Comments (5)
lewissbaker
commented on August 20, 2024
Note that there are some experimental implementations of the task, async_generator and recursive_generator that use the symmetric transfer facility in the https://github.com/lewissbaker/cppcoro/tree/tailcall branch
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lewissbaker
commented on August 20, 2024
PR #91 has merged support for symmetric-transfer on compilers that support it.
It's currently conditionally compiled in with #if CPPCORO_COMPILER_SUPPORTS_SYMMETRIC_TRANSFER which is currently only defined for Clang.
Once we have a version of MSVC that supports this we can switch to this implementation for MSVC too.
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chausner
commented on August 20, 2024
It's unclear to me whether the latest MSVC versions support this by now or not. I have not tried yet with cppcoro but wrote my own promise and task classes. With MSVC 16.5, I am able to return std::coroutine_handle from await_suspend but I am still running into stack overflows when repeated co_awaits finish synchronously. I guess the feature may only be partially supported right now (tail calls are not guaranteed yet)?
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GorNishanov
commented on August 20, 2024
Yes. The front-end part was implemented, but, back end is not (hence the stack overflow).
It is scheduled to be done soon-ish
…________________________________
From: chausner <[email protected]>
Sent: Monday, March 23, 2020 1:42 PM
To: lewissbaker/cppcoro <[email protected]>
Cc: Gor Nishanov <[email protected]>; Mention <[email protected]>
Subject: Re: [lewissbaker/cppcoro] Remove use of std::atomic in task and async_generator once symmetric transfer is available (#55)
It's unclear to me whether the latest MSVC versions support this by now or not. I have not tried yet with cppcoro but wrote my own promise and task classes. With MSVC 16.5, I am able to return std::coroutine_handle from await_suspend but I am still running into stack overflows when repeated co_awaits finish synchronously. I guess the feature may only be partially supported right now (tail calls are not guaranteed yet)?
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chausner
commented on August 20, 2024
Yes. The front-end part was implemented, but, back end is not (hence the stack overflow). It is scheduled to be done soon-ish
Thanks for the clarification. Looking forward to seeing it fully supported.
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Related Issues (20)
- Question: task lifecycle and final_suspend
- net/ipv4_address.hpp bug
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- Bug Report: the port of socket is incorrect when I use socket.bind(...) HOT 1
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