diff options
Diffstat (limited to 'ace/POSIX_Proactor.cpp')
| -rw-r--r-- | ace/POSIX_Proactor.cpp | 1936 |
1 files changed, 0 insertions, 1936 deletions
diff --git a/ace/POSIX_Proactor.cpp b/ace/POSIX_Proactor.cpp deleted file mode 100644 index a3480aa01d7..00000000000 --- a/ace/POSIX_Proactor.cpp +++ /dev/null @@ -1,1936 +0,0 @@ -/* -*- C++ -*- */ -// $Id$ - -#define ACE_BUILD_DLL -#include "ace/POSIX_Proactor.h" - -#if defined (ACE_HAS_AIO_CALLS) - -#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_Export ACE_POSIX_Wakeup_Completion : public ACE_POSIX_Asynch_Result -{ - // = TITLE - // This is result object is used by the <end_event_loop> of the - // ACE_Proactor interface to wake up all the threads blocking - // for completions. -public: - 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); - // Constructor. - - virtual ~ACE_POSIX_Wakeup_Completion (void); - // Destructor. - - - virtual void complete (u_long bytes_transferred = 0, - int success = 1, - const void *completion_key = 0, - u_long error = 0); - // This method calls the <handler>'s <handle_wakeup> method. -}; - -// ********************************************************************* -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 - // 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_Result_Impl * -ACE_POSIX_Proactor::create_asynch_read_stream_result (ACE_Handler &handler, - ACE_HANDLE handle, - ACE_Message_Block &message_block, - u_long 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_Result_Impl * -ACE_POSIX_Proactor::create_asynch_write_stream_result (ACE_Handler &handler, - ACE_HANDLE handle, - ACE_Message_Block &message_block, - u_long 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_Result_Impl * -ACE_POSIX_Proactor::create_asynch_read_file_result (ACE_Handler &handler, - ACE_HANDLE handle, - ACE_Message_Block &message_block, - u_long 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_Result_Impl * -ACE_POSIX_Proactor::create_asynch_write_file_result (ACE_Handler &handler, - ACE_HANDLE handle, - ACE_Message_Block &message_block, - u_long 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_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_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_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, - u_long 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_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, - u_long bytes_to_write, - u_long offset, - u_long offset_high, - u_long 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, - u_long bytes_transferred, - int success, - const void */* completion_key*/, - u_long error) -{ - ACE_SEH_TRY - { - // Call completion hook - asynch_result->complete (bytes_transferred, - success, - 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 (ssize_t ci = 0; ci < how_many; ci++) - { - ACE_NEW_RETURN (wakeup_completion, - ACE_POSIX_Wakeup_Completion (this->wakeup_handler_), - -1); - - if (wakeup_completion->post_completion (this) == -1) - return -1; - } - - return 0; -} - -class ACE_Export ACE_AIOCB_Notify_Pipe_Manager : public ACE_Handler -{ - // = TITLE - // 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>. - // - // = DESCRIPTION - // <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. -public: - ACE_AIOCB_Notify_Pipe_Manager (ACE_POSIX_AIOCB_Proactor *posix_aiocb_proactor); - // Constructor. You need the posix proactor because you need to call - // <application_specific_code> - - virtual ~ACE_AIOCB_Notify_Pipe_Manager (void); - // Destructor. - - int notify (); - // Send the result pointer through the notification pipe. - - virtual void handle_read_stream (const ACE_Asynch_Read_Stream::Result &result); - // This is the call back method when <Asynch_Read> from the pipe is - // complete. - -private: - ACE_POSIX_AIOCB_Proactor *posix_aiocb_proactor_; - // The implementation proactor class. - - ACE_Message_Block message_block_; - // Message block to get ACE_POSIX_Asynch_Result pointer from the - // pipe. - - ACE_Pipe pipe_; - // Pipe for the communication between Proactor and the - // Asynch_Accept. - - ACE_POSIX_AIOCB_Asynch_Read_Stream read_stream_; - // To do asynch_read on the pipe. - - ACE_AIOCB_Notify_Pipe_Manager (void); - // Default constructor. Shouldnt be called. -}; - -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 (ACE_POSIX_Asynch_Accept_Result *)), - 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) -{ -} - -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 && errno != EWOULDBLOCK) - ACE_ERROR_RETURN ((LM_ERROR, - "(%P %t):%p\n", - "ACE_AIOCB_Notify_Pipe_Manager::notify" - "Error:Writing on to notify pipe failed"), - -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 (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 | %t):%p\n", - "ACE_AIOCB_Notify_Pipe_Manager::handle_read_stream:" - "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 (); - - ACE_NEW (aiocb_list_, - aiocb *[aiocb_list_max_size_]); - ACE_NEW (result_list_, - ACE_POSIX_Asynch_Result *[aiocb_list_max_size_]); - - // Initialize the array. - for (size_t ai = 0; ai < this->aiocb_list_max_size_; ai++) - { - aiocb_list_[ai] = 0; - result_list_[ai] = 0; - } - - create_notify_manager (); -} - -// 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 ptype) - : 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) -{ - ACE_UNUSED_ARG (ptype); - - //check for correct value for max_aio_operations - check_max_aio_num (); - - ACE_NEW (aiocb_list_, - aiocb *[aiocb_list_max_size_]); - ACE_NEW (result_list_, - ACE_POSIX_Asynch_Result *[aiocb_list_max_size_]); - - // Initialize the array. - for (size_t ai = 0; ai < this->aiocb_list_max_size_; ai++) - { - aiocb_list_[ai] = 0; - result_list_[ai] = 0; - } - - // @@ 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) -{ - delete_notify_manager (); - - // delete all uncomlpeted operarion - // as nobody will notify client since now - for (size_t ai = 0; ai < aiocb_list_max_size_; ai++) - { - delete result_list_[ai]; - result_list_[ai] = 0; - aiocb_list_[ai] = 0; - } - - delete [] aiocb_list_; - aiocb_list_ = 0; - - delete [] result_list_; - result_list_ = 0; - - clear_result_queue (); -} - -void ACE_POSIX_AIOCB_Proactor::set_notify_handle (ACE_HANDLE h) -{ - notify_pipe_read_handle_ = h; -} - -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_)); - -} - -void -ACE_POSIX_AIOCB_Proactor::create_notify_manager (void) -{ - // Accept Handler for aio_accept. Remember! this issues a Asynch_Read - // on the notify pipe for doing the Asynch_Accept. - - 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 (wait_time.msec ()); -} - -int -ACE_POSIX_AIOCB_Proactor::handle_events (void) -{ - return this->handle_events (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. - 1, // Result : True. - 0, // No completion key. - result->error()); //0, No error. - - ret_val++; - } - - return ret_val; -} - -ACE_Asynch_Read_Stream_Impl * -ACE_POSIX_AIOCB_Proactor::create_asynch_read_stream (void) -{ - ACE_Asynch_Read_Stream_Impl *implementation = 0; - ACE_NEW_RETURN (implementation, - ACE_POSIX_AIOCB_Asynch_Read_Stream (this), - 0); - return implementation; -} - -ACE_Asynch_Write_Stream_Impl * -ACE_POSIX_AIOCB_Proactor::create_asynch_write_stream (void) -{ - ACE_Asynch_Write_Stream_Impl *implementation = 0; - ACE_NEW_RETURN (implementation, - ACE_POSIX_AIOCB_Asynch_Write_Stream (this), - 0); - return implementation; -} - -ACE_Asynch_Read_Dgram_Impl * -ACE_POSIX_AIOCB_Proactor::create_asynch_read_dgram (void) -{ - ACE_Asynch_Read_Dgram_Impl *implementation = 0; - ACE_NEW_RETURN (implementation, - ACE_POSIX_AIOCB_Asynch_Read_Dgram (this), - 0); - return implementation; -} - -ACE_Asynch_Write_Dgram_Impl * -ACE_POSIX_AIOCB_Proactor::create_asynch_write_dgram (void) -{ - ACE_Asynch_Write_Dgram_Impl *implementation = 0; - ACE_NEW_RETURN (implementation, - ACE_POSIX_AIOCB_Asynch_Write_Dgram (this), - 0); - - return implementation; -} - -ACE_Asynch_Read_File_Impl * -ACE_POSIX_AIOCB_Proactor::create_asynch_read_file (void) -{ - ACE_Asynch_Read_File_Impl *implementation = 0; - ACE_NEW_RETURN (implementation, - ACE_POSIX_AIOCB_Asynch_Read_File (this), - 0); - return implementation; -} - -ACE_Asynch_Write_File_Impl * -ACE_POSIX_AIOCB_Proactor::create_asynch_write_file (void) -{ - ACE_Asynch_Write_File_Impl *implementation = 0; - ACE_NEW_RETURN (implementation, - ACE_POSIX_AIOCB_Asynch_Write_File (this), - 0); - return implementation; -} - -ACE_Asynch_Accept_Impl * -ACE_POSIX_AIOCB_Proactor::create_asynch_accept (void) -{ - ACE_Asynch_Accept_Impl *implementation = 0; - ACE_NEW_RETURN (implementation, - ACE_POSIX_Asynch_Accept (this), - 0); - //was ACE_POSIX_AIOCB_Asynch_Accept (this) - - return implementation; -} - -ACE_Asynch_Transmit_File_Impl * -ACE_POSIX_AIOCB_Proactor::create_asynch_transmit_file (void) -{ - ACE_Asynch_Transmit_File_Impl *implementation = 0; - ACE_NEW_RETURN (implementation, - ACE_POSIX_AIOCB_Asynch_Transmit_File (this), - 0); - return implementation; -} - -int -ACE_POSIX_AIOCB_Proactor::handle_events (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)) * 1000; - 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; - int return_status = 0; - - for (;; retval++) - { - ACE_POSIX_Asynch_Result *asynch_result = - find_completed_aio (error_status, - return_status, - index, - count); - - if (asynch_result == 0) - break; - - // Call the application code. - this->application_specific_code (asynch_result, - return_status, // Bytes transferred. - 1, // Success - 0, // No completion key. - error_status); // Error - } - } - - // process post_completed results - retval += this->process_result_queue (); - - return retval > 0 ? 1 : 0; -} - -ACE_POSIX_Asynch_Result * -ACE_POSIX_AIOCB_Proactor::find_completed_aio (int &error_status, - int &return_status, - 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; - - error_status = 0; - return_status= 0; - - if (num_started_aio_ == 0) // save time - return asynch_result; - - - 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; - - // Get the error status of the aio_ operation. - error_status = aio_error (aiocb_list_[index]); - - if (error_status == -1) // <aio_error> itself has failed. - { - ACE_ERROR ((LM_ERROR, - "%N:%l:(%P | %t)::%p\n", - "ACE_POSIX_AIOCB_Proactor::find_completed_aio:" - "<aio_error> has failed\n")); - - break; - - // we should notify user, otherwise : - // memory leak for result and "hanging" user - // what was before skip this operation - - //aiocb_list_[index] = 0; - //result_list_[index] = 0; - //aiocb_list_cur_size_--; - //continue; - } - - // Continue the loop if <aio_> operation is still in progress. - if (error_status != EINPROGRESS) - break; - - } // end for - - if (count == 0) // all processed , nothing found - return asynch_result; - - if (error_status == ECANCELED) - return_status = 0; - else if (error_status == -1) - return_status = 0; - else - return_status = aio_return (aiocb_list_[index]); - - if (return_status == -1) - { - return_status = 0; // zero bytes transferred - - if (error_status == 0) // nonsense - ACE_ERROR ((LM_ERROR, - "%N:%l:(%P | %t)::%p\n", - "ACE_POSIX_AIOCB_Proactor::find_completed_aio:" - "<aio_return> failed\n")); - } - - - 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; -} - -void -ACE_POSIX_AIOCB_Proactor::application_specific_code (ACE_POSIX_Asynch_Result *asynch_result, - u_long bytes_transferred, - int success, - const void *completion_key, - u_long error) -{ - ACE_POSIX_Proactor::application_specific_code (asynch_result, - bytes_transferred, - success, - completion_key, - error); -} - -int -ACE_POSIX_AIOCB_Proactor::register_and_start_aio (ACE_POSIX_Asynch_Result *result, - int op) -{ - ACE_TRACE ("ACE_POSIX_AIOCB_Proactor::register_and_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 0 : - result->aio_lio_opcode = LIO_READ; - break; - - case 1 : - result->aio_lio_opcode = LIO_WRITE; - break; - - default: - ACE_ERROR_RETURN ((LM_ERROR, - "%N:%l:(%P | %t)::\n" - "register_and_start_aio: Invalid operation code\n"), - -1); - } - - if (ret_val != 0) // No free slot - { - errno = EAGAIN; - ACE_ERROR_RETURN ((LM_ERROR, - "%N:%l:(%P | %t)::\n" - "register_and_start_aio: " - "No space to store the <aio>info\n"), - -1); - } - - // Find a free slot and store. - - ret_val = allocate_aio_slot (result); - - if (ret_val < 0) - return -1; - - size_t index = ACE_static_cast (size_t, ret_val); - - result_list_[index] = result; //Store result ptr anyway - aiocb_list_cur_size_++; - - ret_val = start_aio (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_--; - - ACE_ERROR ((LM_ERROR, - "%N:%l:(%P | %t)::%p\n", - "register_and_start_aio: