mono/sgen/sgen-layout-stats.h

   1 /**
   2  * \file
   3  * Copyright Xamarin Inc (http://www.xamarin.com)
   4  *
   5  * Licensed under the MIT license. See LICENSE file in the project root for full license information.
   6  */
   7 #ifndef __MONO_SGEN_LAYOUT_STATS_H__
   8 #define __MONO_SGEN_LAYOUT_STATS_H__
   9
  10 #ifdef SGEN_OBJECT_LAYOUT_STATISTICS
  11
  12 #define SGEN_OBJECT_LAYOUT_BITMAP_BITS  16
  13
  14 void sgen_object_layout_scanned_bitmap (unsigned int bitmap);
  15 void sgen_object_layout_scanned_bitmap_overflow (void);
  16 void sgen_object_layout_scanned_ref_array (void);
  17 void sgen_object_layout_scanned_vtype_array (void);
  18
  19 void sgen_object_layout_dump (FILE *out);
  20
  21 #define SGEN_OBJECT_LAYOUT_STATISTICS_DECLARE_BITMAP    unsigned int __object_layout_bitmap = 0
  22 #define SGEN_OBJECT_LAYOUT_STATISTICS_MARK_BITMAP(o,p)  do {            \
  23                 int __index = ((void**)(p)) - ((void**)(((char*)(o)) + SGEN_CLIENT_OBJECT_HEADER_SIZE)); \
  24                 if (__index >= SGEN_OBJECT_LAYOUT_BITMAP_BITS)          \
  25                         __object_layout_bitmap = (unsigned int)-1;      \
  26                 else if (__object_layout_bitmap != (unsigned int)-1)    \
  27                         __object_layout_bitmap |= (1 << __index);       \
  28         } while (0)
  29 #define SGEN_OBJECT_LAYOUT_STATISTICS_COMMIT_BITMAP do {                \
  30                 if (__object_layout_bitmap == (unsigned int)-1)         \
  31                         sgen_object_layout_scanned_bitmap_overflow ();  \
  32                 else                                                    \
  33                         sgen_object_layout_scanned_bitmap (__object_layout_bitmap); \
  34         } while (0)
  35
  36 #else
  37
  38 #define sgen_object_layout_scanned_bitmap(bitmap)
  39 #define sgen_object_layout_scanned_bitmap_overflow()
  40 #define sgen_object_layout_scanned_ref_array()
  41 #define sgen_object_layout_scanned_vtype_array()
  42
  43 #define sgen_object_layout_dump(out)
  44
  45 #define SGEN_OBJECT_LAYOUT_STATISTICS_DECLARE_BITMAP
  46 #define SGEN_OBJECT_LAYOUT_STATISTICS_MARK_BITMAP(o,p)
  47 #define SGEN_OBJECT_LAYOUT_STATISTICS_COMMIT_BITMAP
  48
  49 #endif
  50
  51 #endif