/*-
 * Top - a top users display for Berkeley Unix
 *
 * $FreeBSD$
 */

#ifndef TOP_H
#define TOP_H

#include <unistd.h>

/* Number of lines of header information on the standard screen */
extern int Header_lines;

/* Special atoi routine returns either a non-negative number or one of: */
#define Infinity	-1
#define Invalid		-2

/* maximum number we can have */
#define Largest		0x7fffffff

/* Exit code for system errors */
#define TOP_EX_SYS_ERROR	23

enum displaymodes { DISP_CPU = 0, DISP_IO, DISP_MAX };

/*
 * Format modifiers
 */
#define FMT_SHOWARGS 0x00000001

extern enum displaymodes displaymode;

extern int pcpu_stats;
extern int overstrike;
extern pid_t mypid;

extern int (*compares[])(const void*, const void*);

const char* kill_procs(char *);
const char* renice_procs(char *);

extern char copyright[];

void quit(int);

/*
 *  The space command forces an immediate update.  Sometimes, on loaded
 *  systems, this update will take a significant period of time (because all
 *  the output is buffered).  So, if the short-term load average is above
 *  "LoadMax", then top will put the cursor home immediately after the space
 *  is pressed before the next update is attempted.  This serves as a visual
 *  acknowledgement of the command.
 */
#define LoadMax  5.0

/*
 *  "Nominal_TOPN" is used as the default TOPN when
 *  the output is a dumb terminal.  If we didn't do this, then
 *  we will get every
 *  process in the system when running top on a dumb terminal (or redirected
 *  to a file).  Note that Nominal_TOPN is a default:  it can still be
 *  overridden on the command line, even with the value "infinity".
 */
#define Nominal_TOPN	18

#endif /* TOP_H */