#define _GNU_SOURCE
#include <unistd.h>
#include <sys/types.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include "utils.h"

/*
 * Output an error fprintf style to stderr and abort.
 */
void
utils_fatal_error(const char *fmt, ...)
{
    va_list ap;

    va_start(ap, fmt);
    vfprintf(stderr, fmt, ap);
    va_end(ap);
    abort();
}

/* 
 * This method can only be used to assert that a thread is holding
 * a lock.  It will flag a warning in Helgrind that is reasonable
 * to suppress. 
 */
bool 
utils_is_lock_held(pthread_mutex_t *lock)
{
    return lock->__data.__owner == gettid();
}