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
|
// $Id: SigAction.cpp 94310 2011-07-09 19:10:06Z schmidt $
#include "ace/OS_NS_unistd.h"
#include "ace/OS_NS_stdlib.h"
#include "ace/Log_Msg.h"
// Listing 1 code/ch11
#include "ace/Signal.h"
// Forward declaration.
static void register_actions ();
int ACE_TMAIN (int, ACE_TCHAR *[])
{
ACE_TRACE ("::main");
::register_actions (); // Register actions to happen.
// This will be raised immediately.
ACE_OS::kill (ACE_OS::getpid(), SIGUSR2);
// This will pend until the first signal is completely
// handled and returns, because we masked it out
// in the registerAction call.
ACE_OS::kill (ACE_OS::getpid (), SIGUSR1);
while (ACE_OS::sleep (100) == -1)
{
if (errno == EINTR)
continue;
else
ACE_OS::exit (1);
}
return 0;
}
// Listing 1
#if defined (ACE_HAS_SIG_C_FUNC)
extern "C" {
#endif
// Listing 3 code/ch11
static void my_sighandler (int signo)
{
ACE_TRACE ("::my_sighandler");
ACE_OS::kill (ACE_OS::getpid (), SIGUSR1);
if (signo == SIGUSR1)
ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("Signal SIGUSR1\n")));
else
ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("Signal SIGUSR2\n")));
ACE_OS::sleep (10);
}
#if defined (ACE_HAS_SIG_C_FUNC)
}
#endif
// Listing 3
// Listing 2 code/ch11
static void register_actions ()
{
ACE_TRACE ("::register_actions");
ACE_Sig_Action sa (reinterpret_cast <ACE_SignalHandler> (my_sighandler));
// Make sure we specify that SIGUSR1 will be masked out
// during the signal handler's execution.
ACE_Sig_Set ss;
ss.sig_add (SIGUSR1);
sa.mask (ss);
// Register the same handler function for these
// two signals.
sa.register_action (SIGUSR1);
sa.register_action (SIGUSR2);
}
// Listing 2
|
