Daniel Micay
295bfbde94
disable bugprone-too-small-loop-variable lint
...
This has too many false positives since it doesn't permit comparisons
against constants where the compiler can verify it doesn't overflow.
2019-04-09 00:55:16 -04:00
Daniel Micay
8b2b9d940a
chacha: use C99 variable declaration style
...
This further aligns the code style with the rest of the project and
fixes the clang-tidy readability-isolate-declaration lint triggered by
declaring all of these variables together.
2019-04-09 00:18:17 -04:00
Daniel Micay
9453332e57
remove redundant else block
2019-04-09 00:06:17 -04:00
Daniel Micay
922c741915
it already supports Bionic, musl and glibc
2019-04-07 18:13:26 -04:00
Daniel Micay
a4cff7a960
factor out slab memory_set_name into label_slab
2019-04-07 18:02:56 -04:00
Daniel Micay
ef90f404a6
add sanity check for stats option
2019-04-07 09:06:03 -04:00
Daniel Micay
e0891c8cfc
implement the option of large size classes
...
This extends the size class scheme used for slab allocations to large
allocations. This drastically improves performance for many real world
programs using incremental realloc growth instead of using proper growth
factors. There are 4 size classes for every doubling in size, resulting
in a worst case of ~20% extra virtual memory being reserved and a huge
increase in performance for pathological cases. For example, growing
from 4MiB to 8MiB by calling realloc in increments of 32 bytes will only
need to do work beyond looking up the size 4 times instead of 1024 times
with 4096 byte granularity.
2019-04-07 08:52:17 -04:00
Daniel Micay
7a7126e780
add infrastructure for a larger guard size option
2019-04-07 06:07:09 -04:00
Daniel Micay
c68de6141d
factor out duplicated code in malloc/realloc
2019-04-07 05:48:10 -04:00
Daniel Micay
ce36d0c826
split out allocate_large function
2019-04-07 05:44:09 -04:00
Daniel Micay
3d18fb8074
implement Android M_PURGE mallopt via malloc_trim
2019-04-07 03:35:26 -04:00
Daniel Micay
4f08e40fe5
move thread sealing implementation
2019-04-07 00:50:26 -04:00
Daniel Micay
55891357ff
clean up the exported API section of the code
2019-04-07 00:36:53 -04:00
Daniel Micay
0651c819e3
clarify hardened_malloc extensions section
2019-04-07 00:34:13 -04:00
Daniel Micay
491ce6b0b1
no need to provide valloc and pvalloc on Android
2019-04-07 00:31:09 -04:00
Daniel Micay
1eed432b9a
limit more glibc cruft to that environment
2019-04-07 00:30:05 -04:00
Daniel Micay
ec8fb347ed
document CONFIG_STATS
2019-04-07 00:10:22 -04:00
Daniel Micay
beaa39a5a3
move to only supporting current generation AOSP
2019-04-06 23:46:35 -04:00
Daniel Micay
27a4c883ce
extend stats with nmalloc and ndalloc
2019-04-06 23:19:03 -04:00
Daniel Micay
e94fe50a0d
include zero byte size class in stats
...
The allocations don't consume any actual memory, but it does still use
up the virtual memory assigned to the size class and requires metadata.
2019-04-06 22:43:56 -04:00
Daniel Micay
712748aaa8
add implementation of Android mallinfo extensions
...
These are used internally by Bionic to implement malloc_info.
2019-04-06 22:39:01 -04:00
Daniel Micay
0f107cd2a3
only provide malloc_info stub for glibc
...
This has a proper implementation in Bionic outside of the malloc
implementation via the extended mallinfo API.
2019-04-06 22:01:12 -04:00
Daniel Micay
350d0e5fd2
add real mallinfo implementation for Android
...
Android Q uses the mallinfo implementation in the ART GC:
c220f981801575267302
2019-04-06 20:54:26 -04:00
Daniel Micay
7acebaa837
overhaul glibc compatibility workarounds
2019-03-26 01:45:57 -04:00
Daniel Micay
df9650fe64
conditionally include threads.h
2019-03-26 01:28:27 -04:00
Daniel Micay
98deb9de52
relabel malloc read-only after init data
2019-03-25 20:34:10 -04:00
Daniel Micay
fc8f2c3b60
move pthread_atfork wrapper to util header
2019-03-25 17:16:52 -04:00
Daniel Micay
b5187a0aff
only use __register_atfork hack for old glibc
2019-03-25 17:16:22 -04:00
Daniel Micay
494cc5ec50
update README now that arenas are implemented
2019-03-25 16:18:01 -04:00
Daniel Micay
c5e911419d
add initial implementation of arenas
2019-03-25 14:59:50 -04:00
Daniel Micay
55769496dc
move hash_page to pages.h
2019-03-25 14:54:22 -04:00
Daniel Micay
13de480bde
rename quarantine bitmap field for clarity
2019-03-24 20:24:40 -04:00
Daniel Micay
3d142eb4c2
relabel large allocation guards when shrinking
2019-03-23 23:01:12 -04:00
Daniel Micay
64dfd23f7b
relabel purged slabs
2019-03-23 22:59:59 -04:00
Daniel Micay
178ec6e3f9
relabel quarantined large allocation regions
2019-03-23 22:57:19 -04:00
Daniel Micay
6e67106882
label malloc slab region gaps
2019-03-23 22:54:56 -04:00
Daniel Micay
1d62075291
label allocate_aligned_pages mappings
2019-03-23 22:29:04 -04:00
Daniel Micay
c8b948e202
enable C++17 support when available
2019-03-23 19:46:54 -04:00
Daniel Micay
a0ee5f445b
remove redundant extern "C" block
2019-03-23 13:41:12 -04:00
Daniel Micay
45337ebe07
label allocate_pages mappings
2019-03-22 23:17:38 -04:00
Daniel Micay
65311a5df2
relabel region table mapping
2019-03-22 21:59:44 -04:00
Daniel Micay
e4120913d6
only enable LABEL_MEMORY in debug builds
2019-03-20 14:25:09 -04:00
Daniel Micay
87acbcdf23
replace C++17 aligned allocation functions
2019-03-20 13:19:13 -04:00
Daniel Micay
ddd616aa0b
add documentation on system calls
2019-03-20 11:59:58 -04:00
Daniel Micay
4a000d96e2
pkey state is now preserved on fork for Linux 5.0+
...
This patch is going to be backported to stable kernels, so the check
could be expanded to allow recent enough stable kernel branches.
2019-03-20 11:05:31 -04:00
Daniel Micay
c9df70d934
add support for labelling memory regions
2019-02-13 13:34:33 -05:00
Daniel Micay
ae96835b94
fix scalability header levels
2019-02-04 15:59:14 -05:00
Daniel Micay
e4061899aa
add documentation on scalability design choices
2019-02-04 15:01:15 -05:00
Daniel Micay
41df5005e8
add a top-level header to the README
2019-02-04 13:59:19 -05:00
Daniel Micay
9cc0ac3efa
add basic documentation on memory tagging approach
2019-02-04 11:58:28 -05:00
