summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorDenys Vlasenko <vda.linux@googlemail.com>2010-02-21 04:39:59 (GMT)
committer Denys Vlasenko <vda.linux@googlemail.com>2010-02-21 04:39:59 (GMT)
commitbef5711dab5b78dcaafb33a7f0071dfd90188fe1 (patch)
treed1f741bcd7209db3bbe8e1ffe28aa9accb31f33b
parent153fcaa6c17124ebbf0d50df5da95f3564c7402b (diff)
downloadbusybox-bef5711dab5b78dcaafb33a7f0071dfd90188fe1.tar.gz
busybox-bef5711dab5b78dcaafb33a7f0071dfd90188fe1.tar.bz2
free: code shrink
function old new delta free_main 330 302 -28 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
-rw-r--r--procps/free.c83
1 files changed, 48 insertions, 35 deletions
diff --git a/procps/free.c b/procps/free.c
index e8bea50..a941b62 100644
--- a/procps/free.c
+++ b/procps/free.c
@@ -15,54 +15,67 @@ int free_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int free_main(int argc UNUSED_PARAM, char **argv)
{
struct sysinfo info;
+ unsigned mem_unit;
+
+#if ENABLE_DESKTOP
+ if (argv[1] && argv[1][0] == '-')
+ bb_show_usage();
+#endif
+
sysinfo(&info);
/* Kernels prior to 2.4.x will return info.mem_unit==0, so cope... */
- if (info.mem_unit == 0) {
- info.mem_unit=1;
+ mem_unit = 1;
+ if (info.mem_unit != 0) {
+ mem_unit = info.mem_unit;
}
- if (info.mem_unit == 1) {
- info.mem_unit=1024;
- /* TODO: Make all this stuff not overflow when mem >= 4 Gib */
- info.totalram/=info.mem_unit;
- info.freeram/=info.mem_unit;
+ /* Convert values to kbytes */
+ if (mem_unit == 1) {
+ info.totalram >>= 10;
+ info.freeram >>= 10;
#if BB_MMU
- info.totalswap/=info.mem_unit;
- info.freeswap/=info.mem_unit;
+ info.totalswap >>= 10;
+ info.freeswap >>= 10;
#endif
- info.sharedram/=info.mem_unit;
- info.bufferram/=info.mem_unit;
+ info.sharedram >>= 10;
+ info.bufferram >>= 10;
} else {
- info.mem_unit/=1024;
- /* TODO: Make all this stuff not overflow when mem >= 4 Gib */
- info.totalram*=info.mem_unit;
- info.freeram*=info.mem_unit;
+ mem_unit >>= 10;
+ /* TODO: Make all this stuff not overflow when mem >= 4 Tb */
+ info.totalram *= mem_unit;
+ info.freeram *= mem_unit;
#if BB_MMU
- info.totalswap*=info.mem_unit;
- info.freeswap*=info.mem_unit;
+ info.totalswap *= mem_unit;
+ info.freeswap *= mem_unit;
#endif
- info.sharedram*=info.mem_unit;
- info.bufferram*=info.mem_unit;
+ info.sharedram *= mem_unit;
+ info.bufferram *= mem_unit;
}
- if (argv[1] && argv[1][0] == '-')
- bb_show_usage();
-
- printf("%6s%13s%13s%13s%13s%13s\n", "", "total", "used", "free",
- "shared", "buffers");
-
- printf("%6s%13ld%13ld%13ld%13ld%13ld\n", "Mem:", info.totalram,
- info.totalram-info.freeram, info.freeram,
- info.sharedram, info.bufferram);
-
+ printf(" %13s%13s%13s%13s%13s\n",
+ "total",
+ "used",
+ "free",
+ "shared", "buffers" /* swap and total don't have these columns */
+ );
+ printf("%6s%13lu%13lu%13lu%13lu%13lu\n", "Mem:",
+ info.totalram,
+ info.totalram - info.freeram,
+ info.freeram,
+ info.sharedram, info.bufferram
+ );
#if BB_MMU
- printf("%6s%13ld%13ld%13ld\n", "Swap:", info.totalswap,
- info.totalswap-info.freeswap, info.freeswap);
-
- printf("%6s%13ld%13ld%13ld\n", "Total:", info.totalram+info.totalswap,
- (info.totalram-info.freeram)+(info.totalswap-info.freeswap),
- info.freeram+info.freeswap);
+ printf("%6s%13lu%13lu%13lu\n", "Swap:",
+ info.totalswap,
+ info.totalswap - info.freeswap,
+ info.freeswap
+ );
+ printf("%6s%13lu%13lu%13lu\n", "Total:",
+ info.totalram + info.totalswap,
+ (info.totalram - info.freeram) + (info.totalswap - info.freeswap),
+ info.freeram + info.freeswap
+ );
#endif
return EXIT_SUCCESS;
}