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updated PR #279 - Merge branch 'fadvise' into merge

This commit is contained in:
Thomas Waldmann 2015-04-11 17:08:17 +02:00
parent 3653acd259 57071ce6fd
commit a6f8d51b37
1 changed files with 4 additions and 4 deletions
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8
attic/repository.py
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@ -555,10 +555,6 @@ class LoggedIO:
header = self.header_no_crc_fmt.pack(size, TAG_PUT)
crc = self.crc_fmt.pack(crc32(data, crc32(id, crc32(header))) & 0xffffffff)
fd.write(b''.join((crc, header, id, data)))
if hasattr(os, 'posix_fadvise'): # python >= 3.3, only on UNIX
# tell the OS that it does not need to cache what we just wrote,
# avoids spoiling the cache for the OS and other processes.
os.posix_fadvise(fd.fileno(), 0, 0, os.POSIX_FADV_DONTNEED)
self.offset += size
return self.segment, offset
@ -583,5 +579,9 @@ class LoggedIO:
self.offset = 0
self._write_fd.flush()
os.fsync(self._write_fd.fileno())
if hasattr(os, 'posix_fadvise'): # python >= 3.3, only on UNIX
# tell the OS that it does not need to cache what we just wrote,
# avoids spoiling the cache for the OS and other processes.
os.posix_fadvise(self._write_fd.fileno(), 0, 0, os.POSIX_FADV_DONTNEED)
self._write_fd.close()
self._write_fd = None