ID: 33249
Updated by: [EMAIL PROTECTED]
Reported By: s dot araya at numisys dot com dot ar
-Status: Open
+Status: Bogus
Bug Type: Math related
Operating System: Linux (Gentoo)
PHP Version: 5.0.3
New Comment:
Perhaps this explains the problem at hand:
http://www.swox.com/gmp/manual/Memory-Management.html
I tested for fun if a gmp_free() would make a difference.
And guess what? It has absolutely NO effect during runtime on the
memory consumption. So this is still no bug (in PHP).
Previous Comments:
[2005-06-07 13:43:20] s dot araya at numisys dot com dot ar
Also trying with:
unset( );
= Null;
didn't free memory neither call the garbage collector, and in every
function pass I've got an increment near to 1 MB of alloc'd RAM.
[2005-06-06 06:10:42] s dot araya at numisys dot com dot ar
> 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).
[2005-06-06 00:00:39] [EMAIL PROTECTED]
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( ) ) 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 = 100; $i++)
store_calc_value( $i );
function store_calc_value( $v )
{
$a = gmp_mul( $v, "0x1" );
$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