mono/metadata/sgen-layout-stats.c

   1 /*
   2  * Copyright Xamarin Inc (http://www.xamarin.com)
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining
   5  * a copy of this software and associated documentation files (the
   6  * "Software"), to deal in the Software without restriction, including
   7  * without limitation the rights to use, copy, modify, merge, publish,
   8  * distribute, sublicense, and/or sell copies of the Software, and to
   9  * permit persons to whom the Software is furnished to do so, subject to
  10  * the following conditions:
  11  *
  12  * The above copyright notice and this permission notice shall be
  13  * included in all copies or substantial portions of the Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  16  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  17  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  18  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  19  * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  20  * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  21  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  22  */
  23
  24 #include "config.h"
  25 #ifdef HAVE_SGEN_GC
  26
  27 #include "metadata/sgen-gc.h"
  28 #include "metadata/sgen-layout-stats.h"
  29
  30 #ifdef SGEN_OBJECT_LAYOUT_STATISTICS
  31
  32 #define NUM_HISTOGRAM_ENTRIES   (1 << SGEN_OBJECT_LAYOUT_BITMAP_BITS)
  33
  34 static unsigned long histogram [NUM_HISTOGRAM_ENTRIES];
  35 static unsigned long count_bitmap_overflow;
  36 static unsigned long count_ref_array;
  37 static unsigned long count_vtype_array;
  38
  39 void
  40 sgen_object_layout_scanned_bitmap (unsigned int bitmap)
  41 {
  42         g_assert (!(bitmap >> SGEN_OBJECT_LAYOUT_BITMAP_BITS));
  43         ++histogram [bitmap];
  44 }
  45
  46 void
  47 sgen_object_layout_scanned_bitmap_overflow (void)
  48 {
  49         ++count_bitmap_overflow;
  50 }
  51
  52 void
  53 sgen_object_layout_scanned_ref_array (void)
  54 {
  55         ++count_ref_array;
  56 }
  57
  58 void
  59 sgen_object_layout_scanned_vtype_array (void)
  60 {
  61         ++count_vtype_array;
  62 }
  63
  64 void
  65 sgen_object_layout_dump (FILE *out)
  66 {
  67         int i;
  68
  69         for (i = 0; i < NUM_HISTOGRAM_ENTRIES; ++i) {
  70                 if (!histogram [i])
  71                         continue;
  72                 fprintf (out, "%d %lu\n", i, histogram [i]);
  73         }
  74         fprintf (out, "bitmap-overflow %lu\n", count_bitmap_overflow);
  75         fprintf (out, "ref-array %lu\n", count_ref_array);
  76         fprintf (out, "vtype-array %lu\n", count_vtype_array);
  77 }
  78
  79 #endif
  80 #endif