i believe that win32 actually does support semaphores. see http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dllproc/bas e/using_synchronization.asp
for details on synchronization issues inside win32 (including mutex which is what i think you're looking for). or if you don't want a lot of #ifdef WIN32 in your code, you could look at using Apache Portable Runtime (http://apr.apache.org) to enable mutex (http://apr.apache.org/docs/apr/group__APR__ThreadMutex.html) dave -----Original Message----- From: Braulio José Solano Rojas [mailto:[EMAIL PROTECTED] Sent: Thursday, February 27, 2003 11:12 AM To: [EMAIL PROTECTED] Subject: Re: [PHP-DEV] Re: [PHP] Threading Hi! >"George Schlossnagle" <[EMAIL PROTECTED]> escribió en el mensaje news:[EMAIL PROTECTED] >On Thursday, February 27, 2003, at 01:50 PM, Braulio JosX Solano Rojas >wrote: > > Are there semaphores in PHP? > >Yes. I'd recommend a reading of the fine manual. I did of course. > Of course if you're actually writing an extension it doesn't matter > much if the semaphores are implemented in PHP or not, since you'll > probably just want to use the sysv ipc support of the os yourself, > without taking it through php userland functions. I already know about this functionality, but as you know this is only for Unix. And yes it matters if the semaphores are implemented in PHP since I need portability between different OSes. (I like Inter-Process Comunication, I am sorry not to have it on win32). I am working in an extension that provides functionality to read CDS/ISIS databases on PHP. Those databases are files (there is not a server, but a server is planned by the OpenIsis project [1]), so when there is concurrency we should provide consistent data. There is a paper on different solutions on how to solve this on PHP [2]. I was thinking of assume the worst case: PHP as a CGI. But, I am really interested in multi-threading inside PHP. CDS/ISIS is wide used in latin-america by librarians. If I could have a multi-platform solution, that would be great. Regards, Braulio [1] http://sourceforge.net/projects/isis [2] http://openisis.org/openisis/doc/Concurrency -- PHP Development Mailing List <http://www.php.net/> To unsubscribe, visit: http://www.php.net/unsub.php -- PHP Development Mailing List <http://www.php.net/> To unsubscribe, visit: http://www.php.net/unsub.php
