Date: Mon, 27 Mar 2017 15:27:31 +0200 From: Alexander Tarasikov <alexander.tarasikov@gmail.com> To: Slawa Olhovchenkov <slw@zxy.spb.ru> Cc: freebsd-hackers@freebsd.org Subject: Re: jmalloc in shared memory Message-ID: <CAMChaFw2Z0zQ5mBgCGxt4Yigjaa-i5oTFJFgDtGHOy6t_DXcnw@mail.gmail.com> In-Reply-To: <20170320131235.GB86500@zxy.spb.ru> References: <20170320131235.GB86500@zxy.spb.ru>
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Hi Slawa,
I'm not sure jemalloc is supposed to be used this way, but you should
be able to achieve this functionality in two ways:
1. Editing jemalloc's allocator ("src/pages.c") to allocate in your
region instead of calling mmap()
2. Hook mmap() and brk(), sbrk() with LD_PRELOAD and provide
implementations that will allocate in the shared memory
Hope this helps.
On Mon, Mar 20, 2017 at 2:12 PM, Slawa Olhovchenkov <slw@zxy.spb.ru> wrote:
> How I can use jmalloc in shared memory?
>
> I.e. parent process do mmap w/ MAP_ANON|MAP_SHARED, create jmalloc
> "instance" in this memory and use jmalloc routines for memory management
> in this region.
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--
Regards, Alexander
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