name: windows-soak

# ConPTY orphan-leak soak on a GitHub-hosted Windows runner — the cheap
# alternative to a dedicated Windows VM. The freeze hypothesis (T-424) is that
# each WindowsPty.start() leaks its conhost/OpenConsole host because the child
# is not in a kill-on-close Job Object; across many runs those hosts pile up
# until the box starves. tools/windows-verify/soak-conpty.ps1 reproduces that
# WITHOUT crashing: it runs the ConPTY suite many times IN ONE job and counts
# the hosts that survive each dart.exe exit. A throwaway runner is fine — we
# watch the accumulation (the leading indicator), not the reboot. The repeated
# runs happen inside this single job, so the leak can build up here even though
# the runner is discarded afterwards (cf. the note in windows.yml, which only
# runs the suite once).
#
# Diagnostic, never a gate: it always exits 0 and just publishes the verdict +
# CSV. Runs on demand (workflow_dispatch) and when the soak kit itself changes.

on:
  workflow_dispatch:
    inputs:
      iterations:
        description: How many times to run the ConPTY suite (clean-path soak)
        default: "25"
      kill_iterations:
        description: Spawn+force-kill cycles (abrupt-death orphan probe)
        default: "15"
      ptys_per_iter:
        description: WindowsPty sessions spawned per kill cycle
        default: "2"
  push:
    branches: [windows-support]
    paths:
      - tools/windows-verify/**
      - .github/workflows/windows-soak.yml

jobs:
  conpty-soak:
    runs-on: windows-latest
    timeout-minutes: 30
    steps:
      - uses: actions/checkout@v4
      - uses: subosito/flutter-action@v2
        with:
          channel: stable
      - run: flutter --version
      - run: flutter pub get
      - name: ConPTY orphan-leak soak
        shell: pwsh
        run: |
          $iters = "${{ github.event.inputs.iterations }}"
          if (-not $iters) { $iters = "25" }
          tools/windows-verify/soak-conpty.ps1 -Iterations ([int]$iters) -OutDir "$env:GITHUB_WORKSPACE/soak-out"
      - name: Publish verdict to job summary
        if: always()
        shell: pwsh
        run: |
          $s = Get-ChildItem "$env:GITHUB_WORKSPACE/soak-out/*.summary.txt" -ErrorAction SilentlyContinue | Select-Object -First 1
          if ($s) { Get-Content $s.FullName | Add-Content $env:GITHUB_STEP_SUMMARY }
      - name: Upload soak CSV + summary
        if: always()
        uses: actions/upload-artifact@v4
        with:
          name: conpty-soak
          path: soak-out
          if-no-files-found: warn

  conpty-kill-probe:
    # Abrupt-death half: force-kill the parent dart.exe mid-life (no close(),
    # no Job Object) and count the ConPTY hosts that survive. This is the path
    # the freeze hypothesis (T-424) actually implicates — the clean-path soak
    # above never exercises it. Diagnostic only; always succeeds.
    runs-on: windows-latest
    timeout-minutes: 30
    steps:
      - uses: actions/checkout@v4
      - uses: subosito/flutter-action@v2
        with:
          channel: stable
      - run: flutter --version
      - run: flutter pub get
      - name: ConPTY abrupt-death orphan probe
        shell: pwsh
        # CLIDE_LOG_DIR makes the probe emit FFI breadcrumbs (T-436): when a
        # parent is force-killed mid-life, its reader/waiter isolates' last
        # crumb ("ReadFile enter" / "WaitForSingleObject enter") is fsynced to
        # clide-pty.crumbs.log and uploaded below — naming what the wedged
        # isolate was doing at the instant of death.
        env:
          CLIDE_LOG_DIR: ${{ github.workspace }}/kill-crumbs
        run: |
          $iters = "${{ github.event.inputs.kill_iterations }}"
          if (-not $iters) { $iters = "15" }
          $ptys = "${{ github.event.inputs.ptys_per_iter }}"
          if (-not $ptys) { $ptys = "2" }
          tools/windows-verify/soak-conpty-kill.ps1 -Iterations ([int]$iters) -PtysPerIter ([int]$ptys) -OutDir "$env:GITHUB_WORKSPACE/kill-out"
      - name: Publish verdict to job summary
        if: always()
        shell: pwsh
        run: |
          $s = Get-ChildItem "$env:GITHUB_WORKSPACE/kill-out/*.summary.txt" -ErrorAction SilentlyContinue | Select-Object -First 1
          if ($s) { Get-Content $s.FullName | Add-Content $env:GITHUB_STEP_SUMMARY }
      - name: Upload kill-probe CSV + summary
        if: always()
        uses: actions/upload-artifact@v4
        with:
          name: conpty-kill-probe
          path: kill-out
          if-no-files-found: warn
      - name: Upload FFI breadcrumbs (last act of each killed reader/waiter)
        if: always()
        uses: actions/upload-artifact@v4
        with:
          name: conpty-kill-crumbs
          path: ${{ github.workspace }}/kill-crumbs
          if-no-files-found: ignore