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author | Kevin Wolf <kwolf@redhat.com> | 2014-01-15 15:39:10 +0100 |
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committer | Kevin Wolf <kwolf@redhat.com> | 2014-01-24 17:40:03 +0100 |
commit | cd33d02a1012e58ee0d3c8259159e8c60cfa0a4d (patch) | |
tree | fec65baabfcf3f9b5954a7a7ffc6976240b0ef4b /qemu-io-cmds.c | |
parent | b35ee7fb2308e09092488029b5a9e456ce61bbe6 (diff) | |
download | qemu-cd33d02a1012e58ee0d3c8259159e8c60cfa0a4d.zip qemu-cd33d02a1012e58ee0d3c8259159e8c60cfa0a4d.tar.gz qemu-cd33d02a1012e58ee0d3c8259159e8c60cfa0a4d.tar.bz2 |
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>
Diffstat (limited to 'qemu-io-cmds.c')
-rw-r--r-- | qemu-io-cmds.c | 42 |
1 files changed, 42 insertions, 0 deletions
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); } |