[Issue 19513] Use sched_getaffinity(2) to get the number of CPU cores if available

affinity(2) to get the number of CPU cores if available Currently std.parallelism.totalCPUs is implemented by sysconf(_SC_NPROCESSORS_ONLN) on Posix platoform. However, on GNU/Linux, usable number of processors may be restricted if a process runs in container. In case it'

[Issue 19513] Use sched_getaffinity(2) to get the number of CPU cores if available

created dlang/phobos pull request #7030 "Fix Issue 19513 - Use sched_getaffinity(2) to get the number of CPU cores if abailable" fixing this issue: - Fix Issue 19513 - Use sched_getaffinity(2) to get the number of CPU cores if available Currently std.parallelism.totalCPUs is impl