[Sangho Lee (sangho2)]

This PR allows every CPU to run userland runner processes. All threads and the broker of a single process share one CPU at a time, so different processes can run in parallel, including their I/O. For now, a single multithreaded guest does not speed up due to the lack of TLB shootdowns and fine-grained locking.

[github-actions]

ℹ️ Note: This semver check was run against the sanghle/ulitebox/smp-2-cpus-online branch, not main or ulitebox.

🤖 SemverChecks 🤖 ⚠️ Potential breaking API changes detected ⚠️

Click for details

--- failure enum_no_repr_variant_discriminant_changed: enum variant had its discriminant change value ---

Description:
The enum's variant had its discriminant value change. This breaks downstream code that used its value via a numeric cast like `as isize`.
        ref: https://doc.rust-lang.org/reference/items/enumerations.html#assigning-discriminant-values
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.51.0/src/lints/enum_no_repr_variant_discriminant_changed.ron

Failed in:
  variant PathError::NoSuchFileOrDirectory 0 -> 1 in /home/runner/work/litebox/litebox/litebox/src/fs/errors.rs:290
  variant PathError::NoSearchPerms 1 -> 2 in /home/runner/work/litebox/litebox/litebox/src/fs/errors.rs:292
  variant PathError::InvalidPathname 2 -> 3 in /home/runner/work/litebox/litebox/litebox/src/fs/errors.rs:294
  variant PathError::MissingComponent 3 -> 4 in /home/runner/work/litebox/litebox/litebox/src/fs/errors.rs:296
  variant PathError::ComponentNotADirectory 4 -> 5 in /home/runner/work/litebox/litebox/litebox/src/fs/errors.rs:298

--- failure enum_variant_added: enum variant added on exhaustive enum ---

Description:
A publicly-visible enum without #[non_exhaustive] has a new variant.
        ref: https://doc.rust-lang.org/cargo/reference/semver.html#enum-variant-new
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.51.0/src/lints/enum_variant_added.ron

Failed in:
  variant PathError:TooManySymlinks in /home/runner/work/litebox/litebox/litebox/src/fs/errors.rs:288

--- failure method_parameter_count_changed: pub method parameter count changed ---

Description:
A publicly-visible method now takes a different number of parameters, not counting the receiver (self) parameter.
        ref: https://doc.rust-lang.org/cargo/reference/semver.html#fn-change-arity
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.51.0/src/lints/method_parameter_count_changed.ron

Failed in:
  litebox::LiteBox::path_file_status takes 2 parameters in /home/runner/work/litebox/litebox/target/semver-checks/git-sanghle_ulitebox_smp_2_cpus_online/949ece8ce3936ec449933ed551ebbbee1351a1d4/litebox/src/fs/file.rs:143, but now takes 3 parameters in /home/runner/work/litebox/litebox/litebox/src/fs/file.rs:148

--- failure trait_method_added: pub trait method added ---

Description:
A non-sealed public trait added a new method without a default implementation, which breaks downstream implementations of the trait
        ref: https://doc.rust-lang.org/cargo/reference/semver.html#trait-new-item-no-default
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.51.0/src/lints/trait_method_added.ron

Failed in:
  trait method litebox::platform::page_mgmt::PageReservation::merge in file /home/runner/work/litebox/litebox/litebox/src/platform/page_mgmt.rs:29

--- failure enum_discriminants_undefined_non_unit_variant: enum's variants no longer have defined discriminants due to non-unit variant ---

Description:
An enum's variants no longer have well-defined discriminant values due to a tuple or struct variant in the enum. This breaks downstream code that accesses discriminants via a numeric cast like `as isize`.
        ref: https://doc.rust-lang.org/reference/items/enumerations.html#assigning-discriminant-values
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.51.0/src/lints/enum_discriminants_undefined_non_unit_variant.ron

Failed in:
  enum WalkStopReason in /home/runner/work/litebox/litebox/litebox_broker_core/src/fs/backend.rs:413

--- failure enum_no_repr_variant_discriminant_changed: enum variant had its discriminant change value ---

Description:
The enum's variant had its discriminant value change. This breaks downstream code that used its value via a numeric cast like `as isize`.
        ref: https://doc.rust-lang.org/reference/items/enumerations.html#assigning-discriminant-values
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.51.0/src/lints/enum_no_repr_variant_discriminant_changed.ron

