Document ISOSDacInterface private DAC APIs used by ClrMD

docs/framework/unmanaged-api/debugging/dacpappdomaindata-structure.md

@@ -0,0 +1,85 @@
+---
+description: "Learn more about: DacpAppDomainData Structure"
+title: "DacpAppDomainData Structure"
+ms.date: "07/30/2026"
+api.name:
+  - "DacpAppDomainData Structure"
+api.location:
+  - "mscordacwks.dll"
+api.type:
+  - "COM"
+f1.keywords:
+  - "DacpAppDomainData Structure"
+helpviewer.keywords:
+  - "DacpAppDomainData Structure [.NET Framework debugging]"
+topic_type:
+  - "apiref"
+ai-usage: ai-assisted
+author: "leculver"
+ms.author: "leculver"
+---
+# DacpAppDomainData Structure
+
+Defines a transport buffer for runtime application domain information.
+
+[!INCLUDE[debugging-api-recommended-note](../../../../includes/debugging-api-recommended-note.md)]
+
+## Syntax
+
+```cpp
+struct DacpAppDomainData : ZeroInit<DacpAppDomainData>
+{
+    // The pointer to the BaseDomain (not necessarily an AppDomain).  
+    // It's useful to keep this around in the structure
+    CLRDATA_ADDRESS AppDomainPtr; 
+    CLRDATA_ADDRESS AppSecDesc;
+    CLRDATA_ADDRESS pLowFrequencyHeap;
+    CLRDATA_ADDRESS pHighFrequencyHeap;
+    CLRDATA_ADDRESS pStubHeap;
+    CLRDATA_ADDRESS DomainLocalBlock;
+    CLRDATA_ADDRESS pDomainLocalModules;    
+    // The creation sequence number of this app domain (starting from 1)
+    DWORD dwId;
+    LONG AssemblyCount;
+    LONG FailedAssemblyCount;
+    DacpAppDomainDataStage appDomainStage; 
+
+    HRESULT Request(ISOSDacInterface *sos, CLRDATA_ADDRESS addr)
+    {
+        return sos->GetAppDomainData(addr, this);
+    }
+};
+```
+
+## Members
+
+| Member | Description |
+| ------ | ----------- |
+| `AppDomainPtr` | The address of the base domain. For an application domain, this value is the application domain address. |
+| `AppSecDesc` | The address of the application security descriptor. |
+| `pLowFrequencyHeap` | The address of the low-frequency loader heap. |
+| `pHighFrequencyHeap` | The address of the high-frequency loader heap. |
+| `pStubHeap` | The address of the stub heap. |
+| `DomainLocalBlock` | The address of the domain local block. |
+| `pDomainLocalModules` | The address of the domain local modules. |
+| `dwId` | The creation sequence number of the application domain, starting from 1. |
+| `AssemblyCount` | The number of assemblies in the application domain. |
+| `FailedAssemblyCount` | The number of failed assemblies in the application domain. |
+| `appDomainStage` | A `DacpAppDomainDataStage` value that indicates the application domain lifecycle stage. |
+| `Request` | Populates the structure by calling `ISOSDacInterface::GetAppDomainData`. |
+
+## Remarks
+
+This structure lives inside the runtime and is not exposed through any headers or library files. To use it, define the structure as specified above.
+
+## Requirements
+
+**Platforms:** See [System Requirements](../../get-started/system-requirements.md).  
+**Header:** None  
+**Library:** None  
+**.NET Framework Versions:** [!INCLUDE[net_current_v47plus](../../../../includes/net-current-v47plus.md)]  
+
+## See also
+
+- [Debugging](index.md)
+- [Debugging Structures](debugging-structures.md)

