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|
// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
// ===========================================================================
// File: CodeVersion.h
//
// ===========================================================================
#ifndef CODE_VERSION_H
#define CODE_VERSION_H
class NativeCodeVersion;
class ILCodeVersion;
typedef DWORD NativeCodeVersionId;
#ifdef FEATURE_CODE_VERSIONING
class NativeCodeVersionNode;
typedef DPTR(class NativeCodeVersionNode) PTR_NativeCodeVersionNode;
class NativeCodeVersionCollection;
class NativeCodeVersionIterator;
class ILCodeVersionNode;
typedef DPTR(class ILCodeVersionNode) PTR_ILCodeVersionNode;
class ILCodeVersionCollection;
class ILCodeVersionIterator;
class MethodDescVersioningState;
typedef DPTR(class MethodDescVersioningState) PTR_MethodDescVersioningState;
class ILCodeVersioningState;
typedef DPTR(class ILCodeVersioningState) PTR_ILCodeVersioningState;
class CodeVersionManager;
typedef DPTR(class CodeVersionManager) PTR_CodeVersionManager;
// This HRESULT is only used as a private implementation detail. Corerror.xml has a comment in it
// reserving this value for our use but it doesn't appear in the public headers.
#define CORPROF_E_RUNTIME_SUSPEND_REQUIRED 0x80131381
#endif
class NativeCodeVersion
{
#ifdef FEATURE_CODE_VERSIONING
friend class MethodDescVersioningState;
friend class ILCodeVersion;
#endif
public:
NativeCodeVersion();
NativeCodeVersion(const NativeCodeVersion & rhs);
#ifdef FEATURE_CODE_VERSIONING
NativeCodeVersion(PTR_NativeCodeVersionNode pVersionNode);
#endif
NativeCodeVersion(PTR_MethodDesc pMethod);
BOOL IsNull() const;
PTR_MethodDesc GetMethodDesc() const;
NativeCodeVersionId GetVersionId() const;
BOOL IsDefaultVersion() const;
PCODE GetNativeCode() const;
ILCodeVersion GetILCodeVersion() const;
ReJITID GetILCodeVersionId() const;
#ifndef DACCESS_COMPILE
BOOL SetNativeCodeInterlocked(PCODE pCode, PCODE pExpected = NULL);
#endif
#ifdef FEATURE_TIERED_COMPILATION
enum OptimizationTier
{
OptimizationTier0,
OptimizationTier1
};
OptimizationTier GetOptimizationTier() const;
#ifndef DACCESS_COMPILE
void SetOptimizationTier(OptimizationTier tier);
#endif
#endif // FEATURE_TIERED_COMPILATION
bool operator==(const NativeCodeVersion & rhs) const;
bool operator!=(const NativeCodeVersion & rhs) const;
#if defined(DACCESS_COMPILE) && defined(FEATURE_CODE_VERSIONING)
// The DAC is privy to the backing node abstraction
PTR_NativeCodeVersionNode AsNode() const;
#endif
private:
#ifndef FEATURE_CODE_VERSIONING
MethodDesc* m_pMethodDesc;
#else // FEATURE_CODE_VERSIONING
#ifndef DACCESS_COMPILE
NativeCodeVersionNode* AsNode() const;
NativeCodeVersionNode* AsNode();
void SetActiveChildFlag(BOOL isActive);
MethodDescVersioningState* GetMethodDescVersioningState();
#endif
BOOL IsActiveChildVersion() const;
PTR_MethodDescVersioningState GetMethodDescVersioningState() const;
enum StorageKind
{
Unknown,
Explicit,
Synthetic
};
StorageKind m_storageKind;
union
{
PTR_NativeCodeVersionNode m_pVersionNode;
struct SyntheticStorage
{
PTR_MethodDesc m_pMethodDesc;
} m_synthetic;
};
#endif // FEATURE_CODE_VERSIONING
};
#ifdef FEATURE_CODE_VERSIONING
class ILCodeVersion
{
friend class NativeCodeVersionIterator;
public:
ILCodeVersion();
ILCodeVersion(const ILCodeVersion & ilCodeVersion);
ILCodeVersion(PTR_ILCodeVersionNode pILCodeVersionNode);
ILCodeVersion(PTR_Module pModule, mdMethodDef methodDef);
