libcilkrts/runtime/stats.c

   1 /* stats.c                  -*-C-*-
   2  *
   3  *************************************************************************
   4  *
   5  *  @copyright
   6  *  Copyright (C) 2009-2013, Intel Corporation
   7  *  All rights reserved.
   8  *
   9  *  @copyright
  10  *  Redistribution and use in source and binary forms, with or without
  11  *  modification, are permitted provided that the following conditions
  12  *  are met:
  13  *
  14  *    * Redistributions of source code must retain the above copyright
  15  *      notice, this list of conditions and the following disclaimer.
  16  *    * Redistributions in binary form must reproduce the above copyright
  17  *      notice, this list of conditions and the following disclaimer in
  18  *      the documentation and/or other materials provided with the
  19  *      distribution.
  20  *    * Neither the name of Intel Corporation nor the names of its
  21  *      contributors may be used to endorse or promote products derived
  22  *      from this software without specific prior written permission.
  23  *
  24  *  @copyright
  25  *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  26  *  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  27  *  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  28  *  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  29  *  HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  30  *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
  31  *  BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
  32  *  OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  33  *  AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  34  *  LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
  35  *  WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  36  *  POSSIBILITY OF SUCH DAMAGE.
  37  **************************************************************************/
  38
  39 #include "stats.h"
  40 #include "bug.h"
  41 #include "os.h"
  42 #include "local_state.h"
  43
  44 #include <stdio.h>
  45
  46 #define INVALID_START (0ULL - 1ULL)
  47
  48 #ifdef CILK_PROFILE
  49 /* MSVC does not support designated initializers, grrrr... */
  50 static const char *names[] = {
  51     /*[INTERVAL_IN_SCHEDULER]*/                 "in scheduler",
  52     /*[INTERVAL_WORKING]*/                      "  of which: working",
  53     /*[INTERVAL_IN_RUNTIME]*/                   "  of which: in runtime",
  54     /*[INTERVAL_STEALING]*/                     "     of which: stealing",
  55     /*[INTERVAL_STEAL_SUCCESS]*/                "steal success: detach",
  56     /*[INTERVAL_STEAL_FAIL_EMPTYQ]*/            "steal fail: empty queue",
  57     /*[INTERVAL_STEAL_FAIL_LOCK]*/              "steal fail: victim locked",
  58     /*[INTERVAL_STEAL_FAIL_USER_WORKER]*/       "steal fail: user worker",
  59     /*[INTERVAL_STEAL_FAIL_DEKKER]*/            "steal fail: dekker",
  60     /*[INTERVAL_SYNC_CHECK]*/                   "sync check",
  61     /*[INTERVAL_THE_EXCEPTION_CHECK]*/          "THE exception check",
  62     /*[INTERVAL_THE_EXCEPTION_CHECK_USELESS]*/  "  of which: useless",
  63     /*[INTERVAL_RETURNING]*/                    "returning",
  64     /*[INTERVAL_FINALIZE_CHILD]*/               "finalize child",
  65     /*[INTERVAL_PROVABLY_GOOD_STEAL]*/          "provably good steal",
  66     /*[INTERVAL_UNCONDITIONAL_STEAL]*/          "unconditional steal",
  67     /*[INTERVAL_ALLOC_FULL_FRAME]*/             "alloc full frame",
  68     /*[INTERVAL_FRAME_ALLOC_LARGE]*/            "large frame alloc",
  69     /*[INTERVAL_FRAME_ALLOC]*/                  "small frame alloc",
