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main: Don't panic (by calling .expect()) if writing to the log fails

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As this can happen during the running of the VMM we should be very
careful not to panic() as that can lead to a thread being used by the VM
disappearing.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
This commit is contained in:
Rob Bradford 2020-02-03 17:13:18 +00:00 committed by Samuel Ortiz
parent 880a57c920
commit 7cb61d3960
1 changed files with 3 additions and 3 deletions
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6
src/main.rs
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@ -38,7 +38,7 @@ impl log::Log for Logger {
let now = std::time::Instant::now();
let duration = now.duration_since(self.start);
if record.file().is_some() && record.line().is_some() {
if let Err(e) = if record.file().is_some() && record.line().is_some() {
writeln!(
*(*(self.output.lock().unwrap())),
"cloud-hypervisor: {:?}: {}:{}:{} -- {}",
@ -48,7 +48,6 @@ impl log::Log for Logger {
record.line().unwrap(),
record.args()
)
.expect("Failed to write to log file");
} else {
writeln!(
*(*(self.output.lock().unwrap())),
@ -58,7 +57,8 @@ impl log::Log for Logger {
record.target(),
record.args()
)
.expect("Failed to write to log file");
} {
eprintln!("Error writing log output: {:?}", e);
}
}
fn flush(&self) {}