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253 Commits

Author SHA1 Message Date
David Goldblatt
e09eac1d4e Remove hpa_central. 
This is now dead code.
 2021-07-23 21:59:59 -07:00
David Goldblatt
113938b6f4 HPA: Pull out a hooks type. 
For now, this is a no-op change.  In a subsequent commit, it will be useful for
testing.
 2021-07-12 17:59:18 -07:00
David Goldblatt
1d4a7666d5 HPA: Do deferred operations on background threads. 2021-07-12 17:59:18 -07:00
David Goldblatt
de033f56c0 mpsc_queue: Add module. 
This is a simple multi-producer, single-consumer queue.  The intended use case
is in the HPA, as we begin supporting hpdatas that move between hpa_shards.  We
take just a single CAS as the cost to send a message (or a batch of messages) in
the low-contention case, and lock-freedom lets us avoid some lock-ordering
issues.
 2021-06-24 14:55:49 -07:00
David Goldblatt
4452a4812f Add opt.experimental_infallible_new. 
This allows a guarantee that operator new never throws.

Fix the .gitignore rules to include test/integration/cpp while we're here.
 2021-06-24 12:22:51 -07:00
David Goldblatt
aea91b8c33 Clean up some minor data structure inconsistencies 
Namely, unify the include guard styling with the majority of the project, and do
flat_bitmap -> fb, to match its naming convention.
 2021-05-12 11:14:23 -07:00
Qi Wang
7dc77527ba Delete the mutex_pool module. 2021-03-29 17:19:53 -07:00
David Goldblatt
f47b4c2cd8 PAI/SEC: Add a dalloc_batch function. 
This lets the SEC flush all of its items in a single call, rather than flushing
everything at once.
 2021-02-19 15:10:54 -08:00
David Goldblatt
8edfc5b170 Add ticker_geom_t. 
This lets a single ticker object drive events across a large number of different
tick streams while sharing state.
 2021-02-04 14:10:43 -08:00
Yinan Zhang
40fa4d29d3 Track per size class internal fragmentation 2021-01-07 20:39:49 -08:00
David Goldblatt
d9f7e6c668 hpdata: Add a test. 
We're about to make the functionality here more complicated; testing hpdata
directly (rather than relying on user's tests) will make debugging easier.
 2020-12-07 06:21:08 -08:00
David Goldblatt
ca30b5db2b Introduce hpdata_t. 
Using an edata_t both for hugepages and the allocations within those hugepages
was convenient at first, but has outlived its usefulness.  Representing
hugepages explicitly, with their own data structure, will make future
development easier.
 2020-12-07 06:21:08 -08:00
David Goldblatt
ecd39418ac Add fxp: A fixed-point math library. 
This will be used in the next commit to allow non-integer values for
narenas_ratio.
 2020-12-04 23:48:19 -08:00
David Goldblatt
cf2549a149 Add a per-arena oversize_threshold. 
This can let manual arenas trade off memory and CPU the way auto arenas do.
 2020-11-13 13:45:35 -08:00
David Goldblatt
4ca3d91e96 Rename geom_grow -> exp_grow. 
This was promised in the review of the introduction of geom_grow, but would have
been painful to do there because of the series that introduced it.  Now that
those are comitted, renaming is easier.
 2020-11-13 13:42:33 -08:00
Qi Wang
bf72188f80 Allow opt.tcache_max to accept small size classes. 
Previously all the small size classes were cached.  However this has downsides
-- particularly when page size is greater than 4K (e.g. iOS), which will result
in much higher SMALL_MAXCLASS.

This change allows tcache_max to be set to lower values, to better control
resources taken by tcache.
 2020-10-24 20:43:44 -07:00
David Goldblatt
ea51e97bb8 Add SEC module: a small extent cache. 
This can be used to take pressure off a more centralized, worse-sharded
allocator without requiring a full break of the arena abstraction.
 2020-10-23 11:14:34 -07:00
David Goldblatt
1c7da33317 HPA: Tie components into a PAI implementation. 2020-10-23 11:14:34 -07:00
Qi Wang
3de19ba401 Eagerly detect double free and sized dealloc bugs for large sizes. 2020-10-15 10:03:16 -07:00
David Goldblatt
21b70cb540 Add hpa_central module 
This will be the centralized component of the coming hugepage allocator; the
source of larger chunks of memory from which smaller ones can be obtained.
 2020-10-05 19:55:57 -07:00
David Goldblatt
018b162d67 Add psset: a set of pageslabs. 
This introduces a new sort of edata_t; a pageslab, and a set to manage them.
This is part of a series of a commits to implement a hugepage allocator; the
pageset will be per-arena, and track small page allocations requests within a
larger extent allocated from a centralized hugepage allocator.
 2020-09-18 12:39:25 -07:00
David Goldblatt
131b1b5338 Rename ecache_grow -> geom_grow. 
We're about to start using it outside of the ecaches, in the HPA central
allocator.
 2020-08-19 16:53:21 -07:00
David Goldblatt
32d4673221 Add a mallctl speed stress test. 2020-08-13 10:03:15 -07:00
David Goldblatt
38867c5c17 Makefile: alphabetize stress/analyze utilities. 2020-08-13 10:03:15 -07:00
David Goldblatt
eaed1e39be Add sized-delete size-checking functionality. 
The existing checks are good at finding such issues (on tcache flush), but not
so good at pinpointing them.  Debug mode can find them, but sometimes debug mode
slows down a program so much that hard-to-hit bugs can take a long time to
crash.

