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chrt: code shrink
function old new delta show_min_max 80 60 -20 packed_usage 26929 26896 -33 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 0/2 up/down: 0/-53) Total: -53 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko
parent
cd0f6b0c93
commit
922f6f51db
@ -434,7 +434,7 @@ INSERT
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" [-/ DIR] [-n NICE] [-m BYTES] [-d BYTES] [-o N]\n" \
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" [-p N] [-f BYTES] [-c BYTES] PROG ARGS"
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#define chpst_full_usage "\n\n" \
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"Change the process state and run PROG\n" \
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"Change the process state, run PROG\n" \
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"\nOptions:" \
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"\n -u USER[:GRP] Set uid and gid" \
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"\n -U USER[:GRP] Set $UID and $GID in environment" \
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@ -457,17 +457,17 @@ INSERT
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#define setuidgid_trivial_usage \
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"USER PROG ARGS"
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#define setuidgid_full_usage "\n\n" \
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"Set uid and gid to USER's uid and gid, removing all supplementary\n" \
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"groups and run PROG"
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"Set uid and gid to USER's uid and gid, drop supplementary group ids,\n" \
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"run PROG"
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#define envuidgid_trivial_usage \
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"USER PROG ARGS"
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#define envuidgid_full_usage "\n\n" \
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"Set $UID to USER's uid and $GID to USER's gid and run PROG"
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"Set $UID to USER's uid and $GID to USER's gid, run PROG"
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#define envdir_trivial_usage \
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"DIR PROG ARGS"
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#define envdir_full_usage "\n\n" \
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"Set various environment variables as specified by files\n" \
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"in the directory dir and run PROG"
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"in the directory DIR, run PROG"
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#define softlimit_trivial_usage \
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"[-a BYTES] [-m BYTES] [-d BYTES] [-s BYTES] [-l BYTES]\n" \
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" [-f BYTES] [-c BYTES] [-r BYTES] [-o N] [-p N] [-t N]\n" \
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@ -538,24 +538,49 @@ INSERT
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#define bbconfig_trivial_usage \
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""
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#define bbconfig_full_usage "\n\n" \
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"Print the config file which built busybox"
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"Print the config file used by busybox build"
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#define chrt_trivial_usage \
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"[OPTIONS] [PRIO] [PID | PROG ARGS]"
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#define chrt_full_usage "\n\n" \
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"Manipulate real-time attributes of a process\n" \
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"Change scheduling priority and class for a process\n" \
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"\nOptions:" \
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"\n -p Operate on PID" \
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"\n -r Set SCHED_RR scheduling" \
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"\n -f Set SCHED_FIFO scheduling" \
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"\n -o Set SCHED_OTHER scheduling" \
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"\n -m Show min and max priorities" \
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"\n -r Set SCHED_RR class" \
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"\n -f Set SCHED_FIFO class" \
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"\n -o Set SCHED_OTHER class" \
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"\n -m Show min/max priorities" \
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#define chrt_example_usage \
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"$ chrt -r 4 sleep 900; x=$!\n" \
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"$ chrt -f -p 3 $x\n" \
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"You need CAP_SYS_NICE privileges to set scheduling attributes of a process"
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#define nice_trivial_usage \
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"[-n ADJUST] [PROG ARGS]"
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#define nice_full_usage "\n\n" \
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"Change scheduling priority, run PROG\n" \
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"\nOptions:" \
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"\n -n ADJUST Adjust priority by ADJUST" \
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#define renice_trivial_usage \
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"{{-n INCREMENT} | PRIORITY} [[-p | -g | -u] ID...]"
