deb8e62a83
Implement guard pages.
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Adding guarded extents, which are regular extents surrounded by guard pages
(mprotected). To reduce syscalls, small guarded extents are cached as a
separate eset in ecache, and decay through the dirty / muzzy / retained pipeline
as usual.
2021-09-26 16:30:15 -07:00
8b24cb8fdf
Don't assume initialized arena in the default alloc hook.
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Specifically, this change allows the default alloc hook to used during
arenas.create. One use case is to invoke the default alloc hook in a customized
hook arena, i.e. the default hooks can be read out of a default arena, then
create customized ones based on these hooks. Note that mixing the default with
customized hooks is not recommended, and should only be considered when the
customization is simple and straightforward.
2021-08-25 14:19:25 -07:00
3093d9455e
Move the edata mergeability related functions to extent.h.
2021-03-29 17:19:53 -07:00
add636596a
Stop checking head state in the merge hook.
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Now that all merging go through try_acquire_edata_neighbor, the mergeablility
checks (including head state checking) are done before reaching the merge hook.
In other words, merge hook will never be called if the head state doesn't agree.
2021-03-29 17:19:53 -07:00
70d1541c5b
Track extent is_head state in rtree leaf.
2021-03-29 17:19:53 -07:00
a4759a1911
Ehooks: avoid touching arena_emap_global in tests.
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That breaks our ability to test custom emaps in isolation.
2020-04-10 13:12:47 -07:00
294b276fc7
PA: Parameterize emap. Move emap_global to arena.
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This lets us test the PA module without interfering with the global emap used by
the real allocator (the one not under test).
2020-04-10 13:12:47 -07:00
7e6c8a7286
Emap: Standardize naming.
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Namespace everything under emap_, always specify what it is we're looking up
(emap_lookup -> emap_edata_lookup), and use "ctx" over "info".
2020-02-17 10:50:51 -08:00
9b5d105fc3
Emap: Move in iealloc.
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This is logically scoped to the emap.
2020-02-17 10:50:51 -08:00
ca1f082251
Disallow merge across mmap regions to preserve SN / first-fit.
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Check the is_head state before merging two extents. Disallow the merge if it's
crossing two separate mmap regions. This enforces first-fit (by not losing the
SN) at a very small cost.
2020-02-13 12:18:44 -08:00
a5d3dd4059
Fix an assertion on extent head state with dss.
2020-01-10 13:29:14 -08:00
6342da0970
Ehooks: Further optimize default merge case.
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This avoids the cost of an iealloc in cases where the user uses the default
merge hook without using the default extent hooks.
2019-12-20 10:18:40 -08:00
f2f2084e79
Ehooks: Assert alloc isn't NULL
2019-12-20 10:18:40 -08:00
57fe99d4be
Move relevant index into the ehooks_t itself.
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It's always passed into the ehooks; keeping it colocated lets us avoid passing
the arena everywhere.
2019-12-20 10:18:40 -08:00
0704516245
Ehooks: Add head tracking.
2019-12-20 10:18:40 -08:00
a7862df616
Rename extent_t to edata_t.
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This frees us up from the unfortunate extent/extent2 naming collision.
2019-12-20 10:18:40 -08:00
4b2e5ee8b9
Ehooks: Add a "zero" ehook.
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This is the first API expansion. It lets the hooks pick where and how to purge
within themselves.
2019-12-20 10:18:40 -08:00
39fdc690a0
Ehooks comments and cleanup.
2019-12-20 10:18:40 -08:00
c8dae890c8
Extent -> Ehooks: Move over default hooks.
2019-12-20 10:18:40 -08:00
2fe5108263
Extent -> Ehooks: Move merge hook.
2019-12-20 10:18:40 -08:00
1fff4d2ee3
Extent -> Ehooks: Move split hook.
2019-12-20 10:18:40 -08:00
a5b42a1a10
Extent -> Ehooks: Move purge_forced hook.
2019-12-20 10:18:40 -08:00
368baa42ef
Extent -> Ehooks: Move purge_lazy hook.
2019-12-20 10:18:40 -08:00
d78fe241ac
Extent -> Ehooks: Move commit and decommit hooks.
2019-12-20 10:18:40 -08:00
5459ec9dae
Extent -> Ehooks: Move destroy hook.
2019-12-20 10:18:40 -08:00
bac8e2e5a6
Extent -> Ehooks: Move dalloc hook.
2019-12-20 10:18:40 -08:00
dc8b4e6e13
Extent -> Ehooks: Move alloc hook.
2019-12-20 10:18:40 -08:00
ae0d8e8591
Move extent ehook calls into ehooks
2019-12-20 10:18:40 -08:00
ba8b9ecbcb
Add ehooks module
2019-12-20 10:18:40 -08:00
Qi Wang