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#ifndef DDK_THREAD
#define DDK_THREAD 1
#include <ntddk.h>
#include <EASTL/deque.h>
#include <EASTL/functional.h>
#include <EASTL/shared_ptr.h>
extern "C" void InterceptorThreadRoutine(PVOID threadContext);
namespace DriverThread
{
class Mutex
{
public:
Mutex(void);
~Mutex(void);
private:
void Lock();
void Unlock();
volatile long int m_interlock;
friend class LockGuard;
};
class LockGuard
{
public:
LockGuard(Mutex & m);
~LockGuard(void);
private:
Mutex m_Lock;
};
class ThreadArgs : public virtual eastl::enable_shared_from_this<ThreadArgs>
{
public:
ThreadArgs(void)
{
}
ThreadArgs(const ThreadArgs &) = delete;
virtual ~ThreadArgs(void)
{
}
};
using ThreadRoutine = eastl::function<NTSTATUS(eastl::shared_ptr<ThreadArgs> args)>;
class Thread
{
public:
Thread(void);
Thread(const Thread &) = delete;
~Thread(void);
NTSTATUS Start(ThreadRoutine routine, eastl::shared_ptr<ThreadArgs> args);
NTSTATUS WaitForTermination(LONGLONG timeout = 0);
HANDLE GetThreadId(void)
{
return m_threadId;
}
bool isRunning(void)
{
return GetThreadId() != nullptr;
}
private:
friend void ::InterceptorThreadRoutine(PVOID threadContext);
HANDLE m_threadId = nullptr;
PETHREAD m_threadObject = nullptr;
Mutex m_mutex;
ThreadRoutine m_routine;
eastl::shared_ptr<ThreadArgs> m_threadContext;
};
class Spinlock
{
public:
Spinlock(void);
NTSTATUS Acquire(void);
void Release(void);
KIRQL GetOldIrql(void);
private:
KIRQL m_oldIrql;
KSPIN_LOCK m_spinLock;
};
class Semaphore
{
public:
Semaphore(LONG initialValue = 0, LONG maxValue = MAXLONG);
NTSTATUS Wait(LONGLONG timeout = 0);
LONG Release(LONG adjustment = 1);
private:
KSEMAPHORE m_semaphore;
};
class Event
{
public:
Event();
NTSTATUS Wait(LONGLONG timeout = 0);
NTSTATUS Notify();
private:
KEVENT m_event;
};
class WorkItem final
{
friend class WorkQueue;
public:
WorkItem(const eastl::shared_ptr<void> & user) : m_user(std::move(user))
{
}
virtual ~WorkItem(void)
{
}
template <class T>
eastl::shared_ptr<T> Get(void)
{
return eastl::static_pointer_cast<T>(m_user);
}
template <class T>
void Get(eastl::shared_ptr<T> & dest)
{
dest = eastl::static_pointer_cast<T>(m_user);
}
private:
eastl::shared_ptr<void> m_user;
};
using WorkerRoutine = eastl::function<NTSTATUS(WorkItem & item)>;
class WorkQueue final
{
public:
WorkQueue(void);
WorkQueue(const WorkQueue &) = delete;
~WorkQueue(void);
NTSTATUS Start(WorkerRoutine routine);
void Stop(bool wait = true);
void Enqueue(WorkItem & item);
void Enqueue(eastl::deque<WorkItem> & items);
private:
Mutex m_mutex;
eastl::deque<WorkItem> m_queue;
Event m_wakeEvent;
bool m_stopWorker; // Work LIST must be empty and StopWorker TRUE to be able to stop!
Thread m_worker;
WorkerRoutine m_workerRoutine;
static NTSTATUS WorkerInterceptorRoutine(eastl::shared_ptr<ThreadArgs> args);
};
}; // namespace DriverThread
#endif
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