ACE/tests/Stack_Trace_Test.cpp

   1 // ============================================================================
   2 //
   3 // = LIBRARY
   4 //    tests
   5 //
   6 // = DESCRIPTION
   7 //    This program exercises the ACE_Stack_Trace class.
   8 //
   9 // = AUTHOR
  10 //    Chris Cleeland <cleeland @ ociweb . com>
  11 //
  12 // ============================================================================
  13
  14 #include "ace/Stack_Trace.h"
  15 #include "ace/OS_NS_string.h"
  16 #include "test_config.h"
  17
  18
  19 /*
  20  * Ultra-basic test of stack trace.
  21  *
  22  * Other things to test:
  23  * - throwing exceptions that contain the stack trace, and catching
  24  * - capturing multiple traces
  25  * - capture traces with different numbers of frames
  26  * - capture traces with different numbers of skipped frames
  27  */
  28
  29
  30 struct SomeException
  31 {
  32   static const ssize_t SKIP = 1; //@TODO: #ifdef this for MACOSX which needs 2
  33   SomeException () : where_(SKIP), explanation_ ("") { }
  34   SomeException (const char *explanation)
  35     : where_(SKIP), explanation_(explanation) { }
  36   ACE_Stack_Trace where_;
  37   const char *explanation_;
  38 };
  39
  40 void
  41 func ()
  42 {
  43   throw SomeException();
  44 }
  45
  46 int
  47 run_main (int, ACE_TCHAR *[])
  48 {
  49   ACE_START_TEST (ACE_TEXT ("Stack_Trace_Test"));
  50
  51   ACE_Stack_Trace t1;
  52   ACE_DEBUG ((LM_DEBUG, "t1 trace is %C\n", t1.c_str()));
  53
  54   ACE_Stack_Trace t2(t1);
  55   ACE_DEBUG ((LM_DEBUG, "t2 (copied) trace is %C\n",
  56         (ACE_OS::strcmp (t1.c_str(), t2.c_str()) == 0) ? "same" : "different"));
  57
  58   ACE_Stack_Trace t3;
  59   ACE_DEBUG ((LM_DEBUG, "t3 trace before assignment is %C\n",
  60         (ACE_OS::strcmp (t1.c_str(), t3.c_str()) == 0) ? "same" : "different"));
  61   t3 = t1;
  62   ACE_DEBUG ((LM_DEBUG, "t3 trace after assignment is %C\n",
  63         (ACE_OS::strcmp (t1.c_str(), t3.c_str()) == 0) ? "same" : "different"));
  64
  65   try {
  66     func();
  67   }
  68   catch (SomeException& e) {
  69     ACE_DEBUG ((LM_DEBUG,
  70     "SomeException caught at\n%?\n; thrown at\n%C",
  71     e.where_.c_str()));
  72   }
  73
  74   ACE_Stack_Trace one_frame_only(0, 1);
  75   ACE_DEBUG ((LM_DEBUG,
  76               "stack trace of only one frame:\n%C",
  77               one_frame_only.c_str()));
  78
  79   ACE_DEBUG ((LM_DEBUG, "getting ready to end the test at %?\n"));
  80
  81   ACE_END_TEST;
  82   return 0;
  83 }