Failed in:
  variant PathError::NoSuchFileOrDirectory 0 -> 1 in /home/runner/work/litebox/litebox/litebox_broker_core/src/fs/errors.rs:245
  variant PathError::NoSearchPerms 1 -> 2 in /home/runner/work/litebox/litebox/litebox_broker_core/src/fs/errors.rs:247
  variant PathError::InvalidPathname 2 -> 3 in /home/runner/work/litebox/litebox/litebox_broker_core/src/fs/errors.rs:249
  variant PathError::MissingComponent 3 -> 4 in /home/runner/work/litebox/litebox/litebox_broker_core/src/fs/errors.rs:251
  variant PathError::ComponentNotADirectory 4 -> 5 in /home/runner/work/litebox/litebox/litebox_broker_core/src/fs/errors.rs:253

--- failure enum_unit_variant_changed_kind: An enum unit variant changed kind ---

Description:
A public enum's exhaustive unit variant has changed to a different kind of enum variant, breaking possible instantiations and patterns.
        ref: https://doc.rust-lang.org/reference/items/enumerations.html
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.51.0/src/lints/enum_unit_variant_changed_kind.ron

Failed in:
  variant WalkStopReason::StoppedAtNonDirectory in /home/runner/work/litebox/litebox/litebox_broker_core/src/fs/backend.rs:417

--- failure enum_variant_added: enum variant added on exhaustive enum ---

Description:
A publicly-visible enum without #[non_exhaustive] has a new variant.
        ref: https://doc.rust-lang.org/cargo/reference/semver.html#enum-variant-new
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.51.0/src/lints/enum_variant_added.ron

Failed in:
  variant InitialNode:Symlink in /home/runner/work/litebox/litebox/litebox_broker_core/src/fs/in_mem.rs:265
  variant OpenError:NoSuchDevice in /home/runner/work/litebox/litebox/litebox_broker_core/src/fs/errors.rs:32
  variant ChownError:IsSymlink in /home/runner/work/litebox/litebox/litebox_broker_core/src/fs/errors.rs:148
  variant ChmodError:IsSymlink in /home/runner/work/litebox/litebox/litebox_broker_core/src/fs/errors.rs:130
  variant PathError:TooManySymlinks in /home/runner/work/litebox/litebox/litebox_broker_core/src/fs/errors.rs:243

--- failure function_parameter_count_changed: pub fn parameter count changed ---

Description:
A publicly-visible function now takes a different number of parameters.
        ref: https://doc.rust-lang.org/cargo/reference/semver.html#fn-change-arity
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.51.0/src/lints/function_parameter_count_changed.ron

Failed in:
  litebox_broker_core::fs::path_status now takes 4 parameters instead of 3, in /home/runner/work/litebox/litebox/litebox_broker_core/src/fs/service.rs:673

--- failure inherent_method_const_removed: pub method is no longer const ---

Description:
A publicly-visible method or associated fn is no longer `const` and can no longer be used in a `const` context.
        ref: https://doc.rust-lang.org/reference/const_eval.html
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.51.0/src/lints/inherent_method_const_removed.ron

Failed in:
  TestStdioProvider::with_terminal in /home/runner/work/litebox/litebox/litebox_broker_core/src/test_support.rs:161

--- failure inherent_method_missing: pub method removed or renamed ---

Description:
A publicly-visible method or associated fn is no longer available under its prior name. It may have been renamed or removed entirely.
        ref: https://doc.rust-lang.org/cargo/reference/semver.html#item-remove
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.51.0/src/lints/inherent_method_missing.ron

Failed in:
  Resolver::is_terminal, previously in file /home/runner/work/litebox/litebox/target/semver-checks/git-sanghle_ulitebox_smp_2_cpus_online/949ece8ce3936ec449933ed551ebbbee1351a1d4/litebox_broker_core/src/fs/resolver.rs:946
  TestStdioProvider::with_uncontrolled_terminal, previously in file /home/runner/work/litebox/litebox/target/semver-checks/git-sanghle_ulitebox_smp_2_cpus_online/949ece8ce3936ec449933ed551ebbbee1351a1d4/litebox_broker_core/src/test_support.rs:177
  TestStdioProvider::terminal_queries, previously in file /home/runner/work/litebox/litebox/target/semver-checks/git-sanghle_ulitebox_smp_2_cpus_online/949ece8ce3936ec449933ed551ebbbee1351a1d4/litebox_broker_core/src/test_support.rs:219

