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标题：[python-chinese] 关于fcntl文件锁，想和大家讨论一下

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楼主 2006年11月23日星期四 11:06

=?GB2312?B?u8bBiA==?= huangchonggnu在gmail.com
星期四十一月 23 11:06:34 HKT 2006

1£¬ ÎÒÃÇÔÚ¶ÔÎÄ¼þ½øÐÐ'w'²Ù×÷Ê±£¬Îª·ÀÖ¹½ø³Ì¼ä³åÍ»£¬ÊÇ·ñÖ»ÄÜÓÃÅÅËüËøLOCK_EX£¿

2£¬Èç¹ûµÚÒ»¸öÎÊÌâµÄ»Ø´ðÊÇ¿Ï¶¨µÄ£¬LOCK_SHÖ»ÄÜÓÃÔÚ¶ÁÎÄ¼þÊ±ÁË£¿µ±¶ÔÎÄ¼þ½øÐÐ'r'²Ù×÷£¬ÓÐLOCK_SHµÄ½ø³Ì¾ÍÓÐ¶ÁÈ¨ÏÞ£¬Ã»ÓÐLOCK_SHµÄ½ø³Ì¾ÍÃ»ÓÐ¶ÁÈ¨ÏÞ£¬ÊÇÕâÑùÂð£¿

3£¬ µ±½ø³ÌA¶ÔÎÄ¼þ½øÐÐÐ´²Ù×÷Ê±Ê¹ÓÃLOCK_EX£¬Í¬Ê±½ø³ÌB¶ÔÎÄ¼þ½øÐÐ¶Á²Ù×÷£¬ÊÇ·ñÄÜ¶Áµ½ÄÚÈÝÄØ£¿
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李迎辉

0楼 2006年11月23日星期四 11:45

limodou limodou在gmail.com
星期四十一月 23 11:45:14 HKT 2006

On 11/23/06, »ÆÁ <huangchonggnu在gmail.com> wrote:
> 1£¬ ÎÒÃÇÔÚ¶ÔÎÄ¼þ½øÐÐ'w'²Ù×÷Ê±£¬Îª·ÀÖ¹½ø³Ì¼ä³åÍ»£¬ÊÇ·ñÖ»ÄÜÓÃÅÅËüËøLOCK_EX£¿
>
> 2£¬Èç¹ûµÚÒ»¸öÎÊÌâµÄ»Ø´ðÊÇ¿Ï¶¨µÄ£¬LOCK_SHÖ»ÄÜÓÃÔÚ¶ÁÎÄ¼þÊ±ÁË£¿µ±¶ÔÎÄ¼þ½øÐÐ'r'²Ù×÷£¬ÓÐLOCK_SHµÄ½ø³Ì¾ÍÓÐ¶ÁÈ¨ÏÞ£¬Ã»ÓÐLOCK_SHµÄ½ø³Ì¾ÍÃ»ÓÐ¶ÁÈ¨ÏÞ£¬ÊÇÕâÑùÂð£¿
>
> 3£¬ µ±½ø³ÌA¶ÔÎÄ¼þ½øÐÐÐ´²Ù×÷Ê±Ê¹ÓÃLOCK_EX£¬Í¬Ê±½ø³ÌB¶ÔÎÄ¼þ½øÐÐ¶Á²Ù×÷£¬ÊÇ·ñÄÜ¶Áµ½ÄÚÈÝÄØ£¿
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ÅÅËüËøÓ¦¸ÃÊÇ±ðÈË²»ÄÜ¶ÁÒ²²»ÄÜÐ´¡£¶ø¹²ÏíËøÊÇ±ðÈË¿ÉÒÔ¶Á£¬²»ÄÜÐ´¡£Èç¹û·ÇËüËø¼ÓÉÏºó£¬ÁíÒ»¸ö½ø³ÌÓ¦¸ÃÊÇµÈ´ý°É¡£ÖÁÓÚÓÐÃ»ÓÐ³¬Ê±ÎÒÃ»ÓÐÌ«×¢Òâ¡£

-- 
I like python!
UliPad <>: http://wiki.woodpecker.org.cn/moin/UliPad
My Blog: http://www.donews.net/limodou

