[Adding jemalloc-discuss group]
On Thursday, 17 July 2014 4:29 PM, shireesh bhat <[email protected]>
wrote:
Hi Jason,
Suppose I have an arena_chunk and the map has the following information
map[0].bits = 0x3ff8
map[1].bits = 0x2ff8
map[2].bits = 0x3ff8
map[3].bits = 0x149
0x149 = 101001001
In this example
Only map[3] points to an allocated page and it is a small allocation and the
bin index is 0x14 but I don't have any page offset. This is the case with many
small allocations and I don't have any page offset.
Since I am running on a 32 bit machine, I use the following layout mentioned in
the explanation of arena_chunk_map_s
???????? ???????? ????nnnn nnnndula
Can you please tell me If I am missing something very basic.
Regards,
Shireesh
On Thursday, 17 July 2014 3:31 PM, Jason Evans <[email protected]> wrote:
On Jul 17, 2014, at 11:28 AM, shireesh bhat <[email protected]> wrote:
Even if I find out the page's offset how do I find the address of arena_run_t,
since I just know the mapping information for every page which is present in
arena_chunk_t.
Take a close look at the header comments for struct arena_chunk_map_s. The
information is in the chunk's page map, which it sounds like you've already
figured out how to access.
Jason
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