1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/node/nsc-sysctl.cc Wed Jul 15 18:46:14 2009 +0200
1.3 @@ -0,0 +1,154 @@
1.4 +/* -*- Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil; -*- */
1.5 +/*
1.6 + * This program is free software; you can redistribute it and/or modify
1.7 + * it under the terms of the GNU General Public License version 2 as
1.8 + * published by the Free Software Foundation;
1.9 + *
1.10 + * This program is distributed in the hope that it will be useful,
1.11 + * but WITHOUT ANY WARRANTY; without even the implied warranty of
1.12 + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
1.13 + * GNU General Public License for more details.
1.14 + *
1.15 + * You should have received a copy of the GNU General Public License
1.16 + * along with this program; if not, write to the Free Software
1.17 + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
1.18 + *
1.19 + * Author: Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
1.20 + */
1.21 +
1.22 +#include "ns3/string.h"
1.23 +#include "nsc-sysctl.h"
1.24 +
1.25 +#include "sim_interface.h"
1.26 +
1.27 +namespace ns3 {
1.28 +
1.29 +class NscStackStringAccessor : public AttributeAccessor
1.30 +{
1.31 + public:
1.32 + NscStackStringAccessor (std::string name) : m_name (name) {}
1.33 +
1.34 + virtual bool Set (ObjectBase * object, const AttributeValue &val) const;
1.35 + virtual bool Get (const ObjectBase * object, AttributeValue &val) const;
1.36 + virtual bool HasGetter (void) const;
1.37 + virtual bool HasSetter (void) const;
1.38 + private:
1.39 + std::string m_name;
1.40 +};
1.41 +
1.42 +bool NscStackStringAccessor::HasGetter(void) const
1.43 +{
1.44 + return true;
1.45 +}
1.46 +
1.47 +bool NscStackStringAccessor::HasSetter(void) const
1.48 +{
1.49 + return true;
1.50 +}
1.51 +
1.52 +
1.53 +bool NscStackStringAccessor::Set (ObjectBase * object, const AttributeValue & val) const
1.54 +{
1.55 + const StringValue *value = dynamic_cast<const StringValue *> (&val);
1.56 + if (value == 0)
1.57 + {
1.58 + return false;
1.59 + }
1.60 + Ns3NscStack *obj = dynamic_cast<Ns3NscStack *> (object);
1.61 + if (obj == 0)
1.62 + {
1.63 + return false;
1.64 + }
1.65 + obj->Set (m_name, value->Get ());
1.66 + return true;
1.67 +}
1.68 +
1.69 +bool NscStackStringAccessor::Get (const ObjectBase * object, AttributeValue &val) const
1.70 +{
1.71 + StringValue *value = dynamic_cast<StringValue *> (&val);
1.72 + if (value == 0)
1.73 + {
1.74 + return false;
1.75 + }
1.76 + const Ns3NscStack *obj = dynamic_cast<const Ns3NscStack *> (object);
1.77 + if (obj == 0)
1.78 + {
1.79 + return false;
1.80 + }
1.81 + value->Set (obj->Get (m_name));
1.82 + return true;
1.83 +}
1.84 +
1.85 +
1.86 +TypeId
1.87 +Ns3NscStack::GetInstanceTypeId (void) const
1.88 +{
1.89 + if (m_stack == 0)
1.90 + {
1.91 + // if we have no stack, we are a normal NscStack without any attributes.
1.92 + return GetTypeId ();
1.93 + }
1.94 + std::string name = "ns3::Ns3NscStack<";
1.95 + name += m_stack->get_name ();
1.96 + name += ">";
1.97 + TypeId tid;
1.98 + if (TypeId::LookupByNameFailSafe (name, &tid))
1.99 + {
1.100 + // if the relevant TypeId has already been registered, no need to do it again.
1.101 + return tid;
1.102 + }
1.103 + else
1.104 + {
1.105 + // Now, we register a new TypeId for this stack which will look
1.106 + // like a subclass of the Ns3NscStack. The class Ns3NscStack is effectively
1.107 + // mutating into a subclass of itself from the point of view of the TypeId
1.108 + // system _here_
1.109 + tid = TypeId (name.c_str ());
1.110 + tid.SetParent<Ns3NscStack> ();
1.111 + char buf[256];
1.112 + for (int i=0; m_stack->sysctl_getnum(i, buf, sizeof(buf)) > 0 ;i++)
1.113 + {
1.114 + char value[256];
1.115 + if (m_stack->sysctl_get (buf, value, sizeof(value)) > 0)
1.116 + {
1.117 + tid.AddAttribute (buf, "Help text",
1.118 + StringValue (value),
1.119 + Create<NscStackStringAccessor> (buf),
1.120 + MakeStringChecker ());
1.121 + }
1.122 + }
1.123 + return tid;
1.124 + }
1.125 +}
1.126 +
1.127 +std::string
1.128 +Ns3NscStack::Get (std::string name) const
1.129 +{
1.130 + char buf[512];
1.131 + if (m_stack->sysctl_get (name.c_str (), buf, sizeof(buf)) <= 0)
1.132 + { // name.c_str () is not a valid sysctl name, or internal NSC error (eg. error converting value)
1.133 + return NULL;
1.134 + }
1.135 + return std::string(buf);
1.136 +}
1.137 +
1.138 +void
1.139 +Ns3NscStack::Set (std::string name, std::string value)
1.140 +{
1.141 + int ret = m_stack->sysctl_set (name.c_str (), value.c_str ());
1.142 + if (ret < 0)
1.143 + {
1.144 + NS_FATAL_ERROR ("setting " << name << " to " << value << "failed (retval " << ret << ")");
1.145 + }
1.146 +}
1.147 +
1.148 +TypeId
1.149 +Ns3NscStack::Ns3NscStack::GetTypeId (void)
1.150 +{
1.151 + static TypeId tid = TypeId ("ns3::Ns3NscStack")
1.152 + .SetParent<Object> ()
1.153 + ;
1.154 + return tid;
1.155 +}
1.156 +
1.157 +} // namespace ns3