Python stat.ST_DEV属性代码示例

# 需要导入模块: import stat [as 别名]
# 或者: from stat import ST_DEV [as 别名]
def emit(self, record):
        """
        Emit a record.

        First check if the underlying file has changed, and if it
        has, close the old stream and reopen the file to get the
        current stream.
        """
        if not os.path.exists(self.baseFilename):
            stat = None
            changed = 1
        else:
            stat = os.stat(self.baseFilename)
            changed = (stat[ST_DEV] != self.dev) or (stat[ST_INO] != self.ino)
        if changed and self.stream is not None:
            self.stream.flush()
            self.stream.close()
            self.stream = self._open()
            if stat is None:
                stat = os.stat(self.baseFilename)
            self.dev, self.ino = stat[ST_DEV], stat[ST_INO]
        logging.FileHandler.emit(self, record) 

# 需要导入模块: import stat [as 别名]
# 或者: from stat import ST_DEV [as 别名]
def test_pex_builder_copy_or_link():
  with nested(temporary_dir(), temporary_dir(), temporary_dir()) as (td1, td2, td3):
    src = os.path.join(td1, 'exe.py')
    with open(src, 'w') as fp:
      fp.write(exe_main)

    def build_and_check(path, copy):
      pb = PEXBuilder(path=path, copy=copy)
      pb.add_source(src, 'exe.py')

      path_clone = os.path.join(path, '__clone')
      pb.clone(into=path_clone)

      for root in path, path_clone:
        s1 = os.stat(src)
        s2 = os.stat(os.path.join(root, 'exe.py'))
        is_link = (s1[stat.ST_INO], s1[stat.ST_DEV]) == (s2[stat.ST_INO], s2[stat.ST_DEV])
        if copy:
          assert not is_link
        else:
          assert is_link

    build_and_check(td2, False)
    build_and_check(td3, True) 

# 需要导入模块: import stat [as 别名]
# 或者: from stat import ST_DEV [as 别名]
def reopen_file(self):
        try:
            # stat the file by path, checking for existence
            sres = os.stat(self.baseFilename)
        except OSError as err:
            if err.errno == errno.ENOENT:
                sres = None
            else:
                raise
        # compare file system stat with that of our stream file handle
        if (not sres or
                sres[stat.ST_DEV] != self.dev or
                sres[stat.ST_INO] != self.ino):
            if self.stream is not None:
                # we have an open file handle, clean it up
                self.stream.flush()
                self.stream.close()
                self.stream = None
                # open a new file handle and get new stat info from that fd
                self.stream = self._open()
                self._statstream() 

# 需要导入模块: import stat [as 别名]
# 或者: from stat import ST_DEV [as 别名]
def _statstream(self):
        if self.stream:
            sres = os.fstat(self.stream.fileno())
            self.dev, self.ino = sres[ST_DEV], sres[ST_INO] 

# 需要导入模块: import stat [as 别名]
# 或者: from stat import ST_DEV [as 别名]
def emit(self, record):
        """
        Emit a record.

        First check if the underlying file has changed, and if it
        has, close the old stream and reopen the file to get the
        current stream.
        """
        # Reduce the chance of race conditions by stat'ing by path only
        # once and then fstat'ing our new fd if we opened a new log stream.
        # See issue #14632: Thanks to John Mulligan for the problem report
        # and patch.
        try:
            # stat the file by path, checking for existence
            sres = os.stat(self.baseFilename)
        except OSError as err:
            if err.errno == errno.ENOENT:
                sres = None
            else:
                raise
        # compare file system stat with that of our stream file handle
        if not sres or sres[ST_DEV] != self.dev or sres[ST_INO] != self.ino:
            if self.stream is not None:
                # we have an open file handle, clean it up
                self.stream.flush()
                self.stream.close()
                # open a new file handle and get new stat info from that fd
                self.stream = self._open()
                self._statstream()
        logging.FileHandler.emit(self, record) 

# 需要导入模块: import stat [as 别名]
# 或者: from stat import ST_DEV [as 别名]
def __init__(self, filename, mode='a', encoding=None, delay=0):
        logging.FileHandler.__init__(self, filename, mode, encoding, delay)
        if not os.path.exists(self.baseFilename):
            self.dev, self.ino = -1, -1
        else:
            stat = os.stat(self.baseFilename)
            self.dev, self.ino = stat[ST_DEV], stat[ST_INO] 

# 需要导入模块: import stat [as 别名]
# 或者: from stat import ST_DEV [as 别名]
def emit(self, record):
        """
        Emit a record.

