fecfc0e6cc
Make `std:🧵:available_concurrency` support process-limited number of CPUs
Use `libc::sched_getaffinity` and count the number of CPUs in the returned mask. This handles cases where the process doesn't have access to all CPUs, such as when limited via `taskset` or similar.
This also covers cgroup cpusets.
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| hermit | ||
| itron | ||
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| wasi | ||
| wasm | ||
| windows | ||
| mod.rs | ||