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Fix serialization of the EtherLink object

Browse source 
dev/etherlink.cc:
    - The EtherLink::Link object is no lonver serializable, so it is now
    necessary to prepend the object's name (as determined by the parent)
    to all parameters.
    - Fix the serialization of the LinkDelayEvent so it actually works
    - Rename some variables to make serialization simpler
dev/etherlink.hh:
    - Make the EtherLink::Link object *not* derive from serializeable.
    Instead, the serialize function will take a base name from
    the parent EtherLink object and prepend that base name to each of
    its variable names when serializing.  This is similar to the
    PacketData and PacketFifo classes.
    - Make the EtherLink::Link object keep a pointer to its parent and its
    link number so the LinkDelayEvent can be properly serialized.
    - Rename some variables to make serialization simpler.

--HG--
extra : convert_revision : e5aa54cd9e07b5e033989809100e1640abfb8bed
This commit is contained in:
Nathan Binkert 2005-03-08 12:47:55 -05:00
parent 47dec0f411
commit b9c847563d
2 changed files with 68 additions and 58 deletions
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98
dev/etherlink.cc
View file

@ -47,32 +47,32 @@
using namespace std;
EtherLink::EtherLink(const string &name, EtherInt *i1, EtherInt *i2,
EtherLink::EtherLink(const string &name, EtherInt *peer0, EtherInt *peer1,
Tick speed, Tick dly, EtherDump *dump)
: SimObject(name)
{
double rate = ((double)ticksPerSecond * 8.0) / (double)speed;
Tick delay = US2Ticks(dly);
link1 = new Link(name + ".link1", rate, delay, dump);
link2 = new Link(name + ".link2", rate, delay, dump);
link[0] = new Link(name + ".link0", this, 0, rate, delay, dump);
link[1] = new Link(name + ".link1", this, 1, rate, delay, dump);
int1 = new Interface(name + ".int1", link1, link2);
int2 = new Interface(name + ".int2", link2, link1);
interface[0] = new Interface(name + ".int0", link[0], link[1]);
interface[1] = new Interface(name + ".int1", link[1], link[0]);
int1->setPeer(i1);
i1->setPeer(int1);
int2->setPeer(i2);
i2->setPeer(int2);
interface[0]->setPeer(peer0);
peer0->setPeer(interface[0]);
interface[1]->setPeer(peer1);
peer1->setPeer(interface[1]);
}
EtherLink::~EtherLink()
{
delete link1;
delete link2;
delete link[0];
delete link[1];
delete int1;
delete int2;
delete interface[0];
delete interface[1];
}
EtherLink::Interface::Interface(const string &name, Link *tx, Link *rx)
@ -82,26 +82,25 @@ EtherLink::Interface::Interface(const string &name, Link *tx, Link *rx)
rx->setRxInt(this);
}
EtherLink::Link::Link(const string &name, double rate, Tick delay,
EtherDump *d)
: objName(name), txint(NULL), rxint(NULL), ticksPerByte(rate),
linkDelay(delay), dump(d), doneEvent(this)
{}
EtherLink::Link::Link(const string &name, EtherLink *p, int num,
double rate, Tick delay, EtherDump *d)
: objName(name), parent(p), number(num), txint(NULL), rxint(NULL),
ticksPerByte(rate), linkDelay(delay), dump(d),
doneEvent(this)
{ }
void
EtherLink::serialize(ostream &os)
{
nameOut(os, name() + ".link1");
link1->serialize(os);
nameOut(os, name() + ".link2");
link2->serialize(os);
link[0]->serialize("link0", os);
link[1]->serialize("link1", os);
}
void
EtherLink::unserialize(Checkpoint *cp, const string &section)
{
link1->unserialize(cp, section + ".link1");
link2->unserialize(cp, section + ".link2");
link[0]->unserialize("link0", cp, section);
link[1]->unserialize("link1", cp, section);
}
void
@ -118,10 +117,9 @@ class LinkDelayEvent : public Event
EtherLink::Link *link;
PacketPtr packet;
// non-scheduling version for createForUnserialize()
LinkDelayEvent(EtherLink::Link *link);
public:
// non-scheduling version for createForUnserialize()
LinkDelayEvent();
LinkDelayEvent(EtherLink::Link *link, PacketPtr pkt, Tick when);
void process();
@ -132,7 +130,6 @@ class LinkDelayEvent : public Event
const string &section);
};
void
EtherLink::Link::txDone()
{
@ -173,43 +170,44 @@ EtherLink::Link::transmit(PacketPtr pkt)
}
void
EtherLink::Link::serialize(ostream &os)
EtherLink::Link::serialize(const string &base, ostream &os)
{
bool packet_exists = packet;
SERIALIZE_SCALAR(packet_exists);
paramOut(os, base + ".packet_exists", packet_exists);
if (packet_exists)
packet->serialize(base + ".packet", os);
bool event_scheduled = doneEvent.scheduled();
SERIALIZE_SCALAR(event_scheduled);
paramOut(os, base + ".event_scheuled", event_scheduled);
if (event_scheduled) {
Tick event_time = doneEvent.when();
SERIALIZE_SCALAR(event_time);
paramOut(os, base + ".event_time", event_time);
}
if (packet_exists)
packet->serialize("packet", os);
}
void
EtherLink::Link::unserialize(Checkpoint *cp, const string &section)
EtherLink::Link::unserialize(const string &base, Checkpoint *cp,
const string &section)
{
bool packet_exists;
UNSERIALIZE_SCALAR(packet_exists);
paramIn(cp, section, base + ".packet_exists", packet_exists);
if (packet_exists) {
packet = new PacketData(16384);
packet->unserialize("packet", cp, section);
packet->unserialize(base + ".packet", cp, section);
}
bool event_scheduled;
UNSERIALIZE_SCALAR(event_scheduled);
paramIn(cp, section, base + ".event_scheduled", event_scheduled);
if (event_scheduled) {
Tick event_time;
UNSERIALIZE_SCALAR(event_time);
paramIn(cp, section, base + ".event_time", event_time);
doneEvent.schedule(event_time);
}
}
LinkDelayEvent::LinkDelayEvent(EtherLink::Link *l)
: Event(&mainEventQueue), link(l)
LinkDelayEvent::LinkDelayEvent()
: Event(&mainEventQueue), link(NULL)
{
setFlags(AutoSerialize);
setFlags(AutoDelete);
@ -234,7 +232,11 @@ LinkDelayEvent::serialize(ostream &os)
{
paramOut(os, "type", string("LinkDelayEvent"));
Event::serialize(os);
SERIALIZE_OBJPTR(link);
EtherLink *parent = link->parent;
bool number = link->number;
SERIALIZE_OBJPTR(parent);
SERIALIZE_SCALAR(number);
packet->serialize("packet", os);
}
@ -244,6 +246,14 @@ void
LinkDelayEvent::unserialize(Checkpoint *cp, const string &section)
{
Event::unserialize(cp, section);
EtherLink *parent;
bool number;
UNSERIALIZE_OBJPTR(parent);
UNSERIALIZE_SCALAR(number);
link = parent->link[number];
packet = new PacketData(16384);
packet->unserialize("packet", cp, section);
}
@ -252,9 +262,7 @@ LinkDelayEvent::unserialize(Checkpoint *cp, const string &section)
Serializable *
LinkDelayEvent::createForUnserialize(Checkpoint *cp, const string &section)
{
EtherLink::Link *link;
UNSERIALIZE_OBJPTR(link);
return new LinkDelayEvent(link);
return new LinkDelayEvent();
}
REGISTER_SERIALIZEABLE("LinkDelayEvent", LinkDelayEvent)

