kata-containers/cloud-hypervisor
1
0
Fork 0
mirror of https://github.com/cloud-hypervisor/cloud-hypervisor.git synced 2026-08-05 02:19:16 +00:00
Code Issues Packages Projects Releases Wiki Activity

misc: Simplify snapshot/restore by using helper functions

Browse Source 
Simplify snapshot & restore code by using generics to specify helper
functions that take / make a Serialize / Deserialize struct

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
This commit is contained in:
Rob Bradford
2021-04-08 10:20:10 +01:00
parent 4e4c5fb6aa
commit 6f5d4702d4
18 changed files with 108 additions and 550 deletions
Download Patch File Download Diff File Expand all files Collapse all files

38
devices/src/ioapic.rs
View File

@@ -20,10 +20,7 @@ use vm_device::interrupt::{
};
use vm_device::BusDevice;
use vm_memory::GuestAddress;
use vm_migration::{
Migratable, MigratableError, Pausable, Snapshot, SnapshotDataSection, Snapshottable,
Transportable,
};
use vm_migration::{Migratable, MigratableError, Pausable, Snapshot, Snapshottable, Transportable};
use vmm_sys_util::eventfd::EventFd;
#[derive(Serialize, Deserialize)]
@@ -418,38 +415,13 @@ impl Snapshottable for Ioapic {
}
fn snapshot(&mut self) -> std::result::Result<Snapshot, MigratableError> {
let snapshot =
serde_json::to_vec(&self.state()).map_err(|e| MigratableError::Snapshot(e.into()))?;
let mut ioapic_snapshot = Snapshot::new(self.id.as_str());
ioapic_snapshot.add_data_section(SnapshotDataSection {
id: format!("{}-section", self.id),
snapshot,
});
Ok(ioapic_snapshot)
Snapshot::new_from_state(&self.id, &self.state())
}
fn restore(&mut self, snapshot: Snapshot) -> std::result::Result<(), MigratableError> {
if let Some(ioapic_section) = snapshot.snapshot_data.get(&format!("{}-section", self.id)) {
let ioapic_state = match serde_json::from_slice(&ioapic_section.snapshot) {
Ok(state) => state,
Err(error) => {
return Err(MigratableError::Restore(anyhow!(
"Could not deserialize IOAPIC {}",
error
)))
}
};
return self.set_state(&ioapic_state).map_err(|e| {
MigratableError::Restore(anyhow!("Could not restore IOAPIC state {:?}", e))
});
}
Err(MigratableError::Restore(anyhow!(
"Could not find IOAPIC snapshot section"
)))
self.set_state(&snapshot.to_state(&self.id)?).map_err(|e| {
MigratableError::Restore(anyhow!("Could not restore state for {}: {:?}", self.id, e))
})
}
}