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Merged
merged 1 commit into from
Dec 21, 2024
Merged

Abstract ProcThreadAttributeList into its own struct #123604

merged 1 commit into from
Dec 21, 2024

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michaelvanstraten
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@michaelvanstraten michaelvanstraten commented Apr 7, 2024 •
edited by ChrisDenton
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As extensively discussed in issue #114854, the current implementation of the unstable windows_process_extensions_raw_attribute features lacks support for passing a raw pointer.

This PR wants to explore the opportunity to abstract away the ProcThreadAttributeList into its own struct to for one improve safety and usability and secondly make it possible to maybe also use it to spawn new threads.

try-job: x86_64-mingw

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r? @ChrisDenton

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@rustbot rustbot added O-windows Operating system: Windows S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. T-libs Relevant to the library team, which will review and decide on the PR/issue. labels Apr 7, 2024
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@michaelvanstraten michaelvanstraten force-pushed the proc_thread_attribute_list branch from 4134d3e to 3e6c21a Compare April 7, 2024 19:24
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@cre4ture cre4ture mentioned this pull request Apr 19, 2024
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@michaelvanstraten michaelvanstraten marked this pull request as ready for review May 4, 2024 11:50
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r? @Dylan-DPC

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Assigning it back to Chris giving them more time to review it :) (and well i am not the right person to review it :P)

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The public struct should be defined and documented in std/src/os. Internally it can just be a simple wrapper around the std/src/sys types but nothing in sys should be directly exposed to users.

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michaelvanstraten commented May 19, 2024
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bors commented May 19, 2024

☔ The latest upstream changes (presumably #125280) made this pull request unmergeable. Please resolve the merge conflicts.

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michaelvanstraten commented May 22, 2024 •
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@rustbot label +S-waiting-on-author -S-waiting-on-review

@rustbot rustbot added S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels May 22, 2024
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The public struct should be defined and documented in std/src/os. Internally it can just be a simple wrapper around the std/src/sys types but nothing in sys should be directly exposed to users.

Would https://github.com/rust-lang/rust/blob/master/library/std/src/os/windows/process.rs, even be the right location for it considering it can be used to create a thread? Maybe std/src/os/windows/attribute_list.rs would be appropriate?

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What I don't understand is that there exists a CreateRemoteThreadEx but no CreateThreadEx, or at least I could not find one. The remote-thread function is probably uninteresting to the standard library, while things such as setting the processor group affinity are.

Is it possible to create a thread for the current process with CreateRemoteThreadEx?

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Is it possible to create a thread for the current process with CreateRemoteThreadEx?

Yes. Indeed, the OS doesn't expose a special function to create a thread in the current process. NtCreateThread() always requires a process handle to be supplied, which closely resembles the Win32 API's CreateRemoteThread[Ex]() function. The Win32 API's CreateThread() function is a convenience that passes the (pseudo-)handle returned by GetCurrentProcess() to the Native API to create a "remote" thread in the process of the calling thread.

@rustbot rustbot removed the S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. label Nov 21, 2024
@michaelvanstraten michaelvanstraten force-pushed the proc_thread_attribute_list branch from 0f24485 to 09c9f94 Compare November 29, 2024 08:08
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@michaelvanstraten michaelvanstraten force-pushed the proc_thread_attribute_list branch from 09c9f94 to f371952 Compare November 30, 2024 09:18
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@Dylan-DPC do you know somebody who could review this?

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r? @joboet

@rustbot rustbot assigned joboet and unassigned ChrisDenton Dec 16, 2024
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r? @ChrisDenton

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@bors r+

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bors commented Dec 20, 2024

📌 Commit f371952 has been approved by ChrisDenton

It is now in the queue for this repository.

@bors bors added S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Dec 20, 2024
@matthiaskrgr matthiaskrgr mentioned this pull request Dec 21, 2024
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@bors bors merged commit 758ad53 into rust-lang:master Dec 21, 2024
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@rustbot rustbot added this to the 1.85.0 milestone Dec 21, 2024
@PaulDance PaulDance mentioned this pull request Apr 9, 2025
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