本文整理汇总了Python中swift.common.db.DatabaseBroker._preallocate方法的典型用法代码示例。如果您正苦于以下问题：Python DatabaseBroker._preallocate方法的具体用法？Python DatabaseBroker._preallocate怎么用？Python DatabaseBroker._preallocate使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类swift.common.db.DatabaseBroker的用法示例。
在下文中一共展示了DatabaseBroker._preallocate方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: test_DB_PREALLOCATION_setting
# 需要导入模块: from swift.common.db import DatabaseBroker [as 别名]
# 或者: from swift.common.db.DatabaseBroker import _preallocate [as 别名]
def test_DB_PREALLOCATION_setting(self):
u = uuid4().hex
b = DatabaseBroker(u)
swift.common.db.DB_PREALLOCATION = False
b._preallocate()
swift.common.db.DB_PREALLOCATION = True
self.assertRaises(OSError, b._preallocate)示例2: test_disk_preallocate
# 需要导入模块: from swift.common.db import DatabaseBroker [as 别名]
# 或者: from swift.common.db.DatabaseBroker import _preallocate [as 别名]
def test_disk_preallocate(self):
test_size = [-1]
def fallocate_stub(fd, size):
test_size[0] = size
with patch('swift.common.db.fallocate', fallocate_stub):
db_file = os.path.join(self.testdir, 'pre.db')
# Write 1 byte and hope that the fs will allocate less than 1 MB.
f = open(db_file, "w")
f.write('@')
f.close()
b = DatabaseBroker(db_file)
b._preallocate()
# We only wrote 1 byte, so we should end with the 1st step or 1 MB.
self.assertEquals(test_size[0], 1024 * 1024)