Invalid request to start <aio>\n")); - return -1; -} - -int -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 (int, i); -} - -// start_aio 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 (ACE_POSIX_Asynch_Result *result) -{ - ACE_TRACE ("ACE_POSIX_AIOCB_Proactor::start_aio"); - - int ret_val; - const ACE_TCHAR *ptype; - - // Start IO - - switch (result->aio_lio_opcode ) - { - case LIO_READ : - ptype = "read "; - ret_val = aio_read (result); - break; - case LIO_WRITE : - ptype = "write"; - ret_val = aio_write (result); - break; - default: - ptype = "?????"; - ret_val = -1; - break; - } - - if (ret_val == 0) - num_started_aio_ ++; - else // if (ret_val == -1) - { - if (errno == EAGAIN) //Ok, it will be deferred AIO - ret_val = 1; - else - ACE_ERROR ((LM_ERROR, - "%N:%l:(%P | %t)::start_aio: aio_%s %p\n", - ptype, - "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 (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 < aiocb_list_max_size_; ai++) - { - if (result_list_[ai] == 0) //skip empty slot - continue; - - if (result_list_[ai]->aio_fildes != handle) //skip not our slot - continue; - - num_total++; - - ACE_POSIX_Asynch_Result *asynch_result = result_list_[ai]; - - if (aiocb_list_ [ai] == 0) //deferred aio - { - num_cancelled ++; - num_deferred_aiocb_ --; - - aiocb_list_[ai] = 0; - result_list_[ai] = 0; - 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 new method is called from cancel_aio - // to cancel concrete running 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 if (rc == AIO_NOTCANCELED) - return 2; - - ACE_ERROR_RETURN ((LM_ERROR, - "%N:%l:(%P | %t)::%p\n", - "cancel_aiocb:" - "Unexpected result from <aio_cancel>"), - -1); - -} - - -// ********************************************************************* - -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. - if (sigemptyset (&this->RT_completion_signals_) == -1) - ACE_ERROR ((LM_ERROR, - "Error:%p\n", - "Couldn't init the RT completion signal set")); - - // Add the signal number to the signal set. - if (sigaddset (&this->RT_completion_signals_, ACE_SIGRTMIN) == -1) - ACE_ERROR ((LM_ERROR, - "Error:%p\n", - "Couldnt init the RT completion signal set")); - this->mask_signals (&this->RT_completion_signals_); - // Set up the signal action for SIGRTMIN. - this->setup_signal_handler (ACE_SIGRTMIN); - - // we do not have to create notify manager - 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->mask_signals (&this->RT_completion_signals_); - - // we do not have to create notify manager - return; -} - -ACE_POSIX_SIG_Proactor::~ACE_POSIX_SIG_Proactor (void) -{ - // @@ 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 (wait_time.msec ()); -} - -int -ACE_POSIX_SIG_Proactor::handle_events (void) -{ - return this->handle_events (ACE_INFINITE); -} - -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__ */ - - // Solaris 8 can "forget" to delivery - // two or more signals queued immediately. - // Just comment the following "if" statement - // and try this->post_completion(2) - - if (os_id_ == OS_SUN_58 && result_queue_.size() > 1) - return 0; - - // 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::mask_signals (const sigset_t *signals) const -{ - if (ACE_OS::pthread_sigmask (SIG_BLOCK, signals, 0) != 0) - ACE_ERROR_RETURN ((LM_ERROR, - "Error:(%P | %t):%p\n", - "pthread_sigmask failed"), - -1); - return 0; -} - -int -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); - - int retval = ACE_static_cast (int, i); - - // 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 = retval; -#else - result->aio_sigevent.sigev_value.sival_int = retval; -#endif /* __FreeBSD__ */ - - return retval; -} - -int -ACE_POSIX_SIG_Proactor::handle_events (unsigned long milli_seconds) -{ - int result_sigwait = 0; - siginfo_t sig_info; - - // Mask all the signals. - if (this->mask_signals (&this->RT_completion_signals_) != 0) - return -1; - - // Wait for the signals. - if (milli_seconds == ACE_INFINITE) - { - result_sigwait = sigwaitinfo (&this->RT_completion_signals_, - &sig_info); - } - else - { - // Wait for <milli_seconds> amount of time. - timespec timeout; - timeout.tv_sec = milli_seconds / 1000; - timeout.tv_nsec = (milli_seconds - (timeout.tv_sec * 1000)) * 1000; - result_sigwait = sigtimedwait (&this->RT_completion_signals_, - &sig_info, - &timeout); - } - - size_t index = 0; // start index to scan aiocb list - size_t count = aiocb_list_max_size_; // max number to iterate - int error_status = 0; - int return_status = 0; - int flg_aio = 0; // 1 if AIO Completion possible - int flg_que = 0; // 1 if SIGQUEUE possible - - // 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 - - // Check for errors - // but let continue work in case of errors - // we should check "post_completed" queue - if (result_sigwait == -1) - { - if (errno != EAGAIN && // timeout - errno != EINTR ) // interrupted system call - ACE_ERROR ((LM_ERROR, - "%N:%l:(%P | %t)::%p\n", - "ACE_POSIX_SIG_Proactor::handle_events:" - "sigtimedwait/sigwaitinfo failed" - )); - } - else if (sig_info.si_signo != result_sigwait) - { - // No errors, RT compleion signal is received. - // Is the signo returned consistent with the sig info? - ACE_ERROR ((LM_ERROR, - "Error:%N:%l:(%P | %t):" - "ACE_POSIX_SIG_Proactor::handle_events:" - "Inconsistent signal number (%d) in the signal info block", - sig_info.si_signo - )); - } - else if (sig_info.si_code == SI_ASYNCIO) - flg_aio = 1; // AIO signal received - else if (sig_info.si_code == SI_QUEUE) - flg_que = 1; // SIGQUEUE received - else - { - // 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, - "%N:%l:(%P | %t):" - "ACE_POSIX_SIG_Proactor::handle_events:\n" - "Unexpected signal code (%d) returned on completion querying\n", - sig_info.si_code)); - } - - // extra actions for different systems - if (os_id_ == OS_SUN_58) // Solaris 8 - { - // Solaris 8 never loses any AIO completion It can store more - // than 40000 notifications! So don't waste time to scan all - // aiocb list We know exactly what finished in case SI_ASYNCHIO - - // But we can easy have lost SI_QUEUE - - if (flg_aio) // AIO - correct behavior - count = 1; - flg_que=1; // not to miss "post_completed" results - } - else 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. - - // this is reliable solution - flg_aio =1; // always find_completed_aio - flg_que =1; // always scan queue - count = aiocb_list_max_size_; - } - else // insert here specific for other systems - { - // this is reliable solution - flg_aio =1; // always find_completed_aio - flg_que =1; // always scan queue - count = aiocb_list_max_size_; - } - - // At this point we have - // if (flg_aio) - // scan aiocb list starting with "index" slot - // no more "count" times - // till we have no more AIO completed - // if (flg_que) - // check "post_completed" queue - - 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, - return_status, - index, - count); - - if (asynch_result == 0) - break; - - // Call the application code. - this->application_specific_code (asynch_result, - return_status, // Bytes transferred. - 1, // Success - 0, // No completion key. - error_status); // Error - } - - // process post_completed results - if (flg_que) - ret_que = this->process_result_queue (); - - // Uncomment this if you want to test - // and research the behavior of you system - // ACE_DEBUG ((LM_DEBUG, - // "(%t) NumAIO=%d NumQueue=%d\n", - // ret_aio, ret_que)); - - return ret_aio + ret_que > 0 ? 1 : 0; -} - -// ********************************************************************* - -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 (u_long /* 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 (u_long /* bytes_transferred */, - int /* success */, - const void * /* completion_key */, - u_long /* error */) -{ - - this->handler_.handle_wakeup (); -} - -#if defined (ACE_HAS_EXPLICIT_TEMPLATE_INSTANTIATION) - -template class ACE_Unbounded_Queue<ACE_POSIX_Asynch_Result *>; -template class ACE_Node<ACE_POSIX_Asynch_Result *>; -template class ACE_Unbounded_Queue_Iterator<ACE_POSIX_Asynch_Result *>; - -#elif defined (ACE_HAS_TEMPLATE_INSTANTIATION_PRAGMA) - -#pragma instantiate ACE_Unbounded_Queue<ACE_POSIX_Asynch_Result *> -#pragma instantiate ACE_Node<ACE_POSIX_Asynch_Result *> -#pragma instantiate ACE_Unbounded_Queue_Iterator<ACE_POSIX_Asynch_Result *> - -#endif /* ACE_HAS_EXPLICIT_TEMPLATE_INSTANTIATION */ - -#endif /* ACE_HAS_AIO_CALLS */ |