vppinfra: move unused code to extras/deprecated/vppinfra

Type: improvement

Signed-off-by: Dave Barach <dave@barachs.net>
Change-Id: Id28299a188feefa1899d835fd499f018af95d81b

1 files changed, 0 insertions, 473 deletions

diff --git a/src/vppinfra/fheap.c b/src/vppinfra/fheap.c
deleted file mode 100644
index 034168e85ab..00000000000
--- a/src/vppinfra/fheap.c
+++ /dev/null
@@ -1,473 +0,0 @@
-/*
- * Copyright (c) 2015 Cisco and/or its affiliates.
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at:
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-#include <vppinfra/fheap.h>
-
-/* Fibonacci heaps. */
-always_inline fheap_node_t *
-fheap_get_node (fheap_t * f, u32 i)
-{
-  return i != ~0 ? vec_elt_at_index (f->nodes, i) : 0;
-}
-
-always_inline fheap_node_t *
-fheap_get_root (fheap_t * f)
-{
-  return fheap_get_node (f, f->min_root);
-}
-
-static void
-fheap_validate (fheap_t * f)
-{
-  fheap_node_t *n, *m;
-  uword ni, si;
-
-  if (!CLIB_DEBUG || !f->enable_validate)
-    return;
-
-  vec_foreach_index (ni, f->nodes)
-  {
-    n = vec_elt_at_index (f->nodes, ni);
-
-    if (!n->is_valid)
-      continue;
-
-    /* Min root must have minimal key. */
-    m = vec_elt_at_index (f->nodes, f->min_root);
-    ASSERT (n->key >= m->key);
-
-    /* Min root must have no parent. */
-    if (ni == f->min_root)
-      ASSERT (n->parent == ~0);
-
-    /* Check sibling linkages. */
-    if (n->next_sibling == ~0)
-      ASSERT (n->prev_sibling == ~0);
-    else if (n->prev_sibling == ~0)
-      ASSERT (n->next_sibling == ~0);
-    else
-      {
-	fheap_node_t *prev, *next;
-	u32 si = n->next_sibling, si_start = si;
-	do
-	  {
-	    m = vec_elt_at_index (f->nodes, si);
-	    prev = vec_elt_at_index (f->nodes, m->prev_sibling);
-	    next = vec_elt_at_index (f->nodes, m->next_sibling);
-	    ASSERT (prev->next_sibling == si);
-	    ASSERT (next->prev_sibling == si);
-	    si = m->next_sibling;
-	  }
-	while (si != si_start);
-      }
-
-    /* Loop through all siblings. */
-    {
-      u32 n_siblings = 0;
-
-      foreach_fheap_node_sibling (f, si, n->next_sibling, (
-							    {
-							    m =
-							    vec_elt_at_index
-							    (f->nodes, si);
-							    /* All siblings must have same parent. */
-							    ASSERT (m->parent
-								    ==
-								    n->
-								    parent);
-							    n_siblings += 1;}
-				  ));
-
-      /* Either parent is non-empty or there are siblings present. */
-      if (n->parent == ~0 && ni != f->min_root)
-	ASSERT (n_siblings > 0);
-    }
-
-    /* Loop through all children. */
-    {
-      u32 found_first_child = n->first_child == ~0;
-      u32 n_children = 0;
-
-      foreach_fheap_node_sibling (f, si, n->first_child, (
-							   {
-							   m =
-							   vec_elt_at_index
-							   (f->nodes, si);
-							   /* Children must have larger keys than their parent. */
-							   ASSERT (m->key >=
-								   n->key);
-							   if
-							   (!found_first_child)
-							   found_first_child =
-							   si ==
-							   n->first_child;
-							   n_children += 1;}
-				  ));
-
-      /* Check that first child is present on list. */
-      ASSERT (found_first_child);
-
-      /* Make sure rank is correct. */
-      ASSERT (n->rank == n_children);
-    }
-  }
-
-  /* Increment serial number for each successful validate.