28
dev/etherlink.hh
View file

@ -40,7 +40,7 @@
#include "sim/sim_object.hh"
class EtherDump;
class Checkpoint;
/*
* Model for a fixed bandwidth full duplex ethernet link
*/
@ -53,10 +53,14 @@ class EtherLink : public SimObject
/*
* Model for a single uni-directional link
*/
class Link : public Serializable {
class Link
{
protected:
std::string objName;
EtherLink *parent;
int number;
Interface *txint;
Interface *rxint;
@ -78,11 +82,11 @@ class EtherLink : public SimObject
void txComplete(PacketPtr packet);
public:
Link(const std::string &name, double rate, Tick delay,
EtherDump *dump);
Link(const std::string &name, EtherLink *p, int num,
double rate, Tick delay, EtherDump *dump);
~Link() {}
virtual const std::string name() const { return objName; }
const std::string name() const { return objName; }
bool busy() const { return (bool)packet; }
bool transmit(PacketPtr packet);
@ -90,8 +94,9 @@ class EtherLink : public SimObject
void setTxInt(Interface *i) { assert(!txint); txint = i; }
void setRxInt(Interface *i) { assert(!rxint); rxint = i; }
virtual void serialize(std::ostream &os);
virtual void unserialize(Checkpoint *cp, const std::string &section);
void serialize(const std::string &base, std::ostream &os);
void unserialize(const std::string &base, Checkpoint *cp,
const std::string &section);
};
/*
@ -108,14 +113,11 @@ class EtherLink : public SimObject
void sendDone() { peer->sendDone(); }
};
Link *link1;
Link *link2;
EtherInt *int1;
EtherInt *int2;
Link *link[2];
EtherInt *interface[2];
public:
EtherLink(const std::string &name, EtherInt *i1, EtherInt *i2,
EtherLink(const std::string &name, EtherInt *peer0, EtherInt *peer1,
Tick speed, Tick delay, EtherDump *dump);
virtual ~EtherLink();