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+/* pedigrees.h -*-C++-*-
+ *
+ *************************************************************************
+ *
+ * @copyright
+ * Copyright (C) 2009-2013, Intel Corporation
+ * All rights reserved.
+ *
+ * @copyright
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name of Intel Corporation nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * @copyright
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
+ * WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ **************************************************************************/
+
+#ifndef INCLUDED_PEDIGREES_DOT_H
+#define INCLUDED_PEDIGREES_DOT_H
+
+
+#include <cilk/common.h>
+#include <internal/abi.h>
+
+#include "rts-common.h"
+#include "global_state.h"
+#include "os.h"
+
+__CILKRTS_BEGIN_EXTERN_C
+
+/**
+ * @file pedigrees.h
+ *
+ * @brief pedigrees.h declares common routines related to pedigrees
+ * and the pedigree API.
+ */
+
+
+/**
+ * @brief Sets the leaf pedigree node for the current user thread.
+ *
+ * A typical implementation stores this pedigree node in thread-local
+ * storage.
+ *
+ * Preconditions:
+ * - Current thread should be a user thread.
+ *
+ * @param leaf The pedigree node to store as a leaf.
+ */
+COMMON_PORTABLE
+void __cilkrts_set_pedigree_leaf(__cilkrts_pedigree* leaf);
+
+
+/**
+ * Load the pedigree leaf node from thread-local storage into the
+ * current user worker. This method should execute as a part of
+ * binding the user thread to a worker.
+ *
+ * Preconditions:
+ *
+ * - w should be the worker for the current thread
+ * - w should be a user thread.
+ */
+COMMON_PORTABLE
+void load_pedigree_leaf_into_user_worker(__cilkrts_worker *w);
+
+/**
+ * Save the pedigree leaf node from the worker into thread-local
+ * storage. This method should execute as part of unbinding a user
+ * thread from a worker.
+ *
+ * Preconditions:
+ *
+ * - w should be the worker for the current thread
+ * - w should be a user thread.
+ */
+COMMON_PORTABLE
+void save_pedigree_leaf_from_user_worker(__cilkrts_worker *w);
+
+
+
+/**
+ * Update pedigree for a worker when leaving a frame.
+ *
+ * If this is the frame of a spawn helper (indicated by the
+ * CILK_FRAME_DETACHED flag) we must update the pedigree. The
+ * pedigree points to nodes allocated on the stack. Failing to
+ * update it will result in a accvio/segfault if the pedigree is
+ * walked. This must happen for all spawn helper frames, even if
+ * we're processing an exception.
+ */
+COMMON_PORTABLE
+inline void update_pedigree_on_leave_frame(__cilkrts_worker *w,
+ __cilkrts_stack_frame *sf)
+{
+ // Update the worker's pedigree information if this is an ABI 1 or later
+ // frame
+ if (CILK_FRAME_VERSION_VALUE(sf->flags) >= 1)
+ {
+ w->pedigree.rank = sf->spawn_helper_pedigree.rank + 1;
+ w->pedigree.parent = sf->spawn_helper_pedigree.parent;
+ }
+}
+
+
+
+__CILKRTS_END_EXTERN_C
+
+#endif // ! defined(INCLUDED_PEDIGREES_DOT_H)