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From 714dfa20586988e535dc7290be0d5d8d6b0853f3 Mon Sep 17 00:00:00 2001
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From: Kevin Wolf <kwolf@redhat.com>
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Date: Wed, 15 Jan 2014 15:39:10 +0100
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Subject: [PATCH 33/37] qemu-io: New command 'sleep'
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Message-id: <1392117622-28812-34-git-send-email-kwolf@redhat.com>
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Patchwork-id: 57198
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O-Subject: [RHEL-7.0 qemu-kvm PATCH v2 33/37] qemu-io: New command 'sleep'
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Bugzilla: 748906
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RH-Acked-by: Laszlo Ersek <lersek@redhat.com>
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RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
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RH-Acked-by: Max Reitz <mreitz@redhat.com>
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There is no easy way to check that a request correctly waits for a
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different request. With a sleep command we can at least approximate it.
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Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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(cherry picked from commit cd33d02a1012e58ee0d3c8259159e8c60cfa0a4d)
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Conflicts:
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qemu-io-cmds.c
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Conflicts because RHEL 7 doesn't have...
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- ...the qemu-io refactoring for supporting qemu-io from the monitor
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- ...the new timer API
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Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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---
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qemu-io.c | 42 ++++++++++++++++++++++++++++++++++++++++++
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1 file changed, 42 insertions(+)
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---
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qemu-io.c | 42 ++++++++++++++++++++++++++++++++++++++++++
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1 files changed, 42 insertions(+), 0 deletions(-)
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diff --git a/qemu-io.c b/qemu-io.c
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index 7e258a5..0959178 100644
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--- a/qemu-io.c
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+++ b/qemu-io.c
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@@ -22,6 +22,7 @@
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#include "block/qapi.h"
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#include "cmd.h"
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#include "trace/control.h"
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+#include "qemu/timer.h"
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#define VERSION "0.0.1"
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@@ -1773,6 +1774,46 @@ static const cmdinfo_t close_cmd = {
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.oneline = "close the current open file",
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};
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+static void sleep_cb(void *opaque)
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+{
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+ bool *expired = opaque;
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+ *expired = true;
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+}
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+
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+static int sleep_f(int argc, char **argv)
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+{
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+ char *endptr;
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+ long ms;
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+ struct QEMUTimer *timer;
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+ bool expired = false;
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+
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+ ms = strtol(argv[1], &endptr, 0);
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+ if (ms < 0 || *endptr != '\0') {
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+ printf("%s is not a valid number\n", argv[1]);
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+ return 0;
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+ }
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+
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+ timer = qemu_new_timer_ns(host_clock, sleep_cb, &expired);
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+ qemu_mod_timer(timer, qemu_get_clock_ns(host_clock) + SCALE_MS * ms);
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+
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+ while (!expired) {
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+ main_loop_wait(false);
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+ }
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+
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+ qemu_free_timer(timer);
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+
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+ return 0;
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+}
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+
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+static const cmdinfo_t sleep_cmd = {
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+ .name = "sleep",
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+ .argmin = 1,
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+ .argmax = 1,
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+ .cfunc = sleep_f,
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+ .flags = CMD_NOFILE_OK,
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+ .oneline = "waits for the given value in milliseconds",
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+};
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+
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static int openfile(char *name, int flags, int growable, QDict *opts)
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{
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Error *local_err = NULL;
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@@ -2052,6 +2093,7 @@ int main(int argc, char **argv)
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add_command(&resume_cmd);
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add_command(&wait_break_cmd);
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add_command(&abort_cmd);
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+ add_command(&sleep_cmd);
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add_args_command(init_args_command);
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add_check_command(init_check_command);
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--
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1.7.1
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