mono/sgen/sgen-layout-stats.c

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