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[Qemu-devel] [PATCH 15/17] savevm: introduce qemu_savevm_trans_{begin, c
From: |
Yoshiaki Tamura |
Subject: |
[Qemu-devel] [PATCH 15/17] savevm: introduce qemu_savevm_trans_{begin, commit}. |
Date: |
Fri, 24 Dec 2010 11:55:48 +0900 |
Introduce qemu_savevm_state_{begin,commit} to send the memory and
device info together, while avoiding cancelling memory state tracking.
Signed-off-by: Yoshiaki Tamura <address@hidden>
---
savevm.c | 88 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
sysemu.h | 2 +
2 files changed, 90 insertions(+), 0 deletions(-)
diff --git a/savevm.c b/savevm.c
index ea7da76..1e46995 100644
--- a/savevm.c
+++ b/savevm.c
@@ -1722,6 +1722,94 @@ int qemu_savevm_state_complete(Monitor *mon, QEMUFile *f)
return 0;
}
+int qemu_savevm_trans_begin(Monitor *mon, QEMUFile *f, int init)
+{
+ SaveStateEntry *se;
+ int skipped = 0;
+
+ QTAILQ_FOREACH(se, &savevm_handlers, entry) {
+ int len, stage, ret;
+
+ if (se->save_live_state == NULL)
+ continue;
+
+ /* Section type */
+ qemu_put_byte(f, QEMU_VM_SECTION_START);
+ qemu_put_be32(f, se->section_id);
+
+ /* ID string */
+ len = strlen(se->idstr);
+ qemu_put_byte(f, len);
+ qemu_put_buffer(f, (uint8_t *)se->idstr, len);
+
+ qemu_put_be32(f, se->instance_id);
+ qemu_put_be32(f, se->version_id);
+
+ stage = init ? QEMU_VM_SECTION_START : QEMU_VM_SECTION_PART;
+ ret = se->save_live_state(mon, f, stage, se->opaque);
+ if (!ret) {
+ skipped++;
+ }
+ }
+
+ if (qemu_file_has_error(f))
+ return -EIO;
+
+ return skipped;
+}
+
+int qemu_savevm_trans_complete(Monitor *mon, QEMUFile *f)
+{
+ SaveStateEntry *se;
+
+ cpu_synchronize_all_states();
+
+ QTAILQ_FOREACH(se, &savevm_handlers, entry) {
+ int ret;
+
+ if (se->save_live_state == NULL)
+ continue;
+
+ /* Section type */
+ qemu_put_byte(f, QEMU_VM_SECTION_PART);
+ qemu_put_be32(f, se->section_id);
+
+ ret = se->save_live_state(mon, f, QEMU_VM_SECTION_PART, se->opaque);
+ if (!ret) {
+ /* do not proceed to the next vmstate. */
+ return 1;
+ }
+ }
+
+ QTAILQ_FOREACH(se, &savevm_handlers, entry) {
+ int len;
+
+ if (se->save_state == NULL && se->vmsd == NULL)
+ continue;
+
+ /* Section type */
+ qemu_put_byte(f, QEMU_VM_SECTION_FULL);
+ qemu_put_be32(f, se->section_id);
+
+ /* ID string */
+ len = strlen(se->idstr);
+ qemu_put_byte(f, len);
+ qemu_put_buffer(f, (uint8_t *)se->idstr, len);
+
+ qemu_put_be32(f, se->instance_id);
+ qemu_put_be32(f, se->version_id);
+
+ vmstate_save(f, se);
+ }
+
+ qemu_put_byte(f, QEMU_VM_EOF);
+
+ if (qemu_file_has_error(f))
+ return -EIO;
+
+ return 0;
+}
+
void qemu_savevm_state_cancel(Monitor *mon, QEMUFile *f)
{
SaveStateEntry *se;
diff --git a/sysemu.h b/sysemu.h
index 735a8c8..965b477 100644
--- a/sysemu.h
+++ b/sysemu.h
@@ -80,6 +80,8 @@ int qemu_savevm_state_begin(Monitor *mon, QEMUFile *f, int
blk_enable,
int qemu_savevm_state_iterate(Monitor *mon, QEMUFile *f);
int qemu_savevm_state_complete(Monitor *mon, QEMUFile *f);
void qemu_savevm_state_cancel(Monitor *mon, QEMUFile *f);
+int qemu_savevm_trans_begin(Monitor *mon, QEMUFile *f, int init);
+int qemu_savevm_trans_complete(Monitor *mon, QEMUFile *f);
int qemu_loadvm_state(QEMUFile *f, int skip_header);
/* SLIRP */
--
1.7.1.2
- [Qemu-devel] [PATCH 00/19] Kemari for KVM v0.2.1, Yoshiaki Tamura, 2010/12/23
- [Qemu-devel] [PATCH 04/17] qemu-char: export socket_set_nodelay()., Yoshiaki Tamura, 2010/12/23
- [Qemu-devel] [PATCH 17/17] migration-tcp: modify tcp_accept_incoming_migration() to handle ft_mode, and add a hack not to close fd when ft_mode is enabled., Yoshiaki Tamura, 2010/12/23
- [Qemu-devel] [PATCH 15/17] savevm: introduce qemu_savevm_trans_{begin, commit}.,
Yoshiaki Tamura <=
- [Qemu-devel] [PATCH 11/17] ioport: insert event_tap_ioport() to ioport_write()., Yoshiaki Tamura, 2010/12/23
- [Qemu-devel] [PATCH 12/17] Insert event_tap_mmio() to cpu_physical_memory_rw() in exec.c., Yoshiaki Tamura, 2010/12/23
- [Qemu-devel] [PATCH 01/17] Make QEMUFile buf expandable, and introduce qemu_realloc_buffer() and qemu_clear_buffer()., Yoshiaki Tamura, 2010/12/23
- [Qemu-devel] [PATCH 14/17] block: insert event-tap to bdrv_aio_writev() and bdrv_aio_flush()., Yoshiaki Tamura, 2010/12/23
- [Qemu-devel] [PATCH 10/17] Call init handler of event-tap at main() in vl.c., Yoshiaki Tamura, 2010/12/23
- [Qemu-devel] [PATCH 06/17] virtio: update last_avail_idx when inuse is decreased., Yoshiaki Tamura, 2010/12/23
- [Qemu-devel] [PATCH 13/17] net: insert event-tap to qemu_send_packet() and qemu_sendv_packet_async()., Yoshiaki Tamura, 2010/12/23
- [Qemu-devel] [PATCH 03/17] Introduce skip_header parameter to qemu_loadvm_state()., Yoshiaki Tamura, 2010/12/23
- [Qemu-devel] [PATCH 08/17] savevm: introduce util functions to control ft_trans_file from savevm layer., Yoshiaki Tamura, 2010/12/23
- [Qemu-devel] [PATCH 02/17] Introduce read() to FdMigrationState., Yoshiaki Tamura, 2010/12/23