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#define renice_full_usage "\n\n" \
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"Change scheduling priority for a running process\n" \
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"\nOptions:" \
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"\n -n Adjust current nice value (smaller is faster)" \
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"\n -p Process id(s) (default)" \
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"\n -g Process group id(s)" \
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"\n -u Process user name(s) and/or id(s)" \
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#define ionice_trivial_usage \
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"[-c 1-3] [-n 0-7] [-p PID] [PROG]"
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#define ionice_full_usage "\n\n" \
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"Change I/O priority and class\n" \
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"\nOptions:" \
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"\n -c Class. 1:realtime 2:best-effort 3:idle" \
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"\n -n Priority" \
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#define cp_trivial_usage \
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"[OPTIONS] SOURCE DEST"
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#define cp_full_usage "\n\n" \
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@ -1299,7 +1324,7 @@ INSERT
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#define flock_trivial_usage \
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"[-sxun] FD|{FILE [-c] PROG ARGS}"
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#define flock_full_usage "\n\n" \
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"[Un]lock file descriptor, or lock FILE and run PROG\n" \
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"[Un]lock file descriptor, or lock FILE, run PROG\n" \
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"\nOptions:" \
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"\n -s Shared lock" \
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"\n -x Exclusive lock (default)" \
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@ -2038,14 +2063,6 @@ INSERT
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"\n -Z Set security context" \
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)
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#define ionice_trivial_usage \
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"[-c 1-3] [-n 0-7] [-p PID] [PROG]"
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#define ionice_full_usage "\n\n" \
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"Change I/O scheduling class and priority\n" \
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"\nOptions:" \
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"\n -c Class. 1:realtime 2:best-effort 3:idle" \
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"\n -n Priority" \
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/* would need to make the " | " optional depending on more than one selected: */
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#define ip_trivial_usage \
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"[OPTIONS] {" \
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@ -2965,13 +2982,6 @@ INSERT
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"\n -p Display PID/Program name for sockets" \
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)
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#define nice_trivial_usage \
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"[-n ADJUST] [PROG ARGS]"
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#define nice_full_usage "\n\n" \
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"Run PROG with modified scheduling priority\n" \
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"\nOptions:" \
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"\n -n ADJUST Adjust priority by ADJUST" \
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#define nmeter_trivial_usage \
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"format_string"
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#define nmeter_full_usage "\n\n" \
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@ -3425,16 +3435,6 @@ INSERT
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"\n" \
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"\nOther options are silently ignored" \
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#define renice_trivial_usage \
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"{{-n INCREMENT} | PRIORITY} [[-p | -g | -u] ID...]"
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#define renice_full_usage "\n\n" \
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"Change priority of running processes\n" \
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"\nOptions:" \
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"\n -n Adjust current nice value (smaller is faster)" \
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"\n -p Process id(s) (default)" \
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"\n -g Process group id(s)" \
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"\n -u Process user name(s) and/or id(s)" \
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#define scriptreplay_trivial_usage \
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"timingfile [typescript [divisor]]"
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#define scriptreplay_full_usage "\n\n" \
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@ -5,33 +5,35 @@
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*
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* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
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*/
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#include <sched.h>
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#include "libbb.h"
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#ifndef _POSIX_PRIORITY_SCHEDULING
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#warning your system may be foobared
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#endif
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static const struct {
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int policy;
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char name[12];
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char name[sizeof("SCHED_OTHER")];
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} policies[] = {
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{SCHED_OTHER, "SCHED_OTHER"},
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{SCHED_FIFO, "SCHED_FIFO"},
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{SCHED_RR, "SCHED_RR"}
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};
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//TODO: add
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// -b, SCHED_BATCH
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// -i, SCHED_IDLE
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static void show_min_max(int pol)
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{
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const char *fmt = "%s min/max priority\t: %d/%d\n\0%s not supported?\n";
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const char *fmt = "%s min/max priority\t: %u/%u\n";
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int max, min;
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max = sched_get_priority_max(pol);
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min = sched_get_priority_min(pol);
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if (max >= 0 && min >= 0)
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printf(fmt, policies[pol].name, min, max);
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else {
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fmt += 29;
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printf(fmt, policies[pol].name);
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}
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if ((max|min) < 0)
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fmt = "%s not supported\n";
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printf(fmt, policies[pol].name, min, max);
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}
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#define OPT_m (1<<0)
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