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//
// Copyright (c) Microsoft. All rights reserved.
// Licensed under the MIT license. See LICENSE file in the project root for full license information.
//
#ifndef _H_CONTEXT_
#define _H_CONTEXT_
#include "specialstatics.h"
#include "fcall.h"
#ifdef FEATURE_COMINTEROP
class RCWCache;
#endif // FEATURE_COMINTEROP
typedef DPTR(class Context) PTR_Context;
#ifdef FEATURE_REMOTING
class Context
{
public:
enum CallbackType
{
Wait_callback = 0,
MonitorWait_callback = 1,
ADTransition_callback = 2,
SignalAndWait_callback = 3
};
typedef struct
{
int numWaiters;
HANDLE* waitHandles;
BOOL waitAll;
DWORD millis;
BOOL alertable;
DWORD* pResult;
} WaitArgs;
typedef struct
{
HANDLE* waitHandles;
DWORD millis;
BOOL alertable;
DWORD* pResult;
} SignalAndWaitArgs;
typedef struct
{
INT32 millis;
PendingSync* syncState;
BOOL* pResult;
} MonitorWaitArgs;
typedef struct
{
enum CallbackType callbackId;
void* callbackData;
} CallBackInfo;
typedef void (*ADCallBackFcnType)(LPVOID);
struct ADCallBackArgs
{
ADCallBackFcnType pTarget;
LPVOID pArguments;
};
#ifdef DACCESS_COMPILE
void EnumMemoryRegions(CLRDataEnumMemoryFlags flags);
#endif
friend class Thread;
friend class ThreadNative;
friend class ContextBaseObject;
friend class CRemotingServices;
friend struct PendingSync;
Context(AppDomain *pDomain);
~Context();
static void Initialize();
PTR_AppDomain GetDomain()
{
LIMITED_METHOD_DAC_CONTRACT;
return m_pDomain;
}
// Get and Set the exposed System.Runtime.Remoting.Context
// object which corresponds to this context.
OBJECTREF GetExposedObject();
OBJECTREF GetExposedObjectRaw();
PTR_Object GetExposedObjectRawUnchecked();
PTR_PTR_Object GetExposedObjectRawUncheckedPtr();
void SetExposedObject(OBJECTREF exposed);
// Query whether the exposed object exists
BOOL IsExposedObjectSet();
static LPVOID GetStaticFieldAddress(FieldDesc *pFD);
PTR_VOID GetStaticFieldAddrNoCreate(FieldDesc *pFD);
static Context* CreateNewContext(AppDomain *pDomain);
static void FreeContext(Context* victim)
{
CONTRACTL
{
NOTHROW;
GC_NOTRIGGER;
MODE_ANY;
PRECONDITION(CheckPointer(victim));
}
CONTRACTL_END;
delete victim;
}
static Context* GetExecutionContext(OBJECTREF pObj);
static void RequestCallBack(ADID appDomain, Context* targetCtxID, void* privateData);
// <TODO>Made public to get around the context GC issue </TODO>
static BOOL ValidateContext(Context *pCtx);
inline STATIC_DATA *GetSharedStaticData()
{
LIMITED_METHOD_CONTRACT;
return m_pSharedStaticData;
}
inline void SetSharedStaticData(STATIC_DATA *pData)
{
LIMITED_METHOD_CONTRACT;
m_pSharedStaticData = PTR_STATIC_DATA(pData);
}
inline STATIC_DATA *GetUnsharedStaticData()
{
LIMITED_METHOD_CONTRACT;
return m_pUnsharedStaticData;
}
inline void SetUnsharedStaticData(STATIC_DATA *pData)
{
LIMITED_METHOD_CONTRACT;
m_pUnsharedStaticData = PTR_STATIC_DATA(pData);
}
// Functions called from BCL on a managed context object
static FCDECL2(void, SetupInternalContext, ContextBaseObject* pThisUNSAFE, CLR_BOOL bDefault);
static FCDECL1(void, CleanupInternalContext, ContextBaseObject* pThisUNSAFE);
static FCDECL1(void, ExecuteCallBack, LPVOID privateData);
private:
// Static helper functions:
static void ExecuteWaitCallback(WaitArgs* waitArgs);
static void ExecuteMonitorWaitCallback(MonitorWaitArgs* waitArgs);
static void ExecuteSignalAndWaitCallback(SignalAndWaitArgs* signalAndWaitArgs);
void GetStaticFieldAddressSpecial(FieldDesc *pFD, MethodTable *pMT, int *pSlot, LPVOID *ppvAddress);
PTR_VOID CalculateAddressForManagedStatic(int slot);
// Static Data Members:
static CrstStatic s_ContextCrst;
// Non-static Data Members:
// Pointer to native context static data
PTR_STATIC_DATA m_pUnsharedStaticData;
// Pointer to native context static data
PTR_STATIC_DATA m_pSharedStaticData;
typedef SimpleList<OBJECTHANDLE> ObjectHandleList;
ObjectHandleList m_PinnedContextStatics;
// <TODO> CTS. Domains should really be policies on a context and not
// entry in the context object. When AppDomains become an attribute of
// a context then add the policy.</TODO>
PTR_AppDomain m_pDomain;
OBJECTHANDLE m_ExposedObjectHandle;
DWORD m_Signature;
// NOTE: please maintain the signature as the last member field!!!
};
FCDECL0(LPVOID, GetPrivateContextsPerfCountersEx);
#else // FEATURE_REMOTING
// if FEATURE_REMOTING is not defined there will be only the default context for each appdomain
// and contexts will not be exposed to users (so there will be no managed Context class)
class Context
{
PTR_AppDomain m_pDomain;
public:
#ifndef DACCESS_COMPILE
Context(AppDomain *pDomain)
{
m_pDomain = pDomain;
}
#endif
PTR_AppDomain GetDomain()
{
LIMITED_METHOD_DAC_CONTRACT;
return m_pDomain;
}
static void Initialize()
{
}
typedef void (*ADCallBackFcnType)(LPVOID);
#ifdef DACCESS_COMPILE
void EnumMemoryRegions(CLRDataEnumMemoryFlags flags);
#endif
};
#endif // FEATURE_REMOTING
#endif
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