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| author | Zach Reizner <zachr@google.com> | 2018-02-22 22:05:55 -0800 |
|---|---|---|
| committer | chrome-bot <chrome-bot@chromium.org> | 2018-03-07 16:54:45 -0800 |
| commit | a5358e8ffd53d04750dc2c3376abc3fb5df92659 (patch) | |
| tree | 9a69ba015ec288d6853317060dc3b453b4f955be /Cargo.lock | |
| parent | 5b6b192e34311924388715f1981e9ffca7c4b53c (diff) | |
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sys_util: add PollContext interface for using epoll
A common cause of silent 100% CPU usage on otherwise idle VMs is because some poll loop is waiting on sockets that were hung up on. An unrelated issue is that using the Poller interface requires dynamic allocation on every poll call for dynamically sized poll lists. The PollContext struct detects and warns about the first problem at runtime and solves the latter problem. TEST=cargo test -p sys_util BUG=chromium:816692 Change-Id: I42a9c961db07191d25bcba77c5136f5729400ec9 Reviewed-on: https://chromium-review.googlesource.com/933870 Commit-Ready: Zach Reizner <zachr@chromium.org> Tested-by: Zach Reizner <zachr@chromium.org> Reviewed-by: Chirantan Ekbote <chirantan@chromium.org>
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