_t /* bytes_transferred */,
- int /* success */,
- const void * /* completion_key */,
- u_long /* error */)
-{
-
- this->handler_.handle_wakeup ();
-}
-
-
-#endif /* ACE_HAS_AIO_CALLS */
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