Replace stopwatch with a builtin implementation to avoid extra depend…

…encies

stopwatch crate has too much dependencies:

    $ cargo tree
    ...
    ├── stopwatch v0.0.7
    │   └── num v0.1.42
    │       ├── num-bigint v0.1.44
    │       │   ├── num-integer v0.1.46 (*)
    │       │   ├── num-traits v0.2.18 (*)
    │       │   ├── rand v0.4.6
    │       │   │   └── libc v0.2.153
    │       │   └── rustc-serialize v0.3.25
    │       ├── num-complex v0.1.43
    │       │   ├── num-traits v0.2.18 (*)
    │       │   └── rustc-serialize v0.3.25
    │       ├── num-integer v0.1.46 (*)
    │       ├── num-iter v0.1.44 (*)
    │       ├── num-rational v0.1.42
    │       │   ├── num-bigint v0.1.44 (*)
    │       │   ├── num-integer v0.1.46 (*)
    │       │   ├── num-traits v0.2.18 (*)
    │       │   └── rustc-serialize v0.3.25
    │       └── num-traits v0.2.18 (*)
    ...

And one of them after upgrading rust toolchain fail to compiles:

    Checking num-bigint v0.1.44
error[E0658]: use of unstable library feature 'libstd_sys_internals': used by the panic! macro
  --> /home/runner/.cargo/registry/src/index.crates.io-6f17d22bba15001f/num-bigint-0.1.44/src/bigint.rs:41:64
   |
41 | #[cfg_attr(feature = "rustc-serialize", derive(RustcEncodable, RustcDecodable))]
   |                                                                ^^^^^^^^^^^^^^
   |
   = help: add `#![feature(libstd_sys_internals)]` to the crate attributes to enable
   = note: this compiler was built on 2024-03-27; consider upgrading it if it is out of date
   = note: this error originates in the derive macro `RustcDecodable` (in Nightly builds, run with -Z macro-backtrace for more info)

So let's write our own implementation.

Cargo.toml

@@ -39,7 +39,6 @@ flexi_logger = { version = "0.27", default-features = false }
 log = { version = "0.4", default-features = false }
 futures-util = { version = "*", default-features = false }
 semver = { version = "*", default-features = false }
-stopwatch = { version = "*", default-features = false }
 serde = { version = "*", features = ["derive"] }
 serde_yaml = { version = "*", default-features = false }
 quick-xml = { version = "*", features = ["serialize"] }

src/common/mod.rs

@@ -0,0 +1,3 @@
+mod stopwatch;
+
+pub use stopwatch::Stopwatch;

src/common/stopwatch.rs

@@ -0,0 +1,22 @@
+/// Stupid and simple implementation of stopwatch.
+use std::time::{Duration, Instant};
+
+pub struct Stopwatch {
+    start_time: Instant,
+}
+
+impl Stopwatch {
+    pub fn start_new() -> Stopwatch {
+        Stopwatch {
+            start_time: Instant::now(),
+        }
+    }
+
+    pub fn elapsed_ms(&self) -> u64 {
+        return self.elapsed().as_millis() as u64;
+    }
+
+    pub fn elapsed(&self) -> Duration {
+        return self.start_time.elapsed();
+    }
+}

src/interpreter/worker.rs

@@ -1,4 +1,5 @@
 use crate::{
+    common::Stopwatch,
     interpreter::clickhouse::{Columns, TraceType},
     interpreter::{flamegraph, ContextArc},
     view::{self, Navigation},
@@ -14,7 +15,6 @@ use std::collections::HashMap;
 use std::sync::{Arc, Mutex};
 use std::thread;
 use std::time::Duration;
-use stopwatch::Stopwatch;
 
 #[derive(Debug, Clone)]
 pub enum Event {

src/main.rs

@@ -3,6 +3,7 @@ use backtrace::Backtrace;
 use flexi_logger::{LogSpecification, Logger};
 use std::panic::{self, PanicInfo};
 
+mod common;
 mod interpreter;
 mod view;