mono/sgen/sgen-layout-stats.c

   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
   7 #include "config.h"
   8 #ifdef HAVE_SGEN_GC
   9
  10 #include "sgen/sgen-gc.h"
  11 #include "sgen/sgen-layout-stats.h"
  12 #include <mono/utils/mono-compiler.h>
  13
  14 #ifdef SGEN_OBJECT_LAYOUT_STATISTICS
  15
  16 #define NUM_HISTOGRAM_ENTRIES   (1 << SGEN_OBJECT_LAYOUT_BITMAP_BITS)
  17
  18 static unsigned long histogram [NUM_HISTOGRAM_ENTRIES];
  19 static unsigned long count_bitmap_overflow;
  20 static unsigned long count_ref_array;
  21 static unsigned long count_vtype_array;
  22
  23 void
  24 sgen_object_layout_scanned_bitmap (unsigned int bitmap)
  25 {
  26         g_assert (!(bitmap >> SGEN_OBJECT_LAYOUT_BITMAP_BITS));
  27         ++histogram [bitmap];
  28 }
  29
  30 void
  31 sgen_object_layout_scanned_bitmap_overflow (void)
  32 {
  33         ++count_bitmap_overflow;
  34 }
  35
  36 void
  37 sgen_object_layout_scanned_ref_array (void)
  38 {
  39         ++count_ref_array;
  40 }
  41
  42 void
  43 sgen_object_layout_scanned_vtype_array (void)
  44 {
  45         ++count_vtype_array;
  46 }
  47
  48 void
  49 sgen_object_layout_dump (FILE *out)
  50 {
  51         int i;
  52
  53         for (i = 0; i < NUM_HISTOGRAM_ENTRIES; ++i) {
  54                 if (!histogram [i])
  55                         continue;
  56                 fprintf (out, "%d %lu\n", i, histogram [i]);
  57         }
  58         fprintf (out, "bitmap-overflow %lu\n", count_bitmap_overflow);
  59         fprintf (out, "ref-array %lu\n", count_ref_array);
  60         fprintf (out, "vtype-array %lu\n", count_vtype_array);
  61 }
  62 #else
  63
  64 MONO_EMPTY_SOURCE_FILE (sgen_layout_stats);
  65 #endif /* SGEN_OBJECT_LAYOUT_STATISTICS */
  66 #endif