Dont flush with a lock held
authorMatt Corallo <git@bluematt.me>
Mon, 26 Aug 2019 19:57:24 +0000 (15:57 -0400)
committerMatt Corallo <git@bluematt.me>
Mon, 26 Aug 2019 19:57:24 +0000 (15:57 -0400)
src/printer.rs

index 933603ccc440d65a3af97578b92875f8e9e5f5c8..ba7173c4d120b758d4c904fe7db451dcd57f74b0 100644 (file)
@@ -44,71 +44,73 @@ impl Printer {
                                let stdout = std::io::stdout();
                                let mut out = stdout.lock();
 
-                               let stats = thread_arc.lock().unwrap();
-                               if START_SHUTDOWN.load(Ordering::Relaxed) && stats.connection_count == 0 {
-                                       break;
-                               }
+                               {
+                                       let stats = thread_arc.lock().unwrap();
+                                       if START_SHUTDOWN.load(Ordering::Relaxed) && stats.connection_count == 0 {
+                                               break;
+                                       }
+
+                                       out.write_all(b"\x1b[2J\x1b[;H\n").expect("stdout broken?");
+                                       for line in stats.lines.iter() {
+                                               out.write_all(line.as_bytes()).expect("stdout broken?");
+                                               out.write_all(b"\n").expect("stdout broken?");
+                                       }
+
+                                       out.write_all(b"\nNode counts by status:\n").expect("stdout broken?");
+                                       for i in 0..AddressState::get_count() {
+                                               out.write_all(format!("{:22}: {}\n", AddressState::from_num(i).unwrap().to_str(),
+                                                               store.get_node_count(AddressState::from_num(i).unwrap())
+                                                               ).as_bytes()).expect("stdout broken?");
+                                       }
 
-                               out.write_all(b"\x1b[2J\x1b[;H\n").expect("stdout broken?");
-                               for line in stats.lines.iter() {
-                                       out.write_all(line.as_bytes()).expect("stdout broken?");
-                                       out.write_all(b"\n").expect("stdout broken?");
-                               }
+                                       out.write_all(format!(
+                                                       "\nCurrent connections open/in progress: {}\n", stats.connection_count).as_bytes()).expect("stdout broken?");
+                                       out.write_all(format!(
+                                                       "Connections opened each second: {} (\"c x\" to change to x seconds)\n", store.get_u64(U64Setting::ConnsPerSec)
+                                                       ).as_bytes()).expect("stdout broken?");
+                                       out.write_all(format!(
+                                                       "Current block count: {}\n", stats.header_count).as_bytes()).expect("stdout broken?");
 
-                               out.write_all(b"\nNode counts by status:\n").expect("stdout broken?");
-                               for i in 0..AddressState::get_count() {
-                                       out.write_all(format!("{:22}: {}\n", AddressState::from_num(i).unwrap().to_str(),
-                                                       store.get_node_count(AddressState::from_num(i).unwrap())
+                                       out.write_all(format!(
+                                                       "Timeout for full run (in seconds): {} (\"t x\" to change to x seconds)\n", store.get_u64(U64Setting::RunTimeout)
+                                                       ).as_bytes()).expect("stdout broken?");
+                                       out.write_all(format!(
+                                                       "Minimum protocol version: {} (\"v x\" to change value to x)\n", store.get_u64(U64Setting::MinProtocolVersion)
+                                                       ).as_bytes()).expect("stdout broken?");
+                                       out.write_all(format!(
+                                                       "Subversion match regex: {} (\"s x\" to change value to x)\n", store.get_regex(RegexSetting::SubverRegex).as_str()
                                                        ).as_bytes()).expect("stdout broken?");
-                               }
 