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徐继哲

0楼 2006年11月23日星期四 11:48

bird devdoer devdoer在gmail.com
星期四十一月 23 11:48:48 HKT 2006

1.Õâ¸öÊÇÓÉÄã×Ô¼º¾ö¶¨µÄ¡£Èç¹ûÊÇ·ÇÇ¿ÖÆÐÔËøµÄ»°£¬¼´Ê¹ÓÐ½ø³Ì¼ÓÁËÅÅËûËø£¬ÆäËû½ø³ÌÈÔÈ»ÊÇ¿ÉÒÔÐ´µÄ¡£
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>
>
> _______________________________________________
> python-chinese
> Post: send python-chinese at lists.python.cn
> Subscribe: send subscribe to python-chinese-request at lists.python.cn
> Unsubscribe: send unsubscribe to  python-chinese-request at lists.python.cn
> Detail Info: http://python.cn/mailman/listinfo/python-chinese
>



-- 
devdoer
devdoer at gmail.com
http://project.mytianwang.cn/cgi-bin/blog
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0楼 2006年11月23日星期四 12:44

=?GB2312?B?u8bBiA==?= huangchonggnu在gmail.com
星期四十一月 23 12:44:27 HKT 2006

Ç¿ÖÆÐÔËøÖ¸µÄÊÇÄÄÐ©ËøÄØ£¬ÓÐ¾ßÌåµÄÓÃ·¨Õ¹Ê¾Ò»ÏÂÂð

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> > 1£¬ ÎÒÃÇÔÚ¶ÔÎÄ¼þ½øÐÐ'w'²Ù×÷Ê±£¬Îª·ÀÖ¹½ø³Ì¼ä³åÍ»£¬ÊÇ·ñÖ»ÄÜÓÃÅÅËüËøLOCK_EX£¿
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> > 2£¬Èç¹ûµÚÒ»¸öÎÊÌâµÄ»Ø´ðÊÇ¿Ï¶¨µÄ£¬LOCK_SHÖ»ÄÜÓÃÔÚ¶ÁÎÄ¼þÊ±ÁË£¿µ±¶ÔÎÄ¼þ½øÐÐ'r'²Ù×÷£¬ÓÐLOCK_SHµÄ½ø³Ì¾ÍÓÐ¶ÁÈ¨ÏÞ£¬Ã»ÓÐLOCK_SHµÄ½ø³Ì¾ÍÃ»ÓÐ¶ÁÈ¨ÏÞ£¬ÊÇÕâÑùÂð£¿
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> >
> >
> > _______________________________________________
> > python-chinese
> > Post: send python-chinese在lists.python.cn
> > Subscribe: send subscribe to python-chinese-request在lists.python.cn
> > Unsubscribe: send unsubscribe to  python-chinese-request在lists.python.cn
> > Detail Info: http://python.cn/mailman/listinfo/python-chinese
> >
>
>
>
> --
> devdoer
> devdoer在gmail.com
> http://project.mytianwang.cn/cgi-bin/blog
> _______________________________________________
> python-chinese
> Post: send python-chinese在lists.python.cn
> Subscribe: send subscribe to python-chinese-request在lists.python.cn
> Unsubscribe: send unsubscribe to   python-chinese-request在lists.python.cn
> Detail Info: http://python.cn/mailman/listinfo/python-chinese
>
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0楼 2006年11月23日星期四 12:53

=?GB2312?B?u8bBiA==?= huangchonggnu在gmail.com
星期四十一月 23 12:53:29 HKT 2006

ÄãµÄ»Ø´ð£¬ÎÒÕâÑùÀí½â£¬Èç¹ûÓÃ¹²ÏíËø±£Ö¤ÎÄ¼þÍ¬²½²Ù×÷Ò»ÖÂ£¬
µ±½ø³ÌAÐ´ÎÄ¼þÊ±£º
  fd = open(filename, 'w')
  fcntl.flock(fd, LOCK_SH)
  .....
½ø³ÌBËæºó½øÈë£¬Ö»ÊÇ¶ÁÎÄ¼þ£º
   fd = open(filename, 'r')
   fcntl.flock(fd, LOCK_SH)
   .....
¾Í¿ÉÒÔ¶Áµ½ÄÚÈÝÁË£¬µ«ÈôÒªÐ´ÎÄ¼þ¾ÍÒªµÈ´ý

