1 /* free.c - Display amount of free and used memory in the system. 2 * 3 * Copyright 2012 Elie De Brauwer <eliedebrauwer (at) gmail.com> 4 5 USE_FREE(NEWTOY(free, "tgmkb[!tgmkb]", TOYFLAG_USR|TOYFLAG_BIN)) 6 7 config FREE 8 bool "free" 9 default y 10 help 11 usage: free [-bkmgt] 12 13 Display the total, free and used amount of physical memory and swap space. 14 15 -bkmgt Output units (default is bytes) 16 */ 17 18 #define FOR_free 19 #include "toys.h" 20 21 GLOBALS( 22 unsigned bits; 23 unsigned long long units; 24 ) 25 26 static unsigned long long convert(unsigned long d) 27 { 28 return (d*TT.units)>>TT.bits; 29 } 30 31 void free_main(void) 32 { 33 struct sysinfo in; 34 35 sysinfo(&in); 36 TT.units = in.mem_unit ? in.mem_unit : 1; 37 for (TT.bits = 0; toys.optflags && !(toys.optflags&(1<<TT.bits)); TT.bits++); 38 TT.bits *= 10; 39 40 xprintf("\t\ttotal used free shared buffers\n" 41 "Mem:%17llu%12llu%12llu%12llu%12llu\n-/+ buffers/cache:%15llu%12llu\n" 42 "Swap:%16llu%12llu%12llu\n", convert(in.totalram), 43 convert(in.totalram-in.freeram), convert(in.freeram), convert(in.sharedram), 44 convert(in.bufferram), convert(in.totalram - in.freeram - in.bufferram), 45 convert(in.freeram + in.bufferram), convert(in.totalswap), 46 convert(in.totalswap - in.freeswap), convert(in.freeswap)); 47 } 48
