24#include "ns3/command-line.h"
25#include "ns3/packet-metadata.h"
26#include "ns3/packet.h"
27#include "ns3/system-wall-clock-ms.h"
59 void Print(std::ostream& os)
const override;
90 std::ostringstream oss;
91 oss <<
"ns3::BenchHeader<" << N <<
">";
101 .SetGroupName(
"Utils")
102 .HideFromDocumentation()
140 for (
int i = 0; i < N; i++)
142 if (
start.ReadU8() != N)
161 std::ostringstream oss;
162 oss <<
"anon::BenchTag<" << N <<
">";
174 .SetGroupName(
"Utils")
175 .HideFromDocumentation()
206 void Print(std::ostream& os)
const override
248 NS_ASSERT_MSG(ipv4.
IsOk() ==
false,
"IsOk() should be false before deserialization");
258 NS_ASSERT_MSG(ipv4.
IsOk() ==
true,
"IsOk() should be true after deserialization");
359 uint64_t deltaMs = time.
End();
367 for (
uint32_t i = 0; i < minIterations; i++)
370 minDelay =
std::min(minDelay, delay);
375 std::cout << ps <<
" packets/s"
376 <<
" (" << minDelay <<
" ms elapsed)\t" << name << std::endl;
380main(
int argc,
char* argv[])
384 bool enablePrinting =
false;
387 cmd.Usage(
"Benchmark Packet class");
388 cmd.AddValue(
"n",
"number of iterations", n);
389 cmd.AddValue(
"min-iterations",
390 "number of subiterations to minimize iteration time over",
392 cmd.AddValue(
"enable-printing",
"enable packet printing", enablePrinting);
393 cmd.Parse(argc, argv);
397 std::cerr <<
"Error-- number of packets must be specified "
398 <<
"by command-line argument --n=(number of packets)" << std::endl;
401 std::cout <<
"Running bench-packets with n=" << n << std::endl;
402 std::cout <<
"All tests begin by adding UDP and IPv4 headers." << std::endl;
404 runBench(&
benchA, n, minIterations,
"Copy packet, remove headers");
407 runBench(&
benchD, n, minIterations,
"Intermixed add/remove headers and tags");
static void benchB(uint32_t n)
static void runBench(void(*bench)(uint32_t), uint32_t n, uint32_t minIterations, const char *name)
static uint64_t runBenchOneIteration(void(*bench)(uint32_t), uint32_t n)
static void benchC(uint32_t n)
static void benchD(uint32_t n)
static void benchFragment(uint32_t n)
static void benchByteTags(uint32_t n)
static void benchA(uint32_t n)
static void C1(Ptr< Packet > p)
static void C2(Ptr< Packet > p)
BenchTag class used for benchmarking packet serialization/deserialization.
void Serialize(TagBuffer buf) const override
void Deserialize(TagBuffer buf) override
static TypeId GetTypeId()
Register this type.
uint32_t GetSerializedSize() const override
void Print(std::ostream &os) const override
TypeId GetInstanceTypeId() const override
Get the most derived TypeId for this Object.
static std::string GetName()
Get the bench tag name.
iterator in a Buffer instance
Parse command-line arguments.
bool RemovePacketTag(Tag &tag)
Remove a packet tag.
uint32_t RemoveHeader(Header &header)
Deserialize and remove the header from the internal buffer.
void AddAtEnd(Ptr< const Packet > packet)
Concatenate the input packet at the end of the current packet.
void AddHeader(const Header &header)
Add header to this packet.
Ptr< Packet > Copy() const
performs a COW copy of the packet.
void AddPacketTag(const Tag &tag) const
Add a packet tag.
Ptr< Packet > CreateFragment(uint32_t start, uint32_t length) const
Create a new packet which contains a fragment of the original packet.
void AddByteTag(const Tag &tag) const
Tag each byte included in this packet with a new byte tag.
Measure elapsed wall clock time in milliseconds.
int64_t End()
Stop measuring the time since Start() was called.
void Start()
Start a measure.
TAG_BUFFER_INLINE void WriteU8(uint8_t v)
TAG_BUFFER_INLINE uint8_t ReadU8()
tag a set of bytes in a packet
a unique identifier for an interface.
TypeId SetParent(TypeId tid)
Set the parent TypeId.
#define NS_ASSERT(condition)
At runtime, in debugging builds, if this condition is not true, the program prints the source file,...
#define NS_ASSERT_MSG(condition, message)
At runtime, in debugging builds, if this condition is not true, the program prints the message to out...
Every class exported by the ns3 library is enclosed in the ns3 namespace.