ACE/tests/Process_Manual_Event_Test.cpp

   1
   2 //=============================================================================
   3 /**
   4  *  @file    Process_Manual_Event_Test.cpp
   5  *
   6  *  This test verifies the functionality of the <ACE_Manual_Event>
   7  *  process-shared implementation.
   8  *
   9  *  @author Martin Corino <mcorino@remedy.nl>
  10  */
  11 //=============================================================================
  12
  13 #include "test_config.h"
  14 #include "ace/Process.h"
  15 #include "ace/Manual_Event.h"
  16 #include "ace/Time_Value.h"
  17 #include "ace/Get_Opt.h"
  18 #include "ace/ACE.h"
  19 #include "ace/OS_NS_stdio.h"
  20 #include "ace/OS_NS_string.h"
  21 #include "ace/OS_NS_sys_time.h"
  22 #include "ace/OS_NS_unistd.h"
  23 #include "ace/os_include/os_dirent.h"
  24
  25 #if (!defined (ACE_LACKS_FORK) || defined (ACE_WIN32)) && \
  26   (defined (ACE_WIN32) || \
  27    (defined (ACE_HAS_PTHREADS) && defined (_POSIX_THREAD_PROCESS_SHARED) && \
  28       !defined (ACE_LACKS_MUTEXATTR_PSHARED) && !defined (ACE_LACKS_CONDATTR_PSHARED)) || \
  29    defined (ACE_USES_FIFO_SEM) || \
  30    (defined (ACE_HAS_POSIX_SEM) && defined (ACE_HAS_POSIX_SEM_TIMEOUT) && !defined (ACE_LACKS_NAMED_POSIX_SEM)))
  31 static int iterations = 10;
  32 static int child_process = 0;
  33 static const ACE_TCHAR *event_ping_name = ACE_TEXT ("ACE_Ping_Event");
  34 static const ACE_TCHAR *event_pong_name = ACE_TEXT ("ACE_Pong_Event");
  35
  36 // Explain usage and exit.
  37 static void
  38 print_usage_and_die ()
  39 {
  40   ACE_DEBUG ((LM_DEBUG,
  41               ACE_TEXT ("usage: %n [-i #iterations] [-c (child process)]\n")));
  42   ACE_OS::exit (1);
  43 }
  44
  45 // Parse the command-line arguments and set options.
  46 static void
  47 parse_args (int argc, ACE_TCHAR *argv[])
  48 {
  49   ACE_Get_Opt get_opt (argc, argv, ACE_TEXT ("i:c"));
  50
  51   int c;
  52
  53   while ((c = get_opt ()) != -1)
  54     switch (c)
  55       {
  56       case 'i':
  57         iterations = ACE_OS::atoi (get_opt.opt_arg ());
  58         break;
  59       case 'c':
  60         child_process = 1;
  61         break;
  62       default:
  63         print_usage_and_die ();
  64         break;
  65       }
  66 }
  67
  68 static void
  69 acquire_release ()
  70 {
  71   ACE_Manual_Event event_ping (0, USYNC_PROCESS, event_ping_name);
  72   ACE_Manual_Event event_pong (0, USYNC_PROCESS, event_pong_name);
  73
  74   // Make sure the constructor succeeded
  75   ACE_TEST_ASSERT (ACE_LOG_MSG->op_status () == 0);
  76
  77   ACE_DEBUG ((LM_DEBUG,
  78               ACE_TEXT ("(%P) Begin ping-pong\n")));
  79
  80   int i;
  81   if (child_process)
  82     {
  83       for (i = 0; i < iterations; ++i)
  84         {
  85           event_ping.signal ();
  86
  87           if (event_pong.wait ())
  88             ACE_ERROR ((LM_ERROR,
  89                         ACE_TEXT ("(%P) %p\n"),
  90                         ACE_TEXT ("Failed acquiring pong")));
  91           else
  92             {
  93               event_pong.reset ();
  94               ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("(%P) Pong\n")));
  95             }
  96         }
  97
  98       ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("(%P) Testing timeouts\n")));
  99
 100       // test timed wait
 101       ACE_Time_Value wait = ACE_OS::gettimeofday ();
 102       wait.sec (wait.sec () + 3); // timeout in 3 secs
 103
 104       if (event_pong.wait (&wait))
 105         {
 106           if (errno != ETIME)
 107             ACE_ERROR ((LM_ERROR,
 108                         ACE_TEXT ("(%P) %p, but expected ETIME\n"),
 109                         ACE_TEXT ("event_pong.wait()")));
 110         }
 111       else
 112         ACE_ERROR ((LM_ERROR,
 113                     ACE_TEXT ("(%P) Acquired pong without release()\n")));
 114
 115       event_ping.signal ();   // release waiting parent before timeout
 116     }
 117   else
 118     {
 119       for (i = 0; i < iterations; ++i)
 120         {
 121           if (event_ping.wait ())
 122             ACE_ERROR ((LM_ERROR,
 123                         ACE_TEXT ("(%P) %p\n"),
 124                         ACE_TEXT ("Failed acquiring ping")));
 125           else
 126             {
 127               event_ping.reset ();
 128               ACE_DEBUG ((LM_DEBUG,
 129                           ACE_TEXT ("(%P) Ping\n")));
 130             }
 131
 132           event_pong.signal ();
