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
918f0d3302
improve write-after-free tests
2018-09-06 23:50:49 -04:00
Daniel Micay
3751b85e47
document minimum musl version for external use
2018-09-06 19:52:09 -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
bf55fad6d0
document that slab canaries are implemented
2018-09-05 00:19:27 -04:00
Daniel Micay
9ddd53d56c
implement initial slab allocation canaries
2018-09-04 09:29:35 -04:00
Daniel Micay
5017500a47
add simple overflow tests
2018-09-04 09:15:23 -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
2ec65306dd
expand documentation on supported environments
2018-09-02 06:05:37 -04:00
Daniel Micay
8bb686e697
add missing prefix defines
2018-09-02 05:24:25 -04:00
Daniel Micay
9c74a67068
malloc_get_state/malloc_set_state are obsolete too
2018-09-02 05:20:17 -04:00
Daniel Micay
7e088dc870
add stubs for Android extensions
2018-09-02 05:08:45 -04:00
Daniel Micay
2dd2471b4a
enable more linker sanity checks
2018-09-02 02:30:24 -04:00
Daniel Micay
39e81bd486
using -lpthread for linking isn't necessary
2018-09-02 02:13:23 -04:00
Daniel Micay
89c624b755
mark page management error code paths as unlikely
2018-09-02 02:08:44 -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
dba330fde7
expand documentation in the README
2018-08-30 11:12:43 -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
af393afc09
make preload script for testing a bit more robust
2018-08-30 09:08:33 -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
Daniel Micay
456dfe4154
add support for purging and protecting empty slabs
2018-08-30 05:59:44 -04:00
Daniel Micay
bb176e09bc
remove useless code in the empty_slabs path
2018-08-30 05:45:03 -04:00
Daniel Micay
29df2429c2
empty_slabs will remain a singly-linked list
2018-08-30 05:27:51 -04:00
Daniel Micay
f94068ea63
rename free_slabs to empty_slabs
2018-08-30 04:55:39 -04:00
Daniel Micay
b6d4af872f
move libdivide.h to third_party/libdivide.h
2018-08-30 03:03:19 -04:00
Daniel Micay
99fcddc223
use much faster get_random_{type}_uniform approach
2018-08-30 02:08:05 -04:00
Daniel Micay
1c181557c7
add -fno-plt as an optimization
2018-08-29 15:20:56 -04:00
Daniel Micay
6f9de3e667
add inline hint to get_size_info
2018-08-29 15:13:53 -04:00
Daniel Micay
e85c69a0a4
fix builds with prefix
2018-08-29 15:07:36 -04:00
Daniel Micay
becadc57a5
get rid of unused MIN_ALIGN definition
2018-08-29 14:18:45 -04:00
Daniel Micay
2684a98eab
add initial malloc_object_size extensions
2018-08-29 14:18:42 -04:00
Daniel Micay
00b2613e16
add mmap MAP_FIXED wrapper for dropping slabs
2018-08-29 13:04:52 -04:00
Daniel Micay
0e2f3d1015
sanity check page size at runtime
2018-08-29 11:00:18 -04:00