        First check if the underlying file has changed, and if it
        has, close the old stream and reopen the file to get the
        current stream.
        """
        # Reduce the chance of race conditions by stat'ing by path only
        # once and then fstat'ing our new fd if we opened a new log stream.
        # See issue #14632: Thanks to John Mulligan for the problem report
        # and patch.
        try:
            # stat the file by path, checking for existence
            sres = os.stat(self.baseFilename)
        except OSError as err:
            if err.errno == errno.ENOENT:
                sres = None
            else:
                raise
        # compare file system stat with that of our stream file handle
        if not sres or sres[ST_DEV] != self.dev or sres[ST_INO] != self.ino:
            if self.stream is not None:
                # we have an open file handle, clean it up
                self.stream.flush()
                self.stream.close()
                self.stream = None  # See Issue #21742: _open () might fail.
                # open a new file handle and get new stat info from that fd
                self.stream = self._open()
                self._statstream()
        logging.FileHandler.emit(self, record) 

# 需要导入模块: import stat [as 别名]
# 或者: from stat import ST_DEV [as 别名]
def is_same_hard_link(filename:str, other:str):
    s1 = os.stat(filename)
    s2 = os.stat(other)
    return (s1[stat.ST_INO], s1[stat.ST_DEV]) == \
        (s2[stat.ST_INO], s2[stat.ST_DEV])

# MetaDB tables 

# 需要导入模块: import stat [as 别名]
# 或者: from stat import ST_DEV [as 别名]
def emit(self, record):
        """
        Emit a record.

        First check if the underlying file has changed, and if it
        has, close the old stream and reopen the file to get the
        current stream.
        """
        # Reduce the chance of race conditions by stat'ing by path only
        # once and then fstat'ing our new fd if we opened a new log stream.
        # See issue #14632: Thanks to John Mulligan for the problem report
        # and patch.
        try:
            # stat the file by path, checking for existence
            sres = os.stat(self.baseFilename)
        except FileNotFoundError:
            sres = None
        # compare file system stat with that of our stream file handle
        if not sres or sres[ST_DEV] != self.dev or sres[ST_INO] != self.ino:
            if self.stream is not None:
                # we have an open file handle, clean it up
                self.stream.flush()
                self.stream.close()
                self.stream = None  # See Issue #21742: _open () might fail.
                # open a new file handle and get new stat info from that fd
                self.stream = self._open()
                self._statstream()
        logging.FileHandler.emit(self, record) 

# 需要导入模块: import stat [as 别名]
# 或者: from stat import ST_DEV [as 别名]
def reopenIfNeeded(self):
        """
        Reopen log file if needed.

        Checks if the underlying file has changed, and if it
        has, close the old stream and reopen the file to get the
        current stream.
        """
        # Reduce the chance of race conditions by stat'ing by path only
        # once and then fstat'ing our new fd if we opened a new log stream.
        # See issue #14632: Thanks to John Mulligan for the problem report
        # and patch.
        try:
            # stat the file by path, checking for existence
            sres = os.stat(self.baseFilename)
        except FileNotFoundError:
            sres = None
        # compare file system stat with that of our stream file handle
        if not sres or sres[ST_DEV] != self.dev or sres[ST_INO] != self.ino:
            if self.stream is not None:
                # we have an open file handle, clean it up
                self.stream.flush()
                self.stream.close()
                self.stream = None  # See Issue #21742: _open () might fail.
                # open a new file handle and get new stat info from that fd
                self.stream = self._open()
                self._statstream() 

# 需要导入模块: import stat [as 别名]
# 或者: from stat import ST_DEV [as 别名]
def acquire(self):
        """Returns True if file has been changed, False otherwise"""
        ret = False
        while True:
            if not self.file:
                self.file = open(self.path, 'a')
                self.fstatd = os.fstat(self.file.fileno())
                ret = True
            try:
                fcntl.flock(self.file, fcntl.LOCK_EX)
            except Exception:
                try:
                    self.file.close()
                except Exception:
                    pass
                self.file = None
                raise
            try:
                statd = os.stat(self.path)
            except FileNotFoundError:
                try:
                    self.file.close()
                except Exception:
                    pass
                self.file = None
                continue
            except Exception:
                try:
                    self.file.close()
                except Exception:
                    pass
                self.file = None
                raise
            if self.fstatd[stat.ST_DEV] == statd[stat.ST_DEV] and \
               self.fstatd[stat.ST_INO] == statd[stat.ST_INO]:
                return ret
            self.file.close()
            self.file = None