Made all mining threads low-priority.

Cargo.toml

@@ -15,6 +15,7 @@ log = "0.4.14"
 simple_logger = "1.11.0"
 rust-crypto = "^0.2"
 num_cpus = "1.13.0"
+thread-priority = "0.2.1"
 byteorder = "1.3.2"
 web-view = { version = "0.7.2", features = [] }
 tinyfiledialogs = "3.3.10"

src/main.rs

@@ -17,6 +17,7 @@ use std::time::{Duration, Instant};
 use winapi::um::wincon::{AttachConsole, FreeConsole, ATTACH_PARENT_PROCESS};
 
 use rand::RngCore;
+use thread_priority::*;
 use serde::Deserialize;
 use web_view::*;
 use getopts::Options;
@@ -420,6 +421,7 @@ fn create_key(context: Arc<Mutex<Context>>) {
         let mining = mining.clone();
         let miners_count = miners_count.clone();
         thread::spawn(move || {
+            let _ = set_current_thread_priority(ThreadPriority::Min);
             miners_count.fetch_add(1, Ordering::Relaxed);
             match generate_key(KEYSTORE_DIFFICULTY, mining.clone()) {
                 None => {

src/miner.rs

@@ -9,6 +9,7 @@ use crypto::sha2::Sha256;
 #[allow(unused_imports)]
 use log::{debug, error, info, trace, warn};
 use num_cpus;
+use thread_priority::*;
 
 use crate::{Block, Bytes, Context, hash_is_good};
 use crate::blockchain::blockchain::BlockQuality;
@@ -142,6 +143,7 @@ impl Miner {
             let mining = mining.clone();
             let live_threads = live_threads.clone();
             thread::spawn(move || {
+                let _ = set_current_thread_priority(ThreadPriority::Min);
                 live_threads.fetch_add(1, Ordering::SeqCst);
                 match find_hash(&mut Sha256::new(), block, mining.clone()) {
                     None => {