ACE
6.1.6
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A manager for asynchronous event demultiplexing. More...
#include <Proactor.h>
Public Types | |
typedef int(* | PROACTOR_EVENT_HOOK )(ACE_Proactor *) |
Public Member Functions | |
ACE_Proactor (ACE_Proactor_Impl *implementation=0, bool delete_implementation=false, ACE_Proactor_Timer_Queue *tq=0) | |
~ACE_Proactor (void) | |
Destruction. | |
int | close (void) |
Close the associated ACE_Proactor_Impl implementation object. | |
int | proactor_run_event_loop (PROACTOR_EVENT_HOOK=0) |
int | proactor_run_event_loop (ACE_Time_Value &tv, PROACTOR_EVENT_HOOK=0) |
int | proactor_end_event_loop (void) |
int | proactor_event_loop_done (void) |
Report if the ACE_Proactor event loop is finished. | |
int | proactor_reset_event_loop (void) |
int | register_handle (ACE_HANDLE handle, const void *completion_key) |
long | schedule_timer (ACE_Handler &handler, const void *act, const ACE_Time_Value &time) |
long | schedule_repeating_timer (ACE_Handler &handler, const void *act, const ACE_Time_Value &interval) |
long | schedule_timer (ACE_Handler &handler, const void *act, const ACE_Time_Value &time, const ACE_Time_Value &interval) |
int | cancel_timer (ACE_Handler &handler, int dont_call_handle_close=1) |
int | cancel_timer (long timer_id, const void **act=0, int dont_call_handle_close=1) |
int | handle_events (ACE_Time_Value &wait_time) |
int | handle_events (void) |
int | wake_up_dispatch_threads (void) |
Add wakeup dispatch threads (reinit). | |
int | close_dispatch_threads (int wait) |
Close all dispatch threads. | |
size_t | number_of_threads (void) const |
Get number of thread used as a parameter to CreatIoCompletionPort. | |
void | number_of_threads (size_t threads) |
Set number of thread used as a parameter to CreatIoCompletionPort. | |
ACE_Proactor_Timer_Queue * | timer_queue (void) const |
Get timer queue. | |
void | timer_queue (ACE_Proactor_Timer_Queue *timer_queue) |
Set timer queue. | |
ACE_HANDLE | get_handle (void) const |
ACE_Proactor_Impl * | implementation (void) const |
Get the implementation class. | |
ACE_Asynch_Read_Stream_Impl * | create_asynch_read_stream (void) |
ACE_Asynch_Write_Stream_Impl * | create_asynch_write_stream (void) |
ACE_Asynch_Read_File_Impl * | create_asynch_read_file (void) |
ACE_Asynch_Write_File_Impl * | create_asynch_write_file (void) |
ACE_Asynch_Accept_Impl * | create_asynch_accept (void) |
Create the correct implementation class for doing Asynch_Accept. | |
ACE_Asynch_Connect_Impl * | create_asynch_connect (void) |
Create the correct implementation class for doing Asynch_Connect. | |
ACE_Asynch_Transmit_File_Impl * | create_asynch_transmit_file (void) |
ACE_Asynch_Read_Dgram_Impl * | create_asynch_read_dgram (void) |
ACE_Asynch_Write_Dgram_Impl * | create_asynch_write_dgram (void) |
ACE_Asynch_Read_Stream_Result_Impl * | create_asynch_read_stream_result (ACE_Handler::Proxy_Ptr &handler_proxy, ACE_HANDLE handle, ACE_Message_Block &message_block, u_long bytes_to_read, const void *act, ACE_HANDLE event=ACE_INVALID_HANDLE, int priority=0, int signal_number=ACE_SIGRTMIN) |
ACE_Asynch_Write_Stream_Result_Impl * | create_asynch_write_stream_result (ACE_Handler::Proxy_Ptr &handler_proxy, ACE_HANDLE handle, ACE_Message_Block &message_block, u_long bytes_to_write, const void *act, ACE_HANDLE event=ACE_INVALID_HANDLE, int priority=0, int signal_number=ACE_SIGRTMIN) |
ACE_Asynch_Read_File_Result_Impl * | create_asynch_read_file_result (ACE_Handler::Proxy_Ptr &handler_proxy, 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=ACE_INVALID_HANDLE, int priority=0, int signal_number=ACE_SIGRTMIN) |
ACE_Asynch_Write_File_Result_Impl * | create_asynch_write_file_result (ACE_Handler::Proxy_Ptr &handler_proxy, 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=ACE_INVALID_HANDLE, int priority=0, int signal_number=ACE_SIGRTMIN) |
