blob: c48dda7574a34da49fa91cb1a243c8bcd1fa0d03 (
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
|
/* -*- C++ -*- */
// $Id$
// ============================================================================
// = FILENAME
// Process_Strategy_Test.h
//
// = DESCRIPTION
// This file contains the definition of Counting_Service and Options.
// Some compilers need it in a .h file for template instantiation
// (such as AIX C Set ++)
//
// = AUTHOR
// Doug Schmidt and Kevin Boyle <kboyle@sanwafp.com>
//
// ============================================================================
#ifndef PROCESS_STRATEGY_TEST_H
#define PROCESS_STRATEGY_TEST_H
#include "ace/Event_Handler.h"
#include "ace/Svc_Handler.h"
class ACE_Thread_Manager;
typedef ACE_Svc_Handler <ACE_SOCK_STREAM, ACE_NULL_SYNCH> SVC_HANDLER;
class Counting_Service : public SVC_HANDLER
// = TITLE
// Reads and increments the count in a shared file.
//
// = DESCRIPTION
// Objects of this class execute in a separate process as a
// result of the <ACE_Strategy_Acceptor> and
// <ACE_Process_Strategy>.
{
public:
Counting_Service (ACE_Thread_Manager * = 0);
// Constructor.
virtual int open (void *v);
// Hook that is used to initialize the service (called by the
// <ACE_Strategy_Acceptor::handle_input> Template Method).
protected:
// = Methods invoked via "pointer to method" table entry.
virtual int svc (void);
// Handle the THREAD case.
// = Operations corresponding to requests from the client.
int read (void);
// Execute the read operation on the file.
int inc (void);
// Execute the increment operation on the file.
// = Hooks called by <Reactor> and <Strategy_Acceptor>.
virtual int handle_input (ACE_HANDLE p = ACE_INVALID_HANDLE);
// Hook called by the <Reactor> when data arrives from the client.
};
class Options : public ACE_Event_Handler
// = TITLE
// Maintains the options for this program.
{
public:
Options (void);
// Constructor.
int parse_args (int argc, char *argv[]);
enum Concurrency_Type
{
PROCESS,
REACTIVE,
THREAD
};
// = Get/set concurrency type.
Concurrency_Type concurrency_type (void);
void concurrency_type (Concurrency_Type);
ACE_File_Lock &file_lock (void);
// Returns the file lock.
const char *filename (void);
// Returns the filename.
ACE_Concurrency_Strategy <Counting_Service> *concurrency_strategy (void);
// Returns the concurrency strategy.
virtual int handle_signal (int, siginfo_t *, ucontext_t *);
// Catch the SIGCHLD signal and reap the exiting child processes.
private:
Concurrency_Type concurrency_type_;
// Concurrency strategy that we're running.
ACE_File_Lock file_lock_;
// Lock for the counting file.
ACE_Concurrency_Strategy<Counting_Service> *concurrency_strategy_;
// Activation strategy that either forks a new process or spawns a
// new thread for each client connection.
const char *filename_;
// Name of the counting file.
};
#endif /* PROCESS_STRATEGY_TEST_H */
|
