Cheri-research/snmalloc
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255 Commits

Author SHA1 Message Date
David Chisnall
d56201e28d Add type confusion protection to the default memory provider. 2019-08-13 17:30:37 +01:00
David Chisnall
6dbe24da2e [NFC] Replace HEADER_GLOBAL with inline (C++17). 
HEADER_GLOBAL was using non-standard attributes to achieve what C++17
now permits with a keyword.  Use the standard formulation.

Update the README to note that gcc is still not recommended, but because
of its poor codegen for 128-bit atomic compare and exchange, rather than
because it doesn't support the attribute used for HEADER_GLOBAL.
 2019-08-13 17:30:37 +01:00
David Chisnall
bbf016bac8 Merge pull request #84 from microsoft/bug-fix 
Bug fix
 2019-08-13 16:57:21 +01:00
Matthew Parkinson
e9432fe9ca Shrink reserve as failing in CI. 2019-08-13 16:31:41 +01:00
Matthew Parkinson
16b084f501 Changed abort behaviour for Windows CI. 2019-08-13 15:37:54 +01:00
David Chisnall
d2dc653af2 Make the pagemap global typed. 
The pagemap global is now an inline static of a template class, so that
we will see different symbols for the different types.

Issue #84 showed that it's possible to compile two compilation units
with different pagemaps, link them together, and have them attempt to
interpret the global pagemap as two different types.  This change should
make that impossible.

Also make the `pagemap()` function static so that it can be used from
static functions, avoiding other things that directly reference the
global pagemap.
 2019-08-13 14:24:50 +01:00
Matthew Parkinson
dd3feb948c Deal with wrap around in statistics. 2019-08-13 13:43:20 +01:00
Matthew Parkinson
bef2fb94d8 Clangformat 2019-08-13 13:27:33 +01:00
Matthew Parkinson
f545c1c790 Test for debug_check_emtpy. 2019-08-13 13:04:29 +01:00
Matthew Parkinson
e6b4efd980 Don't apply changes to GlobalPlaceholder. 2019-08-13 13:04:29 +01:00
Matthew Parkinson
cbb1063e82 Fix up checking for empty to account for stub messages. 2019-08-13 13:03:06 +01:00
Matthew Parkinson
6151b7a9b2 Make test_realloc not leak in failure case. 2019-08-13 13:03:06 +01:00
Matthew Parkinson
a32882cd55 Make malloc functional test check for leaks. 2019-08-13 13:03:06 +01:00
David Chisnall
b1e4146239 Remove leftover (incorrect) conditional compilation. 2019-08-01 15:31:21 +01:00
David Chisnall
84140722fa Fix typo in NetBSD PAL. 2019-08-01 14:57:15 +01:00
David Chisnall
d24ad45abe [NFC] clangformat. 2019-08-01 12:03:35 +01:00
David Chisnall
81a0f0aed8 [NFC] Remove one more unneeded include. 2019-08-01 11:50:35 +01:00
David Chisnall
d11f09e4ec [NFC] Remove incorrect guard and some unused includes. 2019-08-01 11:50:27 +01:00
David Chisnall
896cc9cf6f [NFC] Rename some PALs to make the naming more consistent. 2019-08-01 11:44:09 +01:00
David Chisnall
2b44b6b5ea Add a NetBSD PAL. 
Currently untested, but identical to the FreeBSD one so should work...
The NetBSD man pages for `madvise` and `mmap` mention the flags that we
use.
 2019-08-01 11:41:08 +01:00
David Chisnall
fd88b8464b [NFC] Separate out support for aligned allocation from the FreeBSD PAL. 
NetBSD also supports `MAP_ALIGNED()` in `mmap` (according to the man
page, at least).
 2019-08-01 11:39:26 +01:00
David Chisnall
cf6fca6514 [NFC] Make the Apple PAL use the generic BSD code. 2019-08-01 11:21:32 +01:00
David Chisnall
54cbf8b2bb [NFC] Remove unused headers from OpenBSD PAL. 2019-08-01 11:21:28 +01:00
David Chisnall
0497993d23 Fix typo in OpenBSD PAL. 2019-08-01 11:20:05 +01:00
David Chisnall
d257f60731 [NFC] Add missing doc comments. 2019-08-01 11:03:22 +01:00
David Chisnall
4ed15def79 [NFC] Remove some code duplication in the PALs. 
Pull out a generic POSIX PAL as a superclass for the Linux and generic
BSD PALs.  Now we have FreeBSD and Linux adding OS-specific behaviour,
OpenBSD as a named subclass of the generic BSD PAL that doesn't add any
behaviour.

