fix(minor): Make setup/teardown hooks usable in Swift 6 mode (#312)

Fixes #311

---------

Co-authored-by: ordo-ci <[email protected]>

Author: hassila

.github/workflows/swift-linux-previous.yml

@@ -13,7 +13,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-latest]
+        os: [ubuntu-22.04]
         swift: ["5.9", "5.10"]
 
 

.github/workflows/swift-macos-previous.yml

@@ -14,14 +14,19 @@ jobs:
       fail-fast: false
       matrix:
         os: [macos-14]
-        swift: ["5.9", "5.10"]
+        xcode: ["15.2", "15.3"]
+        #swift: ["5.9", "5.10"]
 
     runs-on: ${{ matrix.os }}
 
     steps:
     - uses: swift-actions/setup-swift@v2
+      if: ${{ false }}
       with:
         swift-version: ${{ matrix.swift }}
+    - uses: maxim-lobanov/setup-xcode@v1
+      with:
+        xcode-version: ${{ matrix.xcode }}
 
     - name: Homebrew Mac
       if: ${{ runner.os == 'Macos' }}
@@ -49,3 +54,6 @@ jobs:
         if [ -d Tests ]; then
           swift test -c release --parallel
         fi
+    - name: Setup tmate session
+      if: failure()
+      uses: mxschmitt/action-tmate@v3

Benchmarks/Benchmarks/Basic/Basic+SetupTeardown.swift

@@ -18,9 +18,9 @@ func sharedTeardown() {
 }
 
 func testSetUpTearDown() {
-    //    Benchmark.setup = { print("Global setup hook")}
+//    Benchmark.setup = { print("Global setup hook")}
 //        Benchmark.setup = { 123 }
-    //    Benchmark.teardown = { print("Global teardown hook") }
+//    Benchmark.teardown = { print("Global teardown hook") }
 
     Benchmark("SetupTeardown",
               configuration: .init(setup: sharedSetup, teardown: sharedTeardown)) { _ in

Benchmarks/Benchmarks/Basic/BenchmarkRunner+Basic.swift

@@ -21,22 +21,10 @@ import Glibc
 // quiet swiftlint for now
 extension BenchmarkRunner {}
 
-let benchmarks = {
+let benchmarks: @Sendable () -> Void = {
     var thresholdTolerances: [BenchmarkMetric: BenchmarkThresholds]
 
-    if Benchmark.checkAbsoluteThresholds {
-        let absolute: BenchmarkThresholds.AbsoluteThresholds = [.p0: .microseconds(1),
-                                                                .p25: .microseconds(1),
-                                                                .p50: .microseconds(2_500),
-                                                                .p75: .microseconds(1),
-                                                                .p90: .microseconds(2),
-                                                                .p99: .milliseconds(3),
-                                                                .p100: .milliseconds(1)]
-
-        thresholdTolerances = [.wallClock: .init(absolute: absolute)]
-    } else {
-        thresholdTolerances = [.wallClock: .relaxed]
-    }
+    thresholdTolerances = [.wallClock: .relaxed]
 
     Benchmark.defaultConfiguration = .init(warmupIterations: 0,
                                            maxDuration: .seconds(1),

Benchmarks/Benchmarks/DateTime/DateTime.swift

@@ -10,7 +10,7 @@
 import Benchmark
 import DateTime
 
-let benchmarks = {
+let benchmarks: @Sendable () -> Void = {
     Benchmark.defaultConfiguration = .init(metrics: [.throughput, .wallClock, .instructions] + .arc,
                                            warmupIterations: 10,
                                            scalingFactor: .kilo,

Benchmarks/Benchmarks/Histogram/Histogram.swift

@@ -10,7 +10,7 @@
 import Benchmark
 import Histogram
 
-let benchmarks = {
+let benchmarks: @Sendable () -> Void = {
     let metrics: [BenchmarkMetric] = [
         .wallClock,
         .throughput,