ACE_Asynch_Read_Dgram_Result_Impl * | create_asynch_read_dgram_result (ACE_Handler::Proxy_Ptr &handler_proxy, ACE_HANDLE handle, ACE_Message_Block *message_block, size_t bytes_to_read, int flags, int protocol_family, const void *act, ACE_HANDLE event=ACE_INVALID_HANDLE, int priority=0, int signal_number=ACE_SIGRTMIN) |
ACE_Asynch_Write_Dgram_Result_Impl * | create_asynch_write_dgram_result (ACE_Handler::Proxy_Ptr &handler_proxy, ACE_HANDLE handle, ACE_Message_Block *message_block, size_t bytes_to_write, int flags, const void *act, ACE_HANDLE event=ACE_INVALID_HANDLE, int priority=0, int signal_number=ACE_SIGRTMIN) |
ACE_Asynch_Accept_Result_Impl * | create_asynch_accept_result (ACE_Handler::Proxy_Ptr &handler_proxy, ACE_HANDLE listen_handle, ACE_HANDLE accept_handle, ACE_Message_Block &message_block, u_long bytes_to_read, const void *act, ACE_HANDLE event=ACE_INVALID_HANDLE, int priority=0, int signal_number=ACE_SIGRTMIN) |
Create the correct implementation class for ACE_Asynch_Accept::Result. | |
ACE_Asynch_Connect_Result_Impl * | create_asynch_connect_result (ACE_Handler::Proxy_Ptr &handler_proxy, ACE_HANDLE connect_handle, const void *act, ACE_HANDLE event=ACE_INVALID_HANDLE, int priority=0, int signal_number=ACE_SIGRTMIN) |
Create the correct implementation class for ACE_Asynch_Connect::Result. | |
ACE_Asynch_Transmit_File_Result_Impl * | create_asynch_transmit_file_result (ACE_Handler::Proxy_Ptr &handler_proxy, 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=ACE_INVALID_HANDLE, int priority=0, int signal_number=ACE_SIGRTMIN) |
ACE_Asynch_Result_Impl * | create_asynch_timer (ACE_Handler::Proxy_Ptr &handler_proxy, const void *act, const ACE_Time_Value &tv, ACE_HANDLE event=ACE_INVALID_HANDLE, int priority=0, int signal_number=ACE_SIGRTMIN) |
Static Public Member Functions | |
static ACE_Proactor * | instance (size_t threads=0) |
static ACE_Proactor * | instance (ACE_Proactor *proactor, bool delete_proactor=false) |
static void | close_singleton (void) |
Delete the dynamically allocated Singleton. | |
static void | cleanup (void *instance, void *arg) |
static const ACE_TCHAR * | dll_name (void) |
Name of dll in which the singleton instance lives. | |
static const ACE_TCHAR * | name (void) |
Name of component–ACE_Proactor in this case. | |
static int | run_event_loop (void) |
static int | run_event_loop (ACE_Time_Value &tv) |
static int | end_event_loop (void) |
static int | reset_event_loop (void) |
static int | check_reconfiguration (ACE_Proactor *) |
static int | event_loop_done (void) |
Report if the <ACE_Proactor::instance> event loop is finished. |
Protected Member Functions | |
int | proactor_post_wakeup_completions (int how_many) |
void | implementation (ACE_Proactor_Impl *implementation) |
Set the implementation class. |
Static Protected Member Functions | |
static int | post_wakeup_completions (int how_many) |
Protected Attributes | |
ACE_Proactor_Impl * | implementation_ |
bool | delete_implementation_ |
ACE_Proactor_Timer_Handler * | timer_handler_ |
Handles timeout events. | |
ACE_Thread_Manager | thr_mgr_ |
This will manage the thread in the Timer_Handler. | |
ACE_Proactor_Timer_Queue * | timer_queue_ |
Timer Queue. | |
int | delete_timer_queue_ |
Flag on whether to delete the timer queue. | |
sig_atomic_t | end_event_loop_ |
Terminate the proactor event loop. | |
sig_atomic_t | event_loop_thread_count_ |
Number of threads in the event loop. | |
ACE_SYNCH_MUTEX | mutex_ |
Mutex to protect work with lists. |
Static Protected Attributes | |
static ACE_Proactor * | proactor_ = 0 |
Pointer to a process-wide ACE_Proactor. | |
static bool | delete_proactor_ = false |
