Daniel Micay
1e5dec97e0
move slab allocator state into main state region
2018-10-15 14:58:22 -04:00
Daniel Micay
e8eca2d430
explain the production-oriented design rationale
2018-10-15 04:07:20 -04:00
Daniel Micay
fde9fc2ece
protect region allocator state with random guards
2018-10-14 22:41:17 -04:00
Daniel Micay
124d958da1
document free slabs quarantine
2018-10-14 22:19:10 -04:00
Daniel Micay
3504465584
document progress on protected allocator state
2018-10-14 22:15:48 -04:00
Daniel Micay
da6fd5b5ef
move slab allocator state to a dedicated mapping
2018-10-14 22:06:38 -04:00
Daniel Micay
1190966846
rename region_info to region_metadata
2018-10-14 22:06:38 -04:00
Daniel Micay
a083ff79e1
move region allocator state to a dedicated mapping
2018-10-14 22:06:33 -04:00
Daniel Micay
d728afae8e
add configuration option for testing with UBSan
2018-10-14 18:58:54 -04:00
Daniel Micay
535466fdfd
avoid undefined shifts with multi-word bitmaps
2018-10-14 18:58:17 -04:00
Daniel Micay
7798b2693e
fix loop exit condition boundary for get_free_slot
2018-10-14 18:49:48 -04:00
Daniel Micay
3c0a448c3e
enable more tidy checks
2018-10-14 18:33:40 -04:00
Daniel Micay
9ea2fd6667
write_after_free_check only reads data
2018-10-14 18:30:20 -04:00
Daniel Micay
d35674c67e
expected_size is not an output parameter
2018-10-14 18:28:01 -04:00
Daniel Micay
8b033c5e44
make ALIGNMENT_CEILING into a function
2018-10-14 18:23:42 -04:00
Daniel Micay
118549451b
add tidy target to the Makefile for clang-tidy
2018-10-14 18:05:08 -04:00
Daniel Micay
b66ca56ba1
initialize ptr to nullptr in handle_out_of_memory
...
It will break out of the loop in the first iteration if there's no
handler or the handler throws an out-of-memory error.
2018-10-14 18:00:55 -04:00
Daniel Micay
4fbfe4d3ec
fix canary space reservation for pvalloc
2018-10-14 17:49:36 -04:00
Daniel Micay
f11c448a0d
slightly reorganize slab metadata
2018-10-14 15:13:06 -04:00
Daniel Micay
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
Daniel Micay
65a7014b48
randomize free slabs reuse
2018-10-13 13:57:00 -04:00
Daniel Micay
83df37436d
fix usage of pthread_atfork for glibc < 2.28
2018-10-12 16:03:15 -04:00
Daniel Micay
0a64c7d6a1
document the randomized array in the quarantine
2018-10-12 15:10:35 -04:00
Daniel Micay
6669166fe9
move memory_unmap outside of lock scope
2018-10-12 15:06:51 -04:00
Daniel Micay
b2007ad3d9
implement randomization for the region quarantine
2018-10-12 15:03:59 -04:00
Daniel Micay
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
Daniel Micay
e47c783524
add test for delete size mismatch
2018-10-11 01:45:47 -04:00
Daniel Micay
7606bf4c1f
clean up includes in new.cc
2018-10-11 01:35:25 -04:00
Daniel Micay
54c78fe1c2
distinguish between mmap / mremap errors
2018-10-10 19:05:35 -04:00
Daniel Micay
2381d973b1
expand on metadata address space security
2018-10-10 18:55:31 -04:00
Daniel Micay
29fd86ab37
document sized deallocation validation
2018-10-10 18:49:17 -04:00
Daniel Micay
c74fe56091
minor include style fix
2018-10-10 18:19:56 -04:00
Daniel Micay
ddcdd9423c
make the memory mapping quarantine more efficient
2018-10-09 14:13:59 -04:00
Daniel Micay
57d5ab769b
add write-after-free tests with potential reuse
2018-10-08 17:41:06 -04:00
Daniel Micay
5fa6e01929
clearer name for MREMAP_MAYMOVE threshold
2018-10-08 17:18:13 -04:00
Daniel Micay
1a10c17e8b
add quarantine for large allocations
2018-10-08 16:14:07 -04:00
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
fa2796a941
Makefile: add missing dependencies
2018-10-07 11:31:07 -04:00
Daniel Micay
cf07ae6007
update configuration in README
2018-10-06 15:38:09 -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
3a936295f8
Makefile: split out shared compiler flags
2018-10-05 02:45:40 -04:00
Daniel Micay
4716ff5b92
explicitly export C++ allocator overrides
...
This doesn't make any difference for GCC, but these aren't replaced
outside of the library with Clang without explicitly exporting them.
2018-10-05 02:23:49 -04:00
Daniel Micay
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
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
92a33182fb
port chacha.h to the code style used elsewhere
2018-10-04 04:13:28 -04:00
