Re: malloc/free question

On 01 Dec 2005 11:09:06 -0600, joe@xxxxxxxxxxxxxxx <joe@xxxxxxxxxxxxxxx> wrote:
> brk() is used to get memory from the OS, not give it back. Normally,
> free() puts the memory being released back onto th free list, so it
> can be allocated again without a system call.

Actually, brk() can be used (on some systems, at least) for both,
so free() may use it to release memory to the OS when appropriate.
Which is not necessarily often due to fragmentation.

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Mikko Rauhala - mjr@xxxxxx - <URL:http://www.iki.fi/mjr/>
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