rust/library/std/src/sys/sgx/mod.rs, branch 1.71.0https://github.com/rust-lang/rust
http://git.dreamy.place/mirrors/rust/atom?h=1.71.02022-12-29T16:45:07+00:00std: unify id-based thread parking implementations2022-12-29T16:45:07+00:00joboetjonasboettiger@icloud.com2022-12-19T14:59:00+00:00urn:sha1:a9e5c1a309df80434ebc4c1f6bfaa5cb119b465dRollup merge of #98391 - joboet:sgx_parker, r=m-ou-se2022-12-10T08:24:40+00:00Matthias Krügermatthias.krueger@famsik.de2022-12-10T08:24:40+00:00urn:sha1:ae8794ce6a7180aa81c718172321ac704e94f342
Reimplement std's thread parker on top of events on SGX
Mutex and Condvar are being replaced by more efficient implementations, which need thread parking themselves (see #93740). Therefore, the generic `Parker` needs to be replaced on all platforms where the new lock implementation will be used.
SGX enclaves have a per-thread event state, which allows waiting for and setting specific bits. This is already used by the current mutex implementation. The thread parker can however be much more efficient, as it only needs to store the `TCS` address of one thread. This address is stored in a state variable, which can also be set to indicate the thread was already notified.
`park_timeout` does not guard against spurious wakeups like the current condition variable does. This is allowed by the API of `Parker`, and I think it is better to let users handle these wakeups themselves as the guarding is quite expensive and might not be necessary.
`@jethrogb` as you wrote the initial SGX support for `std`, I assume you are the target maintainer? Could you help me test this, please? Lacking a x86_64 chip, I can't run SGX.
dont attempt strict provenance in SGX2022-11-21T15:10:56+00:00Ralf Jungpost@ralfj.de2022-11-21T15:10:56+00:00urn:sha1:1a6966602a06bb85d1952027e990d72f6d01792fSupport `#[unix_sigpipe = "inherit|sig_dfl|sig_ign"]` on `fn main()`2022-08-28T17:46:45+00:00Martin Nordholtsenselic@gmail.com2022-07-05T17:56:22+00:00urn:sha1:ddee45e1d7fd34563c13513d974f792fae41a2f7
This makes it possible to instruct libstd to never touch the signal
handler for `SIGPIPE`, which makes programs pipeable by default (e.g.
with `./your-program | head -n 1`) without `ErrorKind::BrokenPipe`
errors.
std: rewrite SGX thread parker2022-06-22T14:42:49+00:00joboetjonasboettiger@icloud.com2022-06-22T14:42:49+00:00urn:sha1:9678cece6de806693fc585225c0d6a4a5adaacd3library: Remove definitions and reexports of `strlen` from libstd2022-04-14T18:57:01+00:00Vadim Petrochenkovvadim.petrochenkov@gmail.com2022-04-14T11:38:39+00:00urn:sha1:6eaec56ef79c605e90664eb25f66c75ae8bd60c9Move std::sys::{mutex, condvar, rwlock} to std::sys::locks.2022-03-22T17:19:47+00:00Mara Bosm-ou.se@m-ou.se2022-03-21T14:45:51+00:00urn:sha1:733153f2e550d46fe6f794c969df91368580e0b8Hide Repr details from io::Error, and rework `io::Error::new_const`.2022-02-05T02:47:29+00:00Thom Chiovolonichiovolonit@gmail.com2021-08-08T08:04:33+00:00urn:sha1:554918e311a1221744aa9b6d60e2f00f5b3155e5Move `os_str_bytes` to `sys::unix` and reuse it on other platforms.2021-07-03T01:01:36+00:00Christiaan Dirkxchristiaan@dirkx.email2021-06-21T09:44:59+00:00urn:sha1:c93cb40b90b5f862bf448136cbe608f43ae0f62fRename ErrorKind::Unknown to Uncategorized.2021-06-15T12:30:13+00:00Mara Bosm-ou.se@m-ou.se2021-06-15T12:27:31+00:00urn:sha1:a0d11a4fab9c00e7df40a248de5d1532c56d5ef6