Re: [PHP-DEV] sapi/servlet configuration error
Sebastian Bergmann wrote: Ray Hunter wrote: Does anyone have an idea about what i need to do to fix this? I just tested sapi/servlet with Tomcat 4.1.12 on Windows and the segfaults I experienced prior to the Tony's patch are still there: An unexpected exception has been detected in native code outside the VM. Unexpected Signal : EXCEPTION_ACCESS_VIOLATION occurred at PC=0xC34AB15 Function=zend_startup_module+0xD5 Library=E:\home\php\php4\Release_TS_inline\php4ts.dll Current Java thread: at net.php.servlet.startup(Native Method) at net.php.servlet.init(servlet.java:156) I have the same problem under Linux. Akos -- PHP Development Mailing List http://www.php.net/ To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP-DEV] persistent java virtual machine under PHP
Tony J. White wrote: After reviewing the thread, I think the problem you are experiencing is related to the fact that each instance of PHP is running a seperate JVM. It's not that the JVM is being destroyed. Therefore when you have apache running with say 5 httpd children, you will be running 5 seperate JVM's each with it's own environment. So if you tried to keep a Java variable active from request to request, it would disappear once your apache KeepAliveTimeout was up. Does that sound about right? well, I traced it and _never_ saw a call to jvm_destroy() in the java extension code. -- PHP Development Mailing List http://www.php.net/ To unsubscribe, visit: http://www.php.net/unsub.php
[PHP-DEV] Re: persistent java virtual machine under PHP
Ivan Ristic wrote: How is a persistent database connection handled then? e.g. in the mysql module? Apache 1.x pre-creates a number of server processes. Each process handles a certain number of requests (one at a time), and then dies. It is then replaced with an another server process. The number of processes can vary depending on the load and the configuration. Database connections (and other resources) are persistent on the per-server-process level. What this means that an open connection in one server process cannot be reused from within another server process. I see. This is sad news indeed. But is this really a closest one can get with apache? None of the other extension libraries for apache, like nsapi, provides the notion of persistent resources shared among all apache requestst? Akos -- PHP Development Mailing List http://www.php.net/ To unsubscribe, visit: http://www.php.net/unsub.php
[PHP-DEV] Re: persistent java virtual machine under PHP
Ivan Ristic wrote: No, I have been told (by someone, I do not remember) that if you use PHP as a servlet ext/java would use the same JVM. I haven't check to see whether that is correct. sound good, I'll take a look. Akos -- PHP Development Mailing List http://www.php.net/ To unsubscribe, visit: http://www.php.net/unsub.php
[PHP-DEV] Re: persistent java virtual machine under PHP
Ivan Ristic wrote: No, I have been told (by someone, I do not remember) that if you use PHP as a servlet ext/java would use the same JVM. I haven't check to see whether that is correct. My experiences: using php-4.2.3, calling plain php pages from Tomcat seem to be OK. But when calling java code from within the PHP code, I get a native mode exception: Unexpected Signal : 11 occurred at PC=0x4DAD935E Function=zend_hash_index_update_or_next_insert+0x3A Library=/.../php-4.2.3/libs/libphp4.so Current Java thread: at net.php.reflect.setResultFromObject(Native Method) at net.php.reflect.setResult(reflect.java:105) at net.php.servlet.readCookies(servlet.java:92) at net.php.servlet.send(Native Method) at net.php.servlet.service(servlet.java:188) at net.php.servlet.service(servlet.java:212) at javax.servlet.http.HttpServlet.service(HttpServlet.java:853) I also tried the CVS version, but I can't even compile it: /.../php4/sapi/servlet/servlet.c: In function Java_net_php_servlet_startup': /.../php4/sapi/servlet/servlet.c:261: warning: passing arg 2 of `php_module_startup' from incompatible pointer type make: *** No rule to make target `sapi/servlet/java.c', needed by `sapi/servlet/java.lo'. Stop. What java.c is expected here? The same as in ext/java ? Akos -- PHP Development Mailing List http://www.php.net/ To unsubscribe, visit: http://www.php.net/unsub.php
[PHP-DEV] Re: persistent java virtual machine under PHP
Ivan Ristic wrote: I do not think that is possible, unless PHP engine itself is contained within a single process (and runs multithreaded). Which it isn't (under Apache 1.x , at least). I'm not familiar in general with the PHP engine, so my questions may be quite stupid. Anyway: How is a persistent database connection handled then? e.g. in the mysql module? looking at the mysql module source code, it seems that there is a list called persistent_list, used in such a manner: zend_hash_find(EG(persistent_list), hashed_details, hashed_details_length+1, (void **) le would this provide some persistnece? If yes, how to use it exaclty? (I couldn't make it work myself.) It seems to me that libphp_java.so is unloaded every once in a while. For example, global static variable defined in the module get re-initialized every once in a while. Is this so? I can't see a call to JNI_DestroyJavaVM() anywhere in the java module source code. Isn't this a possible reason for resource leaks? Or are modules that cleverly unloaded? Akos -- PHP Development Mailing List http://www.php.net/ To unsubscribe, visit: http://www.php.net/unsub.php
