std::thread: available_parallelism implementation for vxWorks proposal. · model-checking/verify-rust-std@6aa00e1 (original) (raw)

Original file line number	Diff line number	Diff line change
@@ -462,8 +462,18 @@ pub fn available_parallelism() -> io::Result<NonZero> {
462	462
463	463	Ok(NonZero::new_unchecked(sinfo.cpu_count as usize))
464	464	}
	465	+} else if #[cfg(target_os = "vxworks")] {
	466	+// Note: there is also `vxCpuConfiguredGet`, closer to _SC_NPROCESSORS_CONF
	467	+// expectations than the actual cores availability.
	468	+ extern "C" {
	469	+fn vxCpuEnabledGet() -> libc::cpuset_t;
	470	+}
	471	+
	472	+// always fetches a valid bitmask
	473	+let set = unsafe { vxCpuEnabledGet() };
	474	+Ok(NonZero::new_unchecked(set.count_ones() as usize))
465	475	} else {
466		-// FIXME: implement on vxWorks, Redox, l4re
	476	+// FIXME: implement on Redox, l4re
467	477	Err(io::const_io_error!(io::ErrorKind::Unsupported, "Getting the number of hardware threads is not supported on the target platform"))
468	478	}
469	479	}