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authorKevin Wolf <kwolf@redhat.com>2014-01-15 15:39:10 +0100
committerKevin Wolf <kwolf@redhat.com>2014-01-24 17:40:03 +0100
commitcd33d02a1012e58ee0d3c8259159e8c60cfa0a4d (patch)
treefec65baabfcf3f9b5954a7a7ffc6976240b0ef4b
parentb35ee7fb2308e09092488029b5a9e456ce61bbe6 (diff)
downloadqemu-arm-cd33d02a1012e58ee0d3c8259159e8c60cfa0a4d.tar.gz
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: Kevin Wolf <kwolf@redhat.com>
-rw-r--r--qemu-io-cmds.c42
1 files changed, 42 insertions, 0 deletions
diff --git a/qemu-io-cmds.c b/qemu-io-cmds.c
index 6dfb4a51ae..f1de24c91c 100644
--- a/qemu-io-cmds.c
+++ b/qemu-io-cmds.c
@@ -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);
}