Source code for gpi.runnable

#    Copyright (C) 2014  Dignity Health
#
#    This program is free software: you can redistribute it and/or modify
#    it under the terms of the GNU Lesser General Public License as published by
#    the Free Software Foundation, either version 3 of the License, or
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#    This program is distributed in the hope that it will be useful,
#    but WITHOUT ANY WARRANTY; without even the implied warranty of
#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#    GNU Lesser General Public License for more details.
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#    You should have received a copy of the GNU Lesser General Public License
#    along with this program.  If not, see <http://www.gnu.org/licenses/>.
#
#    NO CLINICAL USE.  THE SOFTWARE IS NOT INTENDED FOR COMMERCIAL PURPOSES
#    AND SHOULD BE USED ONLY FOR NON-COMMERCIAL RESEARCH PURPOSES.  THE
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from gpi import QtCore

def ExecRunnable(runnable):
    ''' A quick way to spawn a thread for function objects and bound methods

    Example:

    ExecRunnable(Runnable(<myfunc>))
    '''

    tp = QtCore.QThreadPool.globalInstance()
    tp.start(runnable)

class Runnable(QtCore.QRunnable):
    '''A helper class to offload I/O bound operations so that the UI can
    continue to function and redraw.
    '''

    def __init__(self, func):
        super().__init__()
        self.run = func
        self.setAutoDelete(True)