#include <thread>
#include <unistd.h>

extern "C" int __xray_patch();

static volatile bool done;

[[clang::xray_always_instrument,clang::xray_log_args(1)]]
static int
fn(int i)
{
	return i;
}

void
thr()
{
	unsigned i = 0;
	while (!done) {
		fn(++i);
	}
}

int
main(void)
{
	__xray_patch();
	std::thread t[8];
	
	for (int i = 0; i < 8; ++i)
		t[i] = std::thread(thr);
	sleep(7);
	done = true;
	for (int i = 0; i < 8; ++i)
		t[i].join();
}