blob: 8a6ffc63e023fbea12ccaf3a048a7f814b1270c4 (
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
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
|
// -*- C++ -*-
//=============================================================================
/**
* @file CSD_TP_Request.h
*
* @author Tim Bradley <bradley_t@ociweb.com>
*/
//=============================================================================
#ifndef TAO_CSD_TP_REQUEST_H
#define TAO_CSD_TP_REQUEST_H
#include /**/ "ace/pre.h"
#include "tao/CSD_ThreadPool/CSD_TP_Export.h"
#if !defined (ACE_LACKS_PRAGMA_ONCE)
# pragma once
#endif /* ACE_LACKS_PRAGMA_ONCE */
#include "tao/CSD_ThreadPool/CSD_TP_Servant_State.h"
#include "tao/PortableServer/Servant_Base.h"
#include "tao/Intrusive_Ref_Count_Base_T.h"
#include "tao/Intrusive_Ref_Count_Handle_T.h"
TAO_BEGIN_VERSIONED_NAMESPACE_DECL
namespace TAO
{
namespace CSD
{
class TP_Request;
typedef TAO_Intrusive_Ref_Count_Handle<TP_Request> TP_Request_Handle;
class TP_Queue;
/**
* @class TP_Request
*
* @brief Base class for "queue-able" requests.
*
* This class serves as the abstract base class for all types of
* "servant requests" that can be inserted into a TP_Queue
* object.
*/
class TAO_CSD_TP_Export TP_Request
: public TAO_Intrusive_Ref_Count_Base<TAO_SYNCH_MUTEX>
{
public:
/// Virtual Destructor.
virtual ~TP_Request();
/// Prepare the request to be placed into the request queue.
void prepare_for_queue();
/// Invoked to dispatch the request to the servant.
void dispatch();
/// Invoked to cancel the request.
void cancel();
/// Is the target servant ready to accept a request?
bool is_ready() const;
/// Mark the target servant as being busy.
void mark_as_busy();
/// Mark the target servant as being ready (ie, not busy).
void mark_as_ready();
/// This method returns true if this request targets the supplied
/// servant object.
bool is_target(PortableServer::Servant servant);
protected:
/// Constructor.
TP_Request(PortableServer::Servant servant,
TP_Servant_State* servant_state);
/// Accessor for the servant. Does not return a new (ref counted)
/// reference! This is used for chaining.
PortableServer::Servant servant();
/// The subclass knows if it needs to do anything in preparation
/// of being placed into the request queue. The default implementation
/// does nothing, so only subclasses that have something to do
/// need to provide their own implementation.
virtual void prepare_for_queue_i();
/// The subclass knows how to carry out its own way of dispatching
/// the request to the servant.
virtual void dispatch_i() = 0;
/// Ask the subclass to perform its duties to carry out the cancellation.
virtual void cancel_i() = 0;
private:
/// The TP_Queue class is our friend since it needs access to
/// the prev_ and next_ (private) data members.
friend class TP_Queue;
/// The previous TP_Request object (in the queue).
TP_Request* prev_;
/// The next TP_Request object (in the queue).
TP_Request* next_;
/// Reference to the servant object.
PortableServer::ServantBase_var servant_;
/// Reference to the servant "state" object (contains the busy flag).
TP_Servant_State::HandleType servant_state_;
};
}
}
TAO_END_VERSIONED_NAMESPACE_DECL
#if defined (__ACE_INLINE__)
# include "tao/CSD_ThreadPool/CSD_TP_Request.inl"
#endif /* __ACE_INLINE__ */
#include /**/ "ace/post.h"
#endif /* TAO_CSD_TP_REQUEST_H */
|