Must delete the <proactor_> if true. |
Private Member Functions | |
ACE_Proactor (const ACE_Proactor &) | |
Deny access since member-wise won't work... | |
ACE_Proactor & | operator= (const ACE_Proactor &) |
Friends | |
class | ACE_Proactor_Timer_Handler |
A manager for asynchronous event demultiplexing.
See the Proactor pattern description at http://www.cs.wustl.edu/~schmidt/proactor.ps.gz for more details.
typedef int(* ACE_Proactor::PROACTOR_EVENT_HOOK)(ACE_Proactor *) |
You can add a hook to various run_event methods and the hook will be called after handling every proactor event. If this function returns 0, proactor_run_event_loop will check for the return value of handle_events. If it is -1, the the proactor_run_event_loop will return (pre-maturely.)
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ACE_Proactor::ACE_Proactor | ( | ACE_Proactor_Impl * | implementation = 0 , |
bool | delete_implementation = false , |
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ACE_Proactor_Timer_Queue * | tq = 0 |
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Constructor. If implementation is 0, the correct implementation object will be created. delete_implementation flag determines whether the implementation object should be deleted by the Proactor or not. If tq is 0, a new TIMER_QUEUE is created.
ACE_Proactor::~ACE_Proactor | ( | void | ) |
Destruction.
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Deny access since member-wise won't work...
int ACE_Proactor::cancel_timer | ( | ACE_Handler & | handler, |
int | dont_call_handle_close = 1 |
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Cancel all timers associated with this handler. Returns number of timers cancelled.
int ACE_Proactor::cancel_timer | ( | long | timer_id, |
const void ** | act = 0 , |
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int | dont_call_handle_close = 1 |
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Cancel the single <ACE_Handler> that matches the timer_id value (which was returned from the <schedule> method). If act is non-NULL then it will be set to point to the ``magic cookie'' argument passed in when the <Handler> was registered. This makes it possible to free up the memory and avoid memory leaks. Returns 1 if cancellation succeeded and 0 if the timer_id wasn't found.
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The singleton proactor is used by the ACE_Service_Config. Therefore, we must check for the reconfiguration request and handle it after handling an event.
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Cleanup method, used by the ACE_Object_Manager to destroy the singleton.
int ACE_Proactor::close | ( | void | ) |
Close the associated ACE_Proactor_Impl
implementation object.
If
open()
method, the implementation object is also deleted. int ACE_Proactor::close_dispatch_threads | ( | int | wait | ) |
Close all dispatch threads.
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Delete the dynamically allocated Singleton.
ACE_Asynch_Accept_Impl * ACE_Proactor::create_asynch_accept | ( | void | ) |
Create the correct implementation class for doing Asynch_Accept.
ACE_Asynch_Accept_Result_Impl * ACE_Proactor::create_asynch_accept_result | ( | ACE_Handler::Proxy_Ptr & | handler_proxy, |
ACE_HANDLE | listen_handle, | ||
ACE_HANDLE | accept_handle, | ||
ACE_Message_Block & | message_block, | ||
u_long | bytes_to_read, | ||
const void * | act, | ||
ACE_HANDLE | event = ACE_INVALID_HANDLE , |
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int | priority = 0 , |
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int | signal_number = ACE_SIGRTMIN |
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Create the correct implementation class for ACE_Asynch_Accept::Result.
