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131 lines
4.1 KiB
C++
131 lines
4.1 KiB
C++
/* pedigrees.h -*-C++-*-
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*
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*************************************************************************
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*
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* @copyright
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* Copyright (C) 2009-2013, Intel Corporation
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* All rights reserved.
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*
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* @copyright
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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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* @copyright
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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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#ifndef INCLUDED_PEDIGREES_DOT_H
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#define INCLUDED_PEDIGREES_DOT_H
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#include <cilk/common.h>
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#include <internal/abi.h>
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#include "rts-common.h"
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#include "global_state.h"
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#include "os.h"
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__CILKRTS_BEGIN_EXTERN_C
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/**
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* @file pedigrees.h
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*
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* @brief pedigrees.h declares common routines related to pedigrees
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* and the pedigree API.
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*/
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/**
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* @brief Sets the leaf pedigree node for the current user thread.
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*
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* A typical implementation stores this pedigree node in thread-local
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* storage.
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*
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* Preconditions:
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* - Current thread should be a user thread.
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*
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* @param leaf The pedigree node to store as a leaf.
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*/
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COMMON_PORTABLE
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void __cilkrts_set_pedigree_leaf(__cilkrts_pedigree* leaf);
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/**
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* Load the pedigree leaf node from thread-local storage into the
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* current user worker. This method should execute as a part of
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* binding the user thread to a worker.
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*
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* Preconditions:
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*
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* - w should be the worker for the current thread
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* - w should be a user thread.
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*/
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COMMON_PORTABLE
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void load_pedigree_leaf_into_user_worker(__cilkrts_worker *w);
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/**
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* Save the pedigree leaf node from the worker into thread-local
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* storage. This method should execute as part of unbinding a user
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* thread from a worker.
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*
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* Preconditions:
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*
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* - w should be the worker for the current thread
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* - w should be a user thread.
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*/
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COMMON_PORTABLE
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void save_pedigree_leaf_from_user_worker(__cilkrts_worker *w);
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/**
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* Update pedigree for a worker when leaving a frame.
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*
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* If this is the frame of a spawn helper (indicated by the
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* CILK_FRAME_DETACHED flag) we must update the pedigree. The
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* pedigree points to nodes allocated on the stack. Failing to
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* update it will result in a accvio/segfault if the pedigree is
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* walked. This must happen for all spawn helper frames, even if
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* we're processing an exception.
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*/
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COMMON_PORTABLE
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inline void update_pedigree_on_leave_frame(__cilkrts_worker *w,
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__cilkrts_stack_frame *sf)
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{
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// Update the worker's pedigree information if this is an ABI 1 or later
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// frame
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if (CILK_FRAME_VERSION_VALUE(sf->flags) >= 1)
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{
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w->pedigree.rank = sf->spawn_helper_pedigree.rank + 1;
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w->pedigree.parent = sf->spawn_helper_pedigree.parent;
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}
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}
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__CILKRTS_END_EXTERN_C
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#endif // ! defined(INCLUDED_PEDIGREES_DOT_H)
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