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https://github.com/openwrt/openwrt.git
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2890abbcc0
Use Time::HiRes when available and fallback to raw syscall interface
when not. If that fails too, simply report 0, 0 as real time.
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
(backported from a692e4e3de)
66 lines
1.1 KiB
Perl
Executable File
66 lines
1.1 KiB
Perl
Executable File
#!/usr/bin/env perl
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use strict;
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use warnings;
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use Config;
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if (@ARGV < 2) {
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die "Usage: $0 <prefix> <command...>\n";
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}
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sub gettime {
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my ($sec, $usec);
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eval {
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require Time::HiRes;
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($sec, $usec) = Time::HiRes::gettimeofday();
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};
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unless (defined($sec) && defined($usec)) {
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my $tv_t = ($Config{'longsize'} == 8) ? 'qq' : 'll';
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my $tv = pack $tv_t, 0, 0;
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eval {
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require 'syscall.ph';
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syscall(SYS_gettimeofday(), $tv, 0);
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};
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($sec, $usec) = unpack $tv_t, $tv;
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}
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return ($sec, $usec);
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}
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my ($prefix, @cmd) = @ARGV;
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my ($sec, $usec) = gettime();
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my $pid = fork();
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if (!defined($pid)) {
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die "$0: Failure to fork(): $!\n";
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}
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elsif ($pid == 0) {
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exec(@cmd);
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die "$0: Failure to exec(): $!\n";
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}
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else {
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$SIG{'INT'} = 'IGNORE';
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$SIG{'QUIT'} = 'IGNORE';
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if (waitpid($pid, 0) == -1) {
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die "$0: Failure to waitpid(): $!\n";
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}
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my $exitcode = $? >> 8;
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my ($sec2, $usec2) = gettime();
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my (undef, undef, $cuser, $csystem) = times();
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printf STDERR "%s#%.2f#%.2f#%.2f\n",
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$prefix, $cuser, $csystem,
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($sec2 - $sec) + ($usec2 - $usec) / 1000000;
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$SIG{'INT'} = 'DEFAULT';
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$SIG{'QUIT'} = 'DEFAULT';
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exit $exitcode;
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}
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