--- failure method_parameter_count_changed: pub method parameter count changed ---

Description:
A publicly-visible method now takes a different number of parameters, not counting the receiver (self) parameter.
        ref: https://doc.rust-lang.org/cargo/reference/semver.html#fn-change-arity
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.51.0/src/lints/method_parameter_count_changed.ron

Failed in:
  litebox_broker_core::fs::resolver::Resolver::file_status takes 2 parameters in /home/runner/work/litebox/litebox/target/semver-checks/git-sanghle_ulitebox_smp_2_cpus_online/949ece8ce3936ec449933ed551ebbbee1351a1d4/litebox_broker_core/src/fs/resolver.rs:918, but now takes 3 parameters in /home/runner/work/litebox/litebox/litebox_broker_core/src/fs/resolver.rs:1156

--- failure trait_method_added: pub trait method added ---

Description:
A non-sealed public trait added a new method without a default implementation, which breaks downstream implementations of the trait
        ref: https://doc.rust-lang.org/cargo/reference/semver.html#trait-new-item-no-default
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.51.0/src/lints/trait_method_added.ron

Failed in:
  trait method litebox_broker_core::fs::backend::Backend::read_link_at in file /home/runner/work/litebox/litebox/litebox_broker_core/src/fs/backend.rs:71

--- failure trait_method_missing: pub trait method removed or renamed ---

Description:
A trait method is no longer callable, and may have been renamed or removed entirely.
        ref: https://doc.rust-lang.org/cargo/reference/semver.html#trait-item-signature
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.51.0/src/lints/trait_method_missing.ron

Failed in:
  method is_terminal of trait Backend, previously in file /home/runner/work/litebox/litebox/target/semver-checks/git-sanghle_ulitebox_smp_2_cpus_online/949ece8ce3936ec449933ed551ebbbee1351a1d4/litebox_broker_core/src/fs/backend.rs:163

--- failure trait_method_parameter_count_changed: pub trait method parameter count changed ---

Description:
A trait method now takes a different number of parameters.
        ref: https://doc.rust-lang.org/cargo/reference/semver.html#trait-item-signature
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.51.0/src/lints/trait_method_parameter_count_changed.ron

Failed in:
  StdioProvider::terminal now takes 0 instead of 1 parameters, in file /home/runner/work/litebox/litebox/litebox_broker_core/src/stdio.rs:74

--- failure method_parameter_count_changed: pub method parameter count changed ---

Description:
A publicly-visible method now takes a different number of parameters, not counting the receiver (self) parameter.
        ref: https://doc.rust-lang.org/cargo/reference/semver.html#fn-change-arity
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.51.0/src/lints/method_parameter_count_changed.ron

Failed in:
  litebox_broker_local::BrokerLocal::path_file_status takes 3 parameters in /home/runner/work/litebox/litebox/target/semver-checks/git-sanghle_ulitebox_smp_2_cpus_online/949ece8ce3936ec449933ed551ebbbee1351a1d4/litebox_broker_local/src/fs.rs:231, but now takes 4 parameters in /home/runner/work/litebox/litebox/litebox_broker_local/src/fs.rs:233

--- failure function_missing: pub fn removed or renamed ---

Description:
A publicly-visible function cannot be imported by its prior path. A `pub use` may have been removed, or the function itself may have been renamed or removed entirely.
        ref: https://doc.rust-lang.org/cargo/reference/semver.html#item-remove
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.51.0/src/lints/function_missing.ron

Failed in:
  function litebox_broker_platform_linux_userland::terminal::open_stdio_terminals, previously in file /home/runner/work/litebox/litebox/target/semver-checks/git-sanghle_ulitebox_smp_2_cpus_online/949ece8ce3936ec449933ed551ebbbee1351a1d4/litebox_broker_platform_linux_userland/src/terminal.rs:35

--- failure inherent_method_missing: pub method removed or renamed ---

Description:
A publicly-visible method or associated fn is no longer available under its prior name. It may have been renamed or removed entirely.
        ref: https://doc.rust-lang.org/cargo/reference/semver.html#item-remove
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.51.0/src/lints/inherent_method_missing.ron

