Re: [boost] [boost.async] Seeking Endorsement

25 Jul 2023

      Do you mean asio::spawn with async? "co_await asio::spawn(co_await
async::this_coro::executor, my_stackful_coro, async::use_op)" would do. It
can handle any async operation, of which asio::spawn is one.

There is no integration between boost.context and async (and there can't
be, I think). I wonder if there could be a faux-routine,
that looks like a async-coro, but is actually a boost.context primitive
underneath.

Boost.async integrates with everything asio, through the use_op completion
token, so you can just use it with boost.process (v2 would be recommended)
like this:

That could look akin to this:

promise<void> pipe_reader(asio::readable_pipe & pr)
{
   std::string buffer;
   buffer.resize(4096);
   std::size_t n = co_await pr.async_read_some(asio::buffer(buffer),
async::use_op);
   // do something with the data
   pr.close();
}

namespace vs = boost::process::v2;
asio::readable_pipe rp{co_await async::this_coro::executor};
v2::process proc(co_await async::this_coro::executor, "/usr/bin/cat",
{"source.txt"}, bind_stdio{.stdout=rp});
co_await async::join(pipe_reader(rp), proc.async_wait(async::use_op));

On Tue, Jul 25, 2023 at 12:22 PM oliver.kowalke--- via Boost <
boost@lists.boost.org> wrote:
...
Because my code relies heavily on asio's spawn() could you provide
examples using spawn() in the git repo?
How does boost.async integrate boost.process? I'm especially interested in
adync. reading/writing from/to forked process' stdin/stout/stderr.
Oliver
24.07.2023 18:59:47 Niall Douglas via Boost :
...
On 24/07/2023 15:51, Phil Endecott via Boost wrote:
...
Klemens Morgenstern wrote:
...
I am seeking endorsement for my C++20 async coroutine library
boost.async.
...
- coroutine types (eager, lazy, generators)
Can the generators be used without ASIO? Are they compatible
the the C++23 std::generator?
His library works without effort with all third party awaitables. This
is a very big thing, previously using C++ coroutines with ASIO meant you
had to use ASIO's awaitables and couldn't use any others. With this
library, you can mix and match any type of awaitable freely with ASIO
code. That's an enormous leap forward in C++ coroutine usability.
I'll be review managing it we currently think between the 8th and 18th
of August.
Niall
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