90d12fb340
override local default to -fstack-protector-strong
...
This is a no-op on a toolchain compiled with the basic mitigations
enabled by default, so this is generally a no-op anywhere this project
is likely to be deployed. SSP has a very low performance cost so there's
little reason to avoid it, even though it also has zero value for this
code in practice. It would be great if one of the more modern approaches
was widely adopted, but unfortunately SSP is as good as it gets for
portable options. It doesn't provide any protection against external
writes to the stack data which is all that's really needed here.
ShadowCallStack is a great option for arm64, but it's substantially more
difficult to protect return addresses well on x86_64 due to the design of
the ISA and ABI.
2019-07-19 11:53:55 -04:00
77743e5a36
use -fstack-clash-protection for completeness
...
This is a no-op for the current code and will likely remain that way so
there's no benefit but also no performance cost.
2019-07-19 11:18:49 -04:00
bb65d088dc
drop default class region size to 32GiB
2019-06-19 01:00:22 -04:00
5449f4a94e
use safe_flag for -fno-plt
...
This isn't supported by the ancient Clang release in Debian Stable.
2019-06-06 07:33:39 -04:00
6c31f6710a
support extended range of small size classes
2019-04-10 08:31:51 -04:00
1b34fd4a69
enable 4 arenas by default
2019-04-10 08:12:59 -04:00
cef7368b3c
disable unusable readability-magic-numbers lint
...
This wouldn't be worth using even if it had a whole bunch of heuristics
like ignoring expressions in static_assert, ignoring repeated patterns
like assigning different things to sequential array indexes, etc.
2019-04-09 00:58:06 -04:00
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
ef90f404a6
add sanity check for stats option
2019-04-07 09:06:03 -04:00
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
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
c5e911419d
add initial implementation of arenas
2019-03-25 14:59:50 -04:00
c8b948e202
enable C++17 support when available
2019-03-23 19:46:54 -04:00
8a474b647c
enable both forms of slab quarantines by default
2019-01-02 14:59:19 -05:00
ccc2a86501
rename quarantine size -> length for clarity
2019-01-02 14:17:02 -05:00
2d88b90282
reorder Makefile CONFIG variables
2018-12-09 11:03:12 -05:00
830a7d338d
make class_region_size configurable
2018-12-05 09:38:13 -05:00
79cf5cbeb4
disambiguate malloc.h
2018-12-05 07:59:35 -05:00
9fd0670aac
add lib prefix to the shared object name
2018-12-05 02:05:37 -05:00
f3623e1f2b
finish migration away from config.h
2018-11-16 15:40:45 -05:00
06149aa156
enable readability-else-after-return tidy check
2018-11-16 15:12:10 -05:00
a8112fc5c3
use -O3 instead of -O2 primarily for more inlining
2018-11-04 19:45:04 -05:00
505b9d2e76
add missing -Wl,--as-needed (removed by mistake)
2018-11-04 14:32:03 -05:00
1da51ddde1
migrate bool configuration options out of config.h
2018-11-02 21:35:09 -04:00
5bee717134
use -march=native by default with a disable toggle
2018-10-28 22:49:15 -04:00
9d1567ce16
make safe_flag check compatible with POSIX sh
2018-10-23 15:55:45 -04:00
05ac717cf2
work around -Wcast-align=strict error with old GCC
2018-10-23 07:23:07 -04:00
0b963078d5
guard metadata with Memory Protection Keys (MPK)
2018-10-23 01:11:31 -04:00
ac8c68de53
enable pointer cast warnings
2018-10-21 15:50:26 -04:00
173ed53539
use consistent code style in chacha.c
2018-10-19 17:09:41 -04:00
d728afae8e
add configuration option for testing with UBSan
2018-10-14 18:58:54 -04:00
3c0a448c3e
enable more tidy checks
2018-10-14 18:33:40 -04:00
118549451b
add tidy target to the Makefile for clang-tidy
2018-10-14 18:05:08 -04:00
fa2796a941
Makefile: add missing dependencies
2018-10-07 11:31:07 -04:00
3a936295f8
Makefile: split out shared compiler flags
2018-10-05 02:45:40 -04:00
e6e9ac1fc9
support replacing C++ new/delete implementation
...
This adds support for sanity checks based on sized deallocation and will
reduce the overhead of calls through the C++ allocator.
2018-10-05 02:11:29 -04:00
ef32a4b7ea
add -pipe to CFLAGS
2018-10-04 04:03:48 -04:00
49af83a817
wrap mutex type to enable future optimization
2018-09-07 01:13:08 -04:00
d398384b90
add header for configuration
2018-09-07 00:17:31 -04:00
7e088dc870
add stubs for Android extensions
2018-09-02 05:08:45 -04:00
2dd2471b4a
enable more linker sanity checks
2018-09-02 02:30:24 -04:00
39e81bd486
using -lpthread for linking isn't necessary
2018-09-02 02:13:23 -04:00
e4648192c0
split out code for managing page spans
2018-09-02 02:03:39 -04:00
99fcddc223
use much faster get_random_{type}_uniform approach
2018-08-30 02:08:05 -04:00
1c181557c7
add -fno-plt as an optimization
2018-08-29 15:20:56 -04:00
58d929c0f0
split out low-level memory mapping wrappers
2018-08-29 00:53:38 -04:00
0e2bc8a1cf
make sure RELRO is enabled on every toolchain
2018-08-28 11:44:23 -04:00
e72674e358
detect missing symbols when linking
2018-08-28 11:13:17 -04:00
c41e659383
use ChaCha8-based CSPRNG
2018-08-25 23:24:00 -04:00
70d61b6662
initial commit
2018-08-23 15:42:41 -04:00
Daniel Micay