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Viewing changes to drizzled/check_stack_overrun.cc

  • Committer: Monty Taylor
  • Date: 2010-04-22 02:46:23 UTC
  • mto: (1497.3.4 enable-dtrace)
  • mto: This revision was merged to the branch mainline in revision 1527.
  • Revision ID: mordred@inaugust.com-20100422024623-4urw8fi8eraci08p
https://launchpad.net/bugs/561683
Don't overwrite the pandora_vc_revinfo file if we don't have new
authoratative information.

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drizzled/check_stack_overrun.cc
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        Check stack size; Send error if there isn't enough stack to continue
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****************************************************************************/
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#if defined(STACK_DIRECTION) && (STACK_DIRECTION < 0)
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static const bool stack_direction_negative = true;
 
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#define used_stack(A,B) (long) (A - B)
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#else
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static const bool stack_direction_negative = false;
 
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#define used_stack(A,B) (long) (B - A)
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#endif
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template <typename A_T, typename B_T>
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inline static long used_stack(A_T A, B_T B)
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{
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  if (stack_direction_negative)
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    return (long) (A - B);
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  else
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    return (long) (B - A);
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}
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extern size_t my_thread_stack_size;
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bool check_stack_overrun(Session *session, long margin, void *)
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{
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  long stack_used;
 
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  assert(session == current_session);
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  if ((stack_used=used_stack(session->thread_stack,(char*) &stack_used)) >=
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      (long) (my_thread_stack_size - margin))
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  {