refactor: More minor optimization changes (#353)

- Move data rather than cloning during data transferring step
- Try using beef?

8 files changed, 47 insertions, 38 deletions

diff --git a/Cargo.lock b/Cargo.lock
index 1c9ff7ac..b36605e0 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -101,6 +101,12 @@ dependencies = [
 ]
 
 [[package]]
+name = "beef"
+version = "0.4.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "474a626a67200bd107d44179bb3d4fc61891172d11696609264589be6a0e6a43"
+
+[[package]]
 name = "bitflags"
 version = "1.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -114,6 +120,7 @@ dependencies = [
  "assert_cmd",
  "backtrace",
  "battery",
+ "beef",
  "cargo-husky",
  "chrono",
  "clap",
diff --git a/Cargo.toml b/Cargo.toml
index 96a692f3..ed2166c1 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -18,10 +18,10 @@ path = "src/bin/main.rs"
 doc = false
 
 [profile.release]
-debug = 1
-lto = true
-# debug = true
-# lto = false
+# debug = 1
+# lto = true
+debug = true
+lto = false
 opt-level = 3
 codegen-units = 1
 
@@ -32,6 +32,7 @@ default = ["fern", "log"]
 anyhow = "1.0.34"
 backtrace = "0.3"
 battery = "0.7.8"
+beef = "0.4.4"
 chrono = "0.4.19"
 crossterm = "0.18.2"
 ctrlc = { version = "3.1", features = ["termination"] }
diff --git a/src/app/data_farmer.rs b/src/app/data_farmer.rs
index 9b1ef2ee..b2dc0cc5 100644
--- a/src/app/data_farmer.rs
+++ b/src/app/data_farmer.rs
@@ -121,7 +121,7 @@ impl DataCollection {
         self.timed_data_vec.drain(0..remove_index);
     }
 
-    pub fn eat_data(&mut self, harvested_data: &Data) {
+    pub fn eat_data(&mut self, harvested_data: Box<Data>) {
         // trace!("Eating data now...");
         let harvested_time = harvested_data.last_collection_time;
         // trace!("Harvested time: {:?}", harvested_time);
@@ -129,41 +129,39 @@ impl DataCollection {
         let mut new_entry = TimedData::default();
 
         // Network
-        if let Some(network) = &harvested_data.network {
+        if let Some(network) = harvested_data.network {
             self.eat_network(network, &mut new_entry);
         }
 
         // Memory and Swap
-        if let Some(memory) = &harvested_data.memory {
-            if let Some(swap) = &harvested_data.swap {
-                self.eat_memory_and_swap(memory, swap, &mut new_entry);
-            }
+        if let (Some(memory), Some(swap)) = (harvested_data.memory, harvested_data.swap) {
+            self.eat_memory_and_swap(memory, swap, &mut new_entry);
         }
 
         // CPU
-        if let Some(cpu) = &harvested_data.cpu {
+        if let Some(cpu) = harvested_data.cpu {
             self.eat_cpu(cpu, &mut new_entry);
         }
 
         // Temp
-        if let Some(temperature_sensors) = &harvested_data.temperature_sensors {
+        if let Some(temperature_sensors) = harvested_data.temperature_sensors {
             self.eat_temp(temperature_sensors);
         }
 
         // Disks
-        if let Some(disks) = &harvested_data.disks {
-            if let Some(io) = &harvested_data.io {
+        if let Some(disks) = harvested_data.disks {
+            if let Some(io) = harvested_data.io {
                 self.eat_disks(disks, io, harvested_time);
             }
         }
 
         // Processes
-        if let Some(list_of_processes) = &harvested_data.list_of_processes {
+        if let Some(list_of_processes) = harvested_data.list_of_processes {
             self.eat_proc(list_of_processes);
         }
 
         // Battery
-        if let Some(list_of_batteries) = &harvested_data.list_of_batteries {
+        if let Some(list_of_batteries) = harvested_data.list_of_batteries {
             self.eat_battery(list_of_batteries);
         }
 
@@ -173,7 +171,7 @@ impl DataCollection {
     }
 
     fn eat_memory_and_swap(
-        &mut self, memory: &mem::MemHarvest, swap: &mem::MemHarvest, new_entry: &mut TimedData,
+        &mut self, memory: mem::MemHarvest, swap: mem::MemHarvest, new_entry: &mut TimedData,
     ) {
         // trace!("Eating mem and swap.");
         // Memory
@@ -193,11 +191,11 @@ impl DataCollection {
         }
 
         // In addition copy over latest data for easy reference
-        self.memory_harvest = memory.clone();
-        self.swap_harvest = swap.clone();
+        self.memory_harvest = memory;
+        self.swap_harvest = swap;
     }
 
-    fn eat_network(&mut self, network: &network::NetworkHarvest, new_entry: &mut TimedData) {
+    fn eat_network(&mut self, network: network::NetworkHarvest, new_entry: &mut TimedData) {
         // trace!("Eating network.");
         // FIXME [NETWORKING; CONFIG]: The ability to config this?
         // FIXME [NETWORKING]: Support bits, support switching between decimal and binary units (move the log part to conversion and switch on the fly)
@@ -216,10 +214,10 @@ impl DataCollection {
         };
 
         // In addition copy over latest data for easy reference
-        self.network_harvest = network.clone();
+        self.network_harvest = network;
     }
 
-    fn eat_cpu(&mut self, cpu: &[cpu::CpuData], new_entry: &mut TimedData) {
+    fn eat_cpu(&mut self, cpu: Vec<cpu::CpuData>, new_entry: &mut TimedData) {
         // trace!("Eating CPU.");
         // Note this only pre-calculates the data points - the names will be
         // within the local copy of cpu_harvest.  Since it's all sequential
@@ -230,14 +228,14 @@ impl DataCollection {
         self.cpu_harvest = cpu.to_vec();
     }
 