 133         }
 134
 135       ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("(%P) Testing timeouts\n")));
 136
 137       // test timed wait
 138       ACE_Time_Value wait = ACE_OS::gettimeofday ();
 139       wait.sec (wait.sec () + 10); // timeout in 10 secs
 140
 141       if (event_ping.wait (&wait))
 142         {
 143           if (errno != ETIME)
 144             ACE_ERROR ((LM_ERROR,
 145                         ACE_TEXT ("(%P) %p but should be ETIME\n"),
 146                         ACE_TEXT ("Acquire pong")));
 147
 148           ACE_ERROR ((LM_ERROR, ACE_TEXT ("(%P) Acquire pong timed out\n")));
 149         }
 150     }
 151 }
 152 #endif /* ! ACE_LACKS_FORK */
 153
 154 int
 155 run_main (int argc, ACE_TCHAR *argv[])
 156 {
 157 #if defined (ACE_LACKS_FORK) && !defined (ACE_WIN32)
 158   ACE_UNUSED_ARG (argc);
 159   ACE_UNUSED_ARG (argv);
 160
 161   ACE_START_TEST (ACE_TEXT ("Process_Manual_Event_Test"));
 162   ACE_ERROR ((LM_INFO,
 163               ACE_TEXT ("fork is not supported on this platform\n")));
 164   ACE_END_TEST;
 165 #elif defined (ACE_WIN32) || \
 166        (defined (ACE_HAS_PTHREADS) && defined (_POSIX_THREAD_PROCESS_SHARED) && \
 167           !defined (ACE_LACKS_MUTEXATTR_PSHARED) && !defined (ACE_LACKS_CONDATTR_PSHARED)) || \
 168        defined (ACE_USES_FIFO_SEM) || \
 169        (defined (ACE_HAS_POSIX_SEM) && defined (ACE_HAS_POSIX_SEM_TIMEOUT) && !defined (ACE_LACKS_NAMED_POSIX_SEM))
 170
 171   parse_args (argc, argv);
 172
 173   // Child process code.
 174   if (child_process)
 175     {
 176       ACE_START_TEST (ACE_TEXT ("Process_Manual_Event_Test-child"));
 177       ACE_OS::sleep (2);
 178       acquire_release ();
 179       ACE_END_LOG;
 180     }
 181   else
 182     {
 183       ACE_START_TEST (ACE_TEXT ("Process_Manual_Event_Test"));
 184
 185       // The parent cleans up any remnant of past runs of this test.
 186       // See Bugzilla #2662 for further info.
 187
 188       ACE_TCHAR const * argv_0 = argc > 0 ? argv[0] : ACE_TEXT ("Process_Manual_Event_Test");
 189
 190 #if defined (ACE_WIN32)
 191       const ACE_TCHAR *cmdline_format = ACE_TEXT("\"%s\" -c -i %d");
 192 #elif !defined (ACE_USES_WCHAR)
 193 const ACE_TCHAR *cmdline_format = argc > 0 ? ACE_TEXT ("%s -c -i %d") : (ACE_TEXT (".") ACE_DIRECTORY_SEPARATOR_STR ACE_TEXT("%s -c -i %d"));
 194 #else
 195 const ACE_TCHAR *cmdline_format = argc > 0 ? ACE_TEXT ("%s -c -i %d") : (ACE_TEXT (".") ACE_DIRECTORY_SEPARATOR_STR ACE_TEXT("%ls -c -i %d"));
 196 #endif
 197
 198       ACE_Process_Options options;
 199       options.command_line (cmdline_format,
 200                             argv_0,
 201                             iterations);
 202       // Spawn a child process that will contend for the
 203       // lock.
 204       ACE_Process child;
 205
 206       ACE_DEBUG ((LM_DEBUG, ACE_TEXT("Spawning <%s> <%s>\n"),
 207                             options.process_name(),
 208                             options.command_line_buf ()));
 209
 210       // Spawn the child process.
 211       pid_t result = child.spawn (options);
 212       if (result != ACE_INVALID_PID)
 213         ACE_DEBUG ((LM_DEBUG,
 214                   ACE_TEXT ("Parent spawned child process with pid = %d.\n"),
 215                   child.getpid ()));
 216       else
 217         ACE_ERROR_RETURN ((LM_ERROR, ACE_TEXT ("%p\n"),
 218                                      ACE_TEXT ("spawn failed")), 1);
 219
 220       // start test
 221       acquire_release ();
 222
 223       ACE_exitcode child_status;
 224       // Wait for the child processes we created to exit.
 225       int wait_result = child.wait (&child_status);
 226       ACE_TEST_ASSERT (wait_result != -1);
 227       if (child_status == 0)
 228         ACE_DEBUG ((LM_DEBUG,
 229                     ACE_TEXT ("Child %d finished ok\n"),
 230                     child.getpid ()));
 231       else
 232         ACE_ERROR ((LM_ERROR,
 233                     ACE_TEXT ("Child %d finished with status %d\n"),
 234                     child.getpid (), child_status));
 235       ACE_END_TEST;
 236     }
 237 #else /* !ACE_LACKS_FORK */
 238   ACE_UNUSED_ARG (argc);
 239   ACE_UNUSED_ARG (argv);
 240
 241   ACE_START_TEST (ACE_TEXT ("Process_Manual_Event_Test"));
 242   ACE_ERROR ((LM_INFO,
 243               ACE_TEXT ("Process shared events are not supported on this platform\n")));
 244   ACE_END_TEST;
 245 #endif /* ! ACE_LACKS_FORK  */
 246
 247   return 0;
 248 }