我们从Python开源项目中，提取了以下4个代码示例，用于说明如何使用psutil.IOPRIO_CLASS_IDLE。
def watch_backups(machines): # set nice and ionice for current process os.setpriority(os.PRIO_PROCESS, 0, 10) p = psutil.Process(os.getpid()) p.ionice(psutil.IOPRIO_CLASS_IDLE) i = inotify.adapters.Inotify() # TODO watch all paths for name in machines: d = os.path.join(BU_SYNC_DIR,name) i.add_watch( d.encode('utf-8') ) print( "Start watching {}".format(d) ) # wait for an inotify event for event in i.event_gen(): if event is None: continue # decode event info (header, type_names, watch_path, filename) = event watch_path = watch_path.decode('utf-8') filename = filename.decode('utf-8') # only take action of the stamp file was updated if filename != 'stamp': continue if header.mask & (inotify.constants.IN_MOVED_TO|inotify.constants.IN_CLOSE_WRITE): # only got here if a backup just finished _LOGGER.info("WD=(%d) MASK=(%d) COOKIE=(%d) LEN=(%d) MASK->NAMES=%s " "WATCH-PATH=[%s] FILENAME=[%s]", header.wd, header.mask, header.cookie, header.len, type_names, watch_path, filename) try: # handle the new backup new_backup(watch_path) except BackupError as e: _LOGGER.error(e)
def test_ionice(self): if LINUX: from psutil import (IOPRIO_CLASS_NONE, IOPRIO_CLASS_RT, IOPRIO_CLASS_BE, IOPRIO_CLASS_IDLE) self.assertEqual(IOPRIO_CLASS_NONE, 0) self.assertEqual(IOPRIO_CLASS_RT, 1) self.assertEqual(IOPRIO_CLASS_BE, 2) self.assertEqual(IOPRIO_CLASS_IDLE, 3) p = psutil.Process() try: p.ionice(2) ioclass, value = p.ionice() if enum is not None: self.assertIsInstance(ioclass, enum.IntEnum) self.assertEqual(ioclass, 2) self.assertEqual(value, 4) # p.ionice(3) ioclass, value = p.ionice() self.assertEqual(ioclass, 3) self.assertEqual(value, 0) # p.ionice(2, 0) ioclass, value = p.ionice() self.assertEqual(ioclass, 2) self.assertEqual(value, 0) p.ionice(2, 7) ioclass, value = p.ionice() self.assertEqual(ioclass, 2) self.assertEqual(value, 7) # self.assertRaises(ValueError, p.ionice, 2, 10) self.assertRaises(ValueError, p.ionice, 2, -1) self.assertRaises(ValueError, p.ionice, 4) self.assertRaises(TypeError, p.ionice, 2, "foo") self.assertRaisesRegex( ValueError, "can't specify value with IOPRIO_CLASS_NONE", p.ionice, psutil.IOPRIO_CLASS_NONE, 1) self.assertRaisesRegex( ValueError, "can't specify value with IOPRIO_CLASS_IDLE", p.ionice, psutil.IOPRIO_CLASS_IDLE, 1) self.assertRaisesRegex( ValueError, "'ioclass' argument must be specified", p.ionice, value=1) finally: p.ionice(IOPRIO_CLASS_NONE) else: p = psutil.Process() original = p.ionice() self.assertIsInstance(original, int) try: value = 0 # very low if original == value: value = 1 # low p.ionice(value) self.assertEqual(p.ionice(), value) finally: p.ionice(original) # self.assertRaises(ValueError, p.ionice, 3) self.assertRaises(TypeError, p.ionice, 2, 1)
