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progress: Show current progress on SIGINFO

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Currently we only print progress information on retrieval of SIGUSR1.
Some systems have a dedicated SIGINFO for this, however, so it should be
handled appropriately if it is available.

Buglink: https://bugs.launchpad.net/qemu/+bug/1662468
Signed-off-by: Max Reitz <mreitz@redhat.com>
Message-id: 20170207235757.2026-1-mreitz@redhat.com
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
This commit is contained in:
Max Reitz 2017-02-08 00:57:57 +01:00
parent cc02e89eb4
commit 262fbae692
2 changed files with 5 additions and 1 deletions
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3
qemu-img.texi
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@ -84,7 +84,8 @@ with or without a command shows help and lists the supported formats
@item -p
display progress bar (compare, convert and rebase commands only).
If the @var{-p} option is not used for a command that supports it, the
progress is reported when the process receives a @code{SIGUSR1} signal.
progress is reported when the process receives a @code{SIGUSR1} or
@code{SIGINFO} signal.
@item -q
Quiet mode - do not print any output (except errors). There's no progress bar
in case both @var{-q} and @var{-p} options are used.

3
util/qemu-progress.c
View File

@ -88,6 +88,9 @@ static void progress_dummy_init(void)
action.sa_handler = sigusr_print;
action.sa_flags = 0;
sigaction(SIGUSR1, &action, NULL);
#ifdef SIGINFO
sigaction(SIGINFO, &action, NULL);
#endif
/*
* SIGUSR1 is SIG_IPI and gets blocked in qemu_init_main_loop(). In the