Commit cd33d02a authored by Kevin Wolf's avatar Kevin Wolf

qemu-io: New command 'sleep'

There is no easy way to check that a request correctly waits for a
different request. With a sleep command we can at least approximate it.
Signed-off-by: default avatarKevin Wolf <kwolf@redhat.com>
parent b35ee7fb
......@@ -12,6 +12,7 @@
#include "block/block_int.h"
#include "block/qapi.h"
#include "qemu/main-loop.h"
#include "qemu/timer.h"
#define CMD_NOFILE_OK 0x01
......@@ -2053,6 +2054,46 @@ static const cmdinfo_t abort_cmd = {
.oneline = "simulate a program crash using abort(3)",
};
static void sleep_cb(void *opaque)
{
bool *expired = opaque;
*expired = true;
}
static int sleep_f(BlockDriverState *bs, int argc, char **argv)
{
char *endptr;
long ms;
struct QEMUTimer *timer;
bool expired = false;
ms = strtol(argv[1], &endptr, 0);
if (ms < 0 || *endptr != '\0') {
printf("%s is not a valid number\n", argv[1]);
return 0;
}
timer = timer_new_ns(QEMU_CLOCK_HOST, sleep_cb, &expired);
timer_mod(timer, qemu_clock_get_ns(QEMU_CLOCK_HOST) + SCALE_MS * ms);
while (!expired) {
main_loop_wait(false);
}
timer_free(timer);
return 0;
}
static const cmdinfo_t sleep_cmd = {
.name = "sleep",
.argmin = 1,
.argmax = 1,
.cfunc = sleep_f,
.flags = CMD_NOFILE_OK,
.oneline = "waits for the given value in milliseconds",
};
static void help_oneline(const char *cmd, const cmdinfo_t *ct)
{
if (cmd) {
......@@ -2166,4 +2207,5 @@ static void __attribute((constructor)) init_qemuio_commands(void)
qemuio_add_command(&resume_cmd);
qemuio_add_command(&wait_break_cmd);
qemuio_add_command(&abort_cmd);
qemuio_add_command(&sleep_cmd);
}
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