ACE/tests/Sigset_Ops_Test.cpp

   1
   2 //=============================================================================
   3 /**
   4  *  @file    Sigset_Ops_Test.cpp
   5  *
   6  *   This program tests the correctness of following functions.
   7  *   sigfillset(), sigemptyset(), sigaddset(), sigdelset(),
   8  *   sigismember().
   9  *
  10  *  @author Nanbor Wang <nanbor@cs.wustl.edu>
  11  */
  12 //=============================================================================
  13
  14
  15 #include "test_config.h"
  16 #include "ace/OS_NS_signal.h"
  17 #include "ace/OS_NS_errno.h"
  18
  19
  20 void
  21 siglistset (sigset_t x, int *sigset, int can_miss = 0)
  22 {
  23   bool empty = true;
  24   int result = 0;
  25
  26   for (int i = 1; i < ACE_NSIG; i++)
  27     {
  28       result = ACE_OS::sigismember (&x, i);
  29
  30       if (result > 0)
  31         {
  32           ACE_DEBUG ((LM_DEBUG, ACE_TEXT (" %d\n"), i)) ;
  33           empty = false;
  34         }
  35       else if (can_miss)
  36         {
  37           ACE_DEBUG ((LM_DEBUG,
  38             ACE_TEXT ("Be careful... Signal %d is not valid\n"),
  39             i));
  40           result = 1;
  41         }
  42       ACE_TEST_ASSERT ((sigset [i] ? result > 0 : result <= 0)) ;
  43     }
  44
  45   if (empty)
  46     ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("Empty!!\n\n"))) ;
  47   else
  48     ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("\n\n"))) ;
  49 }
  50
  51 int
  52 run_main (int, ACE_TCHAR *[])
  53 {
  54   ACE_START_TEST (ACE_TEXT ("Sigset_Ops_Test"));
  55
  56 #if defined (ACE_LACKS_SIGSET)
  57   ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("%n uses ACE implementation of sigset* () functions.\n\n"))) ;
  58 #else
  59   ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("%n uses platform's native sigset* () functions.\n\n"))) ;
  60 #endif
  61
  62   sigset_t x ;                  // examined sigset
  63   int sigset [ACE_NSIG] ;       // a comparison sigset
  64   int i ;
  65   int status = 0;               // 0 is success, else fail code
  66
  67   // Two test signal numbers.  I choose these low value signals to
  68   // avoid exceeding the ACE_NSIG range.
  69   const int tsig1 = 5 ;
  70   const int tsig2 = 8 ;
  71
  72   // Testing sigfillset
  73   ACE_OS::sigfillset (&x) ;
  74
  75   // fill the comparison set
  76   for (i = 0 ; i < ACE_NSIG ; i++)
  77     sigset [i] = 1 ;
  78
  79   // There's no guarantee that the valid signals are sequential without
  80   // missed spots. For example, Red Hat Enterprise Linux 3 (any version
  81   // with NPTL) does not include signal 32 in sigfillset() since it's
  82   // reserved for kernel/nptl use. So, allow a miss in this check, but
  83   // be prepared to check the log file for misses if signal capability seems
  84   // odd if the test passes.
  85   siglistset (x, sigset, 1) ;
  86
  87   // testing sigemptyset
  88   ACE_OS::sigemptyset (&x) ;
  89
  90   // empty the comparison set
  91   for (i = 0 ; i < ACE_NSIG ; i++)
  92     sigset [i] = 0 ;
  93
  94   siglistset (x, sigset) ;
  95
  96   // add the first signal into set
  97   ACE_OS::sigaddset (&x, tsig1) ;
  98   sigset [tsig1] = 1 ;
  99   siglistset (x, sigset) ;
 100
 101   // add the second signal into set
 102   ACE_OS::sigaddset (&x, tsig2) ;
 103   sigset [tsig2] = 1 ;
 104   siglistset (x, sigset) ;
 105
 106   // then remove it
 107   ACE_OS::sigdelset (&x, tsig1) ;
 108   sigset [tsig1] = 0 ;
 109   siglistset (x, sigset) ;
 110
 111   // remove the second one
 112   ACE_OS::sigdelset (&x, tsig2) ;
 113   sigset [tsig2] = 0 ;
 114   siglistset (x, sigset) ;
 115
 116   // Now testing out of bound signal
 117   if (ACE_OS::sigismember (&x, ACE_NSIG) >= 0)
 118     {
 119       ACE_ERROR ((LM_ERROR, ACE_TEXT ("Platform doesn't check for valid signal number.\n")));
 120       status = 1;
 121     }
 122   else if (ACE_OS::last_error () != EINVAL)
 123     {
 124       ACE_ERROR ((LM_ERROR, ACE_TEXT ("%p.\n"), ACE_TEXT ("Expected status EINVAL; got")));
 125       status = 1;
 126     }
 127
 128   /* Skip this test at this moment
 129   // Test if platform can catch invalid sigset error Currently, I can
 130   // only think of passing a NULL ptr If you know other situations
 131   // that fall into this catagory, please let me know.  Thanks.
 132   ACE_DEBUG ((LM_ERROR, ACE_TEXT ("Now testing invalid sigset.  If your platform gets a \nsegmentation fault, then it doesn't check the error properly.\n"))) ;
 133
 134   ACE_TEST_ASSERT (ACE_OS::sigfillset (0) < 0 && ACE_OS::last_error () == EFAULT) ;
 135   */
 136
 137   ACE_END_TEST;
 138   return status;
 139 }