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require File.expand_path('../../../spec_helper', __FILE__)
describe "Process.setpriority" do
platform_is_not :windows do
it "sets the scheduling priority for a specified process" do
priority = Process.getpriority(Process::PRIO_PROCESS, 0)
IO.popen('-') do |f|
if f
pr = Integer(f.gets)
Integer(f.gets).should == 0
Integer(f.gets).should == (pr+1)
else
pr = Process.getpriority(Process::PRIO_PROCESS, 0)
p pr
p Process.setpriority(Process::PRIO_PROCESS, 0, (pr + 1))
p Process.getpriority(Process::PRIO_PROCESS, 0)
end
end
Process.getpriority(Process::PRIO_PROCESS, 0).should == priority
end
# Darwin and FreeBSD don't seem to handle these at all, getting all out of
# whack with either permission errors or just the wrong value
platform_is_not :darwin, :freebsd do
it "sets the scheduling priority for a specified process group" do
priority = Process.getpriority(Process::PRIO_PGRP, 0)
IO.popen('-') do |f|
if f
pr = Integer(f.gets)
Integer(f.gets).should == 0
Integer(f.gets).should == (pr+1)
else
Process.setpgrp
pr = Process.getpriority(Process::PRIO_PGRP, 0)
p pr
p Process.setpriority(Process::PRIO_PGRP, 0, pr + 1)
p Process.getpriority(Process::PRIO_PGRP, 0)
end
end
Process.getpriority(Process::PRIO_PGRP, 0).should == priority
end
end
as_superuser do
it "sets the scheduling priority for a specified user" do
p = Process.getpriority(Process::PRIO_USER, 0)
Process.setpriority(Process::PRIO_USER, 0, p + 1).should == 0
Process.getpriority(Process::PRIO_USER, 0).should == (p + 1)
Process.setpriority(Process::PRIO_USER, 0, p).should == 0
end
end
end
end
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