c5dbd3ca24
This improves the load time of most brew commands. For an example of
one of the simplest commands this speeds up:
Without Bootsnap:
```
$ hyperfine 'git checkout master; brew help' 'git checkout optimise_requires; brew help'
Benchmark 1: git checkout master; brew help
Time (mean ± σ): 525.0 ms ± 35.8 ms [User: 229.9 ms, System: 113.1 ms]
Range (min … max): 465.3 ms … 576.6 ms 10 runs
Benchmark 2: git checkout optimise_requires; brew help
Time (mean ± σ): 383.3 ms ± 25.1 ms [User: 133.0 ms, System: 72.1 ms]
Range (min … max): 353.0 ms … 443.6 ms 10 runs
Summary
git checkout optimise_requires; brew help ran
1.37 ± 0.13 times faster than git checkout master; brew help
```
With Bootsnap:
```
$ hyperfine 'git checkout master; brew help' 'git checkout optimise_requires; brew help'
Benchmark 1: git checkout master; brew help
Time (mean ± σ): 386.0 ms ± 30.9 ms [User: 130.2 ms, System: 93.8 ms]
Range (min … max): 359.5 ms … 469.3 ms 10 runs
Benchmark 2: git checkout optimise_requires; brew help
Time (mean ± σ): 330.2 ms ± 32.4 ms [User: 93.4 ms, System: 73.0 ms]
Range (min … max): 302.9 ms … 413.9 ms 10 runs
Summary
git checkout optimise_requires; brew help ran
1.17 ± 0.15 times faster than git checkout master; brew help
```
80 lines
1.8 KiB
Ruby
80 lines
1.8 KiB
Ruby
# typed: true
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# frozen_string_literal: true
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require "macos_version"
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module Homebrew
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# Helper module for simulating different system configurations.
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class SimulateSystem
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class << self
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attr_reader :arch, :os
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sig {
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type_parameters(:U).params(
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os: Symbol,
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arch: Symbol,
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_block: T.proc.returns(T.type_parameter(:U)),
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).returns(T.type_parameter(:U))
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}
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def with(os: T.unsafe(nil), arch: T.unsafe(nil), &_block)
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raise ArgumentError, "At least one of `os` or `arch` must be specified." if !os && !arch
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old_os = self.os
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old_arch = self.arch
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begin
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self.os = os if os && os != current_os
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self.arch = arch if arch && arch != current_arch
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yield
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ensure
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@os = old_os
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@arch = old_arch
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end
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end
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sig { params(new_os: Symbol).void }
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def os=(new_os)
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os_options = [:macos, :linux, *MacOSVersion::SYMBOLS.keys]
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raise "Unknown OS: #{new_os}" unless os_options.include?(new_os)
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@os = new_os
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end
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sig { params(new_arch: Symbol).void }
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def arch=(new_arch)
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raise "New arch must be :arm or :intel" unless OnSystem::ARCH_OPTIONS.include?(new_arch)
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@arch = new_arch
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end
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sig { void }
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def clear
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@os = @arch = nil
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end
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sig { returns(T::Boolean) }
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def simulating_or_running_on_macos?
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[:macos, *MacOSVersion::SYMBOLS.keys].include?(os)
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end
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sig { returns(T::Boolean) }
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def simulating_or_running_on_linux?
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os == :linux
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end
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sig { returns(Symbol) }
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def current_arch
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@arch || Hardware::CPU.type
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end
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sig { returns(Symbol) }
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def current_os
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os || :generic
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end
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end
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end
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end
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require "extend/os/simulate_system"
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