ACE_Asynch_Connect_Impl * ACE_Proactor::create_asynch_connect | ( | void | ) |
Create the correct implementation class for doing Asynch_Connect.
ACE_Asynch_Connect_Result_Impl * ACE_Proactor::create_asynch_connect_result | ( | ACE_Handler::Proxy_Ptr & | handler_proxy, |
ACE_HANDLE | connect_handle, | ||
const void * | act, | ||
ACE_HANDLE | event = ACE_INVALID_HANDLE , |
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int | priority = 0 , |
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int | signal_number = ACE_SIGRTMIN |
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Create the correct implementation class for ACE_Asynch_Connect::Result.
ACE_Asynch_Read_Dgram_Impl * ACE_Proactor::create_asynch_read_dgram | ( | void | ) |
Create the correct implementation class for doing Asynch_Read_Dgram.
ACE_Asynch_Read_Dgram_Result_Impl * ACE_Proactor::create_asynch_read_dgram_result | ( | ACE_Handler::Proxy_Ptr & | handler_proxy, |
ACE_HANDLE | handle, | ||
ACE_Message_Block * | message_block, | ||
size_t | bytes_to_read, | ||
int | flags, | ||
int | protocol_family, | ||
const void * | act, | ||
ACE_HANDLE | event = ACE_INVALID_HANDLE , |
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int | priority = 0 , |
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int | signal_number = ACE_SIGRTMIN |
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Create the correct implementation class for ACE_Asynch_Read_Dgram::Result.
ACE_Asynch_Read_File_Impl * ACE_Proactor::create_asynch_read_file | ( | void | ) |
Create the correct implementation class for doing Asynch_Read_File.
ACE_Asynch_Read_File_Result_Impl * ACE_Proactor::create_asynch_read_file_result | ( | ACE_Handler::Proxy_Ptr & | handler_proxy, |
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 = ACE_INVALID_HANDLE , |
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int | priority = 0 , |
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int | signal_number = ACE_SIGRTMIN |
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Create the correct implementation class for ACE_Asynch_Read_File::Result.
ACE_Asynch_Read_Stream_Impl * ACE_Proactor::create_asynch_read_stream | ( | void | ) |
Create the correct implementation class for doing Asynch_Read_Stream.
ACE_Asynch_Read_Stream_Result_Impl * ACE_Proactor::create_asynch_read_stream_result | ( | ACE_Handler::Proxy_Ptr & | handler_proxy, |
ACE_HANDLE | handle, | ||
ACE_Message_Block & | message_block, | ||
u_long | bytes_to_read, | ||
const void * | act, | ||
ACE_HANDLE | event = ACE_INVALID_HANDLE , |
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int | priority = 0 , |
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int | signal_number = ACE_SIGRTMIN |
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Create the correct implementation class for ACE_Asynch_Read_Stream::Result class.
ACE_Asynch_Result_Impl * ACE_Proactor::create_asynch_timer | ( | ACE_Handler::Proxy_Ptr & | handler_proxy, |
const void * | act, | ||
const ACE_Time_Value & | tv, | ||
ACE_HANDLE | event = ACE_INVALID_HANDLE , |
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int | priority = 0 , |
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int | signal_number = ACE_SIGRTMIN |
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Create a timer result object which can be used with the Timer mechanism of the Proactor. If signal_number is -1, <POSIX_SIG_Proactor> will create a Timer object with a meaningful signal number, choosing the largest signal number from the signal mask of the Proactor.
ACE_Asynch_Transmit_File_Impl * ACE_Proactor::create_asynch_transmit_file | ( | void | ) |
Create the correct implementation class for doing Asynch_Transmit_File.
