/* * This file is part of John the Ripper password cracker, * Copyright (c) 1996-99 by Solar Designer */#include <unistd.h>#ifdef __linux__#include <sched.h>#ifndef SCHED_IDLE#define SCHED_IDLE			3#endifstatic int use_yield = 0;#endif#ifdef __CYGWIN32__extern int nice(int);#endif#include "params.h"#include "config.h"#include "options.h"void idle_init(void){#ifdef __linux__	struct sched_param param = {0};#endif	if (!cfg_get_bool(SECTION_OPTIONS, NULL, "Idle")) return;	if (options.flags & FLG_STDOUT) return;	nice(20);#ifdef __linux__	use_yield = sched_setscheduler(getpid(), SCHED_IDLE, &param) ? 1 : 2;#endif}void idle_yield(int always){#ifdef __linux__	if (use_yield)	if (use_yield == 1 || always) sched_yield();#endif}