Re: [PHP-DEV] Re: [PHP] Threading
Hi! Thanks all of you for your answers, especially to Dave Viner. I will be investigating on how to solve my problem. Maybe someone of the core of PHP could point me on how to do mutual exclusion because I've seen code like the following inside PHP (however I don't know if I can use it): tsrm_mutex_lock(tsmm_mutex); ... tsrm_mutex_unlock(tsmm_mutex); Anyway, I will analyze my problem using the information I have and the answers I got. Again, thanks for your answers on this topic. Bye! Braulio Melvyn Sopacua [EMAIL PROTECTED] escribió en el mensaje news:[EMAIL PROTECTED] At 20:12 27-2-2003, Braulio José Solano Rojas wrote: 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). You are? Well, then install it: http://www.neuro.gatech.edu/users/cwilson/cygutils/cygipc/index.html With kind regards, Melvyn Sopacua ?php include(not_reflecting_employers_views.txt); ? -- PHP Development Mailing List http://www.php.net/ To unsubscribe, visit: http://www.php.net/unsub.php
RE: [PHP-DEV] Re: [PHP] Threading
would semaphores provide the mutual exclusion zone you need? dave -Original Message- From: Braulio José Solano Rojas [mailto:[EMAIL PROTECTED] Sent: Thursday, February 27, 2003 8:01 AM To: [EMAIL PROTECTED]; [EMAIL PROTECTED] Subject: Re: [PHP-DEV] Re: [PHP] Threading Hi! Rasmus Lerdorf [EMAIL PROTECTED] escribió en el mensaje news:[EMAIL PROTECTED] On Tue, 18 Feb 2003, Greg Donald wrote: On Tue, 18 Feb 2003, Bruce Miller wrote: Will PHP allow multiple-thread execution? PHP4 does not have thread support. Well, except for pear/PECL/threads, of course. Is this going to be standard in the future in PHP. I need a mutual exclusion zone in the extension I am writing. Is this possible other way? Best regards, Braulio -- 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
Re: [PHP-DEV] Re: [PHP] Threading
Hi! Dave Viner [EMAIL PROTECTED] escribió en el mensaje news:[EMAIL PROTECTED] would semaphores provide the mutual exclusion zone you need? I do not know yet, I should studie it, but it is likely so. Are there semaphores in PHP? Regards, Braulio -Original Message- From: Braulio José Solano Rojas [mailto:[EMAIL PROTECTED] Sent: Thursday, February 27, 2003 8:01 AM To: [EMAIL PROTECTED]; [EMAIL PROTECTED] Subject: Re: [PHP-DEV] Re: [PHP] Threading Hi! Rasmus Lerdorf [EMAIL PROTECTED] escribió en el mensaje news:[EMAIL PROTECTED] On Tue, 18 Feb 2003, Greg Donald wrote: On Tue, 18 Feb 2003, Bruce Miller wrote: Will PHP allow multiple-thread execution? PHP4 does not have thread support. Well, except for pear/PECL/threads, of course. Is this going to be standard in the future in PHP. I need a mutual exclusion zone in the extension I am writing. Is this possible other way? Best regards, Braulio -- 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
Re: [PHP-DEV] Re: [PHP] Threading
On Thursday, February 27, 2003, at 01:50 PM, Braulio JosX Solano Rojas wrote: Hi! Dave Viner [EMAIL PROTECTED] escribiÛ en el mensaje news:[EMAIL PROTECTED] would semaphores provide the mutual exclusion zone you need? I do not know yet, I should studie it, but it is likely so. Are there semaphores in PHP? Yes. I'd recommend a reading of the fine manual. 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. george -- PHP Development Mailing List http://www.php.net/ To unsubscribe, visit: http://www.php.net/unsub.php
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
Re: [PHP-DEV] Re: [PHP] Threading
At 20:12 27-2-2003, Braulio José Solano Rojas wrote: 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). You are? Well, then install it: http://www.neuro.gatech.edu/users/cwilson/cygutils/cygipc/index.html With kind regards, Melvyn Sopacua ?php include(not_reflecting_employers_views.txt); ? -- PHP Development Mailing List http://www.php.net/ To unsubscribe, visit: http://www.php.net/unsub.php
RE: [PHP-DEV] Re: [PHP] Threading
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
Re: [PHP-DEV] Re: [PHP] Threading
Hi! Rasmus Lerdorf [EMAIL PROTECTED] escribió en el mensaje news:[EMAIL PROTECTED] On Tue, 18 Feb 2003, Greg Donald wrote: On Tue, 18 Feb 2003, Bruce Miller wrote: Will PHP allow multiple-thread execution? PHP4 does not have thread support. Well, except for pear/PECL/threads, of course. Is this going to be standard in the future in PHP. I need a mutual exclusion zone in the extension I am writing. Is this possible other way? Best regards, Braulio -- PHP Development Mailing List http://www.php.net/ To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP-DEV] Re: [PHP] Threading
On Tue, 18 Feb 2003, Greg Donald wrote: On Tue, 18 Feb 2003, Bruce Miller wrote: Will PHP allow multiple-thread execution? PHP4 does not have thread support. Well, except for pear/PECL/threads, of course. -Rasmus -- PHP Development Mailing List http://www.php.net/ To unsubscribe, visit: http://www.php.net/unsub.php
[PHP-DEV] Re: [PHP] Threading
On Tue, 18 Feb 2003, Bruce Miller wrote: Will PHP allow multiple-thread execution? PHP4 does not have thread support. -- Greg Donald http://destiney.com -- PHP Development Mailing List http://www.php.net/ To unsubscribe, visit: http://www.php.net/unsub.php