µ«Èç¹û¸ÄÓÃÅÅËüËø¾ÍÁ¬¶ÁÎÄ¼þÒ²²»ÐÐÁË

ÔÚ06-11-23£¬limodou <limodou在gmail.com> Ð´µÀ£º
>
> On 11/23/06, »ÆÁ <huangchonggnu在gmail.com> wrote:
> > 1£¬ ÎÒÃÇÔÚ¶ÔÎÄ¼þ½øÐÐ'w'²Ù×÷Ê±£¬Îª·ÀÖ¹½ø³Ì¼ä³åÍ»£¬ÊÇ·ñÖ»ÄÜÓÃÅÅËüËøLOCK_EX£¿
> >
> >
> 2£¬Èç¹ûµÚÒ»¸öÎÊÌâµÄ»Ø´ðÊÇ¿Ï¶¨µÄ£¬LOCK_SHÖ»ÄÜÓÃÔÚ¶ÁÎÄ¼þÊ±ÁË£¿µ±¶ÔÎÄ¼þ½øÐÐ'r'²Ù×÷£¬ÓÐLOCK_SHµÄ½ø³Ì¾ÍÓÐ¶ÁÈ¨ÏÞ£¬Ã»ÓÐLOCK_SHµÄ½ø³Ì¾ÍÃ»ÓÐ¶ÁÈ¨ÏÞ£¬ÊÇÕâÑùÂð£¿
> >
> > 3£¬ µ±½ø³ÌA¶ÔÎÄ¼þ½øÐÐÐ´²Ù×÷Ê±Ê¹ÓÃLOCK_EX£¬Í¬Ê±½ø³ÌB¶ÔÎÄ¼þ½øÐÐ¶Á²Ù×÷£¬ÊÇ·ñÄÜ¶Áµ½ÄÚÈÝÄØ£¿
> >
> >
> ÅÅËüËøÓ¦¸ÃÊÇ±ðÈË²»ÄÜ¶ÁÒ²²»ÄÜÐ´¡£¶ø¹²ÏíËøÊÇ±ðÈË¿ÉÒÔ¶Á£¬²»ÄÜÐ´¡£Èç¹û·ÇËüËø¼ÓÉÏºó£¬ÁíÒ»¸ö½ø³ÌÓ¦¸ÃÊÇµÈ´ý°É¡£ÖÁÓÚÓÐÃ»ÓÐ³¬Ê±ÎÒÃ»ÓÐÌ«×¢Òâ¡£
>
> --
> I like python!
> UliPad <>: http://wiki.woodpecker.org.cn/moin/UliPad
> My Blog: http://www.donews.net/limodou
>
> _______________________________________________
> python-chinese
> Post: send python-chinese在lists.python.cn
> Subscribe: send subscribe to python-chinese-request在lists.python.cn
> Unsubscribe: send unsubscribe to  python-chinese-request在lists.python.cn
> Detail Info: http://python.cn/mailman/listinfo/python-chinese
>
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李迎辉

0楼 2006年11月23日星期四 12:55

limodou limodou在gmail.com
星期四十一月 23 12:55:18 HKT 2006

On 11/23/06, »ÆÁ <huangchonggnu在gmail.com> wrote:
> ÄãµÄ»Ø´ð£¬ÎÒÕâÑùÀí½â£¬Èç¹ûÓÃ¹²ÏíËø±£Ö¤ÎÄ¼þÍ¬²½²Ù×÷Ò»ÖÂ£¬
> µ±½ø³ÌAÐ´ÎÄ¼þÊ±£º
>   fd = open(filename, 'w')
>   fcntl.flock(fd, LOCK_SH)
>   .....
> ½ø³ÌBËæºó½øÈë£¬Ö»ÊÇ¶ÁÎÄ¼þ£º
>    fd = open(filename, 'r')
>    fcntl.flock(fd, LOCK_SH)
>    .....
> ¾Í¿ÉÒÔ¶Áµ½ÄÚÈÝÁË£¬µ«ÈôÒªÐ´ÎÄ¼þ¾ÍÒªµÈ´ý
>
> µ«Èç¹û¸ÄÓÃÅÅËüËø¾ÍÁ¬¶ÁÎÄ¼þÒ²²»ÐÐÁË
>
ÎÒÊÇÕâÑùÀí½âµÄ¡£

-- 
I like python!
UliPad <>: http://wiki.woodpecker.org.cn/moin/UliPad
My Blog: http://www.donews.net/limodou

