ó TRšNc@s8dZdZdZyRddlZddlZddlZejZdZ ej Z ej ƒZ d ZWneefk r}nXy1ddlZejZej Z ej Z d ZWneefk rČnXd „Zed kród „Zd „ZnAed krd„Zd„Zn dZZ Z d„Zd„ZdS(s› Portable file locking utilities. Based partially on example by Jonathan Feignberg in the Python Cookbook, licensed under the Python Software License. http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/65203 Example Usage:: >>> from django.core.files import locks >>> f = open('./file', 'wb') >>> locks.lock(f, locks.LOCK_EX) >>> f.write('Django') >>> f.close() tLOCK_EXtLOCK_SHtLOCK_NBtlocktunlocki˙˙˙˙NitnttposixcCst|dƒr|jƒp|S(sCGet a filedescriptor from something which could be a file or an fd.tfileno(thasattrR(tf((sD/home/panlixing/Python_Projects/gaeseries/django/core/files/locks.pytfd+scCs2tjt|ƒƒ}tj||ddtƒdS(Nii˙˙(t win32filet_get_osfhandleR t LockFileExt __overlapped(tfiletflagsthfile((sD/home/panlixing/Python_Projects/gaeseries/django/core/files/locks.pyR0scCs/tjt|ƒƒ}tj|ddtƒdS(Nii˙˙(R R R t UnlockFileExR(RR((sD/home/panlixing/Python_Projects/gaeseries/django/core/files/locks.pyR4scCstjt|ƒ|ƒdS(N(tfcntltlockfR (RR((sD/home/panlixing/Python_Projects/gaeseries/django/core/files/locks.pyR8scCstjt|ƒtjƒdS(N(RRR tLOCK_UN(R((sD/home/panlixing/Python_Projects/gaeseries/django/core/files/locks.pyR;scCsdS(N((RR((sD/home/panlixing/Python_Projects/gaeseries/django/core/files/locks.pyRBscCsdS(N((R((sD/home/panlixing/Python_Projects/gaeseries/django/core/files/locks.pyREs(sLOCK_EXsLOCK_SHsLOCK_NBslocksunlock(t__doc__t__all__tNonet system_typetwin32conR t pywintypestLOCKFILE_EXCLUSIVE_LOCKRRtLOCKFILE_FAIL_IMMEDIATELYRt OVERLAPPEDRt ImportErrortAttributeErrorRR RR(((sD/home/panlixing/Python_Projects/gaeseries/django/core/files/locks.pyts>