A Discrete-Event Network Simulator
API
hash.cc
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1 /*
2  * Copyright (c) 2012 Lawrence Livermore National Laboratory
3  *
4  * This program is free software; you can redistribute it and/or modify
5  * it under the terms of the GNU General Public License version 2 as
6  * published by the Free Software Foundation;
7  *
8  * This program is distributed in the hope that it will be useful,
9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11  * GNU General Public License for more details.
12  *
13  * You should have received a copy of the GNU General Public License
14  * along with this program; if not, write to the Free Software
15  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
16  *
17  * Author: Peter D. Barnes, Jr. <pdbarnes@llnl.gov>
18  */
19 
20 #include "hash.h"
21 
22 #include "log.h"
23 
30 namespace ns3
31 {
32 
33 NS_LOG_COMPONENT_DEFINE("Hash");
34 
35 Hasher&
36 GetStaticHash()
37 {
38  static Hasher g_hasher = Hasher();
39  g_hasher.clear();
40  return g_hasher;
41 }
42 
43 Hasher::Hasher()
44 {
45  m_impl = Create<Hash::Function::Murmur3>();
46  NS_ASSERT(m_impl);
47 }
48 
49 Hasher::Hasher(Ptr<Hash::Implementation> hp)
50  : m_impl(hp)
51 {
52  NS_ASSERT(m_impl);
53 }
54 
55 Hasher&
56 Hasher::clear()
57 {
58  m_impl->clear();
59  return *this;
60 }
61 
62 } // namespace ns3
ns3::Hasher
Generic Hash function interface.
Definition: hash.h:87
ns3::Hasher::Hasher
Hasher()
Constructor using the default implementation.
Definition: hash.cc:43
ns3::Hasher::m_impl
Ptr< Hash::Implementation > m_impl
Hash implementation.
Definition: hash.h:175
ns3::Hasher::clear
Hasher & clear()
Restore initial state.
Definition: hash.cc:56
ns3::Ptr
Smart pointer class similar to boost::intrusive_ptr.
Definition: ptr.h:77
NS_ASSERT
#define NS_ASSERT(condition)
At runtime, in debugging builds, if this condition is not true, the program prints the source file,...
Definition: assert.h:66
NS_LOG_COMPONENT_DEFINE
#define NS_LOG_COMPONENT_DEFINE(name)
Define a Log component with a specific name.
Definition: log.h:202
hash.h
ns3::Hasher, ns3::Hash32() and ns3::Hash64() function declarations.
log.h
Debug message logging.
ns3
Every class exported by the ns3 library is enclosed in the ns3 namespace.
ns3::GetStaticHash
Hasher & GetStaticHash()
Get a reference to the static global hasher at g_hasher.
Definition: hash.cc:36