Skip to content

WIP: Add ISOSDacInterface18 for GCInfo inspection APIs #129761

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Draft
max-charlamb wants to merge 4 commits into
base: main
Choose a base branch
from
Draft

WIP: Add ISOSDacInterface18 for GCInfo inspection APIs #129761

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
4 commits
Select commit Hold shift + click to select a range
b219a66
WIP: ISOSDacInterface18 GCInfo with efficient GetSlotLifetimes
Jun 24, 2026
25efe2c
Unify GCInfo slot lifetime APIs and eagerly decode safe points
Jun 24, 2026
23d5eb6
Fix GetSlotLifetimes for safe-point-only methods
Jun 25, 2026
9300b12
Fix ResolveGCInfo missing eman/cbh declarations
Jun 30, 2026
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
79 changes: 79 additions & 0 deletions src/coreclr/inc/sospriv.idl
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -657,3 +657,82 @@ interface ISOSDacInterface17 : IUnknown
[out] ISOSStressLogMsgEnum **ppEnum);
HRESULT GetStressLogMemoryRanges([out] ISOSMemoryEnum **ppEnum);
}

cpp_quote("#ifndef _SOS_GCInfoData")
cpp_quote("#define _SOS_GCInfoData")

typedef struct _SOSCodeRange
{
unsigned int BeginOffset;
unsigned int EndOffset;
} SOSCodeRange;

typedef struct _SOSGCInfoHeader
{
ULONG SizeOf;

unsigned int GcInfoVersion;
unsigned int CodeSize;
unsigned int PrologSize;
unsigned int StackBaseRegister;
unsigned int SizeOfStackParameterArea;

BOOL IsVarArg;
BOOL WantsReportOnlyLeaf;
BOOL HasTailCalls;

BOOL GSCookieIsPresent;
int GSCookieStackSlot;
unsigned int GSCookieValidRangeStart;
unsigned int GSCookieValidRangeEnd;

BOOL PSPSymIsPresent;
int PSPSymStackSlot;

BOOL GenericsInstContextIsPresent;
int GenericsInstContextStackSlot;
unsigned int GenericsInstContextKind;
} SOSGCInfoHeader;

typedef struct _SOSGCSlotLifetime
{
unsigned int BeginOffset;
unsigned int EndOffset;
int IsRegister;
unsigned int RegisterNumber;
int SpOffset;
unsigned int BaseRegister;
unsigned int GcFlags;
} SOSGCSlotLifetime;

cpp_quote("#endif //_SOS_GCInfoData")

[
object,
local,
uuid(3dccf95b-bca2-40ee-8b83-d8d7574a1df0)
]
interface ISOSDacInterface18 : IUnknown
{
HRESULT GetGCInfoHeader(
[in] CLRDATA_ADDRESS ip,
[in, out] SOSGCInfoHeader* header);

HRESULT GetGCInfoInterruptibleRanges(
[in] CLRDATA_ADDRESS ip,
[in] ULONG count,
[out, size_is(count), length_is(*pNeeded)] SOSCodeRange* ranges,
[out] ULONG* pNeeded);

HRESULT GetGCInfoSafePoints(
[in] CLRDATA_ADDRESS ip,
[in] ULONG count,
[out, size_is(count), length_is(*pNeeded)] unsigned int* offsets,
[out] ULONG* pNeeded);

HRESULT GetGCInfoSlotLifetimes(
[in] CLRDATA_ADDRESS ip,
[in] ULONG count,
[out, size_is(count), length_is(*pNeeded)] SOSGCSlotLifetime* lifetimes,
[out] ULONG* pNeeded);
}
13 changes: 12 additions & 1 deletion src/coreclr/pal/prebuilt/idl/sospriv_i.cpp
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -130,11 +130,22 @@ MIDL_DEFINE_GUID(IID, IID_ISOSDacInterface15,0x7ed81261,0x52a9,0x4a23,0xa3,0x58,

MIDL_DEFINE_GUID(IID, IID_ISOSDacInterface16,0x4ba12ff8,0xdaac,0x4e43,0xac,0x56,0x98,0xcf,0x8d,0x5c,0x59,0x5d);


MIDL_DEFINE_GUID(IID, IID_ISOSStressLogThreadEnum,0x94a2bd3d,0xab3d,0x43bf,0x81,0xd8,0x3a,0xe9,0x6b,0x8e,0x33,0xcd);


MIDL_DEFINE_GUID(IID, IID_ISOSStressLogMsgEnum,0x437cb033,0xafe7,0x4c0f,0xa4,0xa7,0x82,0xc8,0x91,0xbc,0x04,0x9e);


MIDL_DEFINE_GUID(IID, IID_ISOSDacInterface17,0x2f4bb585,0xed50,0x479e,0xbb,0xe0,0x10,0xa9,0x5a,0x5d,0xa3,0xbb);


MIDL_DEFINE_GUID(IID, IID_ISOSDacInterface18,0x3dccf95b,0xbca2,0x40ee,0x8b,0x83,0xd8,0xd7,0x57,0x4a,0x1d,0xf0);

#undef MIDL_DEFINE_GUID

#ifdef __cplusplus
}
#endif



Loading
Loading