1 /*  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
2  *
3  *  Data Differential YATL (i.e. libtest)  library
4  *
5  *  Copyright (C) 2012 Data Differential, http://datadifferential.com/
6  *
7  *  Redistribution and use in source and binary forms, with or without
8  *  modification, are permitted provided that the following conditions are
9  *  met:
10  *
11  *      * Redistributions of source code must retain the above copyright
12  *  notice, this list of conditions and the following disclaimer.
13  *
14  *      * Redistributions in binary form must reproduce the above
15  *  copyright notice, this list of conditions and the following disclaimer
16  *  in the documentation and/or other materials provided with the
17  *  distribution.
18  *
19  *      * The names of its contributors may not be used to endorse or
20  *  promote products derived from this software without specific prior
21  *  written permission.
22  *
23  *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
24  *  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
25  *  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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36 
37 #pragma once
38 
39 #include <pthread.h>
40 #include <semaphore.h>
41 #include <signal.h>
42 
43 enum shutdown_t {
44   SHUTDOWN_RUNNING,
45   SHUTDOWN_GRACEFUL,
46   SHUTDOWN_FORCED
47 };
48 
49 namespace libtest {
50 
51 class SignalThread {
52   sigset_t set;
53   sem_t lock;
54   uint64_t magic_memory;
55   volatile shutdown_t __shutdown;
56   pthread_mutex_t shutdown_mutex;
57   pthread_t thread;
58   sigset_t original_set;
59 
60 public:
61 
62   SignalThread();
63   ~SignalThread();
64 
65   void test();
66   void post();
67   bool setup();
68   bool unblock();
69 
wait(int & sig)70   int wait(int& sig)
71   {
72     return sigwait(&set, &sig);
73   }
74 
75   void set_shutdown(shutdown_t arg);
76   bool is_shutdown();
77   shutdown_t get_shutdown();
78 };
79 
80 } // namespace libtest
81