Re: request for thread safety advice

nice for that would be some macros (somewhere in zend????) which help in the following way (the ext_skel should generate the code, too): a) define a global library identifier (for all blocks that should not run at the same time)

        zend_create_mutex(identifier)

b) use some code like:

        zend_start_synchronized(identifier) {
                ...
                ...
        } zend_end_synchronized(identifier);

(Same construct like zend_try). Without ZTS this macros should be empty... As I am the developer of the NSAPI SAPI (which runs only with ZTS) I would like to have a GD extension where alle PHP_FUNCTIONs exported from there should have such Java-like "synchronized" blocks. Uwe At 00:10 21.10.2003, you wrote:

If the library you are wrapping is not threadsafe, one approach is to simply not worry about it and just mark your extension as not being safe to use in a threaded environment. The majority of people use PHP in a non-threaded environment anyway. If you want to be nice to the folks who do use PHP in a threaded environment, you can look into adding a semaphore lock around the calls into the code that is not threadsafe. Such a semaphore lock makes sure that only 1 thread at a time can enter the code. Other threads sit around and wait until it is their turn. -Rasmus On Mon, 20 Oct 2003, netcat wrote: Hi, internals. Please send me (post here i mean) a few links about 1. thread safety in general 2. thread saftey in php 3. I'm doing wrapper for librep wich is not thread safe (so mailing archives say). Do I need to know something special ? After doing some googling i found thise for #1 http://www.unix.org/version2/whatsnew/threads.html http://www.unix.org/version2/whatsnew/threadsref.html is that a good reading ? any better suggestions for google requests than thise : c thread safety -mail -archive -lists c thread safety tutor ? I couldn't find anything for #2 but it's not less important than #1 :) -- PHP Internals - PHP Runtime Development Mailing List To unsubscribe, visit: http://www.php.net/unsub.php

----- Uwe Schindler thetaphi@php.net - http://www.php.net NSAPI SAPI developer Erlangen, Germany