Currently, only vm_start() and vm_stop() change the VM state.
That's, the state is only changed when starting or stopping the VM.
This commit adds the runstate_set() function, which makes it possible
to also do state transitions when the VM is stopped or running.
Additional states are also added and the current state is stored.
Signed-off-by: Luiz Capitulino <lcapitul...@redhat.com>
---
cpus.c | 1 +
migration.c | 8 +++++++-
sysemu.h | 9 ++++++++-
vl.c | 20 ++++++++++++++++++++
4 files changed, 36 insertions(+), 2 deletions(-)
diff --git a/cpus.c b/cpus.c
index 76a79ac..3444bc0 100644
--- a/cpus.c
+++ b/cpus.c
@@ -124,6 +124,7 @@ static void do_vm_stop(RunState state)
cpu_disable_ticks();
vm_running = 0;
pause_all_vcpus();
+ runstate_set(state);
vm_state_notify(0, state);
qemu_aio_flush();
bdrv_flush_all();
diff --git a/migration.c b/migration.c
index 29f1a76..f2499cf 100644
--- a/migration.c
+++ b/migration.c
@@ -72,8 +72,11 @@ void process_incoming_migration(QEMUFile *f)
incoming_expected = false;
- if (autostart)
+ if (autostart) {
vm_start();
+ } else {
+ runstate_set(RSTATE_PRE_LAUNCH);
+ }
}
int do_migrate(Monitor *mon, const QDict *qdict, QObject **ret_data)
@@ -390,6 +393,9 @@ void migrate_fd_put_ready(void *opaque)
}
state = MIG_STATE_ERROR;
}
+ if (state == MIG_STATE_COMPLETED) {
+ runstate_set(RSTATE_POST_MIGRATE);
+ }
s->state = state;
notifier_list_notify(&migration_state_notifiers, NULL);
}
diff --git a/sysemu.h b/sysemu.h
index a3846ca..19088aa 100644
--- a/sysemu.h
+++ b/sysemu.h
@@ -11,16 +11,21 @@
/* vl.c */
typedef enum {
+ RSTATE_NO_STATE,
RSTATE_DEBUG, /* qemu is running under gdb */
+ RSTATE_IN_MIGRATE, /* paused waiting for an incoming migration */
RSTATE_PANICKED, /* paused due to an internal error */
RSTATE_IO_ERROR, /* paused due to an I/O error */
RSTATE_PAUSED, /* paused by the user (ie. the 'stop' command) */
+ RSTATE_POST_MIGRATE, /* paused following a successful migration */
+ RSTATE_PRE_LAUNCH, /* qemu was started with -S and haven't started */
RSTATE_PRE_MIGRATE, /* paused preparing to finish migrate */
RSTATE_RESTORE, /* paused restoring the VM state */
RSTATE_RUNNING, /* qemu is running */
RSTATE_SAVEVM, /* paused saving VM state */
RSTATE_SHUTDOWN, /* guest shut down and -no-shutdown is in use */
- RSTATE_WATCHDOG /* watchdog fired and qemu is configured to pause */
+ RSTATE_WATCHDOG, /* watchdog fired and qemu is configured to pause */
+ RSTATE_MAX
} RunState;
extern const char *bios_name;
@@ -31,6 +36,8 @@ extern uint8_t qemu_uuid[];
int qemu_uuid_parse(const char *str, uint8_t *uuid);
#define UUID_FMT
"%02hhx%02hhx%02hhx%02hhx-%02hhx%02hhx-%02hhx%02hhx-%02hhx%02hhx-%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx"
+bool runstate_check(RunState state);
+void runstate_set(RunState new_state);
typedef struct vm_change_state_entry VMChangeStateEntry;
typedef void VMChangeStateHandler(void *opaque, int running, RunState state);
diff --git a/vl.c b/vl.c
index ca7d3c4..9926d2a 100644
--- a/vl.c
+++ b/vl.c
@@ -323,6 +323,22 @@ static int default_driver_check(QemuOpts *opts, void
*opaque)
}
/***********************************************************/
+/* QEMU state */
+
+static RunState current_run_state = RSTATE_NO_STATE;
+
+bool runstate_check(RunState state)
+{
+ return current_run_state == state;
+}
+
+void runstate_set(RunState new_state)
+{
+ assert(new_state < RSTATE_MAX);
+ current_run_state = new_state;
+}
+
+/***********************************************************/
/* real time host monotonic timer */
/***********************************************************/
@@ -1161,6 +1177,7 @@ void vm_start(void)
if (!vm_running) {
cpu_enable_ticks();
vm_running = 1;
+ runstate_set(RSTATE_RUNNING);
vm_state_notify(1, RSTATE_RUNNING);
resume_all_vcpus();
monitor_protocol_event(QEVENT_RESUME, NULL);
@@ -3437,6 +3454,7 @@ int main(int argc, char **argv, char **envp)
}
if (incoming) {
+ runstate_set(RSTATE_IN_MIGRATE);
int ret = qemu_start_incoming_migration(incoming);
if (ret < 0) {
fprintf(stderr, "Migration failed. Exit code %s(%d), exiting.\n",
@@ -3445,6 +3463,8 @@ int main(int argc, char **argv, char **envp)
}
} else if (autostart) {
vm_start();
+ } else {
+ runstate_set(RSTATE_PRE_LAUNCH);
}
os_setup_post();
--
1.7.7.rc0.72.g4b5ea