bool operator==(const ILCodeVersion & rhs) const;
bool operator!=(const ILCodeVersion & rhs) const;
BOOL IsNull() const;
BOOL IsDefaultVersion() const;
PTR_Module GetModule() const;
mdMethodDef GetMethodDef() const;
ReJITID GetVersionId() const;
NativeCodeVersionCollection GetNativeCodeVersions(PTR_MethodDesc pClosedMethodDesc) const;
NativeCodeVersion GetActiveNativeCodeVersion(PTR_MethodDesc pClosedMethodDesc) const;
PTR_COR_ILMETHOD GetIL() const;
PTR_COR_ILMETHOD GetILNoThrow() const;
DWORD GetJitFlags() const;
const InstrumentedILOffsetMapping* GetInstrumentedILMap() const;
#ifndef DACCESS_COMPILE
void SetIL(COR_ILMETHOD* pIL);
void SetJitFlags(DWORD flags);
void SetInstrumentedILMap(SIZE_T cMap, COR_IL_MAP * rgMap);
HRESULT AddNativeCodeVersion(MethodDesc* pClosedMethodDesc, NativeCodeVersion* pNativeCodeVersion);
HRESULT GetOrCreateActiveNativeCodeVersion(MethodDesc* pClosedMethodDesc, NativeCodeVersion* pNativeCodeVersion);
HRESULT SetActiveNativeCodeVersion(NativeCodeVersion activeNativeCodeVersion, BOOL fEESuspended);
#endif //DACCESS_COMPILE
enum RejitFlags
{
// The profiler has requested a ReJit, so we've allocated stuff, but we haven't
// called back to the profiler to get any info or indicate that the ReJit has
// started. (This Info can be 'reused' for a new ReJit if the
// profiler calls RequestRejit again before we transition to the next state.)
kStateRequested = 0x00000000,
// The CLR has initiated the call to the profiler's GetReJITParameters() callback
// but it hasn't completed yet. At this point we have to assume the profiler has
// commited to a specific IL body, even if the CLR doesn't know what it is yet.
// If the profiler calls RequestRejit we need to allocate a new ILCodeVersion
// and call GetReJITParameters() again.
kStateGettingReJITParameters = 0x00000001,
// We have asked the profiler about this method via ICorProfilerFunctionControl,
// and have thus stored the IL and codegen flags the profiler specified.
kStateActive = 0x00000002,
kStateMask = 0x0000000F,
};
RejitFlags GetRejitState() const;
#ifndef DACCESS_COMPILE
void SetRejitState(RejitFlags newState);
#endif
#ifdef DACCESS_COMPILE
// The DAC is privy to the backing node abstraction
PTR_ILCodeVersionNode AsNode() const;
#endif
private:
#ifndef DACCESS_COMPILE
PTR_ILCodeVersionNode AsNode();
PTR_ILCodeVersionNode AsNode() const;
#endif
enum StorageKind
{
Unknown,
Explicit,
Synthetic
};
StorageKind m_storageKind;
union
{
PTR_ILCodeVersionNode m_pVersionNode;
struct SyntheticStorage
{
PTR_Module m_pModule;
mdMethodDef m_methodDef;
} m_synthetic;
};
};
class NativeCodeVersionNode
{
friend NativeCodeVersionIterator;
friend MethodDescVersioningState;
friend ILCodeVersionNode;
public:
#ifndef DACCESS_COMPILE
NativeCodeVersionNode(NativeCodeVersionId id, MethodDesc* pMethod, ReJITID parentId);
#endif
#ifdef DEBUG
BOOL LockOwnedByCurrentThread() const;
#endif
PTR_MethodDesc GetMethodDesc() const;
NativeCodeVersionId GetVersionId() const;
PCODE GetNativeCode() const;
ReJITID GetILVersionId() const;
ILCodeVersion GetILCodeVersion() const;
BOOL IsActiveChildVersion() const;
#ifndef DACCESS_COMPILE
BOOL SetNativeCodeInterlocked(PCODE pCode, PCODE pExpected);
void SetActiveChildFlag(BOOL isActive);
#endif
#ifdef FEATURE_TIERED_COMPILATION
NativeCodeVersion::OptimizationTier GetOptimizationTier() const;
#ifndef DACCESS_COMPILE
void SetOptimizationTier(NativeCodeVersion::OptimizationTier tier);
#endif
#endif
private:
//union - could save a little memory?
