safe coroutine spawning

.github/workflows/rust.yml

@@ -18,29 +18,74 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout sources
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
       - name: Install toolchain
         uses: actions-rs/toolchain@v1
         with:
           profile: minimal
-          toolchain: stable
+          toolchain: nightly
           override: true
           components: rustfmt, clippy
+      - name: Cache cargo registry
+        uses: actions/cache@v3
+        with:
+          path: |
+            ~/.cargo/registry
+            ~/.cargo/git
+            target
+          key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}
       - name: cargo fmt --check
         uses: actions-rs/cargo@v1
         with:
           command: fmt
           args: --all -- --check
-      - name: Run cargo clippy
+      - name: Run cargo clippy (strict)
         uses: actions-rs/cargo@v1
         with:
           command: clippy
-          args: -- -D warnings
-      - name: Run cargo clippy no default features
+          args: --all-targets --all-features -- -D warnings -D clippy::correctness -D clippy::suspicious -D clippy::complexity -D clippy::perf -D clippy::style
+      - name: Run cargo clippy no default features (strict)
         uses: actions-rs/cargo@v1
         with:
           command: clippy
-          args: --no-default-features -- -D warnings
+          args: --no-default-features --all-targets -- -D warnings -D clippy::correctness -D clippy::suspicious -D clippy::complexity -D clippy::perf -D clippy::style
+      - name: Run cargo clippy with selected pedantic lints
+        uses: actions-rs/cargo@v1
+        with:
+          command: clippy
+          args: --all-targets --all-features -- -D warnings -D clippy::cast_lossless -D clippy::redundant_closure_for_method_calls -D clippy::uninlined_format_args -D clippy::manual_is_multiple_of -D clippy::needless_continue -D clippy::needless_for_each
+
+  security:
+    name: Security audit and additional checks
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout sources
+        uses: actions/checkout@v4
+      - name: Install toolchain
+        uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: nightly
+          override: true
+      - name: Cache cargo registry
+        uses: actions/cache@v3
+        with:
+          path: |
+            ~/.cargo/registry
+            ~/.cargo/git
+            target
+          key: ${{ runner.os }}-cargo-security-${{ hashFiles('**/Cargo.lock') }}
+      - name: Run cargo check with strict flags
+        uses: actions-rs/cargo@v1
+        with:
+          command: check
+          args: --all-targets --all-features
+      - name: Check documentation
+        uses: actions-rs/cargo@v1
+        with:
+          command: doc
+          args: --all-features --no-deps
+
   test:
     name: Test ${{ matrix.rust }} on ${{ matrix.os }}
     runs-on: ${{ matrix.os }}
@@ -55,13 +100,21 @@ jobs:
           - macOS-latest
     steps:
       - name: Checkout sources
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
       - name: Install Rust (${{ matrix.rust }})
         uses: actions-rs/toolchain@v1
         with:
           profile: minimal
           toolchain: ${{ matrix.rust }}
           override: true
+      - name: Cache cargo registry
+        uses: actions/cache@v3
+        with:
+          path: |
+            ~/.cargo/registry
+            ~/.cargo/git
+            target
+          key: ${{ runner.os }}-${{ matrix.rust }}-cargo-${{ hashFiles('**/Cargo.lock') }}
       - name: Run cargo test
         uses: actions-rs/cargo@v1
         with:

.gitignore

@@ -11,3 +11,4 @@
 /target/
 .vscode/
 Cargo.lock
+~/

.nextest.toml

@@ -0,0 +1,71 @@
+# .nextest.toml
+# Nextest configuration for May coroutine library
+
+[profile.default]
+# Don't fail fast - we want to see all test results
+fail-fast = false
+
+# Show slow tests (>60s) - important for coroutine timing tests
+status-level = "slow"
+
+# Retry flaky tests once - coroutines can have timing issues
+retries = 1
+
+# Run tests with reduced parallelism for coroutine stability
+test-threads = 4
+
+# Timeout for individual tests (important for coroutine tests that might hang)
+slow-timeout = { period = "120s", terminate-after = 2 }
+
+# Global timeout for the entire test run
+final-status-level = "slow"
+
+[profile.default.junit]
+# Generate JUnit XML for CI/CD integration
+path = "target/nextest/junit.xml"
+
+# Test groups for different types of tests
+[[profile.default.overrides]]
+filter = 'test(safe_spawn)'
+test-threads = 2
+slow-timeout = { period = "30s" }
+
+[[profile.default.overrides]]
+filter = 'test(integration)'
+test-threads = 1
+slow-timeout = { period = "60s" }
+
+[[profile.default.overrides]]
+filter = 'test(bench)'
+test-threads = 1
+retries = 0
+slow-timeout = { period = "180s" }
+
+# Coroutine-specific test overrides
+[[profile.default.overrides]]
+filter = 'test(coroutine) or test(spawn) or test(yield)'
+test-threads = 2
+slow-timeout = { period = "45s" }
+
+# I/O tests need more time and less concurrency
+[[profile.default.overrides]]
+filter = 'test(io) or test(net) or test(tcp) or test(udp)'
+test-threads = 1
+slow-timeout = { period = "90s" }
+
+# Sync primitive tests
+[[profile.default.overrides]]
+filter = 'test(mutex) or test(rwlock) or test(channel) or test(mpsc) or test(mpmc)'
+test-threads = 2
+slow-timeout = { period = "30s" }
+
+# Coverage profile for code coverage analysis
+[profile.coverage]
+# Minimal parallelism for stable coverage collection
+test-threads = 1
+retries = 0
+fail-fast = true
+slow-timeout = { period = "180s", terminate-after = 1 }
+
+[profile.coverage.junit]
+path = "target/nextest/coverage-junit.xml"