Bug #275047 - Split _emerge/__init__.py into smaller pieces (part 2).

Thanks to Sebastian Mingramm (few) <s.mingramm@gmx.de> for this patch.

svn path=/main/trunk/; revision=13667

1 files changed, 24 insertions, 0 deletions

diff --git a/pym/_emerge/getloadavg.py b/pym/_emerge/getloadavg.py
new file mode 100644
index 000000000..b5a66cce9
--- /dev/null
+++ b/pym/_emerge/getloadavg.py
@@ -0,0 +1,24 @@
+import os 
+
+getloadavg = getattr(os, "getloadavg", None)
+if getloadavg is None:
+	def getloadavg():
+		"""
+		Uses /proc/loadavg to emulate os.getloadavg().
+		Raises OSError if the load average was unobtainable.
+		"""
+		try:
+			loadavg_str = open('/proc/loadavg').readline()
+		except IOError:
+			# getloadavg() is only supposed to raise OSError, so convert
+			raise OSError('unknown')
+		loadavg_split = loadavg_str.split()
+		if len(loadavg_split) < 3:
+			raise OSError('unknown')
+		loadavg_floats = []
+		for i in xrange(3):
+			try:
+				loadavg_floats.append(float(loadavg_split[i]))
+			except ValueError:
+				raise OSError('unknown')
+		return tuple(loadavg_floats)