From 350d695f7c249005935c4006a1ecdcf3f50b2818 Mon Sep 17 00:00:00 2001 From: "andy.boot" Date: Sat, 18 Jan 2020 21:57:11 +0000 Subject: [PATCH 1/2] Add num_cpus as Cargo dependency Will be used to detect single core computers which crash Jwalk --- Cargo.lock | 80 ++++++++++++++++++++++++++++-------------------------- Cargo.toml | 1 + 2 files changed, 42 insertions(+), 39 deletions(-) diff --git a/Cargo.lock b/Cargo.lock index 1c6ae703..c7364806 100644 --- a/Cargo.lock +++ b/Cargo.lock @@ -21,7 +21,7 @@ name = "assert_cli" version = "0.6.3" source = "registry+https://github.com/rust-lang/crates.io-index" dependencies = [ - "colored 1.9.0 (registry+https://github.com/rust-lang/crates.io-index)", + "colored 1.9.2 (registry+https://github.com/rust-lang/crates.io-index)", "difference 2.0.0 (registry+https://github.com/rust-lang/crates.io-index)", "environment 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)", "failure 0.1.6 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"checksum winapi-i686-pc-windows-gnu 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6" "checksum winapi-x86_64-pc-windows-gnu 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f" diff --git a/Cargo.toml b/Cargo.toml index 2b05f2e9..100a5c1d 100644 --- a/Cargo.toml +++ b/Cargo.toml @@ -24,6 +24,7 @@ path = "src/main.rs" ansi_term = "=0.12" clap = "=2.33" jwalk = "0.4.0" +num_cpus = "1.12" [dev-dependencies] assert_cli = "=0.6" From 3d2477e5544262c314be3479c749462ba048d0a1 Mon Sep 17 00:00:00 2001 From: "andy.boot" Date: Sat, 18 Jan 2020 22:04:08 +0000 Subject: [PATCH 2/2] Allow dust to run on single core machines Force dust to use 2 threads if there is only 1 cpu JWalk breaks if it tries to run on a single cpu https://github.com/jessegrosjean/jwalk/issues/15 This is a hack because I can't figure out how to fix JWalk. This code and the num_cpu crate can be removed when the bug is fixed Also I have conflated cpus with cores while describing this issue. It is very difficult to test as I don't have a single core machine. --- src/main.rs | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) diff --git a/src/main.rs b/src/main.rs index 9e63edeb..a4bf17e6 100644 --- a/src/main.rs +++ b/src/main.rs @@ -96,12 +96,23 @@ fn main() { } }; - let threads = options.value_of("threads").and_then(|threads| { + let temp_threads = options.value_of("threads").and_then(|threads| { threads .parse::() .map_err(|_| eprintln!("Ignoring bad value for threads: {:?}", threads)) .ok() }); + // Bug in JWalk + // https://github.com/jessegrosjean/jwalk/issues/15 + // We force it to use 2 threads if there is only 1 cpu + // as JWalk breaks if it tries to run on a single cpu + let threads = { + if temp_threads.is_none() && num_cpus::get() == 1 { + Some(2) + } else { + temp_threads + } + }; let depth = options.value_of("depth").and_then(|depth| { depth