os_linux.h

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/* (c) 2004 Technische Universitaet Dresden
 * This file is part of DROPS, which is distributed under the terms of the
 * GNU General Public License 2. Please see the COPYING file for details.
 */
#ifndef __JTOP_SERVER_INCLUDE_OS_LINUX_H_
#define __JTOP_SERVER_INCLUDE_OS_LINUX_H_
#include <asm/param.h>
#include <pthread.h>
#include <stdlib.h>

#define OS_PRIO_STRING "Nice"

typedef int thread_t;
/* time is stored in multiples of jiffies */
typedef long long cputime_t;
typedef pthread_mutex_t os_mutex;

extern inline int os_thread_cmp(thread_t t1, thread_t t2);
extern inline int os_thread_near(thread_t t1, thread_t t2);
extern inline void os_mutex_init(os_mutex *mutex);
extern inline void os_mutex_destroy(os_mutex *mutex);
extern inline void os_mutex_lock(os_mutex *mutex);
extern inline void os_mutex_unlock(os_mutex *mutex);
extern inline int os_time2ms(cputime_t time);
extern inline int os_time2us(cputime_t time);

extern inline int os_thread_cmp(thread_t t1, thread_t t2){
    return t1-t2;
}

/* Dummy for Linux, it should be the same thread-group. But we 
 * do not have this information at hand. */
extern inline int os_thread_near(thread_t t1, thread_t t2){
    return abs(t1-t2)<10;
}

extern inline void os_mutex_init(os_mutex *mutex){
    pthread_mutex_init(mutex, 0);
}

extern inline void os_mutex_lock(os_mutex *mutex){
    pthread_mutex_lock(mutex);
}

extern inline void os_mutex_unlock(os_mutex *mutex){
    pthread_mutex_unlock(mutex);
}
extern inline void os_mutex_destroy(os_mutex *mutex){
    pthread_mutex_destroy(mutex);
}

extern inline int os_time2ms(cputime_t time){
    return time*(1000/HZ);
}

extern inline int os_time2us(cputime_t time){
    return time*(1000000/HZ);
}

#endif

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