From cd33d02a1012e58ee0d3c8259159e8c60cfa0a4d Mon Sep 17 00:00:00 2001 From: Kevin Wolf Date: Wed, 15 Jan 2014 15:39:10 +0100 Subject: 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 --- qemu-io-cmds.c | 42 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 42 insertions(+) (limited to 'qemu-io-cmds.c') diff --git a/qemu-io-cmds.c b/qemu-io-cmds.c index 6dfb4a5..f1de24c 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); } -- cgit v1.1