Heavily modified for busybox by Erik Andersen <andersen@codepoet.org>
*/
//config:config TIME
-//config: bool "time"
+//config: bool "time (7 kb)"
//config: default y
//config: help
-//config: The time command runs the specified program with the given arguments.
-//config: When the command finishes, time writes a message to standard output
-//config: giving timing statistics about this program run.
+//config: The time command runs the specified program with the given arguments.
+//config: When the command finishes, time writes a message to standard output
+//config: giving timing statistics about this program run.
+
+//applet:IF_TIME(APPLET(time, BB_DIR_USR_BIN, BB_SUID_DROP))
+
+//kbuild:lib-$(CONFIG_TIME) += time.o
//usage:#define time_trivial_usage
-//usage: "[-v] PROG ARGS"
+//usage: "[-vpa] [-o FILE] PROG ARGS"
//usage:#define time_full_usage "\n\n"
//usage: "Run PROG, display resource usage when it exits\n"
//usage: "\n -v Verbose"
+//usage: "\n -p POSIX output format"
+//usage: "\n -f FMT Custom format"
+//usage: "\n -o FILE Write result to FILE"
+//usage: "\n -a Append (else overwrite)"
#include "libbb.h"
#include <sys/resource.h> /* getrusage */
/* summarize: Report on the system use of a command.
- Print the FMT argument except that `%' sequences
- have special meaning, and `\n' and `\t' are translated into
- newline and tab, respectively, and `\\' is translated into `\'.
+ Print the FMT argument except that '%' sequences
+ have special meaning, and '\n' and '\t' are translated into
+ newline and tab, respectively, and '\\' is translated into '\'.
- The character following a `%' can be:
+ The character following a '%' can be:
(* means the tcsh time builtin also recognizes it)
- % == a literal `%'
+ % == a literal '%'
C == command name and arguments
* D == average unshared data size in K (ru_idrss+ru_isrss)
* E == elapsed real (wall clock) time in [hour:]min:sec
}
/* Have signals kill the child but not self (if possible). */
-//TODO: just block all sigs? and reenable them in the very end in main?
+//TODO: just block all sigs? and re-enable them in the very end in main?
interrupt_signal = signal(SIGINT, SIG_IGN);
quit_signal = signal(SIGQUIT, SIG_IGN);
int time_main(int argc UNUSED_PARAM, char **argv)
{
resource_t res;
- const char *output_format = default_format;
+ /* $TIME has lowest prio (-v,-p,-f FMT overrride it) */
+ const char *output_format = getenv("TIME") ? : default_format;
+ char *output_filename;
+ int output_fd;
int opt;
+ int ex;
+ enum {
+ OPT_v = (1 << 0),
+ OPT_p = (1 << 1),
+ OPT_a = (1 << 2),
+ OPT_o = (1 << 3),
+ OPT_f = (1 << 4),
+ };
- opt_complementary = "-1"; /* at least one arg */
/* "+": stop on first non-option */
- opt = getopt32(argv, "+vp");
+ opt = getopt32(argv, "^+" "vpao:f:" "\0" "-1"/*at least one arg*/,
+ &output_filename, &output_format
+ );
argv += optind;
- if (opt & 1)
+ if (opt & OPT_v)
output_format = long_format;
- if (opt & 2)
+ if (opt & OPT_p)
output_format = posix_format;
+ output_fd = STDERR_FILENO;
+ if (opt & OPT_o) {
+ output_fd = xopen(output_filename,
+ (opt & OPT_a) /* append? */
+ ? (O_CREAT | O_WRONLY | O_CLOEXEC | O_APPEND)
+ : (O_CREAT | O_WRONLY | O_CLOEXEC | O_TRUNC)
+ );
+ }
run_command(argv, &res);
/* Cheat. printf's are shorter :) */
- xdup2(STDERR_FILENO, STDOUT_FILENO);
+ xdup2(output_fd, STDOUT_FILENO);
summarize(output_format, argv, &res);
+ ex = WEXITSTATUS(res.waitstatus);
+ /* Impossible: we do not use WUNTRACED flag in wait()...
if (WIFSTOPPED(res.waitstatus))
- return WSTOPSIG(res.waitstatus);
+ ex = WSTOPSIG(res.waitstatus);
+ */
if (WIFSIGNALED(res.waitstatus))
- return WTERMSIG(res.waitstatus);
- if (WIFEXITED(res.waitstatus))
- return WEXITSTATUS(res.waitstatus);
- fflush_stdout_and_exit(EXIT_SUCCESS);
+ ex = WTERMSIG(res.waitstatus);
+
+ fflush_stdout_and_exit(ex);
}