bpo-32941: Add madvise() for mmap objects (GH-6172)
Allow mmap objects to access the madvise() system call.
diff --git a/Lib/test/test_mmap.py b/Lib/test/test_mmap.py
index 495d24a..7b2b100 100644
--- a/Lib/test/test_mmap.py
+++ b/Lib/test/test_mmap.py
@@ -739,6 +739,25 @@
# See bpo-34754 for details.
self.assertRaises(OSError, mm.flush, 1, len(b'python'))
+ @unittest.skipUnless(hasattr(mmap.mmap, 'madvise'), 'needs madvise')
+ def test_madvise(self):
+ size = 8192
+ m = mmap.mmap(-1, size)
+
+ with self.assertRaisesRegex(ValueError, "madvise start out of bounds"):
+ m.madvise(mmap.MADV_NORMAL, size)
+ with self.assertRaisesRegex(ValueError, "madvise start out of bounds"):
+ m.madvise(mmap.MADV_NORMAL, -1)
+ with self.assertRaisesRegex(ValueError, "madvise length invalid"):
+ m.madvise(mmap.MADV_NORMAL, 0, -1)
+ with self.assertRaisesRegex(OverflowError, "madvise length too large"):
+ m.madvise(mmap.MADV_NORMAL, PAGESIZE, sys.maxsize)
+ self.assertEqual(m.madvise(mmap.MADV_NORMAL), None)
+ self.assertEqual(m.madvise(mmap.MADV_NORMAL, PAGESIZE), None)
+ self.assertEqual(m.madvise(mmap.MADV_NORMAL, PAGESIZE, size), None)
+ self.assertEqual(m.madvise(mmap.MADV_NORMAL, 0, 2), None)
+ self.assertEqual(m.madvise(mmap.MADV_NORMAL, 0, size), None)
+
class LargeMmapTests(unittest.TestCase):