//{
PCODE m_pNativeCode;
PTR_MethodDesc m_pMethodDesc;
//};
ReJITID m_parentId;
PTR_NativeCodeVersionNode m_pNextMethodDescSibling;
NativeCodeVersionId m_id;
#ifdef FEATURE_TIERED_COMPILATION
Volatile<NativeCodeVersion::OptimizationTier> m_optTier;
#endif
enum NativeCodeVersionNodeFlags
{
IsActiveChildFlag = 1
};
DWORD m_flags;
};
class NativeCodeVersionCollection
{
friend class NativeCodeVersionIterator;
public:
NativeCodeVersionCollection(PTR_MethodDesc pMethodDescFilter, ILCodeVersion ilCodeFilter);
NativeCodeVersionIterator Begin();
NativeCodeVersionIterator End();
private:
PTR_MethodDesc m_pMethodDescFilter;
ILCodeVersion m_ilCodeFilter;
};
class NativeCodeVersionIterator : public Enumerator<const NativeCodeVersion, NativeCodeVersionIterator>
{
friend class Enumerator<const NativeCodeVersion, NativeCodeVersionIterator>;
public:
NativeCodeVersionIterator(NativeCodeVersionCollection* pCollection);
CHECK Check() const { CHECK_OK; }
protected:
const NativeCodeVersion & Get() const;
void First();
void Next();
bool Equal(const NativeCodeVersionIterator &i) const;
CHECK DoCheck() const { CHECK_OK; }
private:
enum IterationStage
{
Initial,
ImplicitCodeVersion,
LinkedList,
End
};
IterationStage m_stage;
NativeCodeVersionCollection* m_pCollection;
PTR_NativeCodeVersionNode m_pLinkedListCur;
NativeCodeVersion m_cur;
};
class ILCodeVersionNode
{
public:
ILCodeVersionNode();
#ifndef DACCESS_COMPILE
ILCodeVersionNode(Module* pModule, mdMethodDef methodDef, ReJITID id);
#endif
#ifdef DEBUG
BOOL LockOwnedByCurrentThread() const;
#endif //DEBUG
PTR_Module GetModule() const;
mdMethodDef GetMethodDef() const;
ReJITID GetVersionId() const;
PTR_COR_ILMETHOD GetIL() const;
DWORD GetJitFlags() const;
const InstrumentedILOffsetMapping* GetInstrumentedILMap() const;
ILCodeVersion::RejitFlags GetRejitState() const;
PTR_ILCodeVersionNode GetNextILVersionNode() const;
#ifndef DACCESS_COMPILE
void SetIL(COR_ILMETHOD* pIL);
void SetJitFlags(DWORD flags);
void SetInstrumentedILMap(SIZE_T cMap, COR_IL_MAP * rgMap);
void SetRejitState(ILCodeVersion::RejitFlags newState);
void SetNextILVersionNode(ILCodeVersionNode* pNextVersionNode);
#endif
private:
PTR_Module m_pModule;
mdMethodDef m_methodDef;
ReJITID m_rejitId;
PTR_ILCodeVersionNode m_pNextILVersionNode;
Volatile<ILCodeVersion::RejitFlags> m_rejitState;
VolatilePtr<COR_ILMETHOD> m_pIL;
Volatile<DWORD> m_jitFlags;
InstrumentedILOffsetMapping m_instrumentedILMap;
};
class ILCodeVersionCollection
{
friend class ILCodeVersionIterator;
public:
ILCodeVersionCollection(PTR_Module pModule, mdMethodDef methodDef);
ILCodeVersionIterator Begin();
ILCodeVersionIterator End();
private:
PTR_Module m_pModule;
mdMethodDef m_methodDef;
};
class ILCodeVersionIterator : public Enumerator<const ILCodeVersion, ILCodeVersionIterator>
{