This commit adds functionality to keep programs mostly on their fast paths,
while also checking every sized delete argument they get.
 2020-08-05 19:34:05 -07:00
David Goldblatt
81c2f841e5 Add a simple utility to detect profiling bias. 2020-08-05 18:33:55 -07:00
Yinan Zhang
e032a1a1de Add a stress test for batch allocation 2020-08-03 09:36:40 -07:00
Yinan Zhang
978f830ee3 Add batch allocation API 2020-07-31 09:16:50 -07:00
David Goldblatt
ceee823519 Add flat_bitmap. 
The flat_bitmap module offers an extended API, at the cost of decreased
performance in the case of very large bitmaps.
 2020-07-30 15:25:23 -07:00
David Goldblatt
7efcb946c4 PAC: Add an init function. 2020-07-09 13:41:04 -07:00
Yinan Zhang
03ae509f32 Create prof_sys module for reading system thread name 2020-06-29 14:27:50 -07:00
Yinan Zhang
5d292b5660 Push error handling logic out of core dumping logic 2020-06-29 14:27:50 -07:00
Yinan Zhang
d8cea87562 Move size inspections to test/analyze 2020-06-26 09:45:28 -07:00
Yinan Zhang
537a4bedb4 Add a tool to examine random number distributions 2020-06-26 09:45:28 -07:00
Yinan Zhang
d460333efb Improve naming for prof system thread name option 2020-06-24 14:32:01 -07:00
Yinan Zhang
092fcac0b4 Remove unnecessary source files 2020-06-19 12:15:44 -07:00
David Goldblatt
d82a164d0d Add thread.peak.[read|reset] mallctls. 
These can be used to track net allocator activity on a per-thread basis.
 2020-06-11 13:54:22 -07:00
David Goldblatt
fe7108305a Add peak_t, for tracking allocator net max. 2020-06-11 13:54:22 -07:00
David Goldblatt
17a64fe91c Add a small program to print data structure sizes. 2020-06-11 08:13:38 -07:00
David Goldblatt
97b7a9cf77 Add a fill/flush microbenchmark. 2020-05-16 13:34:23 -07:00
David Goldblatt
2c09d43494 Add a benchmark of large allocations. 2020-05-04 12:36:45 -07:00
David Goldblatt
26e9a3103d PA: Simple decay test. 2020-04-10 13:12:47 -07:00
David Goldblatt
f29f6090f5 PA: Add pa_extra.c and put PA forking there. 2020-04-10 13:12:47 -07:00
David Goldblatt
48a2cd6d79 Decay: Add a (mostly stub) test case. 2020-04-10 13:12:47 -07:00
David Goldblatt
bf55e58e63 Rename test/unit/decay -> test/unit/arena_decay. 
This is really more of an end-to-end test at the arena level; it's not just of
the decay code in particular any more.
 2020-04-10 13:12:47 -07:00
David Goldblatt
4d090d23f1 Decay: Introduce a stub .c file. 2020-04-10 13:12:47 -07:00
David Goldblatt
12be9f5727 Add a stub PA module -- a page allocator. 2020-04-10 13:12:47 -07:00
David T. Goldblatt
d936b46d3a Add malloc_conf_2_conf_harder 
This comes in handy when you're just a user of a canary system who wants to
change settings set by the configuration system itself.
 2020-03-31 06:25:08 -07:00
Yinan Zhang
2256ef8961 Add option to fetch system thread name on each prof sample 2020-03-24 21:39:57 -07:00
David Goldblatt
734109d9c2 Edata cache: add a unit test. 2020-03-12 11:58:09 -07:00