ACE_Asynch_Transmit_File_Result_Impl * ACE_Proactor::create_asynch_transmit_file_result | ( | ACE_Handler::Proxy_Ptr & | handler_proxy, |
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 = ACE_INVALID_HANDLE , |
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int | priority = 0 , |
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int | signal_number = ACE_SIGRTMIN |
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Create the correct implementation class for ACE_Asynch_Transmit_File::Result.
ACE_Asynch_Write_Dgram_Impl * ACE_Proactor::create_asynch_write_dgram | ( | void | ) |
Create the correct implementation class for doing Asynch_Write_Dgram.
ACE_Asynch_Write_Dgram_Result_Impl * ACE_Proactor::create_asynch_write_dgram_result | ( | ACE_Handler::Proxy_Ptr & | handler_proxy, |
ACE_HANDLE | handle, | ||
ACE_Message_Block * | message_block, | ||
size_t | bytes_to_write, | ||
int | flags, | ||
const void * | act, | ||
ACE_HANDLE | event = ACE_INVALID_HANDLE , |
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int | priority = 0 , |
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int | signal_number = ACE_SIGRTMIN |
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Create the correct implementation class for ACE_Asynch_Write_Dgram::Result.
ACE_Asynch_Write_File_Impl * ACE_Proactor::create_asynch_write_file | ( | void | ) |
Create the correct implementation class for doing Asynch_Write_File.
ACE_Asynch_Write_File_Result_Impl * ACE_Proactor::create_asynch_write_file_result | ( | ACE_Handler::Proxy_Ptr & | handler_proxy, |
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 = ACE_INVALID_HANDLE , |
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int | priority = 0 , |
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int | signal_number = ACE_SIGRTMIN |
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Create the correct implementation class for ACE_Asynch_Write_File::Result.
ACE_Asynch_Write_Stream_Impl * ACE_Proactor::create_asynch_write_stream | ( | void | ) |
Create the correct implementation class for doing Asynch_Write_Stream.
ACE_Asynch_Write_Stream_Result_Impl * ACE_Proactor::create_asynch_write_stream_result | ( | ACE_Handler::Proxy_Ptr & | handler_proxy, |
ACE_HANDLE | handle, | ||
ACE_Message_Block & | message_block, | ||
u_long | bytes_to_write, | ||
const void * | act, | ||
ACE_HANDLE | event = ACE_INVALID_HANDLE , |
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int | priority = 0 , |
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int | signal_number = ACE_SIGRTMIN |
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Create the correct implementation class for ACE_Asynch_Write_Stream::Result.
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Name of dll in which the singleton instance lives.
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Instruct the <ACE_Proactor::instance> to terminate its event loop. This method wakes up all the threads blocked on waiting for completions and end the event loop.
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Report if the <ACE_Proactor::instance> event loop is finished.
ACE_HANDLE ACE_Proactor::get_handle | ( | void | ) | const |
Get the event handle. It is a no-op in POSIX platforms and it returns ACE_INVALID_HANDLE.
int ACE_Proactor::handle_events | ( | ACE_Time_Value & | wait_time | ) |
Dispatch a single set of events, waiting up to a specified time limit if necessary.
wait_time | the time to wait for an event to occur. This is a relative time. On successful return, the time is updated to reflect the amount of time spent waiting for event(s) to occur. |
int ACE_Proactor::handle_events | ( | void | ) |
Block indefinitely until at least one event is dispatched.
ACE_Proactor_Impl * ACE_Proactor::implementation | ( | void | ) | const |
Get the implementation class.
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Set the implementation class.
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Get pointer to a process-wide ACE_Proactor. threads should be part of another method.
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Set pointer to a process-wide ACE_Proactor and return existing pointer.
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Name of component–ACE_Proactor in this case.
size_t ACE_Proactor::number_of_threads | ( | void | ) | const |
Get number of thread used as a parameter to CreatIoCompletionPort.
void ACE_Proactor::number_of_threads | ( | size_t | threads | ) |
Set number of thread used as a parameter to CreatIoCompletionPort.
