1 files changed, 24 insertions, 0 deletions
diff --git a/spec/ruby/core/process/fixtures/clocks.rb b/spec/ruby/core/process/fixtures/clocks.rb
new file mode 100644
index 0000000000..5f45e8065b
--- /dev/null
+++ b/spec/ruby/core/process/fixtures/clocks.rb
@@ -0,0 +1,24 @@
+module ProcessSpecs
+  def self.clock_constants
+    clocks = []
+
+    platform_is_not :windows, :solaris do
+      clocks += Process.constants.select { |c| c.to_s.start_with?('CLOCK_') }
+
+      # These require CAP_WAKE_ALARM and are not documented in
+      # Process#clock_gettime they return EINVAL if the permission
+      # is not granted.
+      clocks -= [:CLOCK_BOOTTIME_ALARM, :CLOCK_REALTIME_ALARM]
+
+      # These clocks in practice on Linux do not seem to match
+      # their reported resolution.
+      clocks -= [:CLOCK_REALTIME_COARSE, :CLOCK_MONOTONIC_COARSE]
+
+      clocks.map! { |c|
+        [c, Process.const_get(c)]
+      }
+    end
+
+    clocks
+  end
+end