Merge remote-tracking branch 'origin/new-io-perf-glyph-cache'

Author: migueldeicaza

.github/workflows/xcode.yml

@@ -7,7 +7,7 @@ on:
     branches: [ main ]
 
 env:
-  DEVELOPER_DIR: /Applications/Xcode_16.4.app/Contents/Developer
+  DEVELOPER_DIR: /Applications/Xcode_26.0.app/Contents/Developer
 
 jobs:
   build:
@@ -37,6 +37,9 @@ jobs:
     - name: Swift Package Build
       run: swift build -v
 
+    - name: Check generated Unicode widths
+      run: python3 scripts/regen_unicode_width_data.py --check
+
     - name: Run tests
       env:
         SWIFT_TEST_DISABLE_PARALLELIZATION: "1"
@@ -49,3 +52,71 @@ jobs:
         swift test --enable-code-coverage
         BINDIR=$(swift build --show-bin-path)
         xcrun llvm-cov report "$BINDIR/SwiftTermPackageTests.xctest/Contents/MacOS/SwiftTermPackageTests" --instr-profile=.build/debug/codecov/default.profdata -use-color
+
+  thread-sanitizer:
+
+    runs-on: macos-15
+
+    steps:
+    - uses: actions/checkout@v4
+
+    - name: Stage A Thread Sanitizer Tests
+      env:
+        SWIFT_TEST_DISABLE_PARALLELIZATION: "1"
+      run: swift test --sanitize=thread --filter "TerminalLocking|SynchronizedOutput|TerminalIOPipeline"
+
+  swiftpm-strict-concurrency:
+
+    runs-on: macos-15
+
+    steps:
+    - uses: actions/checkout@v4
+
+    - name: Build SwiftTerm with complete concurrency checking
+      run: >-
+        swift build --target SwiftTerm
+        -Xswiftc -strict-concurrency=complete
+
+  swift6-tools:
+
+    runs-on: macos-15
+
+    steps:
+    - uses: actions/checkout@v4
+
+    - name: Build SwiftTerm benchmarks
+      run: swift build --package-path Tools/SwiftTermBenchmarks
+
+    - name: Build RenderBench
+      run: swift build --package-path Tools/RenderBench
+
+    - name: Build and test BidiHarness
+      run: >-
+        xcodebuild
+        -project Tools/BidiHarness/BidiHarness.xcodeproj
+        -scheme BidiHarness
+        -destination 'platform=macOS'
+        test
+        CODE_SIGNING_ALLOWED=NO
+
+  linux-headless:
+
+    runs-on: ubuntu-latest
+    container: swift:6.2-jammy
+
+    steps:
+    - uses: actions/checkout@v4
+
+    - name: Build SwiftTerm
+      run: swift build --target SwiftTerm
+
+    - name: Build SwiftTerm with complete concurrency checking
+      run: >-
+        swift build --target SwiftTerm
+        -Xswiftc -strict-concurrency=complete
+
+    - name: Run headless tests
+      env:
+        SWIFT_TEST_DISABLE_PARALLELIZATION: "1"
+      run: >-
+        swift test

Benchmarks/SwiftTermBenchmarks/SwiftTermBenchmarks.swift

@@ -0,0 +1,41 @@
+import Dispatch
+import Foundation
+
+@main
+struct UnicodeColumnWidthBenchmark {
+    private static let corpus = """
+        ASCII and Latin: The quick brown fox; café; naïve. \
+        Combining: e\u{0301} a\u{20D1}. \
+        CJK: 日本語 漢字. \
+        Hangul: 한글 \u{1100}\u{1161}. \
+        Emoji: 😀👍🏽. \
+        Regional indicators: 🇺🇸. \
+        Supplementary narrow: \u{10000}\u{10400}\u{1D400}.
+        """
+
+    static func main ()
+    {
+        // Read through the environment so that the compiler cannot replace the
+        // fixed corpus and width calls with constants.
+        let input = ProcessInfo.processInfo.environment ["SWIFTTERM_WIDTH_CORPUS"] ?? corpus
+        let scalars = Array (input.unicodeScalars)
+        let iterations = Int (ProcessInfo.processInfo.environment ["SWIFTTERM_WIDTH_ITERATIONS"] ?? "") ?? 200_000
+        var samples: [Double] = []
+        var checksum = 0
+
+        for _ in 0..<5 {
+            let start = DispatchTime.now ().uptimeNanoseconds
+            for _ in 0..<iterations {
+                for scalar in scalars {
+                    checksum &+= UnicodeUtil.columnWidth (rune: scalar)
+                }
+            }
+            let nanoseconds = DispatchTime.now ().uptimeNanoseconds - start
+            samples.append (Double (nanoseconds) / 1_000_000)
+        }
+
+        samples.sort ()
+        print ("scalars=\(scalars.count) calls-per-sample=\(scalars.count * iterations) " +
+               "median-ms=\(samples [2]) samples-ms=\(samples) checksum=\(checksum)")
+    }
+}