[导入自Mailman归档：http://www.zeuux.org/pipermail/zeuux-python]

0楼 2006年11月23日星期四 13:09

=?GB2312?B?u8bBiA==?= huangchonggnu在gmail.com
星期四十一月 23 13:09:26 HKT 2006

"Èç¹û½ø³ÌBÃ»ÓÐ½øÐÐËø²âÊÔ£¬Ò²¾ÍÊÇËµËü²»×ñÊØÐ×÷½ø³Ì¼äµÄÔ¼¶¨£¬ÊÇ¿ÉÒÔ¶ÁµÄ£¬µ«ÊÇ¿ÉÄÜ»á³öÏÖÂß¼ÉÏµÄ²»Ò»ÖÂÐÔ¡£"quote

µ±½ø³ÌAÐ´ÎÄ¼þÊ±, ×ñÑ¿ªÎÄ¼þ£¬¼ÓËø£¬²Ù×÷¶ÁÐ´£¬½âËø£¬¹Ø±ÕÎÄ¼þµÄ²½Öè
fd = open(filename, 'w')
fcntl.flock(fd, LOCK_SH) .....
½ø³ÌBËæºó½øÈë£¬Ö»ÊÇ¶ÁÎÄ¼þ, Ã»ÓÐ×ñÑÒÔÉÏ²½Öè£º
fd = open(filename, 'r')
.....
fd.close()
B¿ÉÒÔ¶Á,ÊÇÕâÑùÂð?


ÔÚ06-11-23£¬bird devdoer <devdoer在gmail.com> Ð´µÀ£º
>
> 1.Õâ¸öÊÇÓÉÄã×Ô¼º¾ö¶¨µÄ¡£Èç¹ûÊÇ·ÇÇ¿ÖÆÐÔËøµÄ»°£¬¼´Ê¹ÓÐ½ø³Ì¼ÓÁËÅÅËûËø£¬ÆäËû½ø³ÌÈÔÈ»ÊÇ¿ÉÒÔÐ´µÄ¡£
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> ÎÒµÄÀí½â£¬»¶ÓÌÖÂÛ
>
> ÔÚ06-11-23£¬»ÆÁ <huangchonggnu在gmail.com> Ð´µÀ£º
> >
> > 1£¬ ÎÒÃÇÔÚ¶ÔÎÄ¼þ½øÐÐ'w'²Ù×÷Ê±£¬Îª·ÀÖ¹½ø³Ì¼ä³åÍ»£¬ÊÇ·ñÖ»ÄÜÓÃÅÅËüËøLOCK_EX£¿
> >
> > 2£¬Èç¹ûµÚÒ»¸öÎÊÌâµÄ»Ø´ðÊÇ¿Ï¶¨µÄ£¬LOCK_SHÖ»ÄÜÓÃÔÚ¶ÁÎÄ¼þÊ±ÁË£¿µ±¶ÔÎÄ¼þ½øÐÐ'r'²Ù×÷£¬ÓÐLOCK_SHµÄ½ø³Ì¾ÍÓÐ¶ÁÈ¨ÏÞ£¬Ã»ÓÐLOCK_SHµÄ½ø³Ì¾ÍÃ»ÓÐ¶ÁÈ¨ÏÞ£¬ÊÇÕâÑùÂð£¿
> >
> >
> > 3£¬ µ±½ø³ÌA¶ÔÎÄ¼þ½øÐÐÐ´²Ù×÷Ê±Ê¹ÓÃLOCK_EX£¬Í¬Ê±½ø³ÌB¶ÔÎÄ¼þ½øÐÐ¶Á²Ù×÷£¬ÊÇ·ñÄÜ¶Áµ½ÄÚÈÝÄØ£¿
> >
> >
> > _______________________________________________
> > python-chinese
> > Post: send python-chinese在lists.python.cn
> > Subscribe: send subscribe to python-chinese-request在lists.python.cn
> > Unsubscribe: send unsubscribe to  python-chinese-request在lists.python.cn
> > Detail Info: http://python.cn/mailman/listinfo/python-chinese
> >
>
>
>
> --
> devdoer
> devdoer在gmail.com
> http://project.mytianwang.cn/cgi-bin/blog
> _______________________________________________
> python-chinese
> Post: send python-chinese在lists.python.cn
> Subscribe: send subscribe to python-chinese-request在lists.python.cn
> Unsubscribe: send unsubscribe to  python-chinese-request在lists.python.cn
> Detail Info: http://python.cn/mailman/listinfo/python-chinese
>
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李迎辉

0楼 2006年11月23日星期四 13:11

limodou limodou在gmail.com
星期四十一月 23 13:11:51 HKT 2006

On 11/23/06, »ÆÁ <huangchonggnu在gmail.com> wrote:
> "Èç¹û½ø³ÌBÃ»ÓÐ½øÐÐËø²âÊÔ£¬Ò²¾ÍÊÇËµËü²»×ñÊØÐ×÷½ø³Ì¼äµÄÔ¼¶¨
> £¬ÊÇ¿ÉÒÔ¶ÁµÄ£¬µ«ÊÇ¿ÉÄÜ»á³öÏÖÂß¼ÉÏµÄ²»Ò»ÖÂÐÔ¡£"quote
>
> µ±½ø³ÌAÐ´ÎÄ¼þÊ±, ×ñÑ¿ªÎÄ¼þ£¬¼ÓËø£¬²Ù×÷¶ÁÐ´£¬½âËø£¬¹Ø±ÕÎÄ¼þµÄ²½Öè
> fd = open(filename, 'w')
> fcntl.flock(fd, LOCK_SH) .....
> ½ø³ÌBËæºó½øÈë£¬Ö»ÊÇ¶ÁÎÄ¼þ, Ã»ÓÐ×ñÑ ÒÔÉÏ²½Öè£º
> fd = open(filename, 'r')
> .....
> fd.close()
> B¿ÉÒÔ¶Á,ÊÇÕâÑùÂð?
>
ÊÇ²»ÊÇÕâÑù£¬ÎÒ½¨ÒéÄã×öÒ»ÏÂ²âÊÔ¾Í¿ÉÒÔÁË¡£

-- 
I like python!
UliPad <>: http://wiki.woodpecker.org.cn/moin/UliPad
My Blog: http://www.donews.net/limodou

[导入自Mailman归档：http://www.zeuux.org/pipermail/zeuux-python]

0楼 2006年11月23日星期四 16:20

=?GB2312?B?u8bBiA==?= huangchonggnu在gmail.com
星期四十一月 23 16:20:45 HKT 2006

¿ÉÒÔ¶Á£¬ÕâÊ±ºò¶ÁµÄ¿ÉÄÜÊÇ²»ÍêÕûµÄÎÄ¼þÄÚÈÝ¡£

ÔÚ06-11-23£¬limodou <limodou在gmail.com> Ð´µÀ£º
>
> On 11/23/06, »ÆÁ <huangchonggnu在gmail.com> wrote:
> > "Èç¹û½ø³ÌBÃ»ÓÐ½øÐÐËø²âÊÔ£¬Ò²¾ÍÊÇËµËü²»×ñÊØÐ×÷½ø³Ì¼äµÄÔ¼¶¨
> > £¬ÊÇ¿ÉÒÔ¶ÁµÄ£¬µ«ÊÇ¿ÉÄÜ»á³öÏÖÂß¼ÉÏµÄ²»Ò»ÖÂÐÔ¡£"quote
> >
> > µ±½ø³ÌAÐ´ÎÄ¼þÊ±, ×ñÑ¿ªÎÄ¼þ£¬¼ÓËø£¬²Ù×÷¶ÁÐ´£¬½âËø£¬¹Ø±ÕÎÄ¼þµÄ²½Öè
> > fd = open(filename, 'w')
> > fcntl.flock(fd, LOCK_SH) .....
> > ½ø³ÌBËæºó½øÈë£¬Ö»ÊÇ¶ÁÎÄ¼þ, Ã»ÓÐ×ñÑ ÒÔÉÏ²½Öè£º
> > fd = open(filename, 'r')
> > .....
> > fd.close()
> > B¿ÉÒÔ¶Á,ÊÇÕâÑùÂð?
> >
> ÊÇ²»ÊÇÕâÑù£¬ÎÒ½¨ÒéÄã×öÒ»ÏÂ²âÊÔ¾Í¿ÉÒÔÁË¡£
>
> --
> I like python!
> UliPad <>: http://wiki.woodpecker.org.cn/moin/UliPad
> My Blog: http://www.donews.net/limodou
>
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