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Code Issues Releases Wiki Activity

use a contextmanager to ensure correct memoryview release 

see #4243.
This commit is contained in:
Thomas Waldmann 2019-01-06 02:11:36 +01:00
parent b8fe7b6b83
commit 02f3daebbe
1 changed files with 1 additions and 3 deletions
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4
src/borg/repository.py
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@ -1395,8 +1395,7 @@ class LoggedIO:
with open(backup_filename, 'rb') as backup_fd: with open(backup_filename, 'rb') as backup_fd:
# note: file must not be 0 size (windows can't create 0 size mapping) # note: file must not be 0 size (windows can't create 0 size mapping)
with mmap.mmap(backup_fd.fileno(), 0, access=mmap.ACCESS_READ) as mm: with mmap.mmap(backup_fd.fileno(), 0, access=mmap.ACCESS_READ) as mm:
data = memoryview(mm) with memoryview(mm) as data, open(filename, 'wb') as fd:
with open(filename, 'wb') as fd:
fd.write(MAGIC) fd.write(MAGIC)
while len(data) >= self.header_fmt.size: while len(data) >= self.header_fmt.size:
crc, size, tag = self.header_fmt.unpack(data[:self.header_fmt.size]) crc, size, tag = self.header_fmt.unpack(data[:self.header_fmt.size])
@ -1408,7 +1407,6 @@ class LoggedIO:
continue continue
fd.write(data[:size]) fd.write(data[:size])
data = data[size:] data = data[size:]
data.release()
def read(self, segment, offset, id, read_data=True): def read(self, segment, offset, id, read_data=True):
""" """