Matthias Krüger c348beacea Rollup merge of #97140 - joboet:solid_parker, r=m-ou-se ... std: use an event-flag-based thread parker on SOLID `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, which, after #96393, are SOLID, SGX and Hermit (more PRs coming soon). SOLID, conforming to the [μITRON specification](http://www.ertl.jp/ITRON/SPEC/FILE/mitron-400e.pdf), has event flags, which are a thread parking primitive very similar to `Parker`. However, they do not make any atomic ordering guarantees (even though those can probably be assumed) and necessitate a system call even when the thread token is already available. Hence, this `Parker`, like the Windows parker, uses an extra atomic state variable. I future-proofed the code by wrapping the event flag in a `WaitFlag` structure, as both SGX and Hermit can share the Parker implementation, they just have slightly different primitives (SGX uses signals and Hermit has a thread blocking API). `````@kawadakk````` I assume you are the target maintainer? Could you test this for me?		2022-06-26 19:46:59 +02:00
..
time	Add SOLID targets	2021-09-28 11:31:47 +09:00
abi.rs	std: use an event flag based thread parker on SOLID	2022-05-18 12:18:51 +02:00
condvar.rs	Use Drop instead of destroy() for locks.	2022-06-03 16:45:47 +02:00
error.rs	Add SOLID targets	2021-09-28 11:31:47 +09:00
mutex.rs	Make all {Mutex, Condvar, RwLock}::new #[inline].	2022-06-06 13:49:23 +02:00
spin.rs	Use Rust 2021 prelude in std itself.	2022-05-09 11:12:32 +02:00
task.rs	Add SOLID targets	2021-09-28 11:31:47 +09:00
thread.rs	Use Rust 2021 prelude in std itself.	2022-05-09 11:12:32 +02:00
time.rs	Use Rust 2021 prelude in std itself.	2022-05-09 11:12:32 +02:00
wait_flag.rs	std: fix deadlock in Parker	2022-05-19 14:37:29 +02:00