Files
tokio/.github/workflows/loom.yml
T
Carl Lerche 22862739dd rt: yield_now defers task until after driver poll (#5223)
Previously, calling `task::yield_now().await` would yield the current
task to the scheduler, but the scheduler would poll it again before
polling the resource drivers. This behavior can result in starving the
resource drivers.

This patch creates a queue tracking yielded tasks. The scheduler
notifies those tasks **after** polling the resource drivers.

Refs: #5209
2022-11-30 14:21:08 -08:00

50 lines
1.3 KiB
YAML

on:
push:
branches: ["master", "tokio-*.x"]
pull_request:
types: [labeled, opened, synchronize, reopened]
branches: ["master", "tokio-*.x"]
name: Loom
env:
RUSTFLAGS: -Dwarnings
RUST_BACKTRACE: 1
# Change to specific Rust release to pin
rust_stable: stable
permissions:
contents: read
jobs:
loom:
name: loom
# base_ref is null when it's not a pull request
if: github.repository_owner == 'tokio-rs' && (contains(github.event.pull_request.labels.*.name, 'R-loom') || (github.base_ref == null))
runs-on: ubuntu-latest
strategy:
matrix:
scope:
- --skip loom_pool
- loom_pool::group_a
- loom_pool::group_b
- loom_pool::group_c
- loom_pool::group_d
- time::driver
steps:
- uses: actions/checkout@v3
- name: Install Rust ${{ env.rust_stable }}
uses: actions-rs/toolchain@v1
with:
toolchain: ${{ env.rust_stable }}
override: true
- uses: Swatinem/rust-cache@v1
- name: loom ${{ matrix.scope }}
run: cargo test --lib --release --features full -- --nocapture $SCOPE
working-directory: tokio
env:
RUSTFLAGS: --cfg loom --cfg tokio_unstable -Dwarnings
LOOM_MAX_PREEMPTIONS: 2
LOOM_MAX_BRANCHES: 10000
SCOPE: ${{ matrix.scope }}