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authorRob Landley <rob@landley.net>2014-09-17 20:21:44 -0500
committerRob Landley <rob@landley.net>2014-09-17 20:21:44 -0500
commit40b20421e42cce9834d13ab52ac58efd78838ede (patch)
treeab50bb1f9e9afd5c43d6cd56e7a175e3f95d73c6 /toys/other
parentc022d276d14996fc4d3bea3c0e1792a05eb816cc (diff)
downloadtoybox-40b20421e42cce9834d13ab52ac58efd78838ede.tar.gz
Cleanup pass on README.
Other versions are adding Cached from /proc/meminfo to free buffers/cache (and subtracting it from used), but sysinfo() doesn't provide it. (But it provide "high memory", which hasn't been relevant for almost a decade...) But that's a design change, not a cleanup issue.
Diffstat (limited to 'toys/other')
-rw-r--r--toys/other/free.c60
1 files changed, 25 insertions, 35 deletions
diff --git a/toys/other/free.c b/toys/other/free.c
index 3281d79b..cf4abc52 100644
--- a/toys/other/free.c
+++ b/toys/other/free.c
@@ -2,56 +2,46 @@
*
* Copyright 2012 Elie De Brauwer <eliedebrauwer@gmail.com>
-USE_FREE(NEWTOY(free, "gmkb", TOYFLAG_USR|TOYFLAG_BIN))
+USE_FREE(NEWTOY(free, "tgmkb[!tgmkb]", TOYFLAG_USR|TOYFLAG_BIN))
config FREE
bool "free"
default y
help
- usage: free [-bkmg]
+ usage: free [-bkmgt]
- Display the total, free and used amount of physical memory and
- swap space.
+ Display the total, free and used amount of physical memory and swap space.
- -bkmg Output in bytes (default), KB, MB or GB
+ -bkmgt Output units (default is bytes)
*/
#define FOR_free
#include "toys.h"
-static unsigned long long convert(unsigned long d, unsigned int iscale,
- unsigned int oscale)
+GLOBALS(
+ unsigned bits;
+ unsigned long long units;
+)
+
+static unsigned long long convert(unsigned long d)
{
- return ((unsigned long long)d*iscale)>>oscale;
+ return (d*TT.units)>>TT.bits;
}
void free_main(void)
{
- struct sysinfo info;
- unsigned int iscale = 1;
- unsigned int oscale = 0;
-
- sysinfo(&info);
- if (info.mem_unit) iscale = info.mem_unit;
- if (toys.optflags & FLAG_b) oscale = 0;
- if (toys.optflags & FLAG_k) oscale = 10;
- if (toys.optflags & FLAG_m) oscale = 20;
- if (toys.optflags & FLAG_g) oscale = 30;
-
- xprintf("\t\ttotal used free shared buffers\n");
- xprintf("Mem:%17llu%12llu%12llu%12llu%12llu\n",
- convert(info.totalram, iscale, oscale),
- convert(info.totalram-info.freeram, iscale, oscale),
- convert(info.freeram, iscale, oscale),
- convert(info.sharedram, iscale, oscale),
- convert(info.bufferram, iscale, oscale));
-
- xprintf("-/+ buffers/cache:%15llu%12llu\n",
- convert(info.totalram - info.freeram - info.bufferram, iscale, oscale),
- convert(info.freeram + info.bufferram, iscale, oscale));
-
- xprintf("Swap:%16llu%12llu%12llu\n",
- convert(info.totalswap, iscale, oscale),
- convert(info.totalswap - info.freeswap, iscale, oscale),
- convert(info.freeswap, iscale, oscale));
+ 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));
}