#33249 [Bgs]: GMP functions didn't free memory

ID: 33249 User updated by: s dot araya at numisys dot com dot ar Reported By: s dot araya at numisys dot com dot ar Status: Bogus Bug Type: Math related Operating System: Linux (Gentoo) PHP Version: 5.0.3 New Comment: > You can achieve similar thing with any other variable, > it's not GMP related at all. Due to the short answer I recieved, I can't understand what're you telling me... I use GMP functions 'cos I need to make more calculations that I've exposed on the example, which I can't achieve in 32 bits operations. I see that when I issue mysql_query( 'Select * from Table1 limit 0, 1000') I need to call mysql_free_result() to free memory used to store the result in memory. Consequently, with GMP functions which uses ZEND_REGISTER_RESOURCE macro in gmp.c (wrapper for GMP functions), I suppouse that the resource continue alloc'd, till a free() call releases it, according with system memory test (experienced with a simple «top» in Linux). Previous Comments: ------------------------------------------------------------------------ [2005-06-06 00:00:39] sniper@php.net Thank you for taking the time to write to us, but this is not a bug. Please double-check the documentation available at http://www.php.net/manual/ and the instructions on how to report a bug at http://bugs.php.net/how-to-report.php You can achieve similar thing with any other variable, it's not GMP related at all. ------------------------------------------------------------------------ [2005-06-05 18:15:48] s dot araya at numisys dot com dot ar Description: ------------ Hello, I'm using gmp library to perform a function which uses a few operations with large integer values. My script runs in console mode (at least four hours of processing), scanning a big mysql table and invoking the function to calculate big integer values that are stored in the table. But, in case the table has a lot of rows to process, the script halt with 'out of memory' error. Studying the problem I realized that GMP functions didn't free memory (when I issue unset( <resource> ) ) and continue allocate memory in every function pass. There is no gmp_free() in php manual. Is there any workaround to avoid the problem? Thank you, Sebastián Araya Numisys S.A. Reproduce code: --------------- for( $i = 0; $i = 1000000; $i++) store_calc_value( $i ); function store_calc_value( $v ) { $a = gmp_mul( $v, "0x100000000" ); $b = gmp_mul( $a, "0x1000" ); $sql = "Insert into t (big, value) Values ("; $sql.= gmp_strval( $a ) . ", " . gmp_strval( $b ) . ")"; mysql_query( $sql ); unset( $a ); // gmp_free( $a ); unset( $b ); // gmp_free( $b ); } Expected result: ---------------- I expect that memory has to be freed once returning from function store_calc_value(). A simple top command in another Linux session, tell me that php resource continue to grow. ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=33249&edit=1