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[Inet] Test EndPoint statistics
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#### Problem

Fixes project-chip#12378 Use the Impl's underlying ObjectPool statistics

#### Change overview

Decided to fix the existing method, with a deletion wrapper.

Added stats macros for unit testing.

#### Testing

Added unit test assertions.
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@kpschoedel
kpschoedel committed Dec 9, 2021
1 parent 5bb8377 commit 855f51e
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Showing 3 changed files with 40 additions and 4 deletions.
11 changes: 8 additions & 3 deletions src/inet/InetLayer.h
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Original file line number Diff line number Diff line change
Expand Up @@ -89,13 +89,18 @@ class EndPointManager
return CHIP_ERROR_ENDPOINT_POOL_FULL;
}

// TODO: Use the Impl's underlying ObjectPool statistics
SYSTEM_STATS_INCREMENT(EndPointProperties<EndPointType>::SystemStatsKey);
return CHIP_NO_ERROR;
}

void DeleteEndPoint(EndPoint * endPoint)
{
SYSTEM_STATS_DECREMENT(EndPointProperties<EndPointType>::SystemStatsKey);
ReleaseEndPoint(endPoint);
}

virtual EndPoint * CreateEndPoint() = 0;
virtual void DeleteEndPoint(EndPoint * endPoint) = 0;
virtual void ReleaseEndPoint(EndPoint * endPoint) = 0;
virtual Loop ForEachEndPoint(const EndPointVisitor visitor) = 0;

private:
Expand All @@ -114,7 +119,7 @@ class EndPointManagerImplPool : public EndPointManager<typename EndPointImpl::En
~EndPointManagerImplPool() { VerifyOrDie(sEndPointPool.Allocated() == 0); }

EndPoint * CreateEndPoint() override { return sEndPointPool.CreateObject(*this); }
void DeleteEndPoint(EndPoint * endPoint) override { sEndPointPool.ReleaseObject(static_cast<EndPointImpl *>(endPoint)); }
void ReleaseEndPoint(EndPoint * endPoint) override { sEndPointPool.ReleaseObject(static_cast<EndPointImpl *>(endPoint)); }
Loop ForEachEndPoint(const typename Manager::EndPointVisitor visitor) override
{
return sEndPointPool.ForEachActiveObject([&](EndPoint * endPoint) -> Loop { return visitor(endPoint); });
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26 changes: 25 additions & 1 deletion src/inet/tests/TestInetEndPoint.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -255,11 +255,15 @@ static void TestInetEndPointInternal(nlTestSuite * inSuite, void * inContext)
PacketBufferHandle buf = PacketBufferHandle::New(PacketBuffer::kMaxSize);

// init all the EndPoints
SYSTEM_STATS_RESET(System::Stats::kInetLayer_NumUDPEps);
err = gUDP.NewEndPoint(&testUDPEP);
NL_TEST_ASSERT(inSuite, err == CHIP_NO_ERROR);
NL_TEST_ASSERT(inSuite, SYSTEM_STATS_TEST_IN_USE(System::Stats::kInetLayer_NumUDPEps, 1));

SYSTEM_STATS_RESET(System::Stats::kInetLayer_NumTCPEps);
err = gTCP.NewEndPoint(&testTCPEP1);
NL_TEST_ASSERT(inSuite, err == CHIP_NO_ERROR);
NL_TEST_ASSERT(inSuite, SYSTEM_STATS_TEST_IN_USE(System::Stats::kInetLayer_NumUDPEps, 1));

err = InterfaceId::Null().GetLinkLocalAddr(&addr);
NL_TEST_ASSERT(inSuite, err == CHIP_NO_ERROR);
Expand Down Expand Up @@ -294,16 +298,20 @@ static void TestInetEndPointInternal(nlTestSuite * inSuite, void * inContext)
err = testUDPEP->BindInterface(IPAddressType::kIPv6, intId);
NL_TEST_ASSERT(inSuite, err == CHIP_ERROR_INCORRECT_STATE);
testUDPEP->Free();
NL_TEST_ASSERT(inSuite, SYSTEM_STATS_TEST_IN_USE(System::Stats::kInetLayer_NumUDPEps, 0));
NL_TEST_ASSERT(inSuite, SYSTEM_STATS_TEST_HIGH_WATER_MARK(System::Stats::kInetLayer_NumUDPEps, 1));

err = gUDP.NewEndPoint(&testUDPEP);
NL_TEST_ASSERT(inSuite, err == CHIP_NO_ERROR);
NL_TEST_ASSERT(inSuite, SYSTEM_STATS_TEST_IN_USE(System::Stats::kInetLayer_NumUDPEps, 1));
#if INET_CONFIG_ENABLE_IPV4
err = testUDPEP->Bind(IPAddressType::kIPv4, addr_v4, 3000, intId);
NL_TEST_ASSERT(inSuite, err != CHIP_NO_ERROR);
buf = PacketBufferHandle::New(PacketBuffer::kMaxSize);
err = testUDPEP->SendTo(addr_v4, 3000, std::move(buf));
testUDPEP->Free();
#endif // INET_CONFIG_ENABLE_IPV4
testUDPEP->Free();
NL_TEST_ASSERT(inSuite, SYSTEM_STATS_TEST_IN_USE(System::Stats::kInetLayer_NumUDPEps, 0));

