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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: umthunkhash.cpp
//
//
#include "common.h"
#include "umthunkhash.h"
#ifdef FEATURE_MIXEDMODE
UMThunkHash::UMThunkHash(Module *pModule, AppDomain *pDomain) :
CClosedHashBase(
#ifdef _DEBUG
3,
#else
17, // CClosedHashTable will grow as necessary
#endif
sizeof(UTHEntry),
FALSE
),
m_crst(CrstUMThunkHash)
{
WRAPPER_NO_CONTRACT;
m_pModule = pModule;
m_dwAppDomainId = pDomain->GetId();
}
UMThunkHash::~UMThunkHash()
{
CONTRACT_VOID
{
NOTHROW;
DESTRUCTOR_CHECK;
GC_TRIGGERS;
FORBID_FAULT;
MODE_ANY;
}
CONTRACT_END
#ifndef DACCESS_COMPILE
UTHEntry *phe = (UTHEntry*)GetFirst();
while (phe) {
DeleteExecutable(phe->m_pUMEntryThunk);
phe->m_UMThunkMarshInfo.~UMThunkMarshInfo();
phe = (UTHEntry*)GetNext((BYTE*)phe);
}
#endif
RETURN;
}
LPVOID UMThunkHash::GetUMThunk(LPVOID pTarget, PCCOR_SIGNATURE pSig, DWORD cSig)
{
CONTRACT (LPVOID)
{
INSTANCE_CHECK;
THROWS;
GC_TRIGGERS;
MODE_ANY;
POSTCONDITION(CheckPointer(RETVAL, NULL_OK));
}
CONTRACT_END
UTHEntry *phe;
CrstHolder ch(&m_crst);
UTHKey key;
key.m_pTarget = pTarget;
key.m_pSig = pSig;
key.m_cSig = cSig;
phe =(UTHEntry *)Find((LPVOID)&key);
#ifndef DACCESS_COMPILE
if (phe == NULL)
{
NewExecutableHolder<UMEntryThunk> uET= new (executable) UMEntryThunk();
bool bNew = FALSE;
phe = (UTHEntry *)FindOrAdd((LPVOID)&key,bNew);
if (phe != NULL)
{
_ASSERTE(bNew); // we are under lock
phe->m_pUMEntryThunk=uET.Extract();
//nothrow
phe->m_UMThunkMarshInfo.LoadTimeInit(Signature(pSig, cSig), m_pModule);
phe->m_pUMEntryThunk->LoadTimeInit((PCODE)pTarget, NULL, &(phe->m_UMThunkMarshInfo),
MethodTable::GetMethodDescForSlotAddress((PCODE)pTarget),
m_dwAppDomainId);
phe->m_key = key;
phe->m_status = USED;
}
}
#endif //DACESS_COMPILE
if (phe)
RETURN (LPVOID)(phe->m_pUMEntryThunk->GetCode());
else
RETURN NULL;
}
unsigned int UMThunkHash::Hash(void const *pData)
{
LIMITED_METHOD_CONTRACT;
UTHKey *pKey = (UTHKey*)pData;
return (ULONG)(size_t)(pKey->m_pTarget);
}
inline unsigned int UMThunkHash::Compare( // 0, -1, or 1.
void const *pData, // Raw key data on lookup.
BYTE *pElement) // The element to compare data against.
{
CONTRACTL
{
NOTHROW;
GC_TRIGGERS;
MODE_ANY;
}
CONTRACTL_END;
UTHKey *pkey1 = (UTHKey*)pData;
UTHKey *pkey2 = &( ((UTHEntry*)pElement)->m_key );
if (pkey1->m_pTarget != pkey2->m_pTarget)
return 1;
if (S_OK != MetaSig::CompareMethodSigsNT(pkey1->m_pSig, pkey1->m_cSig, m_pModule, NULL, pkey2->m_pSig, pkey2->m_cSig, m_pModule, NULL))
return 1;
return 0;
}
CClosedHashBase::ELEMENTSTATUS UMThunkHash::Status( // The status of the entry.
BYTE *pElement) // The element to check.
{
LIMITED_METHOD_CONTRACT;
return ((UTHEntry*)pElement)->m_status;
}
//*****************************************************************************
// Sets the status of the given element.
//*****************************************************************************
void UMThunkHash::SetStatus(
BYTE *pElement, // The element to set status for.
ELEMENTSTATUS eStatus) // New status.
{
LIMITED_METHOD_CONTRACT;
((UTHEntry*)pElement)->m_status = eStatus;
}
//*****************************************************************************
// Returns the internal key value for an element.
//*****************************************************************************
void *UMThunkHash::GetKey( // The data to hash on.
BYTE *pElement) // The element to return data ptr for.
{
LIMITED_METHOD_CONTRACT;
return (BYTE*) &(((UTHEntry*)pElement)->m_key);
}
#endif // FEATURE_MIXEDMODE
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