blob: e880cfe33158191b6e9da0f211fc4075d31dee7e (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
|
/* -*- C++ -*- */
//=============================================================================
/**
* @file POSIX_CB_Proactor.h
*
* $Id$
*
* @author Alexander Libman <alibman@ihug.com.au>
*/
//=============================================================================
#ifndef ACE_POSIX_CB_PROACTOR_H
#define ACE_POSIX_CB_PROACTOR_H
#include "ace/config-all.h"
#if !defined (ACE_LACKS_PRAGMA_ONCE)
# pragma once
#endif /* ACE_LACKS_PRAGMA_ONCE */
#if defined (ACE_HAS_AIO_CALLS) && !defined(__sun) && !defined(__Lynx__)
#include "ace/POSIX_Proactor.h"
/**
* @class ACE_POSIX_CB_Proactor
*
* @brief Implementation of Callback-based Proactor
* };
*/
class ACE_Export ACE_POSIX_CB_Proactor : public ACE_POSIX_AIOCB_Proactor
{
public:
virtual Proactor_Type get_impl_type (void);
/// Destructor.
virtual ~ACE_POSIX_CB_Proactor (void);
/// Constructor defines max number asynchronous operations that can
/// be started at the same time.
ACE_POSIX_CB_Proactor (size_t max_aio_operations = ACE_AIO_DEFAULT_SIZE);
protected:
static void aio_completion_func (sigval_t cb_data);
/**
* Dispatch a single set of events. If <wait_time> elapses before
* any events occur, return 0. Return 1 on success i.e., when a
* completion is dispatched, non-zero (-1) on errors and errno is
* set accordingly.
*/
virtual int handle_events (ACE_Time_Value &wait_time);
/**
* Block indefinitely until at least one event is dispatched.
* Dispatch a single set of events. If <wait_time> elapses before
* any events occur, return 0. Return 1 on success i.e., when a
* completion is dispatched, non-zero (-1) on errors and errno is
* set accordingly.
*/
virtual int handle_events (void);
/// Find free slot to store result and aiocb pointer
virtual ssize_t allocate_aio_slot (ACE_POSIX_Asynch_Result *result);
/// Notify queue of "post_completed" ACE_POSIX_Asynch_Results
/// called from post_completion method
virtual int notify_completion (int sig_num);
/**
* Dispatch a single set of events. If <milli_seconds> elapses
* before any events occur, return 0. Return 1 if a completion is
* dispatched. Return -1 on errors.
*/
int handle_events_i (u_long milli_seconds);
/// semaphore variable to notify
/// used to wait the first AIO start
ACE_SYNCH_SEMAPHORE sema_;
};
#if defined (__ACE_INLINE__)
#include "ace/POSIX_CB_Proactor.i"
#endif /* __ACE_INLINE__ */
#endif /* ACE_HAS_AIO_CALLS && !__sun && !__Lynx__ */
#endif /* ACE_POSIX_CB_PROACTOR_H*/
|
