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In the --fast-read mode send SIGTERM to decompressor once we have extracted

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all files we have been asked for. This vastly improves performance of
pkg_add(1), because usually it only extract +CONTENTS file in --fast-read
mode, checks it and only then extracts full content of tarball in normal
mode. Without this patch, it have had to decompress the tarball twice,
effectively doubling consumed CPU time.

MFC after:	1 week
This commit is contained in:
Maxim Sobolev 2002-09-09 06:00:16 +00:00
parent 86eedb4ef4
commit 301ca7cf84
1 changed files with 10 additions and 6 deletions
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4
contrib/tar/src/buffer.c
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@ -1332,6 +1332,9 @@ close_archive (void)
might become clever enough to just stop working, once there is no more
work to do, we might have to revise this area in such time. */
if (fast_read_option && namelist_freed)
kill(child_pid, SIGTERM);
if (access_mode == ACCESS_READ
&& ! _isrmt (archive)
&& (S_ISFIFO (archive_stat.st_mode) || S_ISSOCK (archive_stat.st_mode)))
@ -1358,6 +1361,7 @@ close_archive (void)
break;
}
if (!fast_read_option || !namelist_freed)
if (WIFSIGNALED (wait_status))
ERROR ((0, 0, _("Child died with signal %d"),
WTERMSIG (wait_status)));