friend class Enumerator<const ILCodeVersion, ILCodeVersionIterator>;
public:
ILCodeVersionIterator();
ILCodeVersionIterator(const ILCodeVersionIterator & iter);
ILCodeVersionIterator(ILCodeVersionCollection* pCollection);
CHECK Check() const { CHECK_OK; }
protected:
const ILCodeVersion & Get() const;
void First();
void Next();
bool Equal(const ILCodeVersionIterator &i) const;
CHECK DoCheck() const { CHECK_OK; }
private:
enum IterationStage
{
Initial,
ImplicitCodeVersion,
LinkedList,
End
};
IterationStage m_stage;
ILCodeVersion m_cur;
PTR_ILCodeVersionNode m_pLinkedListCur;
ILCodeVersionCollection* m_pCollection;
};
class MethodDescVersioningState
{
public:
// The size of the code used to jump stamp the prolog
#ifdef FEATURE_JUMPSTAMP
static const size_t JumpStubSize =
#if defined(_X86_) || defined(_AMD64_)
5;
#else
#error "Need to define size of jump-stamp for this platform"
#endif
#endif // FEATURE_JUMPSTAMP
MethodDescVersioningState(PTR_MethodDesc pMethodDesc);
PTR_MethodDesc GetMethodDesc() const;
NativeCodeVersionId AllocateVersionId();
PTR_NativeCodeVersionNode GetFirstVersionNode() const;
#ifndef DACCESS_COMPILE
#ifdef FEATURE_JUMPSTAMP
HRESULT SyncJumpStamp(NativeCodeVersion nativeCodeVersion, BOOL fEESuspended);
HRESULT UpdateJumpTarget(BOOL fEESuspended, PCODE pRejittedCode);
HRESULT UndoJumpStampNativeCode(BOOL fEESuspended);
HRESULT JumpStampNativeCode(PCODE pCode = NULL);
#endif // FEATURE_JUMPSTAMP
void LinkNativeCodeVersionNode(NativeCodeVersionNode* pNativeCodeVersionNode);
#endif // DACCESS_COMPILE
#ifdef FEATURE_JUMPSTAMP
enum JumpStampFlags
{
// There is no jump stamp in place on this method (Either because
// there is no code at all, or there is code that hasn't been
// overwritten with a jump)
JumpStampNone = 0x0,
// The method code has the jump stamp written in, and it points to the Prestub
JumpStampToPrestub = 0x1,
// The method code has the jump stamp written in, and it points to the currently
// active code version
JumpStampToActiveVersion = 0x2,
};
JumpStampFlags GetJumpStampState();
void SetJumpStampState(JumpStampFlags newState);
#endif // FEATURE_JUMPSTAMP
//read-write data for the default native code version
BOOL IsDefaultVersionActiveChild() const;
#ifndef DACCESS_COMPILE
void SetDefaultVersionActiveChildFlag(BOOL isActive);
#endif
private:
#if !defined(DACCESS_COMPILE) && defined(FEATURE_JUMPSTAMP)
INDEBUG(BOOL CodeIsSaved();)
HRESULT UpdateJumpStampHelper(BYTE* pbCode, INT64 i64OldValue, INT64 i64NewValue, BOOL fContentionPossible);
#endif
PTR_MethodDesc m_pMethodDesc;
enum MethodDescVersioningStateFlags
{
JumpStampMask = 0x3,
IsDefaultVersionActiveChildFlag = 0x4
};
BYTE m_flags;
NativeCodeVersionId m_nextId;
PTR_NativeCodeVersionNode m_pFirstVersionNode;
// The originally JITted code that was overwritten with the jmp stamp.
