1 files changed, 112 insertions, 0 deletions
diff --git a/libcilkrts/runtime/pedigrees.c b/libcilkrts/runtime/pedigrees.c
new file mode 100644
index 00000000000..dee4d9cb411
--- /dev/null
+++ b/libcilkrts/runtime/pedigrees.c
@@ -0,0 +1,112 @@
+/* pedigrees.c                  -*-C-*-
+ *
+ *************************************************************************
+ *
+ *  @copyright
+ *  Copyright (C) 2007-2013, 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.
+ *
+ **************************************************************************/
+
+#include "pedigrees.h"
+#include "local_state.h"
+
+/*************************************************************
+  Pedigree API code.
+*************************************************************/
+
+/*
+ * C99 requires that every inline function with external linkage have one
+ * extern declaration in the program (with the inline definition in scope).
+ */
+COMMON_PORTABLE
+extern void update_pedigree_on_leave_frame(__cilkrts_worker *w,
+					   __cilkrts_stack_frame *sf);
+
+void __cilkrts_set_pedigree_leaf(__cilkrts_pedigree *leaf)
+{
+    __cilkrts_set_tls_pedigree_leaf(leaf);
+}
+
+void load_pedigree_leaf_into_user_worker(__cilkrts_worker *w)
+{
+    __cilkrts_pedigree *pedigree_leaf;
+    CILK_ASSERT(w->l->type == WORKER_USER);
+    pedigree_leaf = __cilkrts_get_tls_pedigree_leaf(1);
+    w->pedigree = *pedigree_leaf;
+
+    // Save a pointer to the old leaf.
+    // We'll need to restore it later.
+    CILK_ASSERT(w->l->original_pedigree_leaf == NULL);
+    w->l->original_pedigree_leaf = pedigree_leaf;
+    
+    __cilkrts_set_tls_pedigree_leaf(&w->pedigree);
+    
+    // Check that this new pedigree root has at least two values.
+    CILK_ASSERT(w->pedigree.parent);
+    CILK_ASSERT(w->pedigree.parent->parent == NULL);
+}
+
+void save_pedigree_leaf_from_user_worker(__cilkrts_worker *w)
+{
+    CILK_ASSERT(w->l->type == WORKER_USER);
+
+    // Existing leaf in tls should be for the current worker.
+    // This assert is expensive to check though.
+    // CILK_ASSERT(&w->pedigree == __cilkrts_get_tls_pedigree_leaf(0));
+    CILK_ASSERT(w->l->original_pedigree_leaf);
+
+    // w should finish with a pedigree node that points to 
+    // the same root that we just looked up.
+
+    // TODO: This assert should be valid.
+    // But we are removing it now to make exceptions (without pedigrees) work.
+    // Currently, reading the pedigree after an exception is caught
+    // fails because the pedigree chain not restored correctly. 
+    // CILK_ASSERT(w->l->original_pedigree_leaf->next == w->pedigree.parent);
+    w->l->original_pedigree_leaf->rank = w->pedigree.rank;
+
+    // Save that leaf pointer back into tls.
+    __cilkrts_set_tls_pedigree_leaf(w->l->original_pedigree_leaf);
+    // Null out worker's leaf for paranoia.
+    w->l->original_pedigree_leaf = NULL;
+}
+
+
+
+/*
+  Local Variables: **
+  c-file-style:"bsd" **
+  c-basic-offset:4 **
+  indent-tabs-mode:nil **
+  End: **
+*/