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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: REJIT.H
//
//
// REJIT.H defines the class and structures used to store info about rejitted
// methods. See comment at top of rejit.cpp for more information on how
// rejit works.
//
// ===========================================================================
#ifndef _REJIT_H_
#define _REJIT_H_
#include "common.h"
#include "contractimpl.h"
#include "shash.h"
#include "corprof.h"
#include "codeversion.h"
class ReJitManager;
class MethodDesc;
class ClrDataAccess;
#ifdef FEATURE_REJIT
//---------------------------------------------------------------------------------------
// The CLR's implementation of ICorProfilerFunctionControl, which is passed
// to the profiler. The profiler calls methods on this to specify the IL and
// codegen flags for a given rejit request.
//
class ProfilerFunctionControl : public ICorProfilerFunctionControl
{
public:
ProfilerFunctionControl(LoaderHeap * pHeap);
virtual ~ProfilerFunctionControl();
// IUnknown functions
virtual HRESULT STDMETHODCALLTYPE QueryInterface(REFIID id, void** pInterface);
virtual ULONG STDMETHODCALLTYPE AddRef();
virtual ULONG STDMETHODCALLTYPE Release();
// ICorProfilerFunctionControl functions
virtual HRESULT STDMETHODCALLTYPE SetCodegenFlags(DWORD flags);
virtual HRESULT STDMETHODCALLTYPE SetILFunctionBody(ULONG cbNewILMethodHeader, LPCBYTE pbNewILMethodHeader);
virtual HRESULT STDMETHODCALLTYPE SetILInstrumentedCodeMap(ULONG cILMapEntries, COR_IL_MAP * rgILMapEntries);
// Accessors
DWORD GetCodegenFlags();
LPBYTE GetIL();
ULONG GetInstrumentedMapEntryCount();
COR_IL_MAP* GetInstrumentedMapEntries();
protected:
Volatile<LONG> m_refCount;
LoaderHeap * m_pHeap;
DWORD m_dwCodegenFlags;
ULONG m_cbIL;
// This pointer will get copied into SharedReJitInfo::m_pbIL and owned there.
LPBYTE m_pbIL;
ULONG m_cInstrumentedMapEntries;
COR_IL_MAP * m_rgInstrumentedMapEntries;
};
#endif // FEATURE_REJIT
//---------------------------------------------------------------------------------------
// The big honcho. One of these per AppDomain, plus one for the
// SharedDomain. Contains the hash table of ReJitInfo structures to manage
// every rejit and revert request for its owning domain.
//
class ReJitManager
{
friend class ClrDataAccess;
friend class DacDbiInterfaceImpl;
private:
#ifdef FEATURE_REJIT
// One global crst (for the entire CLR instance) to synchronize
// cross-ReJitManager operations, such as batch calls to RequestRejit and
// RequestRevert (which modify multiple ReJitManager instances).
static CrstStatic s_csGlobalRequest;
#endif //FEATURE_REJIT
public:
static void InitStatic();
static BOOL IsReJITEnabled();
static HRESULT RequestReJIT(
ULONG cFunctions,
ModuleID rgModuleIDs[],
mdMethodDef rgMethodDefs[]);
static HRESULT RequestRevert(
ULONG cFunctions,
ModuleID rgModuleIDs[],
mdMethodDef rgMethodDefs[],
HRESULT rgHrStatuses[]);
static HRESULT ConfigureILCodeVersion(ILCodeVersion ilCodeVersion);
static CORJIT_FLAGS JitFlagsFromProfCodegenFlags(DWORD dwCodegenFlags);
static ReJITID GetReJitId(PTR_MethodDesc pMD, PCODE pCodeStart);
static ReJITID GetReJitIdNoLock(PTR_MethodDesc pMD, PCODE pCodeStart);
static HRESULT GetReJITIDs(PTR_MethodDesc pMD, ULONG cReJitIds, ULONG * pcReJitIds, ReJITID reJitIds[]);
#ifdef FEATURE_REJIT
#ifndef DACCESS_COMPILE
static void ReportReJITError(CodeVersionManager::CodePublishError* pErrorRecord);
static void ReportReJITError(Module* pModule, mdMethodDef methodDef, MethodDesc* pMD, HRESULT hrStatus);
#endif
private:
static HRESULT UpdateActiveILVersions(
ULONG cFunctions,
ModuleID rgModuleIDs[],
mdMethodDef rgMethodDefs[],
HRESULT rgHrStatuses[],
BOOL fIsRevert);
struct CodeActivationBatch
{
CodeActivationBatch(CodeVersionManager * pCodeVersionManager) :
m_pCodeVersionManager(pCodeVersionManager)
{}
CodeVersionManager* m_pCodeVersionManager;
CDynArray<ILCodeVersion> m_methodsToActivate;
};
class CodeActivationBatchTraits : public DefaultSHashTraits<CodeActivationBatch *>
{
public:
typedef DefaultSHashTraits<CodeActivationBatch *> PARENT;
typedef PARENT::element_t element_t;
typedef PARENT::count_t count_t;
typedef CodeVersionManager * key_t;
static key_t GetKey(const element_t &e) { return e->m_pCodeVersionManager; }
static BOOL Equals(key_t k1, key_t k2) { return (k1 == k2); }
static count_t Hash(key_t k) { return (count_t)k; }
static bool IsNull(const element_t &e) { return (e == NULL); }
};
static HRESULT BindILVersion(
CodeVersionManager* pCodeVersionManager,
PTR_Module pModule,
mdMethodDef methodDef,
ILCodeVersion *pILCodeVersion);
#endif // FEATURE_REJIT
};
#include "rejit.inl"
#endif // _REJIT_H_
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