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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.
//
#include "standardpch.h"
#include "methodcontext.h"
#include "methodcontextiterator.h"
bool MethodContextIterator::Initialize(const char* fileName)
{
m_hFile = CreateFileA(fileName, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL|FILE_FLAG_SEQUENTIAL_SCAN, NULL);
if (m_hFile == INVALID_HANDLE_VALUE)
{
LogError("Failed to open file '%s'. GetLastError()=%u", fileName, GetLastError());
return false;
}
LARGE_INTEGER DataTemp;
if (GetFileSizeEx(m_hFile, &DataTemp)==0)
{
LogError("GetFileSizeEx failed. GetLastError()=%u", GetLastError());
CloseHandle(m_hFile);
m_hFile = INVALID_HANDLE_VALUE;
return false;
}
m_fileSize = DataTemp.QuadPart;
if (m_progressReport)
{
m_timer->Start();
}
return true;
}
bool MethodContextIterator::Destroy()
{
bool ret = true; // assume success
if (m_hFile != INVALID_HANDLE_VALUE)
{
if (!CloseHandle(m_hFile))
{
LogError("CloseHandle failed. GetLastError()=%u", GetLastError());
ret = false;
}
m_hFile = INVALID_HANDLE_VALUE;
}
delete m_mc;
m_mc = nullptr;
if (m_index < m_indexCount)
{
LogWarning("Didn't use all of index count input: %d < %d (i.e., didn't see MC #%d)",
m_index, m_indexCount, m_indexes[m_index]);
}
delete m_timer;
m_timer = nullptr;
return ret;
}
bool MethodContextIterator::MoveNext()
{
if (m_mc != nullptr)
{
delete m_mc;
m_mc = nullptr;
}
while (true)
{
// Figure out where the pointer is currently.
LARGE_INTEGER pos;
pos.QuadPart = 0;
if (SetFilePointerEx(m_hFile, pos, &m_pos, FILE_CURRENT) == 0)
{
LogError("SetFilePointerEx failed. GetLastError()=%u", GetLastError());
return false; // any failure causes us to bail out.
}
if (m_pos.QuadPart >= m_fileSize)
{
return false;
}
// Load the current method context.
m_methodContextNumber++;
if (m_progressReport)
{
if (m_methodContextNumber % 500 == 0)
{
m_timer->Stop();
LogVerbose("Loaded %d at %d per second", m_methodContextNumber, (int)((double)500 / m_timer->GetSeconds()));
m_timer->Start();
}
}
if (!MethodContext::Initialize(m_methodContextNumber, m_hFile, &m_mc))
return false;
// If we have an array of indexes, skip the loaded indexes that have not been specified.
if (m_indexCount == -1)
{
break;
}
else if (m_index == m_indexCount)
{
return false; // we're beyond the array of indexes
}
else if (m_index < m_indexCount)
{
if (m_indexes[m_index] == m_methodContextNumber)
{
m_index++;
break;
}
}
}
return true;
}
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