#ifdef FEATURE_JUMPSTAMP
BYTE m_rgSavedCode[JumpStubSize];
#endif
};
class MethodDescVersioningStateHashTraits : public NoRemoveSHashTraits<DefaultSHashTraits<PTR_MethodDescVersioningState>>
{
public:
typedef typename DefaultSHashTraits<PTR_MethodDescVersioningState>::element_t element_t;
typedef typename DefaultSHashTraits<PTR_MethodDescVersioningState>::count_t count_t;
typedef const PTR_MethodDesc key_t;
static key_t GetKey(element_t e)
{
LIMITED_METHOD_CONTRACT;
return e->GetMethodDesc();
}
static BOOL Equals(key_t k1, key_t k2)
{
LIMITED_METHOD_CONTRACT;
return k1 == k2;
}
static count_t Hash(key_t k)
{
LIMITED_METHOD_CONTRACT;
return (count_t)(size_t)dac_cast<TADDR>(k);
}
static const element_t Null() { LIMITED_METHOD_CONTRACT; return element_t(); }
static bool IsNull(const element_t &e) { LIMITED_METHOD_CONTRACT; return e == NULL; }
};
typedef SHash<MethodDescVersioningStateHashTraits> MethodDescVersioningStateHash;
class ILCodeVersioningState
{
public:
ILCodeVersioningState(PTR_Module pModule, mdMethodDef methodDef);
ILCodeVersion GetActiveVersion() const;
PTR_ILCodeVersionNode GetFirstVersionNode() const;
#ifndef DACCESS_COMPILE
void SetActiveVersion(ILCodeVersion ilActiveCodeVersion);
void LinkILCodeVersionNode(ILCodeVersionNode* pILCodeVersionNode);
#endif
struct Key
{
public:
Key();
Key(PTR_Module pModule, mdMethodDef methodDef);
size_t Hash() const;
bool operator==(const Key & rhs) const;
private:
PTR_Module m_pModule;
mdMethodDef m_methodDef;
};
Key GetKey() const;
private:
ILCodeVersion m_activeVersion;
PTR_ILCodeVersionNode m_pFirstVersionNode;
PTR_Module m_pModule;
mdMethodDef m_methodDef;
};
class ILCodeVersioningStateHashTraits : public NoRemoveSHashTraits<DefaultSHashTraits<PTR_ILCodeVersioningState>>
{
public:
typedef typename DefaultSHashTraits<PTR_ILCodeVersioningState>::element_t element_t;
typedef typename DefaultSHashTraits<PTR_ILCodeVersioningState>::count_t count_t;
typedef const ILCodeVersioningState::Key key_t;
static key_t GetKey(element_t e)
{
LIMITED_METHOD_CONTRACT;
return e->GetKey();
}
static BOOL Equals(key_t k1, key_t k2)
{
LIMITED_METHOD_CONTRACT;
return k1 == k2;
}
static count_t Hash(key_t k)
{
LIMITED_METHOD_CONTRACT;
return (count_t)k.Hash();
}
static const element_t Null() { LIMITED_METHOD_CONTRACT; return element_t(); }
static bool IsNull(const element_t &e) { LIMITED_METHOD_CONTRACT; return e == NULL; }
};
typedef SHash<ILCodeVersioningStateHashTraits> ILCodeVersioningStateHash;
class CodeVersionManager
{
friend class ILCodeVersion;
friend class PublishMethodHolder;
friend class PublishMethodTableHolder;
public:
CodeVersionManager();
void PreInit(BOOL fSharedDomain);
class TableLockHolder : public CrstHolder
{
public:
TableLockHolder(CodeVersionManager * pCodeVersionManager);
};
//Using the holder is preferable, but in some cases the holder can't be used
#ifndef DACCESS_COMPILE
void EnterLock();
void LeaveLock();
#endif
#ifdef DEBUG
BOOL LockOwnedByCurrentThread() const;
#endif
DWORD GetNonDefaultILVersionCount();
ILCodeVersionCollection GetILCodeVersions(PTR_MethodDesc pMethod);
ILCodeVersionCollection GetILCodeVersions(PTR_Module pModule, mdMethodDef methodDef);
ILCodeVersion GetActiveILCodeVersion(PTR_MethodDesc pMethod);
ILCodeVersion GetActiveILCodeVersion(PTR_Module pModule, mdMethodDef methodDef);
ILCodeVersion GetILCodeVersion(PTR_MethodDesc pMethod, ReJITID rejitId);
NativeCodeVersionCollection GetNativeCodeVersions(PTR_MethodDesc pMethod) const;
NativeCodeVersion GetNativeCodeVersion(PTR_MethodDesc pMethod, PCODE codeStartAddress) const;
PTR_ILCodeVersioningState GetILCodeVersioningState(PTR_Module pModule, mdMethodDef methodDef) const;
