///////////////////////////////////////////////////////////////////////////////
// MuldeR's Utilities for Qt
-// Copyright (C) 2004-2014 LoRd_MuldeR <MuldeR2@GMX.de>
+// Copyright (C) 2004-2015 LoRd_MuldeR <MuldeR2@GMX.de>
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
}
///////////////////////////////////////////////////////////////////////////////
+// COMPUTE PARITY
+///////////////////////////////////////////////////////////////////////////////
+
+/*
+ * Compute parity in parallel
+ * http://www.graphics.stanford.edu/~seander/bithacks.html#ParityParallel
+ */
+bool MUtils::parity(quint32 value)
+{
+ value ^= value >> 16;
+ value ^= value >> 8;
+ value ^= value >> 4;
+ value &= 0xf;
+ return ((0x6996 >> value) & 1) != 0;
+}
+
+///////////////////////////////////////////////////////////////////////////////
// TEMP FOLDER
///////////////////////////////////////////////////////////////////////////////
return NULL;
}
-static void temp_folder_cleanup_helper(const QString &tempPath)
+static bool temp_folder_cleanup_helper(const QString &tempPath)
{
- bool okay = false;
- for(int i = 0; i < 32; i++)
+ size_t delay = 1;
+ static const size_t MAX_DELAY = 8192;
+ forever
{
+ QDir::setCurrent(QDir::rootPath());
if(MUtils::remove_directory(tempPath, true))
{
- okay = true;
- break;
+ return true;
+ }
+ else
+ {
+ if(delay > MAX_DELAY)
+ {
+ return false;
+ }
+ MUtils::OS::sleep_ms(delay);
+ delay *= 2;
}
- MUtils::OS::sleep_ms(125);
- }
- if(!okay)
- {
- MUtils::OS::system_message_wrn(L"Temp Cleaner", L"Warning: Not all temporary files could be removed!");
}
}
{
const QString tempPath = g_temp_folder_file->getPath();
g_temp_folder_file.reset(NULL);
- temp_folder_cleanup_helper(tempPath);
+ if(!temp_folder_cleanup_helper(tempPath))
+ {
+ MUtils::OS::system_message_wrn(L"Temp Cleaner", L"Warning: Not all temporary files could be removed!");
+ }
}
}
// REMOVE DIRECTORY / FILE
///////////////////////////////////////////////////////////////////////////////
+static const QFile::Permissions FILE_PERMISSIONS_NONE = QFile::ReadOther | QFile::WriteOther;
+
bool MUtils::remove_file(const QString &fileName)
{
QFileInfo fileInfo(fileName);
for(int i = 0; i < 32; i++)
{
QFile file(fileName);
- file.setPermissions(QFile::ReadOther | QFile::WriteOther);
+ file.setPermissions(FILE_PERMISSIONS_NONE);
if((!(fileInfo.exists() && fileInfo.isFile())) || file.remove())
{
return true;
return false;
}
-static bool remove_directory_helper(QDir folder)
+static bool remove_directory_helper(const QDir &folder)
{
if(!folder.exists())
{
return true;
}
-
const QString dirName = folder.dirName();
- if(dirName.isEmpty() || (!folder.cdUp()))
+ if(!dirName.isEmpty())
{
- return false;
+ QDir parent(folder);
+ if(parent.cdUp())
+ {
+ QFile::setPermissions(folder.absolutePath(), FILE_PERMISSIONS_NONE);
+ if(parent.rmdir(dirName))
+ {
+ return true;
+ }
+ }
}
-
- return folder.rmdir(dirName);
+ return false;
}
bool MUtils::remove_directory(const QString &folderPath, const bool &recursive)
for(int i = 0; i < 32; i++)
{
- if(!folder.exists())
+ if(remove_directory_helper(folder))
{
return true;
}
- const QString dirName = folder.dirName();
- if(!dirName.isEmpty())
- {
- QDir parent(folder);
- if(parent.cdUp())
- {
- if(parent.rmdir(dirName))
- {
- return true;
- }
- }
- }
folder.refresh();
}
static const bool MY_DEBUG_FLAG = MUTILS_DEBUG;
static const char *const MY_BUILD_KEY = __DATE__"@"__TIME__;
- if(strncmp(buildKey, MY_BUILD_KEY, 14) || (MY_DEBUG_FLAG != debug))
+ if(strncmp(buildKey, MY_BUILD_KEY, 13) || (MY_DEBUG_FLAG != debug))
{
MUtils::OS::system_message_err(L"MUtils", L"FATAL ERROR: MUtils library version mismatch detected!");
MUtils::OS::system_message_wrn(L"MUtils", L"Please re-build the complete solution in order to fix this issue!");