* | Inspire Internet Relay Chat Daemon |
* +------------------------------------+
*
- * InspIRCd: (C) 2002-2008 InspIRCd Development Team
- * See: http://www.inspircd.org/wiki/index.php/Credits
+ * InspIRCd: (C) 2002-2009 InspIRCd Development Team
+ * See: http://wiki.inspircd.org/Credits
*
* This program is free but copyrighted software; see
* the file COPYING for details.
* ---------------------------------------------------
*/
-#ifndef __THREADENGINE_PTHREAD__
-#define __THREADENGINE_PTHREAD__
+#ifndef __THREADENGINE_WIN32THREAD__
+#define __THREADENGINE_WIN32THREAD__
-#include <pthread.h>
#include "inspircd_config.h"
#include "base.h"
-#include "threadengine.h"
-class InspIRCd;
+class Thread;
-class CoreExport Win32ThreadEngine : public ThreadEngine
+/** 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:
- Win32ThreadEngine(InspIRCd* Instance);
-
- virtual ~Win32ThreadEngine();
-
- bool Mutex(bool enable);
+ ThreadEngine();
- void Run();
+ virtual ~ThreadEngine();
static DWORD WINAPI Entry(void* parameter);
- void Create(Thread* thread_to_init);
-
- void FreeThread(Thread* thread);
+ /** 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 ThreadEngineFactory : public classbase
+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:
- ThreadEngine* Create(InspIRCd* ServerInstance)
+ int connFD;
+ ThreadSignalData()
{
- return new Win32ThreadEngine(ServerInstance);
+ connFD = -1;
}
};