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/*-----------------------------------------------------------------
LOG
GEM - Graphics Environment for Multimedia
Thread.h
- part of GEM
- simple platform independent thread abstraction
Copyright (c) 2011-2012 IOhannes m zmölnig. forum::für::umläute. IEM. zmoelnig@iem.at
For information on usage and redistribution, and for a DISCLAIMER OF ALL
WARRANTIES, see the file, "GEM.LICENSE.TERMS" in this distribution.
-----------------------------------------------------------------*/
#ifndef _INCLUDE__GEM_GEM_THREAD_H_
#define _INCLUDE__GEM_GEM_THREAD_H_
#include "Gem/ExportDef.h"
namespace gem { namespace thread {
/**
* get the number of available CPUs on the system
*/
GEM_EXTERN unsigned int getCPUCount(void);
class GEM_EXTERN Thread {
private:
class PIMPL;
PIMPL*m_pimpl;
friend class PIMPL;
Thread(const Thread&);
Thread&operator=(const Thread&);
public:
Thread(void);
virtual ~Thread(void);
////
// start thread
virtual bool start(void);
////
// stop thread
// waits for at most wait4usec microseconds
// is wait4usec==0, waits until process terminates (e.g. forever)
virtual bool stop(unsigned int wait4usec=0);
protected:
////
// the worker!
// get's called from an alternative thread
// if TRUE is returned, process() will be called again
// until stop() is called
// if FALSE is returned, the thread may exit
virtual bool process(void) = 0;
};
////////
// wrapper around select() or whatever
GEM_EXTERN void usleep(unsigned long usec);
};}; // namespace
#endif /* _INCLUDE__GEM_GEM_THREAD_H_ */
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