Benchmarks/Benchmarks/P90AbsoluteThresholds/P90AbsoluteThresholds.swift

@@ -18,7 +18,7 @@ import Foundation
     #error("Unsupported Platform")
 #endif
 
-let benchmarks = {
+let benchmarks: @Sendable () -> Void = {
     var thresholdTolerances: [BenchmarkMetric: BenchmarkThresholds]
     let relative: BenchmarkThresholds.RelativeThresholds = [.p25: 25.0, .p50: 50.0, .p75: 75.0, .p90: 100.0, .p99: 101.0, .p100: 201.0]
     let absolute: BenchmarkThresholds.AbsoluteThresholds = [.p75: 999, .p90: 1_000, .p99: 1_001, .p100: 2_001]

Benchmarks/Package.swift

@@ -1,4 +1,4 @@
-// swift-tools-version: 5.9
+// swift-tools-version: 6.0
 
 import class Foundation.ProcessInfo
 import PackageDescription
@@ -8,7 +8,7 @@ let disableJemalloc = ProcessInfo.processInfo.environment["BENCHMARK_DISABLE_JEM
 
 let package = Package(
     name: "Benchmarks",
-    platforms: [.macOS(.v14), .iOS(.v17)],
+    platforms: [.macOS(.v15), .iOS(.v17)],
     dependencies: [
         .package(path: "../"),
         .package(url: "https://github.com/ordo-one/package-datetime", .upToNextMajor(from: "1.0.1")),

Plugins/BenchmarkCommandPlugin/Command+Helpers.swift

@@ -51,9 +51,7 @@ public enum Grouping: String, CaseIterable {
     case benchmark
 }
 
-#if swift(>=5.8)
 @_documentation(visibility: internal)
-#endif
 public enum TimeUnits: String, CaseIterable {
     case nanoseconds
     case microseconds

README.md

@@ -92,7 +92,7 @@ There are [documentation available](https://swiftpackageindex.com/ordo-one/packa
 ```swift
 import Benchmark
 
-let benchmarks = {
+let benchmarks : @Sendable () -> Void = {
     Benchmark("Minimal benchmark") { benchmark in
       // measure something here
     }
@@ -159,6 +159,14 @@ Using [jmh.morethan.io](https://jmh.morethan.io)
 
 <img width="1482" alt="image" src="https://user-images.githubusercontent.com/8501048/225313559-33014755-797f-4ddf-b536-24c1a618f271.png">
 
+## Swift 6 support
+The package supports Swift 6.0 benchmark targets as well as Swift 5.10 targets (for Swift 5.9 support, need to use version 1.28.0 exactly).
+
+For Swift 6 targets, use the following signature for the benchmarks closure:
+```swift
+let benchmarks : @Sendable () -> Void = {
+```
+
 ## Output
 
 The default text output from Benchmark is oriented around [the five-number summary](https://en.wikipedia.org/wiki/Five-number_summary) percentiles, plus the last decile (`p90`) and the last percentile (`p99`) - it's thus a variation of a [seven-figure summary](https://en.wikipedia.org/wiki/Seven-number_summary) with the focus on the 'bad' end of results (as those are what we typically care about addressing).
@@ -168,16 +176,6 @@ This multi-modal nature of the latency measurements leads to the common statisti
 
 Please see the [documentation for further details on percentiles](https://swiftpackageindex.com/ordo-one/package-benchmark/documentation/benchmark/aboutpercentiles).
 
-## Swift 6 support
-The package will be updated to be fully Swift 6 when 5.x support is dropped (planned to be when Swift 6.2 is released).
-
-Workaround needed for Swift 6 targets, use the following signature for the benchmarks closure:
-```swift
-let benchmarks : @Sendable () -> Void = {
-```
-
-See https://github.com/ordo-one/package-benchmark/issues/258 for more details.
-
 ## API and file format stability
 The API will be deemed stable as of `1.0.0` and follows semantical versioning for future releases.