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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| .. | ||
| alloc | ||
| backtrace@7f14f76c8b | ||
| core | ||
| panic_abort | ||
| panic_unwind | ||
| proc_macro | ||
| profiler_builtins | ||
| rtstartup | ||
| rustc-std-workspace-alloc | ||
| rustc-std-workspace-core | ||
| rustc-std-workspace-std | ||
| std | ||
| stdarch@5fdbc476af | ||
| test | ||
| unwind | ||