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|
/* +------------------------------------+
* | Inspire Internet Relay Chat Daemon |
* +------------------------------------+
*
* InspIRCd: (C) 2002-2010 InspIRCd Development Team
* See: http://wiki.inspircd.org/Credits
*
* This program is free but copyrighted software; see
* the file COPYING for details.
*
* ---------------------------------------------------
*/
#ifndef __THREADENGINE_WIN32THREAD__
#define __THREADENGINE_WIN32THREAD__
#include "inspircd_config.h"
#include "base.h"
class Thread;
/** The ThreadEngine class has the responsibility of initialising
* Thread derived classes. It does this by creating operating system
* level threads which are then associated with the class transparently.
* This allows Thread classes to be derived without needing to know how
* the OS implements threads. You should ensure that any sections of code
* that use threads are threadsafe and do not interact with any other
* parts of the code which are NOT known threadsafe! If you really MUST
* access non-threadsafe code from a Thread, use the Mutex class to wrap
* access to the code carefully.
*/
class CoreExport ThreadEngine
{
public:
ThreadEngine();
virtual ~ThreadEngine();
static DWORD WINAPI Entry(void* parameter);
/** Create a new thread. This takes an already allocated
* Thread* pointer and initializes it to use this threading
* engine. On failure, this function may throw a CoreException.
* @param thread_to_init Pointer to a newly allocated Thread
* derived object.
*/
void Start(Thread* thread_to_init);
/** Returns the thread engine's name for display purposes
* @return The thread engine name
*/
const std::string GetName()
{
return "windows-thread";
}
};
class CoreExport ThreadData
{
public:
HANDLE handle;
void FreeThread(Thread* toFree);
};
/** The Mutex class represents a mutex, which can be used to keep threads
* properly synchronised. Use mutexes sparingly, as they are a good source
* of thread deadlocks etc, and should be avoided except where absolutely
* neccessary. Note that the internal behaviour of the mutex varies from OS
* to OS depending on the thread engine, for example in windows a Mutex
* in InspIRCd uses critical sections, as they are faster and simpler to
* manage.
*/
class CoreExport Mutex
{
private:
CRITICAL_SECTION wutex;
public:
Mutex()
{
InitializeCriticalSection(&wutex);
}
void Lock()
{
EnterCriticalSection(&wutex);
}
void Unlock()
{
LeaveCriticalSection(&wutex);
}
~Mutex()
{
DeleteCriticalSection(&wutex);
}
};
class ThreadQueueData
{
CRITICAL_SECTION mutex;
HANDLE event;
public:
ThreadQueueData()
{
InitializeCriticalSection(&mutex);
event = CreateEvent(NULL, false, false, NULL);
}
~ThreadQueueData()
{
DeleteCriticalSection(&mutex);
}
void Lock()
{
EnterCriticalSection(&mutex);
}
void Unlock()
{
LeaveCriticalSection(&mutex);
}
void Wakeup()
{
PulseEvent(event);
}
void Wait()
{
LeaveCriticalSection(&mutex);
WaitForSingleObject(event, INFINITE);
EnterCriticalSection(&mutex);
}
};
class ThreadSignalData
{
public:
int connFD;
ThreadSignalData()
{
connFD = -1;
}
};
#endif
|