-     Failure can be used as condition for gdb breakpoints. */
-  f->validate_serial++;
-}
-
-always_inline void
-fheap_node_add_sibling (fheap_t * f, u32 ni, u32 ni_to_add)
-{
-  fheap_node_t *n = vec_elt_at_index (f->nodes, ni);
-  fheap_node_t *n_to_add = vec_elt_at_index (f->nodes, ni_to_add);
-  fheap_node_t *n_next = fheap_get_node (f, n->next_sibling);
-  fheap_node_t *parent;
-
-  /* Empty list? */
-  if (n->next_sibling == ~0)
-    {
-      ASSERT (n->prev_sibling == ~0);
-      n->next_sibling = n->prev_sibling = ni_to_add;
-      n_to_add->next_sibling = n_to_add->prev_sibling = ni;
-    }
-  else
-    {
-      /* Add node after existing node. */
-      n_to_add->prev_sibling = ni;
-      n_to_add->next_sibling = n->next_sibling;
-
-      n->next_sibling = ni_to_add;
-      n_next->prev_sibling = ni_to_add;
-    }
-
-  n_to_add->parent = n->parent;
-  parent = fheap_get_node (f, n->parent);
-  if (parent)
-    parent->rank += 1;
-}
-
-void
-fheap_add (fheap_t * f, u32 ni, u32 key)
-{
-  fheap_node_t *r, *n;
-  u32 ri;
-
-  n = vec_elt_at_index (f->nodes, ni);
-
-  clib_memset (n, 0, sizeof (n[0]));
-  n->parent = n->first_child = n->next_sibling = n->prev_sibling = ~0;
-  n->key = key;
-
-  r = fheap_get_root (f);
-  ri = f->min_root;
-  if (!r)
-    {
-      /* No root?  Add node as new root. */
-      f->min_root = ni;
-    }
-  else
-    {
-      /* Add node as sibling of current root. */
-      fheap_node_add_sibling (f, ri, ni);
-
-      /* New node may become new root. */
-      if (r->key > n->key)
-	f->min_root = ni;
-    }
-
-  fheap_validate (f);
-}
-
-always_inline u32
-fheap_node_remove_internal (fheap_t * f, u32 ni, u32 invalidate)
-{
-  fheap_node_t *n = vec_elt_at_index (f->nodes, ni);
-  u32 prev_ni = n->prev_sibling;
-  u32 next_ni = n->next_sibling;
-  u32 list_has_single_element = prev_ni == ni;
-  fheap_node_t *prev = fheap_get_node (f, prev_ni);
-  fheap_node_t *next = fheap_get_node (f, next_ni);
-  fheap_node_t *p = fheap_get_node (f, n->parent);
-
-  if (p)
-    {
-      ASSERT (p->rank > 0);
-      p->rank -= 1;
-      p->first_child = list_has_single_element ? ~0 : next_ni;
-    }
-
-  if (prev)
-    {
-      ASSERT (prev->next_sibling == ni);
-      prev->next_sibling = next_ni;
-    }
-  if (next)
-    {
-      ASSERT (next->prev_sibling == ni);
-      next->prev_sibling = prev_ni;
-    }
-
-  n->prev_sibling = n->next_sibling = ni;
-  n->parent = ~0;
-  n->is_valid = invalidate == 0;
-
-  return list_has_single_element ? ~0 : next_ni;
-}
-
-always_inline u32
-fheap_node_remove (fheap_t * f, u32 ni)
-{
-  return fheap_node_remove_internal (f, ni, /* invalidate */ 0);
-}
-
-always_inline u32
-fheap_node_remove_and_invalidate (fheap_t * f, u32 ni)
-{
-  return fheap_node_remove_internal (f, ni, /* invalidate */ 1);
-}
-
-static void
-fheap_link_root (fheap_t * f, u32 ni)
-{
-  fheap_node_t *n = vec_elt_at_index (f->nodes, ni);
-  fheap_node_t *r, *lo, *hi;
-  u32 ri, lo_i, hi_i, k;
-
-  while (1)
-    {
-      k = n->rank;
-      vec_validate_init_empty (f->root_list_by_rank, k, ~0);
-      ri = f->root_list_by_rank[k];
-      r = fheap_get_node (f, ri);
-      if (!r)
-	{
-	  f->root_list_by_rank[k] = ni;
-	  return;
-	}
-
-      f->root_list_by_rank[k] = ~0;
-
-      /* Sort n/r into lo/hi by their keys. */
-      lo = r, lo_i = ri;
-      hi = n, hi_i = ni;
-      if (hi->key < lo->key)
-	{
-	  u32 ti;
-	  fheap_node_t *tn;
-	  ti = lo_i, tn = lo;
-	  lo = hi, lo_i = hi_i;
-	  hi = tn, hi_i = ti;
-	}
-
-      /* Remove larger key. */
-      fheap_node_remove (f, hi_i);
-
-      /* Add larger key as child of smaller one. */
-      if (lo->first_child == ~0)
-	{
-	  hi->parent = lo_i;
-	  lo->first_child = hi_i;
-	  lo->rank = 1;
-	}
-      else
-	fheap_node_add_sibling (f, lo->first_child, hi_i);
-
-      /* Following Fredman & Trajan: "When making a root node X a child of another node in a linking step,
-         we unmark X". */
