f1f532084a
This patch does probably too much, but it's hard (and very cumbersome/time consuming) to break it out. What is does is this: * each command has one short description, e.g. "list MUX configuration" * made sure the short descriptions start lowercase * each command has one usage. That string contains just the options, e.g. "[-npn]". It's not part of the long help text. * that is, it doesn't say "[OPTIONS]" anymore, every usable option is listed by character in this (short) option string (the long description is in the long help text, as before) * help texts have been reworked, to make them - sometimes smaller - sometimes describe the options better - more often present themselves in a nicer format * all long help texts are now created with BUSYBOX_CMD_HELP_ macros, no more 'static const __maybe_unused char cmd_foobar_help[]' * made sure the long help texts starts uppercase * because cmdtp->name and cmdtp->opts together provide the new usage, all "Usage: foobar" texts have been removed from the long help texts * BUSYBOX_CMD_HELP_TEXT() provides the trailing newline by itself, this is nicer in the source code * BUSYBOX_CMD_HELP_OPT() provides the trailing newline by itself * made sure no line gets longer than 77 characters * delibertely renamed cmdtp->usage, so that we can get compile-time errors (e.g. in out-of-tree modules that use register_command() * the 'help' command can now always emit the usage, even without compiled long help texts * 'help -v' gives a list of commands with their short description, this is similar like the old "help" command before my patchset * 'help -a' gives out help of all commands Signed-off-by: Holger Schurig <holgerschurig@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
59 lines
1.1 KiB
C
59 lines
1.1 KiB
C
#include <common.h>
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#include <command.h>
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#include <clock.h>
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#include <asm-generic/div64.h>
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#include <malloc.h>
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static int do_time(int argc, char *argv[])
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{
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int i;
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unsigned char *buf;
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u64 start, end, diff64;
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unsigned long diff;
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int len = 1; /* '\0' */
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if (argc < 2)
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return COMMAND_ERROR_USAGE;
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for (i = 1; i < argc; i++)
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len += strlen(argv[i]) + 1;
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buf = xzalloc(len);
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for (i = 1; i < argc; i++) {
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strcat(buf, argv[i]);
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strcat(buf, " ");
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}
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start = get_time_ns();
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run_command(buf);
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end = get_time_ns();
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diff64 = end - start;
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do_div(diff64, 1000000);
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diff = diff64;
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printf("time: %lums\n", diff);
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free(buf);
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return 0;
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}
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BAREBOX_CMD_HELP_START(time)
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BAREBOX_CMD_HELP_TEXT("Note: This command depends on COMMAND being interruptible,")
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BAREBOX_CMD_HELP_TEXT("otherwise the timer may overrun resulting in incorrect results")
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BAREBOX_CMD_HELP_END
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BAREBOX_CMD_START(time)
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.cmd = do_time,
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BAREBOX_CMD_DESC("measure execution duration of a command")
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BAREBOX_CMD_OPTS("COMMAND")
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BAREBOX_CMD_GROUP(CMD_GRP_MISC)
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BAREBOX_CMD_HELP(cmd_time_help)
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BAREBOX_CMD_END
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