Failed in:
  LinuxTerminal::open, previously in file /home/runner/work/litebox/litebox/target/semver-checks/git-sanghle_ulitebox_smp_2_cpus_online/949ece8ce3936ec449933ed551ebbbee1351a1d4/litebox_broker_platform_linux_userland/src/terminal.rs:111

--- failure constructible_struct_adds_field: struct exhaustively constructible through public API adds field ---

Description:
A pub struct that could be exhaustively constructed with a literal using only public API has a new pub field, breaking existing exhaustive literals.
        ref: https://doc.rust-lang.org/reference/expressions/struct-expr.html
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.51.0/src/lints/constructible_struct_adds_field.ron

Failed in:
  field PathFileStatusRequest.follow_symlinks in /home/runner/work/litebox/litebox/litebox_broker_protocol/src/fs.rs:449

--- failure enum_variant_added: enum variant added on exhaustive enum ---

Description:
A publicly-visible enum without #[non_exhaustive] has a new variant.
        ref: https://doc.rust-lang.org/cargo/reference/semver.html#enum-variant-new
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.51.0/src/lints/enum_variant_added.ron

Failed in:
  variant FileResponse:ReadLink in /home/runner/work/litebox/litebox/litebox_broker_protocol/src/message.rs:790
  variant FileResponse:ResolvePath in /home/runner/work/litebox/litebox/litebox_broker_protocol/src/message.rs:792
  variant FileRequest:ReadLink in /home/runner/work/litebox/litebox/litebox_broker_protocol/src/message.rs:751
  variant FileRequest:ResolvePath in /home/runner/work/litebox/litebox/litebox_broker_protocol/src/message.rs:753

--- failure inherent_method_missing: pub method removed or renamed ---

Description:
A publicly-visible method or associated fn is no longer available under its prior name. It may have been renamed or removed entirely.
        ref: https://doc.rust-lang.org/cargo/reference/semver.html#item-remove
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.51.0/src/lints/inherent_method_missing.ron

Failed in:
  UserlandStdioProvider::open_terminals, previously in file /home/runner/work/litebox/litebox/target/semver-checks/git-sanghle_ulitebox_smp_2_cpus_online/949ece8ce3936ec449933ed551ebbbee1351a1d4/litebox_broker_userland/src/stdio.rs:64
  UserlandStdioProvider::with_terminals, previously in file /home/runner/work/litebox/litebox/target/semver-checks/git-sanghle_ulitebox_smp_2_cpus_online/949ece8ce3936ec449933ed551ebbbee1351a1d4/litebox_broker_userland/src/stdio.rs:85
  UserlandStdioProvider::close_terminals, previously in file /home/runner/work/litebox/litebox/target/semver-checks/git-sanghle_ulitebox_smp_2_cpus_online/949ece8ce3936ec449933ed551ebbbee1351a1d4/litebox_broker_userland/src/stdio.rs:113

--- failure inherent_method_missing: pub method removed or renamed ---

Description:
A publicly-visible method or associated fn is no longer available under its prior name. It may have been renamed or removed entirely.
        ref: https://doc.rust-lang.org/cargo/reference/semver.html#item-remove
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.51.0/src/lints/inherent_method_missing.ron

Failed in:
  Association::take_woken, previously in file /home/runner/work/litebox/litebox/target/semver-checks/git-sanghle_ulitebox_smp_2_cpus_online/949ece8ce3936ec449933ed551ebbbee1351a1d4/litebox_broker_vm_kernel/src/lib.rs:823
  Association::halt, previously in file /home/runner/work/litebox/litebox/target/semver-checks/git-sanghle_ulitebox_smp_2_cpus_online/949ece8ce3936ec449933ed551ebbbee1351a1d4/litebox_broker_vm_kernel/src/lib.rs:828

--- failure enum_variant_added: enum variant added on exhaustive enum ---

Description:
A publicly-visible enum without #[non_exhaustive] has a new variant.
        ref: https://doc.rust-lang.org/cargo/reference/semver.html#enum-variant-new
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.51.0/src/lints/enum_variant_added.ron

Failed in:
  variant Errno:ELOOP in /home/runner/work/litebox/litebox/litebox_common_macos/src/errno.rs:66