docs/framework/unmanaged-api/debugging/dacpappdomainstoredata-structure.md

@@ -0,0 +1,66 @@
+---
+description: "Learn more about: DacpAppDomainStoreData Structure"
+title: "DacpAppDomainStoreData Structure"
+ms.date: "07/30/2026"
+api.name:
+  - "DacpAppDomainStoreData Structure"
+api.location:
+  - "mscordacwks.dll"
+api.type:
+  - "COM"
+f1.keywords:
+  - "DacpAppDomainStoreData Structure"
+helpviewer.keywords:
+  - "DacpAppDomainStoreData Structure [.NET Framework debugging]"
+topic_type:
+  - "apiref"
+ai-usage: ai-assisted
+author: "leculver"
+ms.author: "leculver"
+---
+# DacpAppDomainStoreData Structure
+
+Defines a transport buffer for runtime application domain store information.
+
+[!INCLUDE[debugging-api-recommended-note](../../../../includes/debugging-api-recommended-note.md)]
+
+## Syntax
+
+```cpp
+struct DacpAppDomainStoreData : ZeroInit<DacpAppDomainStoreData>
+{
+    CLRDATA_ADDRESS sharedDomain;
+    CLRDATA_ADDRESS systemDomain;
+    LONG DomainCount;
+
+    HRESULT Request(ISOSDacInterface *sos)
+    {
+        return sos->GetAppDomainStoreData(this);
+    }
+};
+```
+
+## Members
+
+| Member | Description |
+| ------ | ----------- |
+| `sharedDomain` | The address of the shared domain. |
+| `systemDomain` | The address of the system domain. |
+| `DomainCount` | The number of application domains in the runtime. |
+| `Request` | Populates the structure by calling `ISOSDacInterface::GetAppDomainStoreData`. |
+
+## Remarks
+
+This structure lives inside the runtime and is not exposed through any headers or library files. To use it, define the structure as specified above.
+
+## Requirements
+
+**Platforms:** See [System Requirements](../../get-started/system-requirements.md).  
+**Header:** None  
+**Library:** None  
+**.NET Framework Versions:** [!INCLUDE[net_current_v47plus](../../../../includes/net-current-v47plus.md)]  
+
+## See also
+
+- [Debugging](index.md)
+- [Debugging Structures](debugging-structures.md)

docs/framework/unmanaged-api/debugging/dacpassemblydata-structure.md

@@ -0,0 +1,85 @@
+---
+description: "Learn more about: DacpAssemblyData Structure"
+title: "DacpAssemblyData Structure"
+ms.date: "07/30/2026"
+api.name:
+  - "DacpAssemblyData Structure"
+api.location:
+  - "mscordacwks.dll"
+api.type:
+  - "COM"
+f1.keywords:
+  - "DacpAssemblyData Structure"
+helpviewer.keywords:
+  - "DacpAssemblyData Structure [.NET Framework debugging]"
+topic_type:
+  - "apiref"
+ai-usage: ai-assisted
+author: "leculver"
+ms.author: "leculver"
+---
+# DacpAssemblyData Structure
+
+Defines a transport buffer for runtime assembly information.
+
+[!INCLUDE[debugging-api-recommended-note](../../../../includes/debugging-api-recommended-note.md)]
+
+## Syntax
+
+```cpp
+struct DacpAssemblyData : ZeroInit<DacpAssemblyData>
+{
+    CLRDATA_ADDRESS AssemblyPtr; //useful to have
+    CLRDATA_ADDRESS ClassLoader;
+    CLRDATA_ADDRESS ParentDomain;
+    CLRDATA_ADDRESS BaseDomainPtr;
+    CLRDATA_ADDRESS AssemblySecDesc;
+    BOOL isDynamic;
+    UINT ModuleCount;
+    UINT LoadContext;
+    BOOL isDomainNeutral;
+    DWORD dwLocationFlags;
+
+    HRESULT Request(ISOSDacInterface *sos, CLRDATA_ADDRESS addr, CLRDATA_ADDRESS baseDomainPtr)
+    {
+        return sos->GetAssemblyData(baseDomainPtr, addr, this);
+    }
+
+    HRESULT Request(ISOSDacInterface *sos, CLRDATA_ADDRESS addr)
+    {
+        return Request(sos, addr, NULL);
+    }
+};
+```
+
+## Members
+
+| Member | Description |
+| ------ | ----------- |
+| `AssemblyPtr` | The address of the assembly. |
+| `ClassLoader` | The address of the class loader for the assembly. |
+| `ParentDomain` | The address of the parent application domain. |
+| `BaseDomainPtr` | The address of the base domain that contains the assembly. |
+| `AssemblySecDesc` | The address of the assembly security descriptor. |
+| `isDynamic` | A value that indicates whether the assembly is dynamic. |
+| `ModuleCount` | The number of modules in the assembly. |
+| `LoadContext` | The assembly load context value. |
+| `isDomainNeutral` | A value that indicates whether the assembly is domain-neutral. |
+| `dwLocationFlags` | A bitmask of location flags for the assembly. |
+| `Request` | Populates the structure by calling `ISOSDacInterface::GetAssemblyData`. |
+
+## Remarks
+
+This structure lives inside the runtime and is not exposed through any headers or library files. To use it, define the structure as specified above.
+
+## Requirements
+
+**Platforms:** See [System Requirements](../../get-started/system-requirements.md).  
+**Header:** None  
+**Library:** None  
+**.NET Framework Versions:** [!INCLUDE[net_current_v47plus](../../../../includes/net-current-v47plus.md)]  
+
+## See also
+
+- [Debugging](index.md)
+- [Debugging Structures](debugging-structures.md)

