Function DbugParse

dbug/dbug.c:499–772

 */

int DbugParse(CODE_STATE *cs, const char *control)
{
  const char *end;
  int rel, f_used=0;
  struct settings *stack;

  /*
    Make sure we are not changing settings while inside a
      DBUG_LOCK_FILE
      DBUG_UNLOCK_FILE
    section, that is a mis use, that would cause changing
    DBUG_FILE while the caller prints to it.
  */
  assert(! cs->locked);

  stack= cs->stack;

  /*
    When parsing the global init_settings itself,
    make sure to block every other thread using dbug functions.
  */
  assert(cs->m_read_lock_count == 0);
  if (stack == &init_settings)
    rw_wrlock(&THR_LOCK_init_settings);

  if (control[0] == '-' && control[1] == '#')
    control+=2;

  rel= control[0] == '+' || control[0] == '-';
  if ((!rel || (!stack->out_file && !stack->next)))
  {
    /* Free memory associated with the state before resetting its members */
    FreeState(cs, stack, 0);
    stack->flags= 0;
    stack->delay= 0;
    stack->maxdepth= 0;
    stack->sub_level= 0;
    stack->out_file= stderr;
    stack->prof_file= NULL;
    stack->functions= NULL;
    stack->p_functions= NULL;
    stack->keywords= NULL;
    stack->processes= NULL;
  }
  else if (!stack->out_file)
  {
    stack->flags= stack->next->flags;
    stack->delay= stack->next->delay;
    stack->maxdepth= stack->next->maxdepth;
    stack->sub_level= stack->next->sub_level;
    strcpy(stack->name, stack->next->name);
    stack->prof_file= stack->next->prof_file;
    if (stack->next == &init_settings)
    {
      assert(stack != &init_settings);
      rw_rdlock(&THR_LOCK_init_settings);

      /*