Re: [9fans] Privalloc(2) and rfork(RFPROC|RFMEM) (was: a pair nec bugs)

[erik quanstrom <quanstro@quanstro.net>]

by the way, the following program runs without asserting for me
with or without the waits.

- erik

---

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

void
task(void **p)
{
	assert(*p == nil);
	*p = (void*)(uintptr)getpid();
}

void
spawn(void (*t)(void**), void **p)
{
	int pid;

	switch(pid = rfork(RFMEM|RFPROC)){
	case -1:
		sysfatal("spawn: rfork: %r");
	case 0:
		t(p);
		exits("");
	default:
		USED(pid);
		return;
	}
}

void
main(void)
{
	int i, k;
	void **p;
	Waitmsg *w;

	p = privalloc();
	k = 0;
	for(i = 0; i < 1024; i++){
		spawn(task, p);
		for(k++; k > 16; k--){
			if((w = wait()) == nil)
				break;
			free(w);
		}
	}
	exits("");
}