unix/SysActivity.hpp

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/******************************************************************************/
/* REXX Kernel                                            SysActivity.hpp     */
/*                                                                            */
/* System support for Thread operations                                       */
/*                                                                            */
/******************************************************************************/
 
#ifndef Included_SysActivity
#define Included_SysActivity
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
 
#if defined( HAVE_PTHREAD_H )
# include <pthread.h>
#endif
 
#if defined( HAVE_MEMORY_H )
# include <memory.h>
#endif
 
#if defined( HAVE_SYS_SCHED_H )
# include <sys/sched.h>
#endif
 
#if defined( HAVE_TIME_H )
# include <time.h>
#endif
 
#if defined( HAVE_SCHED_H )
# include <sched.h>
#endif
 
class RexxActivity;
 
class SysActivity
{
public:
    inline SysActivity() : threadId(0) { }
    inline bool equals(thread_id_t t) { return threadId == t; }
    void create(RexxActivity *activity, size_t stackSize);
    void close();
    void useCurrentThread();
    char *getStackBase(size_t stackSize);
    void setPriority(int p);
    bool validateThread();
    inline thread_id_t getThreadID() { return (thread_id_t)threadId; }
 
    static thread_id_t queryThreadID();
    // the following os a NOP on unix platforms
    static void yield();
    static wholenumber_t yieldCounter();
 
protected:
    pthread_t     threadId;         // the thread identifier
};
 
#endif