PTR_MethodDescVersioningState GetMethodDescVersioningState(PTR_MethodDesc pMethod) const;
#ifndef DACCESS_COMPILE
struct CodePublishError
{
Module* pModule;
mdMethodDef methodDef;
MethodDesc* pMethodDesc;
HRESULT hrStatus;
};
HRESULT AddILCodeVersion(Module* pModule, mdMethodDef methodDef, ReJITID rejitId, ILCodeVersion* pILCodeVersion);
HRESULT AddNativeCodeVersion(ILCodeVersion ilCodeVersion, MethodDesc* pClosedMethodDesc, NativeCodeVersion* pNativeCodeVersion);
HRESULT DoJumpStampIfNecessary(MethodDesc* pMD, PCODE pCode);
PCODE PublishVersionableCodeIfNecessary(MethodDesc* pMethodDesc, BOOL fCanBackpatchPrestub);
HRESULT PublishNativeCodeVersion(MethodDesc* pMethodDesc, NativeCodeVersion nativeCodeVersion, BOOL fEESuspended);
HRESULT GetOrCreateMethodDescVersioningState(MethodDesc* pMethod, MethodDescVersioningState** ppMethodDescVersioningState);
HRESULT GetOrCreateILCodeVersioningState(Module* pModule, mdMethodDef methodDef, ILCodeVersioningState** ppILCodeVersioningState);
HRESULT SetActiveILCodeVersions(ILCodeVersion* pActiveVersions, DWORD cActiveVersions, BOOL fEESuspended, CDynArray<CodePublishError> * pPublishErrors);
static HRESULT AddCodePublishError(Module* pModule, mdMethodDef methodDef, MethodDesc* pMD, HRESULT hrStatus, CDynArray<CodePublishError> * pErrors);
static HRESULT AddCodePublishError(NativeCodeVersion nativeCodeVersion, HRESULT hrStatus, CDynArray<CodePublishError> * pErrors);
static void OnAppDomainExit(AppDomain* pAppDomain);
#endif
private:
#ifndef DACCESS_COMPILE
static HRESULT EnumerateClosedMethodDescs(MethodDesc* pMD, CDynArray<MethodDesc*> * pClosedMethodDescs, CDynArray<CodePublishError> * pUnsupportedMethodErrors);
static HRESULT EnumerateDomainClosedMethodDescs(
AppDomain * pAppDomainToSearch,
Module* pModuleContainingMethodDef,
mdMethodDef methodDef,
CDynArray<MethodDesc*> * pClosedMethodDescs,
CDynArray<CodePublishError> * pUnsupportedMethodErrors);
static HRESULT GetNonVersionableError(MethodDesc* pMD);
void ReportCodePublishError(CodePublishError* pErrorRecord);
void ReportCodePublishError(Module* pModule, mdMethodDef methodDef, MethodDesc* pMD, HRESULT hrStatus);
#endif
//Module,MethodDef -> ILCodeVersioningState
ILCodeVersioningStateHash m_ilCodeVersioningStateMap;
//closed MethodDesc -> MethodDescVersioningState
MethodDescVersioningStateHash m_methodDescVersioningStateMap;
CrstExplicitInit m_crstTable;
};
#endif // FEATURE_CODE_VERSIONING
//
// These holders are used by runtime code that is making new code
// available for execution, either by publishing jitted code
// or restoring NGEN code. It ensures the publishing is synchronized
// with rejit requests
//
class PublishMethodHolder
{
public:
#if !defined(FEATURE_CODE_VERSIONING) || defined(DACCESS_COMPILE) || defined(CROSSGEN_COMPILE)
PublishMethodHolder(MethodDesc* pMethod, PCODE pCode) { }
#else
PublishMethodHolder(MethodDesc* pMethod, PCODE pCode);
~PublishMethodHolder();
#endif
private:
#if defined(FEATURE_CODE_VERSIONING)
MethodDesc * m_pMD;
HRESULT m_hr;
#endif
};
class PublishMethodTableHolder
{
public:
#if !defined(FEATURE_CODE_VERSIONING) || defined(DACCESS_COMPILE) || defined(CROSSGEN_COMPILE)
PublishMethodTableHolder(MethodTable* pMethodTable) { }
#else
PublishMethodTableHolder(MethodTable* pMethodTable);
~PublishMethodTableHolder();
#endif
private:
#if defined(FEATURE_CODE_VERSIONING) && !defined(DACCESS_COMPILE)
MethodTable* m_pMethodTable;
CDynArray<CodeVersionManager::CodePublishError> m_errors;
#endif
};
#endif // CODE_VERSION_H
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