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Post <how_many> completions to the completion port so that all threads can wake up. This is used in conjunction with the <run_event_loop>.
int ACE_Proactor::proactor_end_event_loop | ( | void | ) |
Instruct the ACE_Proactor to terminate its event loop and notifies the ACE_Proactor so that it can wake up and close down gracefully.
int ACE_Proactor::proactor_event_loop_done | ( | void | ) |
Report if the ACE_Proactor event loop is finished.
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Post <how_many> completions to the completion port so that all threads can wake up. This is used in conjunction with the <proactor_run_event_loop>.
int ACE_Proactor::proactor_reset_event_loop | ( | void | ) |
Resets the <ACE_Proactor::end_event_loop_> static so that the <run_event_loop> method can be restarted.
int ACE_Proactor::proactor_run_event_loop | ( | PROACTOR_EVENT_HOOK | eh = 0 | ) |
Run the event loop until the <ACE_Proactor::handle_events> method returns -1 or the <end_proactor_event_loop> method is invoked.
int ACE_Proactor::proactor_run_event_loop | ( | ACE_Time_Value & | tv, |
PROACTOR_EVENT_HOOK | eh = 0 |
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Run the event loop until the <ACE_Proactor::handle_events> method returns -1, the <end_proactor_event_loop> method is invoked, or the ACE_Time_Value expires, in which case a 0 is returned.
int ACE_Proactor::register_handle | ( | ACE_HANDLE | handle, |
const void * | completion_key | ||
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This method adds the handle to the I/O completion port. This function is a no-op function for Unix systems and returns 0;
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Resets the <ACE_Proactor::end_event_loop_> static so that the <run_event_loop> method can be restarted.
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Run the event loop until the <ACE_Proactor::handle_events> method returns -1 or the <end_event_loop> method is invoked.
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Run the event loop until the <ACE_Proactor::handle_events> method returns -1, the <end_event_loop> method is invoked, or the ACE_Time_Value expires, in which case 0 is returned.
long ACE_Proactor::schedule_repeating_timer | ( | ACE_Handler & | handler, |
const void * | act, | ||
const ACE_Time_Value & | interval | ||
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long ACE_Proactor::schedule_timer | ( | ACE_Handler & | handler, |
const void * | act, | ||
const ACE_Time_Value & | time | ||
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Schedule a handler that will expire after <time>. If it expires then act is passed in as the value to the handler's <handle_timeout> callback method. This method returns a <timer_id>. This <timer_id> can be used to cancel a timer before it expires. The cancellation ensures that <timer_ids> are unique up to values of greater than 2 billion timers. As long as timers don't stay around longer than this there should be no problems with accidentally deleting the wrong timer. Returns -1 on failure (which is guaranteed never to be a valid <timer_id>).
long ACE_Proactor::schedule_timer | ( | ACE_Handler & | handler, |
const void * | act, | ||
const ACE_Time_Value & | time, | ||
const ACE_Time_Value & | interval | ||
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Same as above except interval it is used to reschedule the handler automatically. This combines the above two methods into one. Mostly for backward compatibility.
ACE_Proactor_Timer_Queue * ACE_Proactor::timer_queue | ( | void | ) | const |
Get timer queue.
void ACE_Proactor::timer_queue | ( | ACE_Proactor_Timer_Queue * | timer_queue | ) |
Set timer queue.
int ACE_Proactor::wake_up_dispatch_threads | ( | void | ) |
Add wakeup dispatch threads (reinit).
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Timer handler runs a thread and manages the timers, on behalf of the Proactor.
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Flag used to indicate whether we are responsible for cleaning up the implementation instance.
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Must delete the <proactor_> if true.
Controls whether the Proactor is deleted when we shut down (we can only delete it safely if we created it!)
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Flag on whether to delete the timer queue.
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Terminate the proactor event loop.
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Number of threads in the event loop.
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Delegation/implementation class that all methods will be forwarded to.
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Mutex to protect work with lists.
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Pointer to a process-wide ACE_Proactor.
Process-wide ACE_Proactor.
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This will manage the thread in the Timer_Handler.
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Handles timeout events.
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Timer Queue.