Restrict generational aware analysis to processes that matches the command line configuration

src/coreclr/src/inc/clrconfigvalues.h

@@ -715,6 +715,7 @@ RETAIL_CONFIG_DWORD_INFO(INTERNAL_EventPipeProcNumbers, W("EventPipeProcNumbers"
 RETAIL_CONFIG_DWORD_INFO(INTERNAL_GCGenAnalysisGen, W("GCGenAnalysisGen"), 0, "The generation to trigger generational aware analysis")
 RETAIL_CONFIG_DWORD_INFO(INTERNAL_GCGenAnalysisBytes, W("GCGenAnalysisBytes"), 0, "The number of bytes to trigger generational aware analysis")
 RETAIL_CONFIG_DWORD_INFO(INTERNAL_GCGenAnalysisIndex, W("GCGenAnalysisIndex"), 0, "The gc index to trigger generational aware analysis")
+RETAIL_CONFIG_STRING_INFO(INTERNAL_GCGenAnalysisCmd, W("GCGenAnalysisCmd"), "An optional filter to match with the command line used to spawn the process")
 
 //
 // Diagnostics Ports

src/coreclr/src/vm/ClrEtwAll.man

@@ -133,6 +133,8 @@
                             <opcode name="GCJoin" message="$(string.RuntimePublisher.GCJoinOpcodeMessage)" symbol="CLR_GC_JOIN_OPCODE" value="203"> </opcode>
                             <opcode name="GCPerHeapHistory" message="$(string.RuntimePublisher.GCPerHeapHistoryOpcodeMessage)" symbol="CLR_GC_GCPERHEAPHISTORY_OPCODE" value="204"> </opcode>
                             <opcode name="GCGlobalHeapHistory" message="$(string.RuntimePublisher.GCGlobalHeapHistoryOpcodeMessage)" symbol="CLR_GC_GCGLOBALHEAPHISTORY_OPCODE" value="205"> </opcode>
+                            <opcode name="GenAwareBegin" message="$(string.RuntimePublisher.GenAwareBeginOpcodeMessage)" symbol="CLR_GC_GENAWAREBEGIN_OPCODE" value="206"> </opcode>
+                            <opcode name="GenAwareEnd" message="$(string.RuntimePublisher.GenAwareEndOpcodeMessage)" symbol="CLR_GC_GENAWAREEND_OPCODE" value="207"> </opcode>
                         </opcodes>
                     </task>
 
@@ -992,6 +994,17 @@
                         </UserData>
                     </template>
 
+                    <template tid="GenAwareTemplate">
+                        <data name="Count" inType="win:UInt32" />
+                        <data name="ClrInstanceID" inType="win:UInt16" />
+                        <UserData>
+                            <GenAwareTemplate xmlns="myNs">
+                                <Count> %1 </Count>
+                                <ClrInstanceID> %2 </ClrInstanceID>
+                            </GenAwareTemplate>
+                        </UserData>
+                    </template>
+
                     <template tid="GCSuspendEE">
                         <data name="Reason" inType="win:UInt16" map="GCSuspendEEReasonMap" />
 
@@ -3714,6 +3727,16 @@
                            task="GarbageCollection"
                            symbol="GCGlobalHeapHistory_V3" message="$(string.RuntimePublisher.GCGlobalHeap_V3EventMessage)"/>
 
+                    <event value="206" version="0" level="win:Informational"  template="GenAwareTemplate"
+                           keywords ="GCHeapDumpKeyword"  opcode="GenAwareBegin"
+                           task="GarbageCollection"
+                           symbol="GenAwareBegin" message="$(string.RuntimePublisher.GenAwareBeginEventMessage)"/>
+
+                    <event value="207" version="0" level="win:Informational"  template="GenAwareTemplate"
+                           keywords ="GCHeapDumpKeyword"  opcode="GenAwareEnd"
+                           task="GarbageCollection"
+                           symbol="GenAwareEnd" message="$(string.RuntimePublisher.GenAwareEndEventMessage)"/>
+
                     <!-- CLR Debugger events 240-249 -->
                     <event value="240" version="0" level="win:Informational"
                            keywords="DebuggerKeyword" opcode="win:Start"
@@ -3794,14 +3817,6 @@
                            keywords ="AssemblyLoaderKeyword" opcode="KnownPathProbed"
                            task="AssemblyLoader"
                            symbol="KnownPathProbed" message="$(string.RuntimePublisher.KnownPathProbedEventMessage)"/>
-
-                    <event value="297" version="0" level="win:Informational"
-                           keywords ="GCHeapDumpKeyword"
-                           symbol="GenAwareBegin" message="$(string.RuntimePublisher.GenAwareBeginEventMessage)"/>
-
-                    <event value="298" version="0" level="win:Informational"
-                           keywords ="GCHeapDumpKeyword"
-                           symbol="GenAwareEnd" message="$(string.RuntimePublisher.GenAwareEndEventMessage)"/>
                 </events>
             </provider>
 
@@ -7619,6 +7634,8 @@
                 <string id="RuntimePublisher.GCJoinOpcodeMessage" value="GCJoin" />
                 <string id="RuntimePublisher.GCPerHeapHistoryOpcodeMessage" value="PerHeapHistory" />
                 <string id="RuntimePublisher.GCGlobalHeapHistoryOpcodeMessage" value="GlobalHeapHistory" />
+                <string id="RuntimePublisher.GenAwareBeginOpcodeMessage" value="GenAwareBegin" />
+                <string id="RuntimePublisher.GenAwareEndOpcodeMessage" value="GenAwareEnd" />
                 <string id="RuntimePublisher.FinalizeObjectOpcodeMessage" value="FinalizeObject" />
                 <string id="RuntimePublisher.BulkTypeOpcodeMessage" value="BulkType" />
                 <string id="RuntimePublisher.MethodDetailsOpcodeMessage" value="MethodDetails" />

src/coreclr/src/vm/ceeload.cpp

@@ -11312,6 +11312,21 @@ LPCWSTR GetManagedCommandLine()
     return s_pCommandLine;
 }
 
+LPCWSTR GetCommandLineForDiagnostics()
+{
+    // Get the managed command line.
+    LPCWSTR pCmdLine = GetManagedCommandLine();
+
+    // Checkout https://github.com/dotnet/coreclr/pull/24433 for more information about this fall back.
+    if (pCmdLine == nullptr)
+    {
+        // Use the result from GetCommandLineW() instead
+        pCmdLine = GetCommandLineW();
+    }
+
+    return pCmdLine;
+}
+
 void Append_Next_Item(LPWSTR* ppCursor, SIZE_T* pRemainingLen, LPCWSTR pItem, bool addSpace)
 {
     // read the writeback args and setup pCursor and remainingLen
@@ -11417,14 +11432,7 @@ static void ProfileDataAllocateScenarioInfo(ProfileEmitter * pEmitter, LPCSTR sc
     //
     {
         // Get the managed command line.
-        LPCWSTR pCmdLine = GetManagedCommandLine();
-
-        // Checkout https://github.com/dotnet/coreclr/pull/24433 for more information about this fall back.
-        if (pCmdLine == nullptr)
-        {
-            // Use the result from GetCommandLineW() instead
-            pCmdLine = GetCommandLineW();
-        }
+        LPCWSTR pCmdLine = GetCommandLineForDiagnostics();
 
         S_SIZE_T cCmdLine = S_SIZE_T(wcslen(pCmdLine));
         cCmdLine += 1;

src/coreclr/src/vm/ceeload.h

@@ -3419,9 +3419,9 @@ struct VASigCookieEx : public VASigCookie
     const BYTE *m_pArgs;        // pointer to first unfixed unmanaged arg
 };
 
-// Rerieve the full command line for the current process.
-LPCWSTR GetManagedCommandLine();
 // Save the command line for the current process.
 void SaveManagedCommandLine(LPCWSTR pwzAssemblyPath, int argc, LPCWSTR *argv);
 
+LPCWSTR GetCommandLineForDiagnostics();
+
 #endif // !CEELOAD_H_

src/coreclr/src/vm/eeconfig.cpp

@@ -38,7 +38,7 @@ Volatile<DWORD> GCStressPolicy::InhibitHolder::s_nGcStressDisabled = 0;
 
 /**************************************************************/
 // Poor mans narrow
-LPUTF8 NarrowWideChar(__inout_z LPWSTR str)
+LPUTF8 NarrowWideChar(__inout_z LPCWSTR str)
 {
     CONTRACT (LPUTF8)
     {
@@ -50,7 +50,7 @@ LPUTF8 NarrowWideChar(__inout_z LPWSTR str)
     } CONTRACT_END;
 
     if (str != 0) {
-        LPWSTR fromPtr = str;
+        LPCWSTR fromPtr = str;
         LPUTF8 toPtr = (LPUTF8) str;
         LPUTF8 result = toPtr;
         while(*fromPtr != 0)

src/coreclr/src/vm/eventpipe.cpp

@@ -499,14 +499,7 @@ void EventPipe::DisableHelper(EventPipeSessionID id)
 static void LogProcessInformationEvent(EventPipeEventSource &eventSource)
 {
     // Get the managed command line.
-    LPCWSTR pCmdLine = GetManagedCommandLine();
-
-    // Checkout https://github.com/dotnet/coreclr/pull/24433 for more information about this fall back.
-    if (pCmdLine == nullptr)
-    {
-        // Use the result from GetCommandLineW() instead
-        pCmdLine = GetCommandLineW();
-    }
+    LPCWSTR pCmdLine = GetCommandLineForDiagnostics();
 
     // Log the process information event.
     eventSource.SendProcessInfo(pCmdLine);

src/coreclr/src/vm/gcenv.ee.cpp

@@ -1604,12 +1604,12 @@ void GCToEEInterface::AnalyzeSurvivorsFinished(size_t gcIndex, int condemnedGene
 #endif
         {
             gcGenAnalysisEventPipeSession->Resume();
-            FireEtwGenAwareBegin();
+            FireEtwGenAwareBegin((int)gcIndex, GetClrInstanceId());
             s_forcedGCInProgress = true;
             GCProfileWalkHeap(true);
             s_forcedGCInProgress = false;
             reportGenerationBounds();
-            FireEtwGenAwareEnd();
+            FireEtwGenAwareEnd((int)gcIndex, GetClrInstanceId());
             gcGenAnalysisEventPipeSession->Pause();
             gcGenAnalysisState = GcGenAnalysisState::Done;
             EnableFinalization(true);

src/coreclr/src/vm/genanalysis.cpp

@@ -18,27 +18,33 @@ uint32_t gcGenAnalysisBufferMB = 0;
 #ifndef GEN_ANALYSIS_STRESS
     if (gcGenAnalysisConfigured == GcGenAnalysisState::Uninitialized)
     {
-        if (CLRConfig::IsConfigOptionSpecified(W("GCGenAnalysisGen")))
+        bool match = true;
+        CLRConfigStringHolder gcGenAnalysisCmd(CLRConfig::GetConfigValue(CLRConfig::INTERNAL_GCGenAnalysisCmd));
+        if (gcGenAnalysisCmd != nullptr)
         {
+            // Get the managed command line.
+            LPCWSTR pCmdLine = GetCommandLineForDiagnostics();
+            match = wcsncmp(pCmdLine, gcGenAnalysisCmd, wcslen(gcGenAnalysisCmd)) == 0;
+        }
+        if (match && !CLRConfig::IsConfigOptionSpecified(W("GCGenAnalysisGen")))
+        {
+            match = false;
+        }
+        if (match && !CLRConfig::IsConfigOptionSpecified(W("GCGenAnalysisBytes")))
+        {
+            match = false;
+        }
+        if (match)
+        {
+            gcGenAnalysisBytes = CLRConfig::GetConfigValue(CLRConfig::INTERNAL_GCGenAnalysisBytes);
             gcGenAnalysisGen = CLRConfig::GetConfigValue(CLRConfig::INTERNAL_GCGenAnalysisGen);
-            if (CLRConfig::IsConfigOptionSpecified(W("GCGenAnalysisBytes")))
-            {
-                gcGenAnalysisBytes = CLRConfig::GetConfigValue(CLRConfig::INTERNAL_GCGenAnalysisBytes);
-                if (CLRConfig::IsConfigOptionSpecified(W("GCGenAnalysisIndex")))
-                {
-                    gcGenAnalysisIndex = CLRConfig::GetConfigValue(CLRConfig::INTERNAL_GCGenAnalysisIndex);
-                    gcGenAnalysisConfigured = GcGenAnalysisState::Enabled;
-                    gcGenAnalysisBufferMB = CLRConfig::GetConfigValue(CLRConfig::INTERNAL_EventPipeCircularMB);
-                }
-                else
-                {
-                    gcGenAnalysisConfigured = GcGenAnalysisState::Disabled;
-                }
-            }
-            else
-            {
-                gcGenAnalysisConfigured = GcGenAnalysisState::Disabled;
-            }
+            gcGenAnalysisIndex = CLRConfig::GetConfigValue(CLRConfig::INTERNAL_GCGenAnalysisIndex);
+            gcGenAnalysisBufferMB = CLRConfig::GetConfigValue(CLRConfig::INTERNAL_EventPipeCircularMB);
+            gcGenAnalysisConfigured = GcGenAnalysisState::Enabled;
+        }
+        else
+        {
+            gcGenAnalysisConfigured = GcGenAnalysisState::Disabled;
         }
     }
     if ((gcGenAnalysisConfigured == GcGenAnalysisState::Enabled) && (gcGenAnalysisState == GcGenAnalysisState::Uninitialized))

src/coreclr/src/vm/processdiagnosticsprotocolhelper.cpp

@@ -278,14 +278,7 @@ void ProcessDiagnosticsProtocolHelper::GetProcessInfo(DiagnosticsIpc::IpcMessage
     struct ProcessInfoPayload payload = {};
 
     // Get cmdline
-    payload.CommandLine = GetManagedCommandLine();
-
-    // Checkout https://github.com/dotnet/coreclr/pull/24433 for more information about this fall back.
-    if (payload.CommandLine == nullptr)
-    {
-        // Use the result from GetCommandLineW() instead
-        payload.CommandLine = GetCommandLineW();
-    }
+    payload.CommandLine = GetCommandLineForDiagnostics();
 
     // get OS + Arch info
     payload.OS = EventPipeEventSource::s_pOSInformation;