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124 lines
4.8 KiB
C
124 lines
4.8 KiB
C
/* pedigrees.c -*-C-*-
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*
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*************************************************************************
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*
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* Copyright (C) 2007-2016, Intel Corporation
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
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* WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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* *********************************************************************
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*
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* PLEASE NOTE: This file is a downstream copy of a file mainitained in
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* a repository at cilkplus.org. Changes made to this file that are not
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* submitted through the contribution process detailed at
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* http://www.cilkplus.org/submit-cilk-contribution will be lost the next
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* time that a new version is released. Changes only submitted to the
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* GNU compiler collection or posted to the git repository at
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* https://bitbucket.org/intelcilkruntime/intel-cilk-runtime.git are
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* not tracked.
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*
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* We welcome your contributions to this open source project. Thank you
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* for your assistance in helping us improve Cilk Plus.
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*
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**************************************************************************/
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#include "pedigrees.h"
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#include "local_state.h"
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/*************************************************************
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Pedigree API code.
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*************************************************************/
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/*
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* C99 requires that every inline function with external linkage have one
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* extern declaration in the program (with the inline definition in scope).
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*/
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COMMON_PORTABLE
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extern void update_pedigree_on_leave_frame(__cilkrts_worker *w,
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__cilkrts_stack_frame *sf);
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void __cilkrts_set_pedigree_leaf(__cilkrts_pedigree *leaf)
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{
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__cilkrts_set_tls_pedigree_leaf(leaf);
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}
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void load_pedigree_leaf_into_user_worker(__cilkrts_worker *w)
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{
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__cilkrts_pedigree *pedigree_leaf;
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CILK_ASSERT(w->l->type == WORKER_USER);
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pedigree_leaf = __cilkrts_get_tls_pedigree_leaf(1);
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w->pedigree = *pedigree_leaf;
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// Save a pointer to the old leaf.
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// We'll need to restore it later.
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CILK_ASSERT(w->l->original_pedigree_leaf == NULL);
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w->l->original_pedigree_leaf = pedigree_leaf;
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__cilkrts_set_tls_pedigree_leaf(&w->pedigree);
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// Check that this new pedigree root has at least two values.
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CILK_ASSERT(w->pedigree.parent);
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CILK_ASSERT(w->pedigree.parent->parent == NULL);
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}
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void save_pedigree_leaf_from_user_worker(__cilkrts_worker *w)
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{
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CILK_ASSERT(w->l->type == WORKER_USER);
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// Existing leaf in tls should be for the current worker.
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// This assert is expensive to check though.
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// CILK_ASSERT(&w->pedigree == __cilkrts_get_tls_pedigree_leaf(0));
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CILK_ASSERT(w->l->original_pedigree_leaf);
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// w should finish with a pedigree node that points to
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// the same root that we just looked up.
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// TODO: This assert should be valid.
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// But we are removing it now to make exceptions (without pedigrees) work.
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// Currently, reading the pedigree after an exception is caught
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// fails because the pedigree chain not restored correctly.
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// CILK_ASSERT(w->l->original_pedigree_leaf->next == w->pedigree.parent);
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w->l->original_pedigree_leaf->rank = w->pedigree.rank;
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// Save that leaf pointer back into tls.
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__cilkrts_set_tls_pedigree_leaf(w->l->original_pedigree_leaf);
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// Null out worker's leaf for paranoia.
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w->l->original_pedigree_leaf = NULL;
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}
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/*
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Local Variables: **
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c-file-style:"bsd" **
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c-basic-offset:4 **
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indent-tabs-mode:nil **
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End: **
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*/
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