gprofng: a new GNU profiler

top-level
	* Makefile.def: Add gprofng module.
	* configure.ac: Add --enable-gprofng option.
	* src-release.sh: Add gprofng.
	* Makefile.in: Regenerate.
	* configure: Regenerate.
	* gprofng: New directory.

binutils
	* MAINTAINERS: Add gprofng maintainer.
	* README-how-to-make-a-release: Add gprofng.

include.
	* collectorAPI.h: New file.
	* libcollector.h: New file.
	* libfcollector.h: New file.

gprofng/src/DbeCacheMap.h

@@ -0,0 +1,109 @@
+/* Copyright (C) 2021 Free Software Foundation, Inc.
+   Contributed by Oracle.
+
+   This file is part of GNU Binutils.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, 51 Franklin Street - Fifth Floor, Boston,
+   MA 02110-1301, USA.  */
+
+/*
+ *	Dbe Cache Map implementation.
+ *
+ *    Simple Cache Map makes the following assumptions:
+ *    - Cache Map is used for very fast but not guaranteed mapping;
+ *    - No Relations can be used;
+ *    - all objects used as keys or values has to be managed
+ *      outside CacheMap (f.e. deletion);
+ */
+
+#ifndef _DbeCacheMap_h
+#define _DbeCacheMap_h
+
+#include <Map.h>
+
+template <typename Key_t, class ITEM>
+class DbeCacheMap : public Map<Key_t, ITEM *>
+{
+public:
+
+  DbeCacheMap (int _size = DefaultSize)
+  { // _size should be 2 ** N
+    size = _size;
+    table = new DbeCache_T[size];
+    memset (table, 0, size * sizeof (DbeCache_T));
+  };
+
+  ~DbeCacheMap ()
+  {
+    delete[] table;
+  };
+
+  void
+  put (Key_t key, ITEM *val)
+  {
+    int ind = get_hash (key);
+    table[ind].key = key;
+    table[ind].value = val;
+  };
+
+  ITEM *
+  get (Key_t key)
+  {
+    int ind = get_hash (key);
+    if (table[ind].key == key)
+      return table[ind].value;
+    return (ITEM *) NULL;
+  };
+
+  ITEM *
+  remove (Key_t key)
+  {
+    int ind = get_hash (key);
+    ITEM *v = table[ind].value;
+    table[ind].value = (ITEM *) NULL;
+    return v;
+  };
+
+  ITEM *
+  get (Key_t /* key */, typename Map<Key_t, ITEM *>::Relation /* rel */)
+  {
+    return (ITEM *) NULL;
+  };
+
+private:
+
+  enum
+  {
+    DefaultSize     = (1 << 13)
+  };
+
+  typedef struct DbeCache_S
+  {
+    Key_t key;
+    ITEM *value;
+  } DbeCache_T;
+  DbeCache_T *table;
+  int size;
+
+  int
+  get_hash (Key_t key)
+  {
+    unsigned long long h = (unsigned long long) key;
+    h ^= (h >> 20) ^ (h >> 12);
+    return (h ^ (h >> 7) ^ (h >> 4)) & (size - 1);
+  }
+};
+
+#endif