docs/framework/unmanaged-api/debugging/dacpccwdata-structure.md

@@ -0,0 +1,88 @@
+---
+description: "Learn more about: DacpCCWData Structure"
+title: "DacpCCWData Structure"
+ms.date: "07/30/2026"
+api.name:
+  - "DacpCCWData Structure"
+api.location:
+  - "mscordacwks.dll"
+api.type:
+  - "COM"
+f1.keywords:
+  - "DacpCCWData Structure"
+helpviewer.keywords:
+  - "DacpCCWData Structure [.NET Framework debugging]"
+topic_type:
+  - "apiref"
+ai-usage: ai-assisted
+author: "leculver"
+ms.author: "leculver"
+---
+# DacpCCWData Structure
+
+Defines a transport buffer for COM callable wrapper (CCW) information.
+
+[!INCLUDE[debugging-api-recommended-note](../../../../includes/debugging-api-recommended-note.md)]
+
+## Syntax
+
+```cpp
+struct DacpCCWData : ZeroInit<DacpCCWData>
+{
+    CLRDATA_ADDRESS outerIUnknown;
+    CLRDATA_ADDRESS managedObject;
+    CLRDATA_ADDRESS handle;
+    CLRDATA_ADDRESS ccwAddress;
+
+    LONG refCount;
+    LONG interfaceCount;
+    BOOL isNeutered;
+
+    LONG jupiterRefCount;
+    BOOL isPegged;
+    BOOL isGlobalPegged;
+    BOOL hasStrongRef;
+    BOOL isExtendsCOMObject;
+    BOOL isAggregated;
+
+    HRESULT Request(ISOSDacInterface *sos, CLRDATA_ADDRESS ccw)
+    {
+        return sos->GetCCWData(ccw, this);
+    }
+};
+```
+
+## Members
+
+| Member | Description |
+| ------ | ----------- |
+| `outerIUnknown` | The address of the outer `IUnknown` pointer. |
+| `managedObject` | The address of the managed object associated with the CCW. |
+| `handle` | The address of the handle for the managed object. |
+| `ccwAddress` | The address of the CCW. |
+| `refCount` | The reference count for the CCW. |
+| `interfaceCount` | The number of interfaces associated with the CCW. |
+| `isNeutered` | A value that indicates whether the CCW is neutered. |
+| `jupiterRefCount` | The Jupiter reference count for the CCW. |
+| `isPegged` | A value that indicates whether the CCW is pegged. |
+| `isGlobalPegged` | A value that indicates whether the CCW is globally pegged. |
+| `hasStrongRef` | A value that indicates whether the CCW has a strong reference. |
+| `isExtendsCOMObject` | A value that indicates whether the managed object extends a COM object. |
+| `isAggregated` | A value that indicates whether the CCW is aggregated. |
+| `Request` | Populates the structure by calling `ISOSDacInterface::GetCCWData`. |
+
+## Remarks
+
+This structure lives inside the runtime and is not exposed through any headers or library files. To use it, define the structure as specified above.
+
+## Requirements
+
+**Platforms:** See [System Requirements](../../get-started/system-requirements.md).  
+**Header:** None  
+**Library:** None  
+**.NET Framework Versions:** [!INCLUDE[net_current_v47plus](../../../../includes/net-current-v47plus.md)]  
+
+## See also
+
+- [Debugging](index.md)
+- [Debugging Structures](debugging-structures.md)