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migration: eliminate s->migration_file

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The indirection is useless now.  Backends can open s->file directly.

Reviewed-by: Orit Wasserman <owasserm@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
This commit is contained in:
Paolo Bonzini 2013-02-22 17:36:47 +01:00 committed by Juan Quintela
parent 404a7c05bc
commit b352365f5a
6 changed files with 11 additions and 56 deletions
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2
include/migration/migration.h
View file

@ -36,9 +36,7 @@ struct MigrationState
size_t xfer_limit;
QemuThread thread;
QEMUBH *cleanup_bh;
QEMUFile *file;
QEMUFile *migration_file;
int state;
MigrationParams params;

4
migration-exec.c
View file

@ -35,8 +35,8 @@
void exec_start_outgoing_migration(MigrationState *s, const char *command, Error **errp)
{
s->migration_file = qemu_popen_cmd(command, "w");
if (s->migration_file == NULL) {
s->file = qemu_popen_cmd(command, "w");
if (s->file == NULL) {
error_setg_errno(errp, errno, "failed to popen the migration target");
return;
}

2
migration-fd.c
View file

@ -36,7 +36,7 @@ void fd_start_outgoing_migration(MigrationState *s, const char *fdname, Error **
if (fd == -1) {
return;
}
s->migration_file = qemu_fdopen(fd, "wb");
s->file = qemu_fdopen(fd, "wb");
migrate_fd_connect(s);
}

4
migration-tcp.c
View file

@ -35,11 +35,11 @@ static void tcp_wait_for_connect(int fd, void *opaque)
if (fd < 0) {
DPRINTF("migrate connect error\n");
s->migration_file = NULL;
s->file = NULL;
migrate_fd_error(s);
} else {
DPRINTF("migrate connect success\n");
s->migration_file = qemu_fopen_socket(fd, "wb");
s->file = qemu_fopen_socket(fd, "wb");
migrate_fd_connect(s);
}
}

4
migration-unix.c
View file

@ -35,11 +35,11 @@ static void unix_wait_for_connect(int fd, void *opaque)
if (fd < 0) {
DPRINTF("migrate connect error\n");
s->migration_file = NULL;
s->file = NULL;
migrate_fd_error(s);
} else {
DPRINTF("migrate connect success\n");
s->migration_file = qemu_fopen_socket(fd, "wb");
s->file = qemu_fopen_socket(fd, "wb");
migrate_fd_connect(s);
}
}

51
migration.c
View file

@ -270,9 +270,6 @@ static void migrate_fd_cleanup(void *opaque)
if (s->file) {
DPRINTF("closing file\n");
qemu_fclose(s->file);
s->file = NULL;
qemu_mutex_unlock_iothread();
qemu_thread_join(&s->thread);
qemu_mutex_lock_iothread();
@ -280,7 +277,7 @@ static void migrate_fd_cleanup(void *opaque)
migrate_fd_close(s);
}
assert(s->migration_file == NULL);
assert(s->file == NULL);
assert(s->state != MIG_STATE_ACTIVE);
if (s->state != MIG_STATE_COMPLETED) {
@ -317,9 +314,9 @@ static void migrate_fd_cancel(MigrationState *s)
int migrate_fd_close(MigrationState *s)
{
int rc = 0;
if (s->migration_file != NULL) {
rc = qemu_fclose(s->migration_file);
s->migration_file = NULL;
if (s->file != NULL) {
rc = qemu_fclose(s->file);
s->file = NULL;
}
return rc;
}
@ -506,39 +503,6 @@ int64_t migrate_xbzrle_cache_size(void)
/* migration thread support */
static int migration_put_buffer(void *opaque, const uint8_t *buf,
int64_t pos, int size)
{
MigrationState *s = opaque;
int ret;
DPRINTF("putting %d bytes at %" PRId64 "\n", size, pos);
if (size <= 0) {
return size;
}
qemu_put_buffer(s->migration_file, buf, size);
ret = qemu_file_get_error(s->migration_file);
if (ret) {
return ret;
}
return size;
}
static int migration_close(void *opaque)
{
return 0;
}
static int migration_get_fd(void *opaque)
{
MigrationState *s = opaque;
return qemu_get_fd(s->migration_file);
}
static void *migration_thread(void *opaque)
{
MigrationState *s = opaque;
@ -628,12 +592,6 @@ static void *migration_thread(void *opaque)
return NULL;
}
static const QEMUFileOps migration_file_ops = {
.get_fd = migration_get_fd,
.put_buffer = migration_put_buffer,
.close = migration_close,
};
void migrate_fd_connect(MigrationState *s)
{
s->state = MIG_STATE_ACTIVE;
@ -642,7 +600,6 @@ void migrate_fd_connect(MigrationState *s)
/* This is a best 1st approximation. ns to ms */
s->expected_downtime = max_downtime/1000000;
s->cleanup_bh = qemu_bh_new(migrate_fd_cleanup, s);
s->file = qemu_fopen_ops(s, &migration_file_ops);
qemu_file_set_rate_limit(s->file,
s->bandwidth_limit / XFER_LIMIT_RATIO);