how can I check whether any given address was allocated by jemalloc?

Mon Nov 16 07:59:35 PST 2015

On Nov 16, 2015, at 1:10 AM, 吴降龙 <magickid2001 at 163.com <mailto:magickid2001 at 163.com>> wrote:
> How can I check whether any given address was allocated by jemalloc? Is that possible?

If you configure with --enable-ivsalloc, malloc_usable_size() and sallocx() will return 0 for addresses not managed by jemalloc.  Without --enable-ivsalloc, these functions have undefined behavior (crashes are common) for addresses not managed by jemalloc.

Jason
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