101 lines
2.1 KiB
C++
101 lines
2.1 KiB
C++
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// IsThread.h
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// Interfaces to the cIsThread class representing an OS-independent wrapper for a class that implements a thread.
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// This class will eventually suupersede the old cThread class
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/*
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Usage:
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To have a new thread, declare a class descending from cIsClass.
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Then override its Execute() method to provide your thread processing.
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In the descending class' constructor call the Start() method to start the thread once you're finished with initialization.
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*/
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#pragma once
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#ifndef CISTHREAD_H_INCLUDED
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#define CISTHREAD_H_INCLUDED
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class cIsThread
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{
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protected:
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/// This is the main thread entrypoint
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virtual void Execute(void) = 0;
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/// The overriden Execute() method should check this value periodically and terminate if this is true
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volatile bool m_ShouldTerminate;
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public:
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cIsThread(const AString & iThreadName);
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~cIsThread();
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/// Starts the thread; returns without waiting for the actual start
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bool Start(void);
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/// Signals the thread to terminate and waits until it's finished
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void Stop(void);
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/// Waits for the thread to finish. Doesn't signalize the ShouldTerminate flag
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bool Wait(void);
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/// Returns the OS-dependent thread ID for the caller's thread
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static unsigned long GetCurrentID(void);
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protected:
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AString m_ThreadName;
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// Value used for "no handle":
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#ifdef _WIN32
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#define NULL_HANDLE NULL
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#else
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#define NULL_HANDLE 0
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#endif
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#ifdef _WIN32
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HANDLE m_Handle;
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static DWORD_PTR __stdcall thrExecute(LPVOID a_Param)
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{
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// Create a window so that the thread can be identified by 3rd party tools:
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HWND IdentificationWnd = CreateWindow("STATIC", ((cIsThread *)a_Param)->m_ThreadName.c_str(), 0, 0, 0, 0, WS_OVERLAPPED, NULL, NULL, NULL, NULL);
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// Run the thread:
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((cIsThread *)a_Param)->Execute();
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// Destroy the identification window:
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DestroyWindow(IdentificationWnd);
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return 0;
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}
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#else // _WIN32
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pthread_t m_Handle;
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static void * thrExecute(void * a_Param)
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{
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((cIsThread *)a_Param)->Execute();
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return NULL;
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}
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#endif // else _WIN32
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} ;
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#endif // CISTHREAD_H_INCLUDED
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