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Should always be able to use Etc.nprocessors #952

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Merged
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Mar 16, 2022
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Should always be able to use Etc.nprocessors #952

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35 changes: 1 addition & 34 deletions lib/concurrent-ruby/concurrent/utility/processor_counter.rb
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Original file line number Diff line number Diff line change
Expand Up @@ -79,42 +79,9 @@ def physical_processor_count
def compute_processor_count
if Concurrent.on_jruby?
java.lang.Runtime.getRuntime.availableProcessors
elsif Etc.respond_to?(:nprocessors) && (nprocessor = Etc.nprocessors rescue nil)
nprocessor
else
os_name = RbConfig::CONFIG["target_os"]
if os_name =~ /mingw|mswin/
require 'win32ole'
result = WIN32OLE.connect("winmgmts://").ExecQuery(
"select NumberOfLogicalProcessors from Win32_Processor")
result.to_enum.collect(&:NumberOfLogicalProcessors).reduce(:+)
elsif File.readable?("/proc/cpuinfo") && (cpuinfo_count = IO.read("/proc/cpuinfo").scan(/^processor/).size) > 0
cpuinfo_count
elsif File.executable?("/usr/bin/nproc")
IO.popen("/usr/bin/nproc --all", &:read).to_i
elsif File.executable?("/usr/bin/hwprefs")
IO.popen("/usr/bin/hwprefs thread_count", &:read).to_i
elsif File.executable?("/usr/sbin/psrinfo")
IO.popen("/usr/sbin/psrinfo", &:read).scan(/^.*on-*line/).size
elsif File.executable?("/usr/sbin/ioscan")
IO.popen("/usr/sbin/ioscan -kC processor", &:read).scan(/^.*processor/).size
elsif File.executable?("/usr/sbin/pmcycles")
IO.popen("/usr/sbin/pmcycles -m", &:read).count("\n")
elsif File.executable?("/usr/sbin/lsdev")
IO.popen("/usr/sbin/lsdev -Cc processor -S 1", &:read).count("\n")
elsif File.executable?("/usr/sbin/sysconf") and os_name =~ /irix/i
IO.popen("/usr/sbin/sysconf NPROC_ONLN", &:read).to_i
elsif File.executable?("/usr/sbin/sysctl")
IO.popen("/usr/sbin/sysctl -n hw.ncpu", &:read).to_i
elsif File.executable?("/sbin/sysctl")
IO.popen("/sbin/sysctl -n hw.ncpu", &:read).to_i
else
# TODO (pitr-ch 05-Nov-2016): warn about failures
1
end
Etc.nprocessors
end
rescue
return 1
end

def compute_physical_processor_count
Expand Down