-      hi->is_marked = 0;
-
-      ni = lo_i;
-      n = lo;
-    }
-}
-
-u32
-fheap_del_min (fheap_t * f, u32 * min_key)
-{
-  fheap_node_t *r = fheap_get_root (f);
-  u32 to_delete_min_ri = f->min_root;
-  u32 ri, ni;
-
-  /* Empty heap? */
-  if (!r)
-    return ~0;
-
-  /* Root's children become siblings.  Call this step a; see below. */
-  if (r->first_child != ~0)
-    {
-      u32 ci, cni, rni;
-      fheap_node_t *c, *cn, *rn;
-
-      /* Splice child & root circular lists together. */
-      ci = r->first_child;
-      c = vec_elt_at_index (f->nodes, ci);
-
-      cni = c->next_sibling;
-      rni = r->next_sibling;
-      cn = vec_elt_at_index (f->nodes, cni);
-      rn = vec_elt_at_index (f->nodes, rni);
-
-      r->next_sibling = cni;
-      c->next_sibling = rni;
-      cn->prev_sibling = to_delete_min_ri;
-      rn->prev_sibling = ci;
-    }
-
-  /* Remove min root. */
-  ri = fheap_node_remove_and_invalidate (f, to_delete_min_ri);
-
-  /* Find new min root from among siblings including the ones we've just added. */
-  f->min_root = ~0;
-  if (ri != ~0)
-    {
-      u32 ri_last, ri_next, i, min_ds;
-
-      r = fheap_get_node (f, ri);
-      ri_last = r->prev_sibling;
-      while (1)
-	{
-	  /* Step a above can put children (with r->parent != ~0) on root list. */
-	  r->parent = ~0;
-
-	  ri_next = r->next_sibling;
-	  fheap_link_root (f, ri);
-	  if (ri == ri_last)
-	    break;
-	  ri = ri_next;
-	  r = fheap_get_node (f, ri);
-	}
-
-      min_ds = ~0;
-      vec_foreach_index (i, f->root_list_by_rank)
-      {
-	ni = f->root_list_by_rank[i];
-	if (ni == ~0)
-	  continue;
-	f->root_list_by_rank[i] = ~0;
-	r = fheap_get_node (f, ni);
-	if (r->key < min_ds)
-	  {
-	    f->min_root = ni;
-	    min_ds = r->key;
-	    ASSERT (r->parent == ~0);
-	  }
-      }
-    }
-
-  /* Return deleted min root. */
-  r = vec_elt_at_index (f->nodes, to_delete_min_ri);
-  if (min_key)
-    *min_key = r->key;
-
-  fheap_validate (f);
-
-  return to_delete_min_ri;
-}
-
-static void
-fheap_mark_parent (fheap_t * f, u32 pi)
-{
-  fheap_node_t *p = vec_elt_at_index (f->nodes, pi);
-
-  /* Parent is a root: do nothing. */
-  if (p->parent == ~0)
-    return;
-
-  /* If not marked, mark it. */
-  if (!p->is_marked)
-    {
-      p->is_marked = 1;
-      return;
-    }
-
-  /* Its a previously marked, non-root parent.
-     Cut edge to its parent and add to root list. */
-  fheap_node_remove (f, pi);
-  fheap_node_add_sibling (f, f->min_root, pi);
-
-  /* Unmark it since its now a root node. */
-  p->is_marked = 0;
-
-  /* "Cascading cuts": check parent. */
-  if (p->parent != ~0)
-    fheap_mark_parent (f, p->parent);
-}
-
-/* Set key to new smaller value. */
-void
-fheap_decrease_key (fheap_t * f, u32 ni, u32 new_key)
-{
-  fheap_node_t *n = vec_elt_at_index (f->nodes, ni);
-  fheap_node_t *r = fheap_get_root (f);
-
-  n->key = new_key;
-
-  if (n->parent != ~0)
-    {
-      fheap_mark_parent (f, n->parent);
-
-      /* Remove node and add to root list. */
-      fheap_node_remove (f, ni);
-      fheap_node_add_sibling (f, f->min_root, ni);
-    }
-
-  if (n->key < r->key)
-    f->min_root = ni;
-
-  fheap_validate (f);
-}
-
-void
-fheap_del (fheap_t * f, u32 ni)
-{
-  fheap_node_t *n;
-
-  n = vec_elt_at_index (f->nodes, ni);
-
-  if (n->parent == ~0)
-    {
-      ASSERT (ni == f->min_root);
-      fheap_del_min (f, 0);
-    }
-  else
-    {
-      u32 ci;
-
-      fheap_mark_parent (f, n->parent);
-
-      /* Add children to root list. */
-      foreach_fheap_node_sibling (f, ci, n->first_child, (
-							   {
-							   fheap_node_remove
-							   (f, ci);
-							   fheap_node_add_sibling
-							   (f, f->min_root,
-							    ci);}
-				  ));
-
-      fheap_node_remove_and_invalidate (f, ni);
-    }
-
-  fheap_validate (f);
-}
-
-/*
- * fd.io coding-style-patch-verification: ON
- *
- * Local Variables:
- * eval: (c-set-style "gnu")
- * End:
- */