Daniel Micay
cc9699f1b4
use multi-word bitmap to support up to 256 slots
2018-10-07 18:50:06 -04:00
Daniel Micay
5e2f03296e
remove old debugging code
2018-10-07 16:18:17 -04:00
Daniel Micay
348f9fa557
add configuration for frequency of guard slabs
2018-10-06 15:36:03 -04:00
Daniel Micay
4ee12e64e0
configuration for guard region sizes
2018-10-06 15:17:55 -04:00
Daniel Micay
d18b05eaf4
avoid redundant checks for large realloc
2018-10-06 13:31:16 -04:00
Daniel Micay
eb7ced7781
implement in-place growth of large allocations
2018-10-06 13:24:22 -04:00
Daniel Micay
3dc49f8f73
slightly improve sized deallocation error messages
2018-10-05 01:06:12 -04:00
Daniel Micay
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
Daniel Micay
642eed81c0
allow using larger guards on large allocations
2018-10-04 02:58:24 -04:00
Daniel Micay
5811bd184c
avoid unnecessary preprocessor use for canary mask
2018-10-03 17:17:20 -04:00
Daniel Micay
b24569b6ca
zero leading byte of canaries
2018-10-03 17:09:57 -04:00
Daniel Micay
cf449b3df4
add sized deallocation support
2018-09-19 13:05:12 -04:00
Daniel Micay
82314f4471
make get_size_info straightforward for zero size
2018-09-11 14:51:36 -04:00
Daniel Micay
7a404ddbf2
optimize size calculation for 16 byte spaced sizes
2018-09-11 14:46:44 -04:00
Daniel Micay
2d6ad18aa4
make function naming a bit more consistent
2018-09-11 14:18:13 -04:00
Daniel Micay
684291bf6a
avoid overhead of init check for slab deallocation
2018-09-11 14:13:43 -04:00
Daniel Micay
ef098fea06
simplify init function
2018-09-11 14:12:27 -04:00
Daniel Micay
61684925e8
fix overly naive slab allocation alignment support
2018-09-10 19:01:11 -04:00
Daniel Micay
9a1acce5eb
optimize calloc when zero on free is disabled
2018-09-07 16:33:28 -04:00
Daniel Micay
7ae7abedea
mark more unlikely code paths
2018-09-07 02:53:15 -04:00
Daniel Micay
49af83a817
wrap mutex type to enable future optimization
2018-09-07 01:13:08 -04:00
Daniel Micay
fc2473e7ee
add configuration for canaries
2018-09-07 00:35:08 -04:00
Daniel Micay
96c538d90f
add configuration for zero on free
2018-09-07 00:33:51 -04:00
Daniel Micay
ba3a8b0058
add slot randomization to configuration header
2018-09-07 00:25:02 -04:00
Daniel Micay
bed303a76f
remove unnecessary else branch
2018-09-07 00:22:51 -04:00
Daniel Micay
d398384b90
add header for configuration
2018-09-07 00:17:31 -04:00
Daniel Micay
99d68238d2
implement slab allocation write-after-free check
2018-09-07 00:00:32 -04:00
Daniel Micay
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
Daniel Micay
1be74ec40d
add initial guard slabs implementation
2018-09-06 18:55:24 -04:00
Daniel Micay
cc1e79fdba
abstract metadata allocation to allow guard slabs
2018-09-06 18:45:41 -04:00
Daniel Micay
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
Daniel Micay
0d3c2e1988
no need for a dedicated init rng
2018-09-06 16:02:25 -04:00
Daniel Micay
8624201f06
refresh canary value when allocating free slabs
2018-09-06 15:07:01 -04:00
Daniel Micay
a875951e82
fix build with musl
2018-09-06 14:35:08 -04:00
Daniel Micay
e891b40588
implement Android malloc_disable/malloc_enable API
2018-09-06 14:17:23 -04:00
Daniel Micay
3a532b17dc
implement in-place shrinking for large allocations
2018-09-05 07:37:26 -04:00
Daniel Micay
645209dcbf
remove unnecessary debugging code
2018-09-05 03:42:05 -04:00
Daniel Micay
9ddd53d56c
implement initial slab allocation canaries
2018-09-04 09:29:35 -04:00
Daniel Micay
1a7b8079d0
reuse is_init when possible
2018-09-02 19:58:57 -04:00
Daniel Micay
7733047c7b
trigger early initialization in a conservative way
2018-09-02 19:52:12 -04:00
Daniel Micay
7e088dc870
add stubs for Android extensions
2018-09-02 05:08:45 -04:00
Daniel Micay
e4648192c0
split out code for managing page spans
2018-09-02 02:03:39 -04:00
Daniel Micay
e93d039214
only use reserved memory for regions hash table
2018-09-01 10:23:06 -04:00
Daniel Micay
c3a4829d77
remove unnecessary special case from realloc
2018-09-01 02:42:33 -04:00
Daniel Micay
f441dfe2e3
align size class metadata to cacheline size
2018-08-31 23:10:26 -04:00
Daniel Micay
fad10ce943
use FIFO queue for free slabs
2018-08-31 22:55:49 -04:00
Daniel Micay
3f80895822
ignore pad argument to malloc_trim per glibc
...
The pad argument is only used by the main arena for sbrk in glibc, with
every other page size gap purged with MADV_DONTNEED. It makes more sense
to simply treat it as an ignored legacy parameter rather than trying to
come up with a sensible way to use it for keeping cached free slabs.
2018-08-30 09:36:46 -04:00
Daniel Micay
1ea997b887
add missing headers to malloc.h
2018-08-30 08:48:43 -04:00
Daniel Micay
2b0f7aa985
use a consistent name for size class integer index
2018-08-30 07:13:28 -04:00
Daniel Micay
0f5f2bf6c9
add basic initial heuristic for freeing slabs
2018-08-30 06:56:00 -04:00
