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/* free.c - Display amount of free and used memory in the system.
*
* Copyright 2012 Elie De Brauwer <eliedebrauwer@gmail.com>
USE_FREE(NEWTOY(free, "tgmkb[!tgmkb]", TOYFLAG_USR|TOYFLAG_BIN))
config FREE
bool "free"
default y
help
usage: free [-bkmgt]
Display the total, free and used amount of physical memory and swap space.
-bkmgt Output units (default is bytes)
*/
#define FOR_free
#include "toys.h"
GLOBALS(
unsigned bits;
unsigned long long units;
)
static unsigned long long convert(unsigned long d)
{
return (d*TT.units)>>TT.bits;
}
void free_main(void)
{
struct sysinfo in;
sysinfo(&in);
TT.units = in.mem_unit ? in.mem_unit : 1;
for (TT.bits = 0; toys.optflags && !(toys.optflags&(1<<TT.bits)); TT.bits++);
TT.bits *= 10;
xprintf("\t\ttotal used free shared buffers\n"
"Mem:%17llu%12llu%12llu%12llu%12llu\n-/+ buffers/cache:%15llu%12llu\n"
"Swap:%16llu%12llu%12llu\n", convert(in.totalram),
convert(in.totalram-in.freeram), convert(in.freeram), convert(in.sharedram),
convert(in.bufferram), convert(in.totalram - in.freeram - in.bufferram),
convert(in.freeram + in.bufferram), convert(in.totalswap),
convert(in.totalswap - in.freeswap), convert(in.freeswap));
}
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