Bootstrap command refactoring: quality-of-life improvements (step 4) #127321
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This makes it easier to use commands in a "Fluent-API" style, and also removes the need for the `AsMut` trait hack that was used before to allow passing both `BootstrapCommand` and `&mut BootstrapCommand` to `Builder::run`. The `Builder::run` method was still kept and can be used explicitly, if needed for some reason.
This is simply a quality-of-life improvement to make command creation in bootstrap a bit shorter and more discoverable.
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This PR changes how LLVM is built. Consider updating src/bootstrap/download-ci-llvm-stamp. |
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This should make it harder to accidentally forget to use results of methods on `BootstrapCommand` and `CommandStatus`.
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@bors r+ rollup=iffy |
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☀️ Test successful - checks-actions |
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Finished benchmarking commit (35e6e4c): comparison URL. Overall result: ❌ regressions - no action needed@rustbot label: -perf-regression Instruction countThis is a highly reliable metric that was used to determine the overall result at the top of this comment.
Max RSS (memory usage)Results (secondary -1.5%)This is a less reliable metric that may be of interest but was not used to determine the overall result at the top of this comment.
CyclesResults (secondary 0.7%)This is a less reliable metric that may be of interest but was not used to determine the overall result at the top of this comment.
Binary sizeThis benchmark run did not return any relevant results for this metric. Bootstrap: 699.372s -> 700.365s (0.14%) |
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…nur-ozkan Bootstrap command refactoring: improve debuggability (step 5) Continuation of rust-lang#127321. This PR improves the debuggability of command execution, by improving the output logged when a command fails (it now includes the exact location where the command was created and where it was executed), and also by adding a "drop bomb", which will panic if a command was created, but not executed (which is probably a bug). Here is how the output of a failed command looks like: ``` Command "git" "foo" "[bar]" (failure_mode=Exit, stdout_mode=Capture, stderr_mode=Capture) did not execute successfully. Expected success, got exit status: 1 Created at: src/core/build_steps/compile.rs:1699:9 Executed at: src/core/build_steps/compile.rs:1699:58 STDOUT ---- STDERR ---- git: 'foo' is not a git command. See 'git --help'. ``` And this is what is printed if you forget to execute a command: ``` thread 'main' panicked at /projects/personal/rust/rust/src/tools/build_helper/src/drop_bomb/mod.rs:42:13: command constructed at `src/core/build_steps/compile.rs:1699:9` was dropped without being executed: `git` ``` Best reviewed commit by commit. Tracking issue: rust-lang#126819 r? `@onur-ozkan`
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…nur-ozkan Bootstrap command refactoring: improve debuggability (step 5) Continuation of rust-lang#127321. This PR improves the debuggability of command execution, by improving the output logged when a command fails (it now includes the exact location where the command was created and where it was executed), and also by adding a "drop bomb", which will panic if a command was created, but not executed (which is probably a bug). Here is how the output of a failed command looks like: ``` Command "git" "foo" "[bar]" (failure_mode=Exit, stdout_mode=Capture, stderr_mode=Capture) did not execute successfully. Expected success, got exit status: 1 Created at: src/core/build_steps/compile.rs:1699:9 Executed at: src/core/build_steps/compile.rs:1699:58 STDOUT ---- STDERR ---- git: 'foo' is not a git command. See 'git --help'. ``` And this is what is printed if you forget to execute a command: ``` thread 'main' panicked at /projects/personal/rust/rust/src/tools/build_helper/src/drop_bomb/mod.rs:42:13: command constructed at `src/core/build_steps/compile.rs:1699:9` was dropped without being executed: `git` ``` Best reviewed commit by commit. Tracking issue: rust-lang#126819 r? `@onur-ozkan`
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Continuation of #127120.
This PR simply introduce two new functions (
BootstrapCommand:runandcommand) that make it a bit easier to use commands in bootstrap. It also adds several#[must_use]annotations. This shouldn't (hopefully) have any effect on behavior.Especially the first commit IMO makes any code that runs commands more readable, and allows using the API in a fluent way, without needing to jump back and forth between the command and the
Build(er).Tracking issue: #126819
r? @onur-ozkan