summaryrefslogtreecommitdiffstats
path: root/testsuites/psxtests/psxsignal02/init.c
blob: 1f9afc9fca18b1e57071d2bcc35c50a4631b4d8e (plain) (blame)
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
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
/*
 *  COPYRIGHT (c) 1989-2012.
 *  On-Line Applications Research Corporation (OAR).
 *
 *  The license and distribution terms for this file may be
 *  found in the file LICENSE in this distribution or at
 *  http://www.rtems.org/license/LICENSE.
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include <pmacros.h>
#include <signal.h>
#include <errno.h>
#include <pthread.h>
#include <sched.h>

const char rtems_test_name[] = "PSXSIGNAL 2";

/* forward declarations to avoid warnings */
void *POSIX_Init(void *argument);
void *Test_Thread(void *arg);
void Signal_handler(int signo);
void Install_Signal_Handler(const char *task_name);

volatile bool      Signal_occurred;
volatile pthread_t Signal_thread;

void Signal_handler(
  int signo
)
{
  Signal_occurred = true;
  Signal_thread   = pthread_self();
}

void Install_Signal_Handler(
  const char *task_name
)
{
  int               sc;
  sigset_t          mask;

  sc = sigemptyset( &mask );
  rtems_test_assert( !sc );

  sc = sigaddset( &mask, SIGUSR1 );
  rtems_test_assert( !sc );

  printf( "%s - Unblock SIGUSR1\n", task_name );
  sc = pthread_sigmask( SIG_UNBLOCK, &mask, NULL );
  rtems_test_assert( !sc );
}

/*

Tasks and actions, created in this order, all interested in SIGUSR1
  - 20     - interested, suspend?
  - 18     - interested, suspend?
  - 16     - interested, spins
  - 14     - interested, spins
  - 12     - interested, sleeps
  - 10     - interested, suspends
  - 8      - interested, sleeps

Order is critical because the algorithm works by thread index
*/

typedef enum {
  SUSPEND,
  SPIN,
  SLEEP
} Action_t;

const char *Actions[] = {
  "Suspends self",
  "Spins",
  "Sleeps"
};


typedef struct {
  int         priority;
  Action_t    action;
  const char *name;
} Test_t;

Test_t Threads[] = {
  {  8, SUSPEND,  "P8"  },  /* base priority */
  {  7, SUSPEND,  "P7"  },  /* lower priority -- no change */
  { 12, SUSPEND,  "P12" },  /* higher priority, blocked */
  { 12, SUSPEND,  "P12" },  /* equal priority, blocked */
  { 12, SLEEP,    "P12" },  /* equal priority, interruptible */
  { 12, SLEEP,    "P12" },  /* equal priority, interruptible */
  { 12, SPIN,     "P12" },  /* equal priority, ready */
  { 12, SPIN,     "P12" },  /* equal priority, ready -- no change */
  { -1, 0,        ""    },
};

void *Test_Thread(void *arg)
{
  Test_t *test = (Test_t *)arg;

  Install_Signal_Handler( test->name );

  printf( "%s - %s\n", test->name, Actions[test->action] );
  switch ( test->action ) {
    case SUSPEND:
      (void) rtems_task_suspend( RTEMS_SELF );
      break;
    case SPIN:
      while (1) ;
      break;
    case SLEEP:
      sleep( 30 );
      break;
  }

  printf( "%s - exiting\n", test->name );
  return NULL;

}

void *POSIX_Init(
  void *argument
)
{
  int                 i;
  int                 sc;
  pthread_t           id;
  pthread_attr_t      attr;
  struct sched_param  param;
  Test_t             *test;
  struct sigaction    act;
  struct timespec     delay_request;

  TEST_BEGIN();

  Signal_occurred = false;

  act.sa_handler = Signal_handler;
  act.sa_flags   = 0;
  sigaction( SIGUSR1, &act, NULL );

  puts( "Init - Raise my priority" );
  sc = pthread_attr_init( &attr );
  rtems_test_assert( !sc );

  param.sched_priority = 30;
  sc = pthread_setschedparam( pthread_self(), SCHED_RR, &param );
  rtems_test_assert( !sc );

  for ( i=0, test=Threads ; test->priority != -1 ; i++, test++ ) {
    printf( "Init - Create thread %d, priority=%d\n", i, test->priority );
    sc = pthread_attr_init( &attr );
    rtems_test_assert( !sc );

    sc = pthread_attr_setinheritsched( &attr, PTHREAD_EXPLICIT_SCHED );
    rtems_test_assert( !sc );

    sc = pthread_attr_setschedpolicy( &attr, SCHED_RR );
    rtems_test_assert( !sc );

    param.sched_priority = test->priority;
    sc = pthread_attr_setschedparam( &attr, &param );
    rtems_test_assert( !sc );

    sc = pthread_create( &id, &attr, Test_Thread, test );
    rtems_test_assert( !sc );

    puts( "Init - sleep - let thread settle - OK" );
    delay_request.tv_sec = 0;
    delay_request.tv_nsec = 50000000;
    sc = nanosleep( &delay_request, NULL );
    rtems_test_assert( !sc );
  }

  puts( "Init - sending SIGUSR1" );
  sc =  kill( getpid(), SIGUSR1 );
  rtems_test_assert( !sc );

  /* we are just scheduling the signal, not delivering it */
  rtems_test_assert( Signal_occurred == false );

  TEST_END();
  rtems_test_exit(0);

  return NULL; /* just so the compiler thinks we returned something */
}

/* configuration information */

#define CONFIGURE_APPLICATION_NEEDS_SIMPLE_CONSOLE_DRIVER
#define CONFIGURE_APPLICATION_NEEDS_CLOCK_DRIVER

#define CONFIGURE_MICROSECONDS_PER_TICK        1000
#define CONFIGURE_INITIAL_EXTENSIONS RTEMS_TEST_INITIAL_EXTENSION

#define CONFIGURE_MAXIMUM_POSIX_THREADS        9

#define CONFIGURE_POSIX_INIT_THREAD_TABLE

#define CONFIGURE_INIT
#include <rtems/confdefs.h>