← Back to branch summary

~drizzle-trunk/drizzle/development

« back to all changes in this revision

Viewing changes to drizzled/check_stack_overrun.cc

  • Committer: Padraig O'Sullivan
  • Date: 2009-07-22 23:26:26 UTC
  • mto: (1039.5.43 replication)
  • mto: This revision was merged to the branch mainline in revision 1130.
  • Revision ID: osullivan.padraig@gmail.com-20090722232626-mu4khq7ho6dqcf7q
Created a simple filtered replicator that can filter by schema name or table
name.

Show diffs side-by-side

added added

removed removed

Lines of Context:
drizzled/check_stack_overrun.cc
1
1
/* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
2
2
 *  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
3
3
 *
4
 
 *  Copyright (C) 2008 Sun Microsystems, Inc.
 
4
 *  Copyright (C) 2008 Sun Microsystems
5
5
 *
6
6
 *  This program is free software; you can redistribute it and/or modify
7
7
 *  it under the terms of the GNU General Public License as published by
17
17
 *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
18
18
 */
19
19
 
20
 
#include "config.h"
21
 
#include "drizzled/internal/my_sys.h"
 
20
#include <drizzled/global.h>
 
21
#include <mysys/my_sys.h>
22
22
#include <drizzled/definitions.h>
23
23
#include <drizzled/session.h>
24
24
#include <drizzled/error.h>
25
25
#include <drizzled/check_stack_overrun.h>
26
26
 
27
 
namespace drizzled
28
 
{
29
 
 
30
27
/****************************************************************************
31
28
        Check stack size; Send error if there isn't enough stack to continue
32
29
****************************************************************************/
33
 
#if defined(STACK_DIRECTION) && (STACK_DIRECTION < 0)
34
 
static const bool stack_direction_negative = true;
 
30
#if STACK_DIRECTION < 0
 
31
#define used_stack(A,B) (long) (A - B)
35
32
#else
36
 
static const bool stack_direction_negative = false;
 
33
#define used_stack(A,B) (long) (B - A)
37
34
#endif
38
35
 
39
 
template <typename A_T, typename B_T>
40
 
inline static long used_stack(A_T A, B_T B)
41
 
{
42
 
  if (stack_direction_negative)
43
 
    return (long) (A - B);
44
 
  else
45
 
    return (long) (B - A);
46
 
}
47
 
 
48
36
extern size_t my_thread_stack_size;
49
37
 
50
38
bool check_stack_overrun(Session *session, long margin, void *)
51
39
{
52
40
  long stack_used;
 
41
  assert(session == current_session);
53
42
  if ((stack_used=used_stack(session->thread_stack,(char*) &stack_used)) >=
54
43
      (long) (my_thread_stack_size - margin))
55
44
  {
60
49
  }
61
50
  return false;
62
51
}
63
 
 
64
 
} /* namespace drizzled */