  70     /*[INTERVAL_FRAME_ALLOC_GLOBAL]*/           "  of which: to global pool",
  71     /*[INTERVAL_FRAME_FREE_LARGE]*/             "large frame free",
  72     /*[INTERVAL_FRAME_FREE]*/                   "small frame free",
  73     /*[INTERVAL_FRAME_FREE_GLOBAL]*/            "  of which: to global pool",
  74     /*[INTERVAL_MUTEX_LOCK]*/                   "mutex lock",
  75     /*[INTERVAL_MUTEX_LOCK_SPINNING]*/          "  spinning",
  76     /*[INTERVAL_MUTEX_LOCK_YIELDING]*/          "  yielding",
  77     /*[INTERVAL_MUTEX_TRYLOCK]*/                "mutex trylock",
  78     /*[INTERVAL_FIBER_ALLOCATE]*/               "fiber_allocate",
  79     /*[INTERVAL_FIBER_DEALLOCATE]*/             "fiber_deallocate",
  80     /*[INTERVAL_FIBER_ALLOCATE_FROM_THREAD]*/   "fiber_allocate_from_thread",
  81     /*[INTERVAL_FIBER_DEALLOCATE_FROM_THREAD]*/ "fiber_deallocate (thread)",
  82     /*[INTERVAL_SUSPEND_RESUME_OTHER]*/         "fiber suspend self + resume",
  83     /*[INTERVAL_DEALLOCATE_RESUME_OTHER]*/      "fiber deallocate self + resume",
  84 };
  85 #endif
  86
  87 void __cilkrts_init_stats(statistics *s)
  88 {
  89     int i;
  90     for (i = 0; i < INTERVAL_N; ++i) {
  91         s->start[i] = INVALID_START;
  92         s->accum[i] = 0;
  93         s->count[i] = 0;
  94     }
  95
  96     s->stack_hwm = 0;
  97 }
  98
  99 #ifdef CILK_PROFILE
 100 void __cilkrts_accum_stats(statistics *to, statistics *from)
 101 {
 102     int i;
 103
 104     for (i = 0; i < INTERVAL_N; ++i) {
 105         to->accum[i] += from->accum[i];
 106         to->count[i] += from->count[i];
 107         from->accum[i] = 0;
 108         from->count[i] = 0;
 109     }
 110
 111     if (from->stack_hwm > to->stack_hwm)
 112         to->stack_hwm = from->stack_hwm;
 113     from->stack_hwm = 0;
 114 }
 115
 116 void __cilkrts_note_interval(__cilkrts_worker *w, enum interval i)
 117 {
 118     if (w) {
 119         statistics *s = w->l->stats;
 120         CILK_ASSERT(s->start[i] == INVALID_START);
 121         s->count[i]++;
 122     }
 123 }
 124
 125 void __cilkrts_start_interval(__cilkrts_worker *w, enum interval i)
 126 {
 127     if (w) {
 128         statistics *s = w->l->stats;
 129         CILK_ASSERT(s->start[i] == INVALID_START);
 130         s->start[i] = __cilkrts_getticks();
 131         s->count[i]++;
 132     }
 133 }
 134
 135 void __cilkrts_stop_interval(__cilkrts_worker *w, enum interval i)
 136 {
 137     if (w) {
 138         statistics *s = w->l->stats;
 139         CILK_ASSERT(s->start[i] != INVALID_START);
 140         s->accum[i] += __cilkrts_getticks() - s->start[i];
 141         s->start[i] = INVALID_START;
 142     }
 143 }
 144
 145 void dump_stats_to_file(FILE *stat_file, statistics *s)
 146 {
 147     int i;
 148     fprintf(stat_file, "\nCILK PLUS RUNTIME SYSTEM STATISTICS:\n\n");
 149
 150     fprintf(stat_file,
 151             "  %-32s: %15s %10s %12s %10s\n",
 152             "event",
 153             "count",
 154             "ticks",
 155             "ticks/count",
 156             "%total"
 157         );
 158     for (i = 0; i < INTERVAL_N; ++i) {
 159         fprintf(stat_file, "  %-32s: %15llu", names[i], s->count[i]);
 160         if (s->accum[i]) {
 161             fprintf(stat_file, " %10.3g %12.3g %10.2f",
 162                     (double)s->accum[i],
 163                     (double)s->accum[i] / (double)s->count[i],
 164                     100.0 * (double)s->accum[i] /
 165                     (double)s->accum[INTERVAL_IN_SCHEDULER]);
 166         }
 167         fprintf(stat_file, "\n");
 168     }
 169 }
 170 #endif // CILK_PROFILE
 171
 172 /* End stats.c */