Reorganize source tree to use single autotools instance

Change-Id: I7b51f88292e057c6443b12224486f2d0c9f8ae23
Signed-off-by: Damjan Marion <damarion@cisco.com>

1 files changed, 179 insertions, 0 deletions

diff --git a/src/vppinfra/mhash.h b/src/vppinfra/mhash.h
new file mode 100644
index 00000000000..102adf4eb83
--- /dev/null
+++ b/src/vppinfra/mhash.h
@@ -0,0 +1,179 @@
+/*
+ * 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.
+ */
+#ifndef included_clib_mhash_h
+#define included_clib_mhash_h
+
+/*
+  Copyright (c) 2010 Eliot Dresselhaus
+
+  Permission is hereby granted, free of charge, to any person obtaining
+  a copy of this software and associated documentation files (the
+  "Software"), to deal in the Software without restriction, including
+  without limitation the rights to use, copy, modify, merge, publish,
+  distribute, sublicense, and/or sell copies of the Software, and to
+  permit persons to whom the Software is furnished to do so, subject to
+  the following conditions:
+
+  The above copyright notice and this permission notice shall be
+  included in all copies or substantial portions of the Software.
+
+  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+  LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+  OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+  WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+*/
+
+#include <vppinfra/format.h>
+#include <vppinfra/hash.h>
+#include <vppinfra/heap.h>
+
+/* Hash table plus vector of keys. */
+typedef struct
+{
+  /* Vector or heap used to store keys.  Hash table stores keys as byte
+     offsets into this vector. */
+  u8 *key_vector_or_heap;
+
+  /* Byte offsets of free keys in vector (used to store free keys when
+     n_key_bytes > 1). */
+  u32 *key_vector_free_indices;
+
+  u8 **key_tmps;
+
+  /* Possibly fixed size of key.
+     0 means keys are vectors of u8's.
+     1 means keys are null terminated c strings. */
+#define MHASH_VEC_STRING_KEY 0
+#define MHASH_C_STRING_KEY 1
+  u32 n_key_bytes;
+
+  /* Seed value for Jenkins hash. */
+  u32 hash_seed;
+
+  /* Hash table mapping key -> value. */
+  uword *hash;
+
+  /* Format function for keys. */
+  format_function_t *format_key;
+} mhash_t;
+
+void mhash_init (mhash_t * h, uword n_value_bytes, uword n_key_bytes);
+
+always_inline void
+mhash_init_c_string (mhash_t * h, uword n_value_bytes)
+{
+  mhash_init (h, n_value_bytes, MHASH_C_STRING_KEY);
+}
+
+always_inline void
+mhash_init_vec_string (mhash_t * h, uword n_value_bytes)
+{
+  mhash_init (h, n_value_bytes, MHASH_VEC_STRING_KEY);
+}
+
+always_inline void *
+mhash_key_to_mem (mhash_t * h, uword key)
+{
+  if (key == ~0)
+    {
+      u8 *key_tmp;
+
+      int my_cpu = os_get_cpu_number ();
+      vec_validate (h->key_tmps, my_cpu);
+      key_tmp = h->key_tmps[my_cpu];
+      return key_tmp;
+    }
+  return vec_elt_at_index (h->key_vector_or_heap, key);
+}
+
+hash_pair_t *mhash_get_pair (mhash_t * h, const void *key);
+uword mhash_set_mem (mhash_t * h, void *key, uword * new_value,
+		     uword * old_value);
+uword mhash_unset (mhash_t * h, void *key, uword * old_value);
+
+always_inline uword *
+mhash_get (mhash_t * h, const void *key)
+{
+  hash_pair_t *p = mhash_get_pair (h, key);
+  return p ? &p->value[0] : 0;
+}
+
+always_inline uword
+mhash_set (mhash_t * h, void *key, uword new_value, uword * old_value)
+{
+  return mhash_set_mem (h, key, &new_value, old_value);
+}
+
+always_inline uword
+mhash_unset_key (mhash_t * h, uword key, uword * old_value)
+{
+  void *k = mhash_key_to_mem (h, key);
+  return mhash_unset (h, k, old_value);
+}
+
+always_inline uword
+mhash_value_bytes (mhash_t * m)
+{
+  hash_t *h = hash_header (m->hash);
+  return hash_value_bytes (h);
+}
+
+always_inline uword
+mhash_elts (mhash_t * m)
+{
+  return hash_elts (m->hash);
+}
+
+always_inline uword
+mhash_key_vector_is_heap (mhash_t * h)
+{
+  return h->n_key_bytes <= 1;
+}
+
+always_inline void
+mhash_free (mhash_t * h)
+{
+  if (mhash_key_vector_is_heap (h))
+    heap_free (h->key_vector_or_heap);
+  else
+    vec_free (h->key_vector_or_heap);
+  vec_free (h->key_vector_free_indices);
+  hash_free (h->hash);
+}
+
+#define mhash_foreach(k,v,mh,body)				\
+do {								\
+  hash_pair_t * _mhash_foreach_p;				\
+  hash_foreach_pair (_mhash_foreach_p, (mh)->hash, ({		\
+    (k) = mhash_key_to_mem ((mh), _mhash_foreach_p->key);	\
+    (v) = &_mhash_foreach_p->value[0];				\
+    body;							\
+  }));								\
+} while (0)
+
+format_function_t format_mhash_key;
+
+#endif /* included_clib_mhash_h */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */