/*
Derived from source code of TrueCrypt 7.1a, which is
Copyright (c) 2008-2012 TrueCrypt Developers Association and which is governed
by the TrueCrypt License 3.0.
Modifications and additions to the original source code (contained in this file)
and all other portions of this file are Copyright (c) 2013-2017 IDRIX
and are governed by the Apache License 2.0 the full text of which is
contained in the file License.txt included in VeraCrypt binary and source
code distribution packages.
*/
#ifndef TC_HEADER_Main_AppMain
#define TC_HEADER_Main_AppMain
#include "Main.h"
#include "UserInterface.h"
#include "UserInterfaceType.h"
namespace VeraCrypt
{
class Application
{
public:
static wxApp* CreateConsoleApp ();
static wxApp* CreateGuiApp ();
static FilePath GetConfigFilePath (const wxString &configFileName, bool createConfigDir = false);
static DirectoryPath GetExecutableDirectory ();
static FilePath GetExecutablePath ();
static int GetExitCode () { return ExitCode; }
static wstring GetName () { return L"VeraCrypt"; }
static UserInterface *GetUserInterface () { return mUserInterface; }
static UserInterfaceType::Enum GetUserInterfaceType () { return mUserInterfaceType; }
static void Initialize (UserInterfaceType::Enum type);
static void SetExitCode (int code) { ExitCode = code; }
protected:
static int ExitCode;
static UserInterface *mUserInterface;
static UserInterfaceTyp/*
Copyright (c) 2008-2009 TrueCrypt Developers Association. All rights reserved.
Governed by the TrueCrypt License 3.0 the full text of which is contained in
the file License.txt included in TrueCrypt binary and source code distribution
packages.
*/
#ifdef TC_UNIX
# include <unistd.h>
#endif
#ifdef TC_MACOSX
# include <sys/types.h>
# include <sys/sysctl.h>
#endif
#include "Platform/SyncEvent.h"
#include "Platform/SystemLog.h"
#include "Common/Crypto.h"
#include "EncryptionThreadPool.h"
namespace VeraCrypt
{
void EncryptionThreadPool::DoWork (WorkType::Enum type, const EncryptionMode *encryptionMode, byte *data, uint64 startUnitNo, uint64 unitCount, size_t sectorSize)
{
size_t fragmentCount;
size_t unitsPerFragment;
size_t remainder;
byte *fragmentData;
uint64 fragmentStartUnitNo;
WorkItem *workItem;
WorkItem *firstFragmentWorkItem;
if (unitCount == 0)
return;
if (!ThreadPoolRunning || unitCount == 1)
{
switch (type)
{
case WorkType::DecryptDataUnits:
encryptionMode->DecryptSectorsCurrentThread (data, startUnitNo, unitCount, sectorSize);
break;
case WorkType::EncryptDataUnits:
encryptionMode->EncryptSectorsCurrentThread (data, startUnitNo, unitCount, sectorSize);
break;
default:
throw ParameterIncorrect (SRC_POS);
}
return;
}
if (unitCount <= ThreadCount)
{
fragmentCount = (size_t) unitCount;
unitsPerFragment = 1;
remainder = 0;
}
else
{
fragmentCount = ThreadCount;
unitsPerFragment = (size_t) unitCount / ThreadCount;
remainder = (size_t) unitCount % ThreadCount;
if (remainder > 0)
++unitsPerFragment;
}
fragmentData = data;
fragmentStartUnitNo = startUnitNo;
{
ScopeLock lock (EnqueueMutex);
firstFragmentWorkItem = &WorkItemQueue[EnqueuePosition];
while (firstFragmentWorkItem->State != WorkItem::State::Free)
{
WorkItemCompletedEvent.Wait();
}
firstFragmentWorkItem->OutstandingFragmentCount.Set (fragmentCount);
firstFragmentWorkItem->ItemException.reset();
while (fragmentCount-- > 0)
{
workItem = &WorkItemQueue[EnqueuePosition++];
if (EnqueuePosition >= QueueSize)
EnqueuePosition = 0;
while (workItem->State != WorkItem::State::Free)
{
WorkItemCompletedEvent.Wait();
}
workItem->Type = type;
workItem->FirstFragment = firstFragmentWorkItem;
workItem->Encryption.Mode = encryptionMode;
workItem->Encryption.Data = fragmentData;
workItem->Encryption.UnitCount = unitsPerFragment;
workItem->Encryption.StartUnitNo = fragmentStartUnitNo;
workItem->Encryption.SectorSize = sectorSize;
fragmentData += unitsPerFragment * sectorSize;
fragmentStartUnitNo += unitsPerFragment;
if (remainder > 0 && --remainder == 0)
--unitsPerFragment;
workItem->State.Set (WorkItem::State::Ready);
WorkItemReadyEvent.Signal();
}
}
firstFragmentWorkItem->ItemCompletedEvent.Wait();
auto_ptr <Exception> itemException;
if (firstFragmentWorkItem->ItemException.get())
itemException = firstFragmentWorkItem->ItemException;
firstFragmentWorkItem->State.Set (WorkItem::State::Free);
WorkItemCompletedEvent.Signal();
if (itemException.get())
itemException->Throw();
}
void EncryptionThreadPool::Start ()
{
if (ThreadPoolRunning)
return;
size_t cpuCount;
#ifdef TC_WINDOWS
SYSTEM_INFO sysInfo;
GetSystemInfo (&sysInfo);
cpuCount = sysInfo.dwNumberOfProcessors;
#elif defined (_SC_NPROCESSORS_ONLN)
cpuCount = (size_t) sysconf (_SC_NPROCESSORS_ONLN);
if (cpuCount == (size_t) -1)
cpuCount = 1;
#elif defined (TC_MACOSX)
int cpuCountSys;
int mib[2] = { CTL_HW, HW_NCPU };
size_t len = sizeof (cpuCountSys);
if (sysctl (mib, 2, &cpuCountSys, &len, nullptr, 0) == -1)
cpuCountSys = 1;
cpuCount = (size_t) cpuCountSys;
#else
# error Cannot determine CPU count
#endif
if (cpuCount < 2)
return;
if (cpuCount > MaxThreadCount)
cpuCount = MaxThreadCount;
StopPending = false;
DequeuePosition = 0;
EnqueuePosition = 0;
for (size_t i = 0; i < sizeof (WorkItemQueue) / sizeof (WorkItemQueue[0]); ++i)
{
WorkItemQueue[i].State.Set (WorkItem::State::Free);
}
try
{
for (ThreadCount = 0; ThreadCount < cpuCount; ++ThreadCount)
{
struct ThreadFunctor : public Functor
{
virtual void operator() ()
{
WorkThreadProc();
}
};
make_shared_auto (Thread, thread);
thread->Start (new ThreadFunctor ());
RunningThreads.push_back (thread);
}
}
catch (...)
{
try
{
ThreadPoolRunning = true;
Stop();
} catch (...) { }
throw;
}
ThreadPoolRunning = true;
}
void EncryptionThreadPool::Stop ()
{
if (!ThreadPoolRunning)
return;
StopPending = true;
WorkItemReadyEvent.Signal();
foreach_ref (const Thread &thread, RunningThreads)
{
thread.Join();
}
ThreadCount = 0;
ThreadPoolRunning = false;
}
void EncryptionThreadPool::WorkThreadProc ()
{
try
{
WorkItem *workItem;
while (!StopPending)
{
{
ScopeLock lock (DequeueMutex);
workItem = &WorkItemQueue[DequeuePosition++];
if (DequeuePosition >= QueueSize)
DequeuePosition = 0;
while (!StopPending && workItem->State != WorkItem::State::Ready)
{
WorkItemReadyEvent.Wait();
}
workItem->State.Set (WorkItem::State::Busy);
}
if (StopPending)
break;
try
{
switch (workItem->Type)
{
case WorkType::DecryptDataUnits:
workItem->Encryption.Mode->DecryptSectorsCurrentThread (workItem->Encryption.Data, workItem->Encryption.StartUnitNo, workItem->Encryption.UnitCount, workItem->Encryption.SectorSize);
break;
case WorkType::EncryptDataUnits:
workItem->Encryption.Mode->EncryptSectorsCurrentThread (workItem->Encryption.Data, workItem->Encryption.StartUnitNo, workItem->Encryption.UnitCount, workItem->Encryption.SectorSize);
break;
default:
throw ParameterIncorrect (SRC_POS);
}
}
catch (Exception &e)
{
workItem->FirstFragment->ItemException.reset (e.CloneNew());
}
catch (exception &e)
{
workItem->FirstFragment->ItemException.reset (new ExternalException (SRC_POS, StringConverter::ToExceptionString (e)));
}
catch (...)
{
workItem->FirstFragment->ItemException.reset (new UnknownException (SRC_POS));
}
if (workItem != workItem->FirstFragment)
{
workItem->State.Set (WorkItem::State::Free);
WorkItemCompletedEvent.Signal();
}
if (workItem->FirstFragment->OutstandingFragmentCount.Decrement() == 0)
workItem->FirstFragment->ItemCompletedEvent.Signal();
}
}
catch (exception &e)
{
SystemLog::WriteException (e);
}
catch (...)
{
SystemLog::WriteException (UnknownException (SRC_POS));
}
}
volatile bool EncryptionThreadPool::ThreadPoolRunning = false;
volatile bool EncryptionThreadPool::StopPending = false;
size_t EncryptionThreadPool::ThreadCount;
EncryptionThreadPool::WorkItem EncryptionThreadPool::WorkItemQueue[QueueSize];
volatile size_t EncryptionThreadPool::EnqueuePosition;
volatile size_t EncryptionThreadPool::DequeuePosition;
Mutex EncryptionThreadPool::EnqueueMutex;
Mutex EncryptionThreadPool::DequeueMutex;
SyncEvent EncryptionThreadPool::WorkItemReadyEvent;
SyncEvent EncryptionThreadPool::WorkItemCompletedEvent;
list < shared_ptr <Thread> > EncryptionThreadPool::RunningThreads;
}