// TcpEndPoint special cases to cover the error branch
err = testTCPEP1->GetPeerInfo(nullptr, nullptr);
Expand Down Expand Up @@ -342,6 +350,8 @@ static void TestInetEndPointInternal(nlTestSuite * inSuite, void * inContext)
#endif // INET_CONFIG_ENABLE_IPV4

testTCPEP1->Free();
NL_TEST_ASSERT(inSuite, SYSTEM_STATS_TEST_IN_USE(System::Stats::kInetLayer_NumTCPEps, 0));
NL_TEST_ASSERT(inSuite, SYSTEM_STATS_TEST_HIGH_WATER_MARK(System::Stats::kInetLayer_NumTCPEps, 1));
}

#if !CHIP_SYSTEM_CONFIG_POOL_USE_HEAP
Expand All @@ -353,17 +363,27 @@ static void TestInetEndPointLimit(nlTestSuite * inSuite, void * inContext)

CHIP_ERROR err = CHIP_NO_ERROR;

int udpCount = 0;
SYSTEM_STATS_RESET(System::Stats::kInetLayer_NumUDPEps);
for (int i = INET_CONFIG_NUM_UDP_ENDPOINTS; i >= 0; --i)
{
err = gUDP.NewEndPoint(&testUDPEP[i]);
NL_TEST_ASSERT(inSuite, err == (i ? CHIP_NO_ERROR : CHIP_ERROR_ENDPOINT_POOL_FULL));
NL_TEST_ASSERT(inSuite, SYSTEM_STATS_TEST_IN_USE(System::Stats::kInetLayer_NumUDPEps, ++udpCount));
}
const int udpHighWaterMark = udpCount;
NL_TEST_ASSERT(inSuite, SYSTEM_STATS_TEST_HIGH_WATER_MARK(System::Stats::kInetLayer_NumUDPEps, udpHighWaterMark));

int tcpCount = 0;
SYSTEM_STATS_RESET(System::Stats::kInetLayer_NumTCPEps);
for (int i = INET_CONFIG_NUM_TCP_ENDPOINTS; i >= 0; --i)
{
err = gTCP.NewEndPoint(&testTCPEP[i]);
NL_TEST_ASSERT(inSuite, err == (i ? CHIP_NO_ERROR : CHIP_ERROR_ENDPOINT_POOL_FULL));
NL_TEST_ASSERT(inSuite, SYSTEM_STATS_TEST_IN_USE(System::Stats::kInetLayer_NumTCPEps, ++tcpCount));
}
const int tcpHighWaterMark = tcpCount;
NL_TEST_ASSERT(inSuite, SYSTEM_STATS_TEST_HIGH_WATER_MARK(System::Stats::kInetLayer_NumTCPEps, tcpHighWaterMark));

#if CHIP_SYSTEM_CONFIG_NUM_TIMERS
// Verify same aComplete and aAppState args do not exhaust timer pool
Expand All @@ -385,17 +405,21 @@ static void TestInetEndPointLimit(nlTestSuite * inSuite, void * inContext)
if (testUDPEP[i] != nullptr)
{
testUDPEP[i]->Free();
NL_TEST_ASSERT(inSuite, SYSTEM_STATS_TEST_IN_USE(System::Stats::kInetLayer_NumTCPEps, --udpCount));
}
}
NL_TEST_ASSERT(inSuite, SYSTEM_STATS_TEST_HIGH_WATER_MARK(System::Stats::kInetLayer_NumUDPEps, udpHighWaterMark));

// Release TCP endpoints
for (int i = 0; i <= INET_CONFIG_NUM_TCP_ENDPOINTS; i++)
{
if (testTCPEP[i] != nullptr)
{
testTCPEP[i]->Free();
NL_TEST_ASSERT(inSuite, SYSTEM_STATS_TEST_IN_USE(System::Stats::kInetLayer_NumTCPEps, --tcpCount));
}
}
NL_TEST_ASSERT(inSuite, SYSTEM_STATS_TEST_HIGH_WATER_MARK(System::Stats::kInetLayer_NumTCPEps, tcpHighWaterMark));

ShutdownNetwork();
ShutdownSystemLayer();
Expand Down
7 changes: 7 additions & 0 deletions src/system/SystemStats.h
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Original file line number Diff line number Diff line change
Expand Up @@ -153,6 +153,10 @@ const Label * GetStrings();
#define SYSTEM_STATS_UPDATE_LWIP_PBUF_COUNTS()
#endif // CHIP_SYSTEM_CONFIG_USE_LWIP && LWIP_STATS && MEMP_STATS

// Additional macros for testing.
#define SYSTEM_STATS_TEST_IN_USE(entry, expected) (chip::System::Stats::GetResourcesInUse()[entry] == (expected))
#define SYSTEM_STATS_TEST_HIGH_WATER_MARK(entry, expected) (chip::System::Stats::GetHighWatermarks()[entry] == (expected))

#else // CHIP_SYSTEM_CONFIG_PROVIDE_STATISTICS

#define SYSTEM_STATS_INCREMENT(entry)
Expand All @@ -165,4 +169,7 @@ const Label * GetStrings();

#define SYSTEM_STATS_UPDATE_LWIP_PBUF_COUNTS()

#define SYSTEM_STATS_TEST_IN_USE(entry, expected) (true)
#define SYSTEM_STATS_TEST_HIGH_WATER_MARK(entry, expected) (true)

#endif // CHIP_SYSTEM_CONFIG_PROVIDE_STATISTICS

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