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 /*
  21  * Ultra-basic test of stack trace.
  22  *
  23  * Other things to test:
  24  * - throwing exceptions that contain the stack trace, and catching
  25  * - capturing multiple traces
  26  * - capture traces with different numbers of frames
  27  * - capture traces with different numbers of skipped frames
  28  */
  29
  30
  31 struct SomeException
  32 {
  33   static const ssize_t SKIP = 1; //@TODO: #ifdef this for MACOSX which needs 2
  34   SomeException () : where_(SKIP), explanation_ ("") { }
  35   SomeException (const char *explanation)
  36     : where_(SKIP), explanation_(explanation) { }
  37   ACE_Stack_Trace where_;
  38   const char *explanation_;
  39 };
  40
  41 void
  42 func ()
  43 {
  44   throw SomeException();
  45 }
  46
  47 int
  48 run_main (int, ACE_TCHAR *[])
  49 {
  50   ACE_START_TEST (ACE_TEXT ("Stack_Trace_Test"));
  51
  52   ACE_Stack_Trace t1;
  53   ACE_DEBUG ((LM_DEBUG, "t1 trace is %C\n", t1.c_str()));
  54
  55   ACE_Stack_Trace t2(t1);
  56   ACE_DEBUG ((LM_DEBUG, "t2 (copied) trace is %C\n",
  57         (ACE_OS::strcmp (t1.c_str(), t2.c_str()) == 0) ? "same" : "different"));
  58
  59   ACE_Stack_Trace t3;
  60   ACE_DEBUG ((LM_DEBUG, "t3 trace before assignment is %C\n",
  61         (ACE_OS::strcmp (t1.c_str(), t3.c_str()) == 0) ? "same" : "different"));
  62   t3 = t1;
  63   ACE_DEBUG ((LM_DEBUG, "t3 trace after assignment is %C\n",
  64         (ACE_OS::strcmp (t1.c_str(), t3.c_str()) == 0) ? "same" : "different"));
  65
  66   try {
  67     func();
  68   }
  69   catch (SomeException& e) {
  70     ACE_DEBUG ((LM_DEBUG,
  71     "SomeException caught at\n%?\n; thrown at\n%C",
  72     e.where_.c_str()));
  73   }
  74
  75   ACE_Stack_Trace one_frame_only(0, 1);
  76   ACE_DEBUG ((LM_DEBUG,
  77               "stack trace of only one frame:\n%C",
  78               one_frame_only.c_str()));
  79
  80   ACE_DEBUG ((LM_DEBUG, "getting ready to end the test at %?\n"));
  81
  82   ACE_END_TEST;
  83   return 0;
  84 }