libhsail-rt/rt/fbarrier.c

   1 /* fbarrier.c -- HSAIL fbarrier built-ins.
   2
   3    Copyright (C) 2015-2017 Free Software Foundation, Inc.
   4    Contributed by Pekka Jaaskelainen <pekka.jaaskelainen@parmance.com>
   5    for General Processor Tech.
   6
   7    Permission is hereby granted, free of charge, to any person obtaining a
   8    copy of this software and associated documentation files
   9    (the "Software"), to deal in the Software without restriction, including
  10    without limitation the rights to use, copy, modify, merge, publish,
  11    distribute, sublicense, and/or sell copies of the Software, and to
  12    permit persons to whom the Software is furnished to do so, subject to
  13    the following conditions:
  14
  15    The above copyright notice and this permission notice shall be included
  16    in all copies or substantial portions of the Software.
  17
  18    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19    OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  21    IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
  22    DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  23    OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  24    USE OR OTHER DEALINGS IN THE SOFTWARE.
  25 */
  26
  27 #include <stdlib.h>
  28 #include <signal.h>
  29
  30 #include "workitems.h"
  31 #include "phsa-rt.h"
  32
  33 #ifdef HAVE_FIBERS
  34 #include "fibers.h"
  35
  36 typedef fiber_barrier_t fbarrier;
  37
  38 void
  39 __hsail_initfbar (uint32_t addr, PHSAWorkItem *wi)
  40 {
  41   fbarrier *fbar = (fbarrier *) (wi->wg->group_base_ptr + addr);
  42   fbar->threshold = 0;
  43   fbar->reached = 0;
  44   fbar->waiting_count = 0;
  45 }
  46
  47 void
  48 __hsail_releasefbar (uint32_t addr, PHSAWorkItem *wi)
  49 {
  50   fbarrier *fbar = (fbarrier *) (wi->wg->group_base_ptr + addr);
  51   fbar->threshold = 0;
  52   fbar->reached = 0;
  53   fbar->waiting_count = 0;
  54 }
  55
  56 void
  57 __hsail_joinfbar (uint32_t addr, PHSAWorkItem *wi)
  58 {
  59   fbarrier *fbar = (fbarrier *) (wi->wg->group_base_ptr + addr);
  60   ++fbar->threshold;
  61 }
  62
  63 void
  64 __hsail_leavefbar (uint32_t addr, PHSAWorkItem *wi)
  65 {
  66   fbarrier *fbar = (fbarrier *) (wi->wg->group_base_ptr + addr);
  67   --fbar->threshold;
  68 }
  69
  70 void
  71 __hsail_waitfbar (uint32_t addr, PHSAWorkItem *wi)
  72 {
  73   fbarrier *fbar = (fbarrier *) (wi->wg->group_base_ptr + addr);
  74   fiber_barrier_reach (fbar);
  75 }
  76
  77 void
  78 __hsail_arrivefbar (uint32_t addr, PHSAWorkItem *wi)
  79 {
  80   fbarrier *fbar = (fbarrier *) (wi->wg->group_base_ptr + addr);
  81   ++fbar->reached;
  82   if (fbar->reached == fbar->threshold)
  83     fbar->reached = 0;
  84 }
  85
  86 #endif
  87