Re: [Qemu-devel] [PATCH] migration: use migration_is_active to represent active state

[Wei Yang <richard.weiyang@gmail.com>]

On Wed, Jul 17, 2019 at 08:53:41AM +0800, Wei Yang wrote:
>Wrap the check into a function to make it easy to read.
>

Hi, Dave & Juan

Do you like this one :-) ?

>Signed-off-by: Wei Yang <richardw.yang@linux.intel.com>
>---
> include/migration/misc.h |  1 +
> migration/migration.c    | 12 ++++++++----
> 2 files changed, 9 insertions(+), 4 deletions(-)
>
>diff --git a/include/migration/misc.h b/include/migration/misc.h
>index 5cdbabd094..42d6abc920 100644
>--- a/include/migration/misc.h
>+++ b/include/migration/misc.h
>@@ -61,6 +61,7 @@ void migration_object_init(void);
> void migration_shutdown(void);
> void qemu_start_incoming_migration(const char *uri, Error **errp);
> bool migration_is_idle(void);
>+bool migration_is_active(MigrationState *);
> void add_migration_state_change_notifier(Notifier *notify);
> void remove_migration_state_change_notifier(Notifier *notify);
> bool migration_in_setup(MigrationState *);
>diff --git a/migration/migration.c b/migration/migration.c
>index 43fd8297ef..4c066fc85c 100644
>--- a/migration/migration.c
>+++ b/migration/migration.c
>@@ -1529,8 +1529,7 @@ static void migrate_fd_cleanup(MigrationState *s)
>         qemu_fclose(tmp);
>     }
> 
>-    assert((s->state != MIGRATION_STATUS_ACTIVE) &&
>-           (s->state != MIGRATION_STATUS_POSTCOPY_ACTIVE));
>+    assert(!migration_is_active(s));
> 
>     if (s->state == MIGRATION_STATUS_CANCELLING) {
>         migrate_set_state(&s->state, MIGRATION_STATUS_CANCELLING,
>@@ -1690,6 +1689,12 @@ bool migration_is_idle(void)
>     return false;
> }
> 
>+bool migration_is_active(MigrationState *s)
>+{
>+    return (s->state == MIGRATION_STATUS_ACTIVE ||
>+            s->state == MIGRATION_STATUS_POSTCOPY_ACTIVE);
>+}
>+
> void migrate_init(MigrationState *s)
> {
>     /*
>@@ -3226,8 +3231,7 @@ static void *migration_thread(void *opaque)
> 
>     trace_migration_thread_setup_complete();
> 
>-    while (s->state == MIGRATION_STATUS_ACTIVE ||
>-           s->state == MIGRATION_STATUS_POSTCOPY_ACTIVE) {
>+    while (migration_is_active(s)) {
>         int64_t current_time;
> 
>         if (urgent || !qemu_file_rate_limit(s->to_dst_file)) {
>-- 
>2.17.1
>

-- 
Wei Yang
Help you, Help me