add AsyncProcess, Concurreny for Foundation.Process #2
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MaxDesiatov
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Jul 19, 2023
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MaxDesiatov
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This is great, thank you so much!
euanh
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to euanh/swift-sdk-generator
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Nov 28, 2024
…TargetSwift
copyTargetSwiftFromDocker() already copies all the same files as copyTargetSwift,
and puts them in the destination directory. Calling copyTargetSwift() at the
end just results in several pointless rsync calls which syncing directories to
themselves.
Stopping in copyTargetSwift() shows that the source and destination arguments
point to the same place:
Process 77272 stopped
* thread swiftlang#2, queue = 'com.apple.root.default-qos.cooperative', stop reason = breakpoint 1.1
frame #0: ... at SwiftSDKGenerator+Copy.swift:105:8
102 }
103 }
104
-> 105 func copyTargetSwift(from distributionPath: FilePath, sdkDirPath: FilePath) async throws {
106 logGenerationStep("Copying Swift core libraries for the target triple into Swift SDK bundle...")
107
108 for (pathWithinPackage, pathWithinSwiftSDK) in [
Target 0: (swift-sdk-generator) stopped.
(lldb) print distributionPath.string
(String) ".../ubuntu-jammy.sdk/usr"
(lldb) print sdkDirPath.string
(String) ".../ubuntu-jammy.sdk"
The first rsync command line is then:
rsync -a .../ubuntu-jammy.sdk/usr/lib/swift .../ubuntu-jammy.sdk/usr/lib
Removing the call to copyTargetSwift() does not save much time because rsync
does not do much work, however disentangling the Ubuntu-based SDK build from
the container-based build makes it easier to refactor both of them independently.
Diffing SDKs built before and after this change shows them to be identical.
The EndToEndTests (which currently can't be run by CI) continue to pass locally.
euanh
added a commit
that referenced
this pull request
Nov 28, 2024
…TargetSwift (#160) copyTargetSwiftFromDocker() already copies all the same files as copyTargetSwift, and puts them in the destination directory. Calling copyTargetSwift() at the end just results in several pointless rsync calls which sync the directories to themselves. Stopping in copyTargetSwift() shows that the source and destination arguments point to the same place: Process 77272 stopped * thread #2, queue = 'com.apple.root.default-qos.cooperative', stop reason = breakpoint 1.1 frame #0: ... at SwiftSDKGenerator+Copy.swift:105:8 102 } 103 } 104 -> 105 func copyTargetSwift(from distributionPath: FilePath, sdkDirPath: FilePath) async throws { 106 logGenerationStep("Copying Swift core libraries for the target triple into Swift SDK bundle...") 107 108 for (pathWithinPackage, pathWithinSwiftSDK) in [ Target 0: (swift-sdk-generator) stopped. (lldb) print distributionPath.string (String) ".../ubuntu-jammy.sdk/usr" (lldb) print sdkDirPath.string (String) ".../ubuntu-jammy.sdk" The first rsync command line is then: rsync -a .../ubuntu-jammy.sdk/usr/lib/swift .../ubuntu-jammy.sdk/usr/lib Removing the call to copyTargetSwift() does not save much time because rsync does not do much work, however disentangling the Ubuntu-based SDK build from the container-based build makes it easier to refactor both of them independently. Diffing SDKs built before and after this change shows them to be identical. The EndToEndTests (which currently can't be run by CI) continue to pass locally.
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AsyncProcess is an early stage module that aims to make Foundation.Process feel Swift Concurrency native.