-                               out.write_all(format!(
-                                               "\nCurrent connections open/in progress: {}\n", stats.connection_count).as_bytes()).expect("stdout broken?");
-                               out.write_all(format!(
-                                               "Connections opened each second: {} (\"c x\" to change to x seconds)\n", store.get_u64(U64Setting::ConnsPerSec)
-                                               ).as_bytes()).expect("stdout broken?");
-                               out.write_all(format!(
-                                               "Current block count: {}\n", stats.header_count).as_bytes()).expect("stdout broken?");
-
-                               out.write_all(format!(
-                                               "Timeout for full run (in seconds): {} (\"t x\" to change to x seconds)\n", store.get_u64(U64Setting::RunTimeout)
-                                               ).as_bytes()).expect("stdout broken?");
-                               out.write_all(format!(
-                                               "Minimum protocol version: {} (\"v x\" to change value to x)\n", store.get_u64(U64Setting::MinProtocolVersion)
-                                               ).as_bytes()).expect("stdout broken?");
-                               out.write_all(format!(
-                                               "Subversion match regex: {} (\"s x\" to change value to x)\n", store.get_regex(RegexSetting::SubverRegex).as_str()
-                                               ).as_bytes()).expect("stdout broken?");
-
-                               out.write_all(b"\nRetry times (in seconds):\n").expect("stdout broken?");
-                               for i in 0..AddressState::get_count() {
-                                       let scan_secs = store.get_u64(U64Setting::RescanInterval(AddressState::from_num(i).unwrap()));
+                                       out.write_all(b"\nRetry times (in seconds):\n").expect("stdout broken?");
+                                       for i in 0..AddressState::get_count() {
+                                               let scan_secs = store.get_u64(U64Setting::RescanInterval(AddressState::from_num(i).unwrap()));
+                                               out.write_all(format!(
+                                                               "{:22} ({:2}): {:5} (ie {} hrs, {} min)\n", AddressState::from_num(i).unwrap().to_str(), i,
+                                                               scan_secs, scan_secs / 60 / 60, (scan_secs / 60) % 60,
+                                                               ).as_bytes()).expect("stdout broken?");
+                                       }
+
                                        out.write_all(format!(
-                                                       "{:22} ({:2}): {:5} (ie {} hrs, {} min)\n", AddressState::from_num(i).unwrap().to_str(), i,
-                                                       scan_secs, scan_secs / 60 / 60, (scan_secs / 60) % 60,
+                                                       "\nBGP Routing Table: {} v4 paths, {} v6 paths\n",
+                                                       stats.v4_table_size, stats.v6_table_size).as_bytes()).expect("stdout broken?");
+
+                                       out.write_all(b"\nCommands:\n").expect("stdout broken?");
+                                       out.write_all(b"q: quit\n").expect("stdout broken?");
+                                       out.write_all(format!(
+                                                       "r x y: Change retry time for status x (int value, see retry times section for name mappings) to y (in seconds)\n"
+                                                       ).as_bytes()).expect("stdout broken?");
+                                       out.write_all(format!(
+                                                       "w x: Change the amount of time a node is considered WAS_GOOD after it fails to x from {} (in seconds)\n",
+                                                       store.get_u64(U64Setting::WasGoodTimeout)
                                                        ).as_bytes()).expect("stdout broken?");
+                                       out.write_all(b"a x: Scan node x\n").expect("stdout broken?");
+                                       out.write_all(b"b x: BGP Lookup IP x\n").expect("stdout broken?");
+                                       out.write_all(b"\x1b[s").expect("stdout broken?"); // Save cursor position and provide a blank line before cursor
+                                       out.write_all(b"\x1b[;H\x1b[2K").expect("stdout broken?");
+                                       out.write_all(b"Most recent log:\n").expect("stdout broken?");
+                                       out.write_all(b"\x1b[u").expect("stdout broken?"); // Restore cursor position and go up one line
                                }
 
-                               out.write_all(format!(
-                                               "\nBGP Routing Table: {} v4 paths, {} v6 paths\n",
-                                               stats.v4_table_size, stats.v6_table_size).as_bytes()).expect("stdout broken?");
-
-                               out.write_all(b"\nCommands:\n").expect("stdout broken?");
-                               out.write_all(b"q: quit\n").expect("stdout broken?");
-                               out.write_all(format!(
-                                               "r x y: Change retry time for status x (int value, see retry times section for name mappings) to y (in seconds)\n"
-                                               ).as_bytes()).expect("stdout broken?");
-                               out.write_all(format!(
-                                               "w x: Change the amount of time a node is considered WAS_GOOD after it fails to x from {} (in seconds)\n",
-                                               store.get_u64(U64Setting::WasGoodTimeout)
-                                               ).as_bytes()).expect("stdout broken?");
-                               out.write_all(b"a x: Scan node x\n").expect("stdout broken?");
-                               out.write_all(b"b x: BGP Lookup IP x\n").expect("stdout broken?");
-                               out.write_all(b"\x1b[s").expect("stdout broken?"); // Save cursor position and provide a blank line before cursor
-                               out.write_all(b"\x1b[;H\x1b[2K").expect("stdout broken?");
-                               out.write_all(b"Most recent log:\n").expect("stdout broken?");
-                               out.write_all(b"\x1b[u").expect("stdout broken?"); // Restore cursor position and go up one line
-
                                out.flush().expect("stdout broken?");
                        }
                });