apr_palloc return value?
Hi, when I use apr_palloc function to allocate memory, should I check the return value to make sure that I really got some memory? Is it possible that return value is NULL? Documentation about the apr_palloc at http://apr.apache.org/docs/apr/0.9/group__apr__pools.html says: Allocate a block of memory from a pool Parameters: p The pool to allocate from size The amount of memory to allocate Returns: The allocated memory The documentation does not say that it could return NULL... - JK
Re: apr_palloc return value?
On Wed, 8 Apr 2009 22:07:55 +0300 Juha Korhonen mahtav...@gmail.com wrote: Hi, when I use apr_palloc function to allocate memory, should I check the return value to make sure that I really got some memory? Yes. Sort-of. That is to say, yes you should, but it's common practice to omit the test, on the dubious grounds that if pool allocation fails, then your error handling is pretty-much going to fail for the same reason so it's pointless. With apr exploring entirely different allocators, that excuse looks ever more suspect. So, yes, you're right. -- Nick Kew Application Development with Apache - the Apache Modules Book http://www.apachetutor.org/
Re: apr_palloc return value?
On 04/08/2009 10:13 PM, Nick Kew wrote: On Wed, 8 Apr 2009 22:07:55 +0300 Juha Korhonenmahtav...@gmail.com wrote: Hi, when I use apr_palloc function to allocate memory, should I check the return value to make sure that I really got some memory? Yes. Sort-of. That is to say, yes you should, but it's common practice to omit the test, on the dubious grounds that if pool allocation fails, then your error handling is pretty-much going to fail for the same reason so it's pointless. Why? If I try to allocate 1GB of memory and that fails why is error handling pretty-much going to fail after that? There still could be 500MB of ram free which would probably be more than enough to handle such an error or is there anything fundamentally different compared to to a malloc all (other than that it uses a pool)? Regards, Dennis
