libcilkrts/runtime/local_state.c

   1 /* local_state.c                  -*-C++-*-
   2  *
   3  *************************************************************************
   4  *
   5  *  @copyright
   6  *  Copyright (C) 2010-2013, 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
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  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
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  38  **************************************************************************/
  39
  40 #include "local_state.h"
  41 #include "bug.h"
  42 #include "full_frame.h"
  43
  44 void run_scheduling_stack_fcn(__cilkrts_worker *w)
  45 {
  46     scheduling_stack_fcn_t fcn = w->l->post_suspend;
  47     full_frame *ff2 = w->l->frame_ff;
  48     __cilkrts_stack_frame *sf2 = w->l->suspended_stack;
  49
  50     w->l->post_suspend = 0;
  51     w->l->suspended_stack = 0;
  52
  53     // Conceptually, after clearing w->l->frame_ff,
  54     // w no longer owns the full frame ff.
  55     // The next time another (possibly different) worker takes
  56     // ownership of ff will be at a provably_good_steal on ff.
  57     w->l->frame_ff = NULL;
  58
  59     CILK_ASSERT(fcn);
  60     CILK_ASSERT(ff2);
  61     fcn(w, ff2, sf2);
  62
  63     // After we run the scheduling stack function, we shouldn't
  64     // (still) not have a full frame.
  65     CILK_ASSERT(NULL == w->l->frame_ff);
  66 }
  67
  68 /* End local_state.c */