ci: auto-cancel previous workflows when a new commit is pushed (#10962)

.github/workflows/cancel.yml

@@ -0,0 +1,15 @@
+name: Cancel previous workflows
+
+on:
+  workflow_run:
+    workflows: ["Code CI", "Sanitized CI"] # the other workflows finish quickly - no need to skip them for now
+    types:
+      - requested
+
+jobs:
+  cancel-previous-workflows:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: styfle/cancel-workflow-action@0.9.0
+      with:
+        workflow_id: ${{ github.event.workflow.id }}

.github/workflows/ci.yml

@@ -9,7 +9,14 @@ on:
       - "**.md"
 
 jobs:
+  no-scheduling:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Dont schedule all jobs
+        run: sleep 10
+
   code-formatting-perf-regressions:
+    needs: no-scheduling
     runs-on: ubuntu-20.04
     timeout-minutes: 15
     env:
@@ -40,6 +47,7 @@ jobs:
         run: cmd/tools/repeat --max_time 1201 --series 3 --count 20 --nmins 2 --nmaxs 5 --warmup 3 --fail_percent 10 -t 'cd {T} ; ./v -show-timings -o v.c cmd/v' . ./vmaster
 
   ubuntu-tcc:
+    needs: no-scheduling
     runs-on: ubuntu-20.04
     timeout-minutes: 60
     env:
@@ -106,6 +114,7 @@ jobs:
         run: cd cmd/tools/fast && ../../../v fast.v && ./fast
 
   ubuntu-tcc-boehm-gc:
+    needs: no-scheduling
     runs-on: ubuntu-20.04
     timeout-minutes: 60
     env:
@@ -160,6 +169,7 @@ jobs:
           [ "$(stat -c %s leaks.txt)" = "0" ]
 
   misc-tooling:
+    needs: no-scheduling
     runs-on: ubuntu-20.04
     timeout-minutes: 60
     env:
@@ -230,6 +240,7 @@ jobs:
 
 
   alpine-docker-musl-gcc:
+    needs: no-scheduling
     name: alpine-musl
     runs-on: ubuntu-20.04
     timeout-minutes: 60
@@ -259,6 +270,7 @@ jobs:
           ./v -silent test-self
 
   macos:
+    needs: no-scheduling
     runs-on: macOS-latest
     timeout-minutes: 60
     env:
@@ -347,6 +359,7 @@ jobs:
           ../v run examples/build_examples.vsh
 
   ubuntu:
+    needs: no-scheduling
     runs-on: ubuntu-20.04
     timeout-minutes: 60
     steps:
@@ -442,6 +455,7 @@ jobs:
   #        github-token: ${{ secrets.GITHUB_TOKEN }}
 
   ubuntu-clang:
+    needs: no-scheduling
     runs-on: ubuntu-20.04
     timeout-minutes: 60
     env:
@@ -537,6 +551,7 @@ jobs:
 
   # Ubuntu docker pre-built container
   ubuntu-musl:
+    needs: no-scheduling
     name: ubuntu-musl
     runs-on: ubuntu-20.04
     timeout-minutes: 60
@@ -589,6 +604,7 @@ jobs:
   #       run: ./v -silent test-self
 
   windows-gcc:
+    needs: no-scheduling
     runs-on: windows-2019
     timeout-minutes: 60
     env:
@@ -631,6 +647,7 @@ jobs:
         run: .\v.exe -o v2.exe cmd/v && .\v2.exe -o v3.exe cmd/v
 
   windows-msvc:
+    needs: no-scheduling
     runs-on: windows-2019
     timeout-minutes: 60
     env:
@@ -674,6 +691,7 @@ jobs:
         run: .\v.exe -o v2.exe cmd/v && .\v2.exe -o v3.exe cmd/v
 
   windows-tcc:
+    needs: no-scheduling
     runs-on: windows-2019
     timeout-minutes: 60
     env:
@@ -761,6 +779,7 @@ jobs:
         run: .\v.exe -o v2.exe cmd/v && .\v2.exe -o v3.exe cmd/v
 
   parser-silent:
+    needs: no-scheduling
     name: Parser silent mode
     runs-on: ubuntu-20.04
     timeout-minutes: 60
@@ -800,6 +819,7 @@ jobs:
           ./v test-parser -S examples/2048/2048_fuzz.v
 
   v-apps-compile:
+    needs: no-scheduling
     runs-on: ubuntu-20.04
     timeout-minutes: 60
     steps:

.github/workflows/ci_sanitized.yml

@@ -9,7 +9,14 @@ on:
       - "**.md"
 
 jobs:
+  no-scheduling:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Dont schedule all jobs
+        run: sleep 10
+
   tests-sanitize-undefined-clang:
+    needs: no-scheduling
     runs-on: ubuntu-20.04
     timeout-minutes: 120
     env:
@@ -35,6 +42,7 @@ jobs:
         run: ./v2 build-examples
 
   tests-sanitize-undefined-gcc:
+    needs: no-scheduling
     runs-on: ubuntu-20.04
     timeout-minutes: 120
     env:
@@ -59,6 +67,7 @@ jobs:
         run: ./v2 build-examples
 
   tests-sanitize-address-clang:
+    needs: no-scheduling
     runs-on: ubuntu-20.04
     timeout-minutes: 120
     env:
@@ -88,6 +97,7 @@ jobs:
         run: ASAN_OPTIONS=detect_leaks=0 ./v build-examples
 
   tests-sanitize-address-msvc:
+    needs: no-scheduling
     runs-on: windows-2019
     timeout-minutes: 120
     env:
@@ -114,6 +124,7 @@ jobs:
           .\v.exe -cflags -fsanitize=address test-self
 
   tests-sanitize-address-gcc:
+    needs: no-scheduling
     runs-on: ubuntu-20.04
     timeout-minutes: 120
     env:
@@ -143,6 +154,7 @@ jobs:
         run: ASAN_OPTIONS=detect_leaks=0 ./v build-examples
 
   tests-sanitize-memory-clang:
+    needs: no-scheduling
     runs-on: ubuntu-20.04
     timeout-minutes: 120
     env: