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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: perfinfo.cpp
//
#include "common.h"
#if defined(FEATURE_PERFMAP) && !defined(DACCESS_COMPILE)
#include "perfinfo.h"
#include "pal.h"
PerfInfo::PerfInfo(int pid)
: m_Stream(nullptr)
{
LIMITED_METHOD_CONTRACT;
SString tempPath;
if (!WszGetTempPath(tempPath))
{
return;
}
SString path;
path.Printf("%Sperfinfo-%d.map", tempPath.GetUnicode(), pid);
OpenFile(path);
}
// Logs image loads into the process' perfinfo-%d.map file
void PerfInfo::LogImage(PEFile* pFile, WCHAR* guid)
{
CONTRACTL
{
THROWS;
GC_NOTRIGGER;
MODE_PREEMPTIVE;
PRECONDITION(pFile != nullptr);
PRECONDITION(guid != nullptr);
} CONTRACTL_END;
SString value;
const SString& path = pFile->GetPath();
if (path.IsEmpty())
{
return;
}
SIZE_T baseAddr = 0;
if (pFile->IsILImageReadyToRun())
{
PEImageLayout *pLoadedLayout = pFile->GetLoaded();
if (pLoadedLayout)
{
baseAddr = (SIZE_T)pLoadedLayout->GetBase();
}
}
value.Printf("%S%c%S%c%p", path.GetUnicode(), sDelimiter, guid, sDelimiter, baseAddr);
SString command;
command.Printf("%s", "ImageLoad");
WriteLine(command, value);
}
// Writes a command line, with "type" being the type of command, with "value" as the command's corresponding instructions/values. This is to be used to log specific information, e.g. LogImage
void PerfInfo::WriteLine(SString& type, SString& value)
{
CONTRACTL
{
THROWS;
GC_NOTRIGGER;
MODE_PREEMPTIVE;
} CONTRACTL_END;
if (m_Stream == nullptr)
{
return;
}
SString line;
line.Printf("%S%c%S%c\n",
type.GetUnicode(), sDelimiter, value.GetUnicode(), sDelimiter);
EX_TRY
{
StackScratchBuffer scratch;
const char* strLine = line.GetANSI(scratch);
ULONG inCount = line.GetCount();
ULONG outCount;
m_Stream->Write(strLine, inCount, &outCount);
if (inCount != outCount)
{
// error encountered
}
}
EX_CATCH{} EX_END_CATCH(SwallowAllExceptions);
}
// Opens a file ready to be written in.
void PerfInfo::OpenFile(SString& path)
{
STANDARD_VM_CONTRACT;
m_Stream = new (nothrow) CFileStream();
if (m_Stream != nullptr)
{
HRESULT hr = m_Stream->OpenForWrite(path.GetUnicode());
if (FAILED(hr))
{
delete m_Stream;
m_Stream = nullptr;
}
}
}
PerfInfo::~PerfInfo()
{
LIMITED_METHOD_CONTRACT;
delete m_Stream;
m_Stream = nullptr;
}
#endif
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