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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.
// DebugInfoStore
#ifndef __DebugInfoStore_H_
#define __DebugInfoStore_H_
// Debugging information is described in CorInfo.h
#include "corinfo.h"
#include "nibblestream.h"
//-----------------------------------------------------------------------------
// Information to request Debug info.
//-----------------------------------------------------------------------------
class DebugInfoRequest
{
public:
#ifdef _DEBUG
// Must initialize via an Init*() function, not just a ctor.
// In debug, ctor sets fields to values that will cause asserts if not initialized.
DebugInfoRequest()
{
SUPPORTS_DAC;
m_pMD = NULL;
m_addrStart = NULL;
}
#endif
// Eventually we may have many ways to initialize a request.
// Init given a method desc and starting address for a native code blob.
void InitFromStartingAddr(MethodDesc * pDesc, PCODE addrCode);
MethodDesc * GetMD() const { LIMITED_METHOD_DAC_CONTRACT; return m_pMD; }
PCODE GetStartAddress() const { LIMITED_METHOD_DAC_CONTRACT; return m_addrStart; }
protected:
MethodDesc * m_pMD;
PCODE m_addrStart;
};
//-----------------------------------------------------------------------------
// A Debug-Info Store abstracts the storage of debugging information
//-----------------------------------------------------------------------------
// We pass the IDS an allocator which it uses to hand the data back.
// pData is data the allocator may use for 'new'.
// Eg, perhaps we have multiple heaps (eg, loader-heaps per appdomain).
typedef BYTE* (*FP_IDS_NEW)(void * pData, size_t cBytes);
//-----------------------------------------------------------------------------
// Utility routines used for compression
// Note that the compression is just an implementation detail of the stores,
// and so these are just utility routines exposed to the stores.
//-----------------------------------------------------------------------------
class CompressDebugInfo
{
public:
// Compress incoming data and write it to the provided NibbleWriter.
static void CompressBoundaries(
IN ULONG32 cMap,
IN ICorDebugInfo::OffsetMapping *pMap,
IN OUT NibbleWriter * pWriter
);
static void CompressVars(
IN ULONG32 cVars,
IN ICorDebugInfo::NativeVarInfo *vars,
IN OUT NibbleWriter * pBuffer
);
// Stores the result into SBuffer (used by NGen), or in LoaderHeap (used by JIT)
static PTR_BYTE CompressBoundariesAndVars(
IN ICorDebugInfo::OffsetMapping * pOffsetMapping,
IN ULONG iOffsetMapping,
IN ICorDebugInfo::NativeVarInfo * pNativeVarInfo,
IN ULONG iNativeVarInfo,
IN OUT SBuffer * pDebugInfoBuffer,
IN LoaderHeap * pLoaderHeap
);
public:
// Uncompress data supplied by Compress functions.
static void RestoreBoundariesAndVars(
IN FP_IDS_NEW fpNew, IN void * pNewData,
IN PTR_BYTE pDebugInfo,
OUT ULONG32 * pcMap, // number of entries in ppMap
OUT ICorDebugInfo::OffsetMapping **ppMap, // pointer to newly allocated array
OUT ULONG32 *pcVars,
OUT ICorDebugInfo::NativeVarInfo **ppVars
);
#ifdef DACCESS_COMPILE
static void EnumMemoryRegions(CLRDataEnumMemoryFlags flags, PTR_BYTE pDebugInfo);
#endif
};
//-----------------------------------------------------------------------------
// Debug-Info-manager. This is like a process-wide store.
// There should be only 1 instance of this and it's process-wide.
// It will delegate to sub-stores as needed
//-----------------------------------------------------------------------------
class DebugInfoManager
{
public:
static BOOL GetBoundariesAndVars(
const DebugInfoRequest & request,
IN FP_IDS_NEW fpNew, IN void * pNewData,
OUT ULONG32 * pcMap,
OUT ICorDebugInfo::OffsetMapping ** ppMap,
OUT ULONG32 * pcVars,
OUT ICorDebugInfo::NativeVarInfo ** ppVars);
#ifdef DACCESS_COMPILE
static void EnumMemoryRegionsForMethodDebugInfo(CLRDataEnumMemoryFlags flags, MethodDesc * pMD);
#endif
};
#endif // __DebugInfoStore_H_
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