Remove unneeded Extensible inheritance and remove "age" field from classbase

[user/henk/code/inspircd.git] / include / threadengines / threadengine_win32.h

diff --git a/include/threadengines/threadengine_win32.h b/include/threadengines/threadengine_win32.h
index 9179d1fcf4e614680beb47b348623aadef3fe189..64ad87ab879d43c2c19b2c2c88d26a0b32513d85 100644 (file)
--- a/include/threadengines/threadengine_win32.h
+++ b/include/threadengines/threadengine_win32.h
@@ -2,8 +2,8 @@
  *       | 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.
@@ -16,60 +16,132 @@
 
 #include "inspircd_config.h"
 #include "base.h"
-#include "threadengine.h"
 
 class InspIRCd;
-
-class CoreExport Win32ThreadEngine : public ThreadEngine
+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:
 
-       Win32ThreadEngine(InspIRCd* Instance);
-
-       virtual ~Win32ThreadEngine();
+       ThreadEngine(InspIRCd* Instance);
 
-       bool Mutex(bool enable);
-
-       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 CoreExport ThreadEngineFactory : public classbase
+class CoreExport ThreadData
 {
  public:
-       ThreadEngine* Create(InspIRCd* ServerInstance)
-       {
-               return new Win32ThreadEngine(ServerInstance);
-       }
+       HANDLE handle;
+       void FreeThread(Thread* toFree);
 };
 
-class CoreExport Win32Mutex : public Mutex
+/** 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:
-       Win32Mutex(InspIRCd* Instance);
-       virtual void Enable(bool enable);
-       ~Win32Mutex();
+       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 CoreExport MutexFactory : public Extensible
+class ThreadSignalData
 {
- protected:
-       InspIRCd* ServerInstance;
  public:
-       MutexFactory(InspIRCd* Instance);
-       virtual Mutex* CreateMutex();
+       int connFD;
+       ThreadSignalData()
+       {
+               connFD = -1;
+       }
 };
 
 #endif