#include <u.h>
#include <libc.h>
#include "mcslock.h"

enum {
	N	= 1 * 1000*1000,
};

extern void ·mcslock(Lock *, Qnode*);
extern void ·mcsunlock(Lock *L, Qnode *l);

Lock sem1;
uchar buffer[128];

enum {
	Cacheline	= 64,
};

int
max(int x, int y)
{
	if(x>y)
		return x;
	return y;
}


void
thread(void)
{
	int i;
	Qnode *q;

	q = mallocz(max(Cacheline, sizeof q), 1);
	for(i = 0; i < N; i++){
		·mcslock(&sem1, q);
		·mcsunlock(&sem1, q);
	}
}

void
main(void)
{
	switch(rfork(RFPROC|RFMEM)){
	case -1:
		sysfatal("fork: %r");
	case 0:
		thread();
		exits("");
	default:
		thread();
		wait();
		exits("");
	}
}