U
    +5øi	  ã                   @   s*   d dl Z d dlZd dlZG dd„ dƒZdS )é    Nc                   @   s8   e Zd ZdZdd„ Zdd„ Zdd„ Zdd	„ Zd
d„ ZdS )ÚPidfilezž    Manage a PID file. If a specific name is provided
    it and '"%s.oldpid" % name' will be used. Otherwise
    we create a temp file using os.mkstemp.
    c                 C   s   || _ d | _d S ©N)ÚfnameÚpid)Úselfr   © r   ú4/tmp/pip-unpacked-wheel-pa3uujlc/gunicorn/pidfile.pyÚ__init__   s    zPidfile.__init__c                 C   sÂ   |   ¡ }|r2|t ¡ krd S d}t||| jf ƒ‚|| _tj | j¡}|rbtj |¡sbtd| ƒ‚t	j
|d�\}}t |d| j  d¡¡ | jr t || j¡ n|| _t |¡ t | jd¡ d S )Nz5Already running on PID %s (or pid file '%s' is stale)z'%s doesn't exist. Can't create pidfile.)Údirz%s
zutf-8i¤  )ÚvalidateÚosÚgetpidÚRuntimeErrorr   r   ÚpathÚdirnameÚisdirÚtempfileÚmkstempÚwriteÚencodeÚrenameÚcloseÚchmod)r   r   ZoldpidÚmsgZfdirÚfdr   r   r   r   Úcreate   s"    
zPidfile.createc                 C   s   |   ¡  || _|  | j¡ d S r   )Úunlinkr   r   r   )r   r   r   r   r   r   .   s    zPidfile.renamec              	   C   sZ   z@t | jƒ�}t| ¡ pdƒ}W 5 Q R X || jkr>t | j¡ W n tk
rT   Y nX dS )z delete pidfiler   N)Úopenr   ÚintÚreadr   r   r   Ú	Exception)r   ÚfZpid1r   r   r   r   3   s    
zPidfile.unlinkc                 C   s6  | j s
dS zät| j ƒ�Ð}zt| ¡ ƒ}W n" tk
rJ   Y W 5 Q R £ W dS X z t |d¡ |W W  5 Q R £ W S  tk
rà } zV|jd t	j
kr¨| W Y ¢<W  5 Q R £ W S |jd t	jkrÎW Y ¢W 5 Q R £ W dS ‚ W 5 d}~X Y nX W 5 Q R X W nB tk
�r0 } z"|jd t	jk�rW Y ¢
dS ‚ W 5 d}~X Y nX dS )z- Validate pidfile and make it stale if neededNr   )r   r   r   r   Ú
ValueErrorr   ÚkillÚOSErrorÚargsÚerrnoÚEPERMZESRCHÚENOENT)r   r!   ÚwpidÚer   r   r   r   >   s*    "
zPidfile.validateN)	Ú__name__Ú
__module__Ú__qualname__Ú__doc__r	   r   r   r   r   r   r   r   r   r   
   s   r   )r&   r   r   r   r   r   r   r   Ú<module>   s   