#include <stdint.h>
#include <stdio.h>
#include <stdarg.h>
#include <unistd.h>

/* TODO: not thread-safe nor fork-safe */
static volatile int t_status;

#define T_LOC2(l) __FILE__ ":" #l
#define T_LOC1(l) T_LOC2(l)
#define t_error(...) t_printf("ERROR " T_LOC1(__LINE__) ": " __VA_ARGS__)

static int t_printf(const char *s, ...)
{
	va_list ap;
	char buf[512];
	int n;

	t_status = 1;
	va_start(ap, s);
	n = vsnprintf(buf, sizeof buf, s, ap);
	va_end(ap);
	if (n < 0)
		n = 0;
	else if (n >= sizeof buf) {
		n = sizeof buf;
		buf[n - 1] = '\n';
		buf[n - 2] = '.';
		buf[n - 3] = '.';
		buf[n - 4] = '.';
	}
	return write(1, buf, n);
}

int t_vmfill(void **, size_t *, int);

void t_fdfill(void);

void t_randseed(uint64_t s);
uint64_t t_randn(uint64_t n);
uint64_t t_randint(uint64_t a, uint64_t b);
void t_shuffle(uint64_t *p, size_t n);
void t_randrange(uint64_t *p, size_t n);
int t_choose(uint64_t n, size_t k, uint64_t *p);

char *t_pathrel(char *buf, size_t n, char *argv0, char *p);