I believe a NetBSD PAL should now be identical to the OpenBSD one -
patches welcome if anyone wants to test one!
 2019-08-01 10:56:13 +01:00
David Carlier
fdae3b451f Creating base class instead used by both platforms. 2019-07-31 10:27:35 +00:00
David Carlier
6b4ff3e7ab Basic OpenBSD backend support. 
Cannot enforce alignment so we just check its correctness.
 2019-07-30 20:58:38 +01:00
Paul Liétar
b2b86565db Use get_noncachable in malloc/new overrides. 
This may return the GlobalPlaceholder, in which case the slow path will
be used, initializing the real thread local allocator.
 2019-07-17 15:41:45 +01:00
Paul Liétar
7047cda8ed Fix warning about shadowing. 2019-07-17 14:13:44 +01:00
Paul Liétar
a5379b24d5 Add remove_cache_friendly_offset calls in a few places that were missing it. 2019-07-17 13:14:59 +01:00
David Chisnall
ab8ec72738 Merge pull request #71 from microsoft/tls-2 
Improved ThreadAlloc::get API
 2019-07-16 11:25:27 +01:00
David Chisnall
d3f5dcefe4 Fix the libc hook. 
Friend declarations to `extern "C"` functions must have a forward
declaration with the correct signature.
 2019-07-16 10:55:29 +01:00
Matthew Parkinson
a2a47d9a50 Clang-tidy 2019-07-15 20:08:16 +01:00
Matthew Parkinson
1b0923e141 Clang-tidy 2019-07-15 19:51:11 +01:00
Matthew Parkinson
280c2ae25c Refactor ThreadAlloc 
Made common code between the Libc and C++ based releasing of allocators
part of a parent class, which each implementation subclasses.
 2019-07-15 17:49:40 +01:00
David Chisnall
89a296aaaa Merge pull request #70 from microsoft/pagemap-splice 
Add two APIs that are missing from the flat pagemap.
 2019-07-15 15:11:09 +01:00
Matthew Parkinson
df1896d55f Improved ThreadAlloc::get API 
Made the API so that get always returns an initialised Alloc*.  Added
new fast path that doesn't perform checking, but can lead to very slow
behaviour if called and reused.
 2019-07-15 15:02:47 +01:00
David Chisnall
5e9727c8ca [NFC] clang format. 2019-07-15 15:01:45 +01:00
David Chisnall
31267f9d85 Add two APIs that are missing from the flat pagemap. 2019-07-15 13:39:03 +01:00
Matthew Parkinson
4ce371f936 Tidy TLS implementation. 2019-07-12 16:45:04 +01:00
Matthew Parkinson
c1c9237b8d Handle 32bit to not allocate way to mcuch. 2019-07-10 20:11:06 +01:00
Matthew Parkinson
c2785ec661 Reduce test size. 2019-07-10 20:11:05 +01:00
Matthew Parkinson
33ff935aee Remove infinite loop from adding message queue check 
Adding a handle_message_queue here lead to an infinite loop.
 2019-07-10 20:11:05 +01:00
Matthew Parkinson
45f47499c5 Improved pal_supports 2019-07-10 20:11:05 +01:00
Matthew Parkinson
23b3e35d6e Add comment about inlining choices. 2019-07-10 20:11:04 +01:00
Matthew Parkinson
c6178322b0 Minor 2019-07-10 20:11:04 +01:00
Matthew Parkinson
9fd238d5fa Move remote dealloc to slow path 
It is only ever called in a tail position, so slow path means it is just
a jump, but improves the local deallocation fast path's codegen
considerably.
 2019-07-10 20:11:04 +01:00
Matthew Parkinson
e240dd279a Use FlatPageMap on OS with lazy commit 
If the operating system will allocate private pages on demand for the
pagemap then use the FlatPageMap by default as it generates better code
for deallocation.
 2019-07-10 20:11:03 +01:00
David Chisnall
d83828c537 [NFC] Appease clang-tidy. 2019-07-10 11:22:24 +01:00