From 571b473cc17906b5400adae88313d6b58e4fb0c0 Mon Sep 17 00:00:00 2001
From: Dalton-V <dalton216@gmail.com>
Date: Thu, 10 Sep 2026 21:13:25 -0500
Subject: [PATCH] Use concurrency in CI

---
 .github/workflows/cpp-ci-serial-programs-mac-intel.yml    | 8 ++++++++
 .github/workflows/cpp-ci-serial-programs-mac.yml          | 8 ++++++++
 .github/workflows/cpp-ci-serial-programs-ubuntu-clang.yml | 8 ++++++++
 .../workflows/cpp-ci-serial-programs-ubuntu-default.yml   | 8 ++++++++
 .../workflows/cpp-ci-serial-programs-windows-clang.yml    | 8 ++++++++
 .../workflows/cpp-ci-serial-programs-windows-default.yml  | 8 ++++++++
 6 files changed, 48 insertions(+)

diff --git a/.github/workflows/cpp-ci-serial-programs-mac-intel.yml b/.github/workflows/cpp-ci-serial-programs-mac-intel.yml
index eba6cf90cd..19eff37f08 100644
--- a/.github/workflows/cpp-ci-serial-programs-mac-intel.yml
+++ b/.github/workflows/cpp-ci-serial-programs-mac-intel.yml
@@ -6,6 +6,14 @@ on:
   pull_request:
     types: [opened, synchronize, reopened, ready_for_review]
 
+concurrency:
+  group: >-
+    ${{ github.workflow }}-
+    ${{ github.event.pull_request.stack.number || 
+        github.event.pull_request.number || 
+        github.run_id }}
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+
 jobs:
   build:
     if: github.event_name != 'pull_request' || github.event.pull_request.draft == false
diff --git a/.github/workflows/cpp-ci-serial-programs-mac.yml b/.github/workflows/cpp-ci-serial-programs-mac.yml
index e97805b76e..5201d80e72 100644
--- a/.github/workflows/cpp-ci-serial-programs-mac.yml
+++ b/.github/workflows/cpp-ci-serial-programs-mac.yml
@@ -6,6 +6,14 @@ on:
   pull_request:
     types: [opened, synchronize, reopened, ready_for_review]
 
+concurrency:
+  group: >-
+    ${{ github.workflow }}-
+    ${{ github.event.pull_request.stack.number || 
+        github.event.pull_request.number || 
+        github.run_id }}
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+
 jobs:
   build:
     if: github.event_name != 'pull_request' || github.event.pull_request.draft == false
diff --git a/.github/workflows/cpp-ci-serial-programs-ubuntu-clang.yml b/.github/workflows/cpp-ci-serial-programs-ubuntu-clang.yml
index b05cd243cb..647b30ffb1 100644
--- a/.github/workflows/cpp-ci-serial-programs-ubuntu-clang.yml
+++ b/.github/workflows/cpp-ci-serial-programs-ubuntu-clang.yml
@@ -6,6 +6,14 @@ on:
   pull_request:
     types: [opened, synchronize, reopened, ready_for_review]
 
+concurrency:
+  group: >-
+    ${{ github.workflow }}-
+    ${{ github.event.pull_request.stack.number || 
+        github.event.pull_request.number || 
+        github.run_id }}
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+
 jobs:
   build:
     if: github.event_name != 'pull_request' || github.event.pull_request.draft == false
diff --git a/.github/workflows/cpp-ci-serial-programs-ubuntu-default.yml b/.github/workflows/cpp-ci-serial-programs-ubuntu-default.yml
index d9135a79c6..67f893da52 100644
--- a/.github/workflows/cpp-ci-serial-programs-ubuntu-default.yml
+++ b/.github/workflows/cpp-ci-serial-programs-ubuntu-default.yml
@@ -6,6 +6,14 @@ on:
   pull_request:
     types: [opened, synchronize, reopened, ready_for_review]
 
+concurrency:
+  group: >-
+    ${{ github.workflow }}-
+    ${{ github.event.pull_request.stack.number || 
+        github.event.pull_request.number || 
+        github.run_id }}
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+
 jobs:
   build:
     if: github.event_name != 'pull_request' || github.event.pull_request.draft == false
diff --git a/.github/workflows/cpp-ci-serial-programs-windows-clang.yml b/.github/workflows/cpp-ci-serial-programs-windows-clang.yml
index beffaae695..0fe396f0d3 100644
--- a/.github/workflows/cpp-ci-serial-programs-windows-clang.yml
+++ b/.github/workflows/cpp-ci-serial-programs-windows-clang.yml
@@ -6,6 +6,14 @@ on:
   pull_request:
     types: [opened, synchronize, reopened, ready_for_review]
 
+concurrency:
+  group: >-
+    ${{ github.workflow }}-
+    ${{ github.event.pull_request.stack.number || 
+        github.event.pull_request.number || 
+        github.run_id }}
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+
 jobs:
   build:
     if: github.event_name != 'pull_request' || github.event.pull_request.draft == false
diff --git a/.github/workflows/cpp-ci-serial-programs-windows-default.yml b/.github/workflows/cpp-ci-serial-programs-windows-default.yml
index 6ab2489835..378f7954f1 100644
--- a/.github/workflows/cpp-ci-serial-programs-windows-default.yml
+++ b/.github/workflows/cpp-ci-serial-programs-windows-default.yml
@@ -6,6 +6,14 @@ on:
   pull_request:
     types: [opened, synchronize, reopened, ready_for_review]
 
+concurrency:
+  group: >-
+    ${{ github.workflow }}-
+    ${{ github.event.pull_request.stack.number || 
+        github.event.pull_request.number || 
+        github.run_id }}
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+
 jobs:
   build:
     if: github.event_name != 'pull_request' || github.event.pull_request.draft == false