mono/sgen/sgen-layout-stats.h

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