-    fn eat_temp(&mut self, temperature_sensors: &[temperature::TempHarvest]) {
+    fn eat_temp(&mut self, temperature_sensors: Vec<temperature::TempHarvest>) {
         // trace!("Eating temps.");
         // TODO: [PO] To implement
         self.temp_harvest = temperature_sensors.to_vec();
     }
 
     fn eat_disks(
-        &mut self, disks: &[disks::DiskHarvest], io: &disks::IOHarvest, harvested_time: Instant,
+        &mut self, disks: Vec<disks::DiskHarvest>, io: disks::IOHarvest, harvested_time: Instant,
     ) {
         // trace!("Eating disks.");
         // TODO: [PO] To implement
@@ -307,17 +305,17 @@ impl DataCollection {
             }
         }
 
-        self.disk_harvest = disks.to_vec();
-        self.io_harvest = io.clone();
+        self.disk_harvest = disks;
+        self.io_harvest = io;
     }
 
-    fn eat_proc(&mut self, list_of_processes: &[processes::ProcessHarvest]) {
+    fn eat_proc(&mut self, list_of_processes: Vec<processes::ProcessHarvest>) {
         // trace!("Eating proc.");
-        self.process_harvest = list_of_processes.to_vec();
+        self.process_harvest = list_of_processes;
     }
 
-    fn eat_battery(&mut self, list_of_batteries: &[batteries::BatteryHarvest]) {
+    fn eat_battery(&mut self, list_of_batteries: Vec<batteries::BatteryHarvest>) {
         // trace!("Eating batteries.");
-        self.battery_harvest = list_of_batteries.to_vec();
+        self.battery_harvest = list_of_batteries;
     }
 }
diff --git a/src/app/query.rs b/src/app/query.rs
index 4d693bb4..c61c5dad 100644
--- a/src/app/query.rs
+++ b/src/app/query.rs
@@ -78,7 +78,7 @@ impl ProcessQuery for ProcWidgetState {
                         break;
                     }
                 } else if COMPARISON_LIST.contains(&queue_top.to_lowercase().as_str()) {
-                    return Err(QueryError("Comparison not valid here".into()));
+                    return Err(QueryError(beef::Cow::borrowed("Comparison not valid here")));
                 } else {
                     break;
                 }
@@ -117,7 +117,7 @@ impl ProcessQuery for ProcWidgetState {
                         break;
                     }
                 } else if COMPARISON_LIST.contains(&queue_top.to_lowercase().as_str()) {
-                    return Err(QueryError("Comparison not valid here".into()));
+                    return Err(QueryError(beef::Cow::borrowed("Comparison not valid here")));
                 } else {
                     break;
                 }
@@ -165,7 +165,9 @@ impl ProcessQuery for ProcWidgetState {
                     }
                 } else if queue_top == "(" {
                     if query.is_empty() {
-                        return Err(QueryError("Missing closing parentheses".into()));
+                        return Err(QueryError(beef::Cow::borrowed(
+                            "Missing closing parentheses",
+                        )));
                     }
 
                     let mut list_of_ors = VecDeque::new();
diff --git a/src/bin/main.rs b/src/bin/main.rs
index 8df793a7..869c39db 100644
--- a/src/bin/main.rs
+++ b/src/bin/main.rs
@@ -158,7 +158,7 @@ fn main() -> Result<()> {
                     handle_force_redraws(&mut app);
                 }
                 BottomEvent::Update(data) => {
-                    app.data_collection.eat_data(&data);
+                    app.data_collection.eat_data(data);
 
                     // This thing is required as otherwise, some widgets can't draw correctly w/o
                     // some data (or they need to be re-drawn).
diff --git a/src/data_conversion.rs b/src/data_conversion.rs
index 2508d029..271fa598 100644
--- a/src/data_conversion.rs
+++ b/src/data_conversion.rs
@@ -7,7 +7,7 @@ use crate::{
 };
 use data_harvester::processes::ProcessSorting;
 use indexmap::IndexSet;
-use std::collections::{HashMap, HashSet, VecDeque};
+use std::collections::{HashMap, VecDeque};
 
 /// Point is of time, data
 type Point = (f64, f64);
@@ -453,7 +453,7 @@ pub fn convert_process_data(
     // TODO [THREAD]: Thread highlighting and hiding support
     // For macOS see https://github.com/hishamhm/htop/pull/848/files
 
-    let mut complete_pid_set: HashSet<Pid> =
+    let mut complete_pid_set: fnv::FnvHashSet<Pid> =
         existing_converted_process_data.keys().copied().collect();
 
     for process in &current_data.process_harvest {
diff --git a/src/options.rs b/src/options.rs
index f3f6305c..f5edc46e 100644
--- a/src/options.rs
+++ b/src/options.rs
@@ -1,7 +1,7 @@
+use beef::Cow;
 use regex::Regex;
 use serde::{Deserialize, Serialize};
 use std::{
-    borrow::Cow,
     collections::{HashMap, HashSet},
     path::PathBuf,
     str::FromStr,
diff --git a/src/utils/error.rs b/src/utils/error.rs
index 861fc101..848b9919 100644
--- a/src/utils/error.rs
+++ b/src/utils/error.rs
@@ -1,4 +1,5 @@
-use std::{borrow::Cow, result};
+use beef::Cow;
+use std::result;
 use thiserror::Error;
 
 /// A type alias for handling errors related to Bottom.