da6fd5b5ef
move slab allocator state to a dedicated mapping
2018-10-14 22:06:38 -04:00
1190966846
rename region_info to region_metadata
2018-10-14 22:06:38 -04:00
a083ff79e1
move region allocator state to a dedicated mapping
2018-10-14 22:06:33 -04:00
535466fdfd
avoid undefined shifts with multi-word bitmaps
2018-10-14 18:58:17 -04:00
7798b2693e
fix loop exit condition boundary for get_free_slot
2018-10-14 18:49:48 -04:00
9ea2fd6667
write_after_free_check only reads data
2018-10-14 18:30:20 -04:00
d35674c67e
expected_size is not an output parameter
2018-10-14 18:28:01 -04:00
4fbfe4d3ec
fix canary space reservation for pvalloc
2018-10-14 17:49:36 -04:00
f11c448a0d
slightly reorganize slab metadata
2018-10-14 15:13:06 -04:00
3db3e167ed
remove usage of ATOMIC_VAR_INIT
...
This was never truly required in practice and has been officially
obsoleted in C17.
2018-10-13 16:50:49 -04:00
65a7014b48
randomize free slabs reuse
2018-10-13 13:57:00 -04:00
83df37436d
fix usage of pthread_atfork for glibc < 2.28
2018-10-12 16:03:15 -04:00
6669166fe9
move memory_unmap outside of lock scope
2018-10-12 15:06:51 -04:00
b2007ad3d9
implement randomization for the region quarantine
2018-10-12 15:03:59 -04:00
ac2b940f0f
fix compatibility with older GCC versions
...
Avoid relying on compiler extensions supporting more flexible usage of
constants closer to how it works in C++.
2018-10-11 18:12:49 -04:00
ddcdd9423c
make the memory mapping quarantine more efficient
2018-10-09 14:13:59 -04:00
5fa6e01929
clearer name for MREMAP_MAYMOVE threshold
2018-10-08 17:18:13 -04:00
1a10c17e8b
add quarantine for large allocations
2018-10-08 16:14:07 -04:00
cc9699f1b4
use multi-word bitmap to support up to 256 slots
2018-10-07 18:50:06 -04:00
5e2f03296e
remove old debugging code
2018-10-07 16:18:17 -04:00
348f9fa557
add configuration for frequency of guard slabs
2018-10-06 15:36:03 -04:00
4ee12e64e0
configuration for guard region sizes
2018-10-06 15:17:55 -04:00
d18b05eaf4
avoid redundant checks for large realloc
2018-10-06 13:31:16 -04:00
eb7ced7781
implement in-place growth of large allocations
2018-10-06 13:24:22 -04:00
3dc49f8f73
slightly improve sized deallocation error messages
2018-10-05 01:06:12 -04:00
dcd969ae04
use a consistent style for fixed-size int types
...
The stdint.h types don't cover 128-bit integers and the underscore makes
them ill suited to usage in function suffixes. Instead, use the common
naming style in the Linux kernel and elsewhere including the ChaCha8
implementation included here.
2018-10-04 15:17:11 -04:00
642eed81c0
allow using larger guards on large allocations
2018-10-04 02:58:24 -04:00
5811bd184c
avoid unnecessary preprocessor use for canary mask
2018-10-03 17:17:20 -04:00
b24569b6ca
zero leading byte of canaries
2018-10-03 17:09:57 -04:00
cf449b3df4
add sized deallocation support
2018-09-19 13:05:12 -04:00
82314f4471
make get_size_info straightforward for zero size
2018-09-11 14:51:36 -04:00
7a404ddbf2
optimize size calculation for 16 byte spaced sizes
2018-09-11 14:46:44 -04:00
2d6ad18aa4
make function naming a bit more consistent
2018-09-11 14:18:13 -04:00
684291bf6a
avoid overhead of init check for slab deallocation
2018-09-11 14:13:43 -04:00
ef098fea06
simplify init function
2018-09-11 14:12:27 -04:00
61684925e8
fix overly naive slab allocation alignment support
2018-09-10 19:01:11 -04:00
9a1acce5eb
optimize calloc when zero on free is disabled
2018-09-07 16:33:28 -04:00
7ae7abedea
mark more unlikely code paths
2018-09-07 02:53:15 -04:00
49af83a817
wrap mutex type to enable future optimization
2018-09-07 01:13:08 -04:00
fc2473e7ee
add configuration for canaries
2018-09-07 00:35:08 -04:00
96c538d90f
add configuration for zero on free
2018-09-07 00:33:51 -04:00
ba3a8b0058
add slot randomization to configuration header
2018-09-07 00:25:02 -04:00
bed303a76f
remove unnecessary else branch
2018-09-07 00:22:51 -04:00
d398384b90
add header for configuration
2018-09-07 00:17:31 -04:00
99d68238d2
implement slab allocation write-after-free check
2018-09-07 00:00:32 -04:00
684e63a878
handle pthread_atfork calling into malloc
...
This results in compatibility with the malloc replacement support added
in musl 1.1.20.
2018-09-06 19:48:00 -04:00
1be74ec40d
add initial guard slabs implementation
2018-09-06 18:55:24 -04:00
cc1e79fdba
abstract metadata allocation to allow guard slabs
2018-09-06 18:45:41 -04:00
d8e18e0011
aligned_alloc is now the same as BSD memalign
...
The resolution to DR 460 (which is explicitly included in C17) removed
the requirement for the size to be a multiple of the alignment.
2018-09-06 16:30:22 -04:00
0d3c2e1988
no need for a dedicated init rng
2018-09-06 16:02:25 -04:00
Daniel Micay