bjoernager/rust
bjoernager/rust
1
Fork 0
Code Activity
rust/compiler/rustc_data_structures/src
History
Guillaume Yziquel 3fc5ed8067 Issue 122262: MAP_PRIVATE for more reliability on virtualised filesystems. 
Adding support of quirky filesystems occuring in virtualised settings not
having full POSIX support for memory mapped files. Example: current virtiofs
with cache disabled, occuring in Incus/LXD or Kata Containers. Has been
hitting various virtualised filesystems since 2016, depending on their levels
of maturity at the time. The situation will perhaps improve when virtiofs DAX
support patches will have made it into the qemu mainline.

On a reliability level, using the MAP_PRIVATE sycall flag instead of the
MAP_SHARED syscall flag for the mmap() system call does have some undefined
behaviour when the caller update the memory mapping of the mmap()ed file, but
MAP_SHARED does allow not only the calling process but other processes to
modify the memory mapping. Thus, in the current context, using MAP_PRIVATE
copy-on-write is marginally more reliable than MAP_SHARED.

This discussion of reliability is orthogonal to the type system enforced safety
policy of rust, which does not claim to handle memory modification of memory
mapped files triggered through the operating system and not the running rust
process.
2024-03-15 18:31:07 -04:00
..
base_n Adapt rustc_data_structures tests to run in strict miri 2022-06-04 17:46:29 +02:00
binary_search_util Remove invariant comments 2023-11-05 17:35:37 -06:00
fingerprint remove redundant imports 2023-12-10 10:56:22 +08:00
flock windows bump to 0.52 2024-02-18 16:02:16 +03:00
graph Inline dominator check. 2023-12-31 00:37:45 +00:00
intern remove redundant imports 2023-12-10 10:56:22 +08:00
obligation_forest remove redundant imports 2023-12-10 10:56:22 +08:00
owned_slice Don't leak the function that is called on drop 2023-05-23 14:53:36 +00:00
profiling Don't use serde_json to serialize a simple JSON object 2023-04-16 15:00:06 +02:00
sip128 remove redundant imports 2023-12-10 10:56:22 +08:00
small_c_str Fix SmallCStr conversion from CStr 2024-02-14 18:40:53 -08:00
snapshot_map Call the method fork instead of clone and add proper comments 2022-02-14 12:57:20 -03:00
sorted_map Split {Idx, IndexVec, IndexSlice} into their own modules 2023-04-24 13:53:35 +00:00
sso rustc_data_structures: use either instead of itertools 2024-01-24 15:36:57 -08:00
stable_hasher Store hashes in special types so they aren't accidentally encoded as numbers 2023-04-18 10:52:47 -04:00
sync Rollup merge of #120976 - matthiaskrgr:constify_TL_statics, r=lcnr 2024-03-04 22:16:30 +01:00
tagged_ptr Replace NonZero::<_>::new with NonZero::new. 2024-02-15 08:09:42 +01:00
tiny_list rustc_data_structures: remove ref patterns and other artifacts of the past 2023-01-17 07:48:19 +00:00
transitive_relation get rid of RefCell in TransitiveRelation 2022-08-22 18:08:46 +08:00
aligned.rs fix broken intradoclinks 2023-04-14 13:04:58 +00:00
atomic_ref.rs
base_n.rs [rustc_data_structures][base_n][perf] Remove unnecessary utf8 check. 2023-08-01 11:10:17 -07:00
captures.rs Remove #[allow(unused_lifetimes)] which is now unnecessary 2021-06-17 08:56:54 +09:00
fingerprint.rs Use the full Fingerprint when stringifying Svh 2023-04-30 14:28:30 -04:00
flat_map_in_place.rs Rename MapInPlace as FlatMapInPlace. 2023-03-08 15:53:56 +11:00
flock.rs Initiate the inner usage of cfg_match 2023-10-19 20:18:51 -03:00
frozen.rs Remove double spaces after dots in comments 2023-01-17 08:09:33 +00:00
fx.rs rustc_mir_transform: Make DestinationPropagation stable for queries 2024-01-05 20:55:32 +01:00
hashes.rs Use UnhashMap for a few more maps 2024-01-17 17:09:55 -05:00
intern.rs Don't print Interned or PrivateZst 2023-06-09 00:20:37 +00:00
jobserver.rs Update jobserver-rs to 0.1.28 2024-02-09 19:13:07 +03:00
lib.rs Use generic NonZero internally. 2024-02-15 08:09:42 +01:00
macros.rs Introduce ChunkedBitSet and use it for some dataflow analyses. 2022-02-23 10:18:49 +11:00
marker.rs Remove OneThread 2024-01-18 03:30:05 +01:00
memmap.rs Issue 122262: MAP_PRIVATE for more reliability on virtualised filesystems. 2024-03-15 18:31:07 -04:00
owned_slice.rs By tracking import use types to check whether it is scope uses or the other situations like module-relative uses, we can do more accurate redundant import checking. 2024-02-18 16:38:11 +08:00
packed.rs Add Pu128 = #[repr(packed(8))] u128 2024-01-19 20:10:38 -08:00
profiling.rs windows bump to 0.52 2024-02-18 16:02:16 +03:00
sharded.rs rustc_data_structures: use either instead of itertools 2024-01-24 15:36:57 -08:00
sip128.rs deny(unsafe_op_in_unsafe_fn) in rustc_data_structures 2023-04-19 18:00:48 +00:00
small_c_str.rs Fix SmallCStr conversion from CStr 2024-02-14 18:40:53 -08:00
sorted_map.rs Avoid specialization for the Span Encodable and Decodable impls 2023-12-31 20:42:17 +00:00
stable_hasher.rs Use generic NonZero internally. 2024-02-15 08:09:42 +01:00
stack.rs Fix some clippy::complexity 2023-04-09 23:22:14 +02:00
steal.rs Harden the pre-tyctxt query system against accidental recomputation 2023-01-12 09:26:28 +00:00
svh.rs Avoid specialization for the Span Encodable and Decodable impls 2023-12-31 20:42:17 +00:00
sync.rs compiler: use addr_of! 2024-02-24 18:53:48 +03:00
tagged_ptr.rs Simplify bits_for_tags impl 2023-04-20 19:54:10 +00:00
temp_dir.rs Update dependencies with reported vulnerabilities 2023-06-02 12:34:01 -05:00
tiny_list.rs rustc_data_structures: remove ref patterns and other artifacts of the past 2023-01-17 07:48:19 +00:00
transitive_relation.rs Remove double spaces after dots in comments 2023-01-17 08:09:33 +00:00
unhash.rs
unord.rs clean up potential_query_instability with FxIndexMap and UnordMap 2024-02-14 18:36:37 +08:00
vec_linked_list.rs Split {Idx, IndexVec, IndexSlice} into their own modules 2023-04-24 13:53:35 +00:00
work_queue.rs Split {Idx, IndexVec, IndexSlice} into their